Vitaliy Filippov
4a2dcf7b6b
VNPL 1.1 is slightly reworded to make it clear that proprietary software interacting with Vitastor and providing some kind of service to end users isn't a "Proxy Program" if it's not specially designed to be used with Vitastor. For example, Windows OS running in a virtual machine stored in a Vitastor cluster clearly isn't.
1276 lines
46 KiB
JavaScript
1276 lines
46 KiB
JavaScript
// Copyright (c) Vitaliy Filippov, 2019+
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// License: VNPL-1.1 (see README.md for details)
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const http = require('http');
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const crypto = require('crypto');
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const os = require('os');
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const WebSocket = require('ws');
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const LPOptimizer = require('./lp-optimizer.js');
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const stableStringify = require('./stable-stringify.js');
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const PGUtil = require('./PGUtil.js');
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// FIXME document all etcd keys and config variables in the form of JSON schema or similar
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const etcd_allow = new RegExp('^'+[
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'config/global',
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'config/node_placement',
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'config/pools',
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'config/osd/[1-9]\\d*',
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'config/pgs',
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'osd/state/[1-9]\\d*',
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'osd/stats/[1-9]\\d*',
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'mon/master',
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'pg/state/[1-9]\\d*/[1-9]\\d*',
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'pg/stats/[1-9]\\d*/[1-9]\\d*',
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'pg/history/[1-9]\\d*/[1-9]\\d*',
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'stats',
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].join('$|^')+'$');
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const etcd_tree = {
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config: {
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/* global: {
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// mon
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etcd_mon_ttl: 30, // min: 10
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etcd_mon_timeout: 1000, // ms. min: 0
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etcd_mon_retries: 5, // min: 0
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mon_change_timeout: 1000, // ms. min: 100
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mon_stats_timeout: 1000, // ms. min: 100
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osd_out_time: 1800, // seconds. min: 0
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placement_levels: { datacenter: 1, rack: 2, host: 3, osd: 4, ... },
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// client and osd
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use_sync_send_recv: false,
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log_level: 0,
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block_size: 131072,
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disk_alignment: 4096,
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bitmap_granularity: 4096,
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immediate_commit: false, // 'all' or 'small'
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client_dirty_limit: 33554432,
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peer_connect_interval: 5, // seconds. min: 1
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peer_connect_timeout: 5, // seconds. min: 1
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up_wait_retry_interval: 500, // ms. min: 50
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// osd
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etcd_report_interval: 30, // min: 10
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run_primary: true,
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bind_address: "0.0.0.0",
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bind_port: 0,
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autosync_interval: 5,
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client_queue_depth: 128, // unused
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recovery_queue_depth: 4,
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readonly: false,
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print_stats_interval: 3,
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// blockstore - fixed in superblock
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block_size,
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disk_alignment,
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journal_block_size,
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meta_block_size,
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bitmap_granularity,
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journal_device,
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journal_offset,
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journal_size,
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disable_journal_fsync,
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data_device,
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data_offset,
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data_size,
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disable_data_fsync,
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meta_device,
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meta_offset,
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disable_meta_fsync,
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disable_device_lock,
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// blockstore - configurable
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flusher_count,
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inmemory_metadata,
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inmemory_journal,
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journal_sector_buffer_count,
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journal_no_same_sector_overwrites,
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}, */
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global: {},
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/* node_placement: {
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host1: { level: 'host', parent: 'rack1' },
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...
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}, */
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node_placement: {},
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/* pools: {
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<id>: {
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name: 'testpool',
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// jerasure uses Reed-Solomon-Vandermonde codes
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scheme: 'replicated' | 'xor' | 'jerasure',
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pg_size: 3,
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pg_minsize: 2,
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// number of parity chunks, required for jerasure
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parity_chunks?: 1,
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pg_count: 100,
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failure_domain: 'host',
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max_osd_combinations: 10000,
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pg_stripe_size: 4194304,
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root_node?: 'rack1',
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// restrict pool to OSDs having all of these tags
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osd_tags?: 'nvme' | [ 'nvme', ... ],
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},
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...
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}, */
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pools: {},
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osd: {
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/* <id>: { reweight?: 1, tags?: [ 'nvme', ... ] }, ... */
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},
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/* pgs: {
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hash: string,
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items: {
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<pool_id>: {
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<pg_id>: {
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osd_set: [ 1, 2, 3 ],
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primary: 1,
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pause: false,
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}
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}
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}
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}, */
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pgs: {},
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},
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osd: {
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state: {
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/* <osd_num_t>: {
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state: "up",
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addresses: string[],
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host: string,
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port: uint16_t,
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primary_enabled: boolean,
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blockstore_enabled: boolean,
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}, */
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},
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stats: {
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/* <osd_num_t>: {
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time: number, // unix time
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blockstore_ready: boolean,
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size: uint64_t, // bytes
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free: uint64_t, // bytes
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host: string,
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op_stats: {
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<string>: { count: uint64_t, usec: uint64_t, bytes: uint64_t },
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},
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subop_stats: {
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<string>: { count: uint64_t, usec: uint64_t },
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},
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recovery_stats: {
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degraded: { count: uint64_t, bytes: uint64_t },
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misplaced: { count: uint64_t, bytes: uint64_t },
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},
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}, */
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},
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},
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mon: {
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master: {
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/* ip: [ string ], */
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},
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},
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pg: {
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state: {
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/* <pool_id>: {
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<pg_id>: {
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primary: osd_num_t,
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state: ("starting"|"peering"|"incomplete"|"active"|"stopping"|"offline"|
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"degraded"|"has_incomplete"|"has_degraded"|"has_misplaced"|"has_unclean"|
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"has_invalid"|"left_on_dead")[],
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}
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}, */
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},
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stats: {
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/* <pool_id>: {
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<pg_id>: {
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object_count: uint64_t,
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clean_count: uint64_t,
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misplaced_count: uint64_t,
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degraded_count: uint64_t,
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incomplete_count: uint64_t,
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write_osd_set: osd_num_t[],
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},
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}, */
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},
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history: {
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/* <pool_id>: {
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<pg_id>: {
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osd_sets: osd_num_t[][],
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all_peers: osd_num_t[],
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epoch: uint32_t,
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},
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}, */
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},
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},
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stats: {
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/* op_stats: {
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<string>: { count: uint64_t, usec: uint64_t, bytes: uint64_t },
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},
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subop_stats: {
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<string>: { count: uint64_t, usec: uint64_t },
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},
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recovery_stats: {
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degraded: { count: uint64_t, bytes: uint64_t },
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misplaced: { count: uint64_t, bytes: uint64_t },
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},
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object_counts: {
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object: uint64_t,
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clean: uint64_t,
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misplaced: uint64_t,
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degraded: uint64_t,
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incomplete: uint64_t,
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}, */
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},
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};
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// FIXME Split into several files
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class Mon
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{
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constructor(config)
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{
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// FIXME: Maybe prefer local etcd
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this.etcd_urls = [];
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for (let url of config.etcd_url.split(/,/))
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{
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let scheme = 'http';
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url = url.trim().replace(/^(https?):\/\//, (m, m1) => { scheme = m1; return ''; });
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if (!/\/[^\/]/.exec(url))
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url += '/v3';
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this.etcd_urls.push(scheme+'://'+url);
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}
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this.verbose = config.verbose || 0;
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this.config = {};
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this.etcd_prefix = config.etcd_prefix || '/vitastor';
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this.etcd_prefix = this.etcd_prefix.replace(/\/\/+/g, '/').replace(/^\/?(.*[^\/])\/?$/, '/$1');
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this.etcd_start_timeout = (config.etcd_start_timeout || 5) * 1000;
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this.state = JSON.parse(JSON.stringify(this.constructor.etcd_tree));
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}
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async start()
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{
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await this.load_config();
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await this.get_lease();
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await this.become_master();
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await this.load_cluster_state();
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await this.start_watcher(this.config.etcd_mon_retries);
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await this.recheck_pgs();
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}
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async load_config()
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{
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const res = await this.etcd_call('/kv/txn', { success: [
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{ requestRange: { key: b64(this.etcd_prefix+'/config/global') } }
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] }, this.etcd_start_timeout, -1);
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if (res.responses[0].response_range.kvs)
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{
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this.parse_kv(res.responses[0].response_range.kvs[0]);
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}
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this.check_config();
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}
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check_config()
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{
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this.config.etcd_mon_ttl = Number(this.config.etcd_mon_ttl) || 30;
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if (this.config.etcd_mon_ttl < 10)
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{
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this.config.etcd_mon_ttl = 10;
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}
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this.config.etcd_mon_timeout = Number(this.config.etcd_mon_timeout) || 0;
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if (this.config.etcd_mon_timeout <= 0)
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{
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this.config.etcd_mon_timeout = 1000;
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}
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this.config.etcd_mon_retries = Number(this.config.etcd_mon_retries) || 5;
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if (this.config.etcd_mon_retries < 0)
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{
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this.config.etcd_mon_retries = 0;
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}
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this.config.mon_change_timeout = Number(this.config.mon_change_timeout) || 1000;
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if (this.config.mon_change_timeout < 100)
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{
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this.config.mon_change_timeout = 100;
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}
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this.config.mon_stats_timeout = Number(this.config.mon_stats_timeout) || 1000;
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if (this.config.mon_stats_timeout < 100)
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{
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this.config.mon_stats_timeout = 100;
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}
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// After this number of seconds, a dead OSD will be removed from PG distribution
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this.config.osd_out_time = Number(this.config.osd_out_time) || 0;
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if (!this.config.osd_out_time)
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{
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this.config.osd_out_time = 30*60; // 30 minutes by default
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}
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}
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async start_watcher(retries)
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{
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let retry = 0;
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if (!retries || retries < 1)
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{
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retries = 1;
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}
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while (retries < 0 || retry < retries)
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{
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const base = 'ws'+this.etcd_urls[Math.floor(Math.random()*this.etcd_urls.length)].substr(4);
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const ok = await new Promise((ok, no) =>
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{
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const timer_id = setTimeout(() =>
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{
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this.ws.close();
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ok(false);
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}, this.config.etcd_mon_timeout);
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this.ws = new WebSocket(base+'/watch');
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this.ws.on('open', () =>
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{
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if (timer_id)
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clearTimeout(timer_id);
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ok(true);
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});
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});
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if (ok)
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{
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break;
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}
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this.ws = null;
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retry++;
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}
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if (!this.ws)
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{
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this.die('Failed to open etcd watch websocket');
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}
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this.ws.send(JSON.stringify({
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create_request: {
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key: b64(this.etcd_prefix+'/'),
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range_end: b64(this.etcd_prefix+'0'),
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start_revision: ''+this.etcd_watch_revision,
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watch_id: 1,
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progress_notify: true,
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},
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}));
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this.ws.on('message', (msg) =>
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{
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let data;
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try
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{
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data = JSON.parse(msg);
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}
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catch (e)
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{
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}
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if (!data || !data.result || !data.result.events)
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{
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if (!data || !data.result || !data.result.watch_id)
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{
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console.error('Garbage received from watch websocket: '+msg);
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}
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}
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else
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{
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let stats_changed = false, changed = false;
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if (this.verbose)
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{
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console.log('Revision '+data.result.header.revision+' events: ');
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}
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this.etcd_watch_revision = BigInt(data.result.header.revision)+BigInt(1);
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for (const e of data.result.events)
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{
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this.parse_kv(e.kv);
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const key = e.kv.key.substr(this.etcd_prefix.length);
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if (key.substr(0, 11) == '/osd/stats/' || key.substr(0, 10) == '/pg/stats/')
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{
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stats_changed = true;
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}
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else if (key != '/stats')
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{
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changed = true;
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}
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if (this.verbose)
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{
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console.log(e);
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}
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}
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if (stats_changed)
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{
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this.schedule_update_stats();
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}
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if (changed)
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{
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this.schedule_recheck();
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}
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}
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});
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}
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async get_lease()
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{
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const max_ttl = this.config.etcd_mon_ttl + this.config.etcd_mon_timeout/1000*this.config.etcd_mon_retries;
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const res = await this.etcd_call('/lease/grant', { TTL: max_ttl }, this.config.etcd_mon_timeout, this.config.etcd_mon_retries);
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this.etcd_lease_id = res.ID;
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setInterval(async () =>
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{
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const res = await this.etcd_call('/lease/keepalive', { ID: this.etcd_lease_id }, this.config.etcd_mon_timeout, this.config.etcd_mon_retries);
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if (!res.result.TTL)
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{
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this.die('Lease expired');
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}
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}, this.config.etcd_mon_timeout);
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}
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async become_master()
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{
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const state = { ip: this.local_ips() };
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while (1)
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{
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const res = await this.etcd_call('/kv/txn', {
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compare: [ { target: 'CREATE', create_revision: 0, key: b64(this.etcd_prefix+'/mon/master') } ],
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success: [ { requestPut: { key: b64(this.etcd_prefix+'/mon/master'), value: b64(JSON.stringify(state)), lease: ''+this.etcd_lease_id } } ],
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}, this.etcd_start_timeout, 0);
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if (res.succeeded)
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{
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break;
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}
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console.log('Waiting to become master');
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await new Promise(ok => setTimeout(ok, this.etcd_start_timeout));
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}
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console.log('Became master');
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}
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async load_cluster_state()
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{
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const res = await this.etcd_call('/kv/txn', { success: [
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{ requestRange: { key: b64(this.etcd_prefix+'/'), range_end: b64(this.etcd_prefix+'0') } },
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] }, this.etcd_start_timeout, -1);
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this.etcd_watch_revision = BigInt(res.header.revision)+BigInt(1);
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this.state = JSON.parse(JSON.stringify(this.constructor.etcd_tree));
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for (const response of res.responses)
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{
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for (const kv of response.response_range.kvs)
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{
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this.parse_kv(kv);
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}
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}
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}
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all_osds()
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{
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return Object.keys(this.state.osd.stats);
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}
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get_osd_tree()
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{
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const levels = this.config.placement_levels||{};
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levels.host = levels.host || 100;
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levels.osd = levels.osd || 101;
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const tree = { '': { children: [] } };
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let up_osds = {};
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for (const node_id in this.state.config.node_placement||{})
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{
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const node_cfg = this.state.config.node_placement[node_id];
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if (!node_id || /^\d/.exec(node_id) ||
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!node_cfg.level || !levels[node_cfg.level])
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{
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// All nodes must have non-empty non-numeric IDs and valid levels
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continue;
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}
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tree[node_id] = { id: node_id, level: node_cfg.level, parent: node_cfg.parent, children: [] };
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}
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// This requires monitor system time to be in sync with OSD system times (at least to some extent)
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const down_time = Date.now()/1000 - this.config.osd_out_time;
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for (const osd_num of this.all_osds().sort((a, b) => a - b))
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{
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const stat = this.state.osd.stats[osd_num];
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if (stat.size && (this.state.osd.state[osd_num] || Number(stat.time) >= down_time))
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{
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// Numeric IDs are reserved for OSDs
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const osd_cfg = this.state.config.osd[osd_num];
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let reweight = osd_cfg && Number(osd_cfg.reweight);
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if (reweight < 0 || isNaN(reweight))
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reweight = 1;
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if (this.state.osd.state[osd_num] && reweight > 0)
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{
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// React to down OSDs immediately
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up_osds[osd_num] = true;
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}
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tree[osd_num] = tree[osd_num] || {};
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tree[osd_num].id = osd_num;
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tree[osd_num].parent = tree[osd_num].parent || stat.host;
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tree[osd_num].level = 'osd';
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tree[osd_num].size = reweight * stat.size / 1024 / 1024 / 1024 / 1024; // terabytes
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if (osd_cfg && osd_cfg.tags)
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{
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tree[osd_num].tags = (osd_cfg.tags instanceof Array ? [ ...osd_cfg.tags ] : [ osd_cfg.tags ])
|
|
.reduce((a, c) => { a[c] = true; return a; }, {});
|
|
}
|
|
delete tree[osd_num].children;
|
|
if (!tree[tree[osd_num].parent])
|
|
{
|
|
tree[tree[osd_num].parent] = {
|
|
id: tree[osd_num].parent,
|
|
level: 'host',
|
|
parent: null,
|
|
children: [],
|
|
};
|
|
}
|
|
}
|
|
}
|
|
for (const node_id in tree)
|
|
{
|
|
if (node_id === '')
|
|
{
|
|
continue;
|
|
}
|
|
const node_cfg = tree[node_id];
|
|
const node_level = levels[node_cfg.level] || node_cfg.level;
|
|
let parent_level = node_cfg.parent && tree[node_cfg.parent] && tree[node_cfg.parent].children
|
|
&& tree[node_cfg.parent].level;
|
|
parent_level = parent_level ? (levels[parent_level] || parent_level) : null;
|
|
// Parent's level must be less than child's; OSDs must be leaves
|
|
const parent = parent_level && parent_level < node_level ? node_cfg.parent : '';
|
|
tree[parent].children.push(tree[node_id]);
|
|
delete node_cfg.parent;
|
|
}
|
|
return { up_osds, levels, osd_tree: tree };
|
|
}
|
|
|
|
async stop_all_pgs(pool_id)
|
|
{
|
|
let has_online = false, paused = true;
|
|
for (const pg in this.state.config.pgs.items[pool_id]||{})
|
|
{
|
|
// FIXME: Change all (||{}) to ?. (optional chaining) at some point
|
|
const cur_state = (((this.state.pg.state[pool_id]||{})[pg]||{}).state||[]).join(',');
|
|
if (cur_state != '' && cur_state != 'offline')
|
|
{
|
|
has_online = true;
|
|
}
|
|
if (!this.state.config.pgs.items[pool_id][pg].pause)
|
|
{
|
|
paused = false;
|
|
}
|
|
}
|
|
if (!paused)
|
|
{
|
|
console.log('Stopping all PGs for pool '+pool_id+' before changing PG count');
|
|
const new_cfg = JSON.parse(JSON.stringify(this.state.config.pgs));
|
|
for (const pg in new_cfg.items[pool_id])
|
|
{
|
|
new_cfg.items[pool_id][pg].pause = true;
|
|
}
|
|
// Check that no OSDs change their state before we pause PGs
|
|
// Doing this we make sure that OSDs don't wake up in the middle of our "transaction"
|
|
// and can't see the old PG configuration
|
|
const checks = [];
|
|
for (const osd_num of this.all_osds())
|
|
{
|
|
const key = b64(this.etcd_prefix+'/osd/state/'+osd_num);
|
|
checks.push({ key, target: 'MOD', result: 'LESS', mod_revision: ''+this.etcd_watch_revision });
|
|
}
|
|
const res = await this.etcd_call('/kv/txn', {
|
|
compare: [
|
|
{ key: b64(this.etcd_prefix+'/mon/master'), target: 'LEASE', lease: ''+this.etcd_lease_id },
|
|
{ key: b64(this.etcd_prefix+'/config/pgs'), target: 'MOD', mod_revision: ''+this.etcd_watch_revision, result: 'LESS' },
|
|
...checks,
|
|
],
|
|
success: [
|
|
{ requestPut: { key: b64(this.etcd_prefix+'/config/pgs'), value: b64(JSON.stringify(new_cfg)) } },
|
|
],
|
|
}, this.config.etcd_mon_timeout, 0);
|
|
return false;
|
|
}
|
|
return !has_online;
|
|
}
|
|
|
|
save_new_pgs_txn(request, pool_id, up_osds, prev_pgs, new_pgs, pg_history)
|
|
{
|
|
const replicated = new_pgs.length && this.state.config.pools[pool_id].scheme === 'replicated';
|
|
const pg_minsize = new_pgs.length && this.state.config.pools[pool_id].pg_minsize;
|
|
const pg_items = {};
|
|
new_pgs.map((osd_set, i) =>
|
|
{
|
|
osd_set = osd_set.map(osd_num => osd_num === LPOptimizer.NO_OSD ? 0 : osd_num);
|
|
let alive_set;
|
|
if (replicated)
|
|
alive_set = osd_set.filter(osd_num => osd_num && up_osds[osd_num]);
|
|
else
|
|
{
|
|
// Prefer data OSDs for EC because they can actually read something without an additional network hop
|
|
alive_set = osd_set.slice(0, pg_minsize).filter(osd_num => osd_num && up_osds[osd_num]);
|
|
if (!alive_set.length)
|
|
alive_set = osd_set.filter(osd_num => osd_num && up_osds[osd_num]);
|
|
}
|
|
pg_items[i+1] = {
|
|
osd_set,
|
|
primary: alive_set.length ? alive_set[Math.floor(Math.random()*alive_set.length)] : 0,
|
|
};
|
|
if (prev_pgs[i] && prev_pgs[i].join(' ') != osd_set.join(' '))
|
|
{
|
|
pg_history[i] = pg_history[i] || {};
|
|
pg_history[i].osd_sets = pg_history[i].osd_sets || [];
|
|
pg_history[i].osd_sets.push(prev_pgs[i]);
|
|
}
|
|
});
|
|
for (let i = 0; i < new_pgs.length || i < prev_pgs.length; i++)
|
|
{
|
|
// FIXME: etcd has max_txn_ops limit, and it's 128 by default
|
|
// Sooo we probably want to change our storage scheme for PG histories...
|
|
request.compare.push({
|
|
key: b64(this.etcd_prefix+'/pg/history/'+pool_id+'/'+(i+1)),
|
|
target: 'MOD',
|
|
mod_revision: ''+this.etcd_watch_revision,
|
|
result: 'LESS',
|
|
});
|
|
if (pg_history[i])
|
|
{
|
|
request.success.push({
|
|
requestPut: {
|
|
key: b64(this.etcd_prefix+'/pg/history/'+pool_id+'/'+(i+1)),
|
|
value: b64(JSON.stringify(pg_history[i])),
|
|
},
|
|
});
|
|
}
|
|
else
|
|
{
|
|
request.success.push({
|
|
requestDeleteRange: {
|
|
key: b64(this.etcd_prefix+'/pg/history/'+pool_id+'/'+(i+1)),
|
|
},
|
|
});
|
|
}
|
|
}
|
|
this.state.config.pgs.items = this.state.config.pgs.items || {};
|
|
if (!new_pgs.length)
|
|
{
|
|
delete this.state.config.pgs.items[pool_id];
|
|
}
|
|
else
|
|
{
|
|
this.state.config.pgs.items[pool_id] = pg_items;
|
|
}
|
|
}
|
|
|
|
validate_pool_cfg(pool_id, pool_cfg, warn)
|
|
{
|
|
pool_cfg.pg_size = Math.floor(pool_cfg.pg_size);
|
|
pool_cfg.pg_minsize = Math.floor(pool_cfg.pg_minsize);
|
|
pool_cfg.parity_chunks = Math.floor(pool_cfg.parity_chunks) || undefined;
|
|
pool_cfg.pg_count = Math.floor(pool_cfg.pg_count);
|
|
pool_cfg.failure_domain = pool_cfg.failure_domain || 'host';
|
|
pool_cfg.max_osd_combinations = Math.floor(pool_cfg.max_osd_combinations) || 10000;
|
|
if (!/^[1-9]\d*$/.exec(''+pool_id))
|
|
{
|
|
if (warn)
|
|
console.log('Pool ID '+pool_id+' is invalid');
|
|
return false;
|
|
}
|
|
if (pool_cfg.scheme !== 'xor' && pool_cfg.scheme !== 'replicated' && pool_cfg.scheme !== 'jerasure')
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid coding scheme (one of "xor", "replicated" and "jerasure" required)');
|
|
return false;
|
|
}
|
|
if (!pool_cfg.pg_size || pool_cfg.pg_size < 1 || pool_cfg.pg_size > 256 ||
|
|
(pool_cfg.scheme === 'xor' || pool_cfg.scheme == 'jerasure') && pool_cfg.pg_size < 3)
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid pg_size');
|
|
return false;
|
|
}
|
|
if (!pool_cfg.pg_minsize || pool_cfg.pg_minsize < 1 || pool_cfg.pg_minsize > pool_cfg.pg_size ||
|
|
pool_cfg.scheme === 'xor' && pool_cfg.pg_minsize < (pool_cfg.pg_size - 1))
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid pg_minsize');
|
|
return false;
|
|
}
|
|
if (pool_cfg.scheme === 'xor' && pool_cfg.parity_chunks != 0 && pool_cfg.parity_chunks != 1)
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid parity_chunks (must be 1)');
|
|
return false;
|
|
}
|
|
if (pool_cfg.scheme === 'jerasure' && (pool_cfg.parity_chunks < 1 || pool_cfg.parity_chunks > pool_cfg.pg_size-2))
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid parity_chunks (must be between 1 and pg_size-2)');
|
|
return false;
|
|
}
|
|
if (!pool_cfg.pg_count || pool_cfg.pg_count < 1)
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid pg_count');
|
|
return false;
|
|
}
|
|
if (!pool_cfg.name)
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has empty name');
|
|
return false;
|
|
}
|
|
if (pool_cfg.max_osd_combinations < 100)
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid max_osd_combinations (must be at least 100)');
|
|
return false;
|
|
}
|
|
if (pool_cfg.root_node && typeof(pool_cfg.root_node) != 'string')
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid root_node (must be a string)');
|
|
return false;
|
|
}
|
|
if (pool_cfg.osd_tags && typeof(pool_cfg.osd_tags) != 'string' &&
|
|
(!(pool_cfg.osd_tags instanceof Array) || pool_cfg.osd_tags.filter(t => typeof t != 'string').length > 0))
|
|
{
|
|
if (warn)
|
|
console.log('Pool '+pool_id+' has invalid osd_tags (must be a string or array of strings)');
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
filter_osds_by_tags(orig_tree, flat_tree, tags)
|
|
{
|
|
if (!tags)
|
|
{
|
|
return;
|
|
}
|
|
for (const tag of (tags instanceof Array ? tags : [ tags ]))
|
|
{
|
|
for (const host in flat_tree)
|
|
{
|
|
let found = 0;
|
|
for (const osd in flat_tree[host])
|
|
{
|
|
if (!orig_tree[osd].tags || !orig_tree[osd].tags[tag])
|
|
delete flat_tree[host][osd];
|
|
else
|
|
found++;
|
|
}
|
|
if (!found)
|
|
{
|
|
delete flat_tree[host];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
async recheck_pgs()
|
|
{
|
|
// Take configuration and state, check it against the stored configuration hash
|
|
// Recalculate PGs and save them to etcd if the configuration is changed
|
|
// FIXME: Also do not change anything if the distribution is good enough and no PGs are degraded
|
|
const { up_osds, levels, osd_tree } = this.get_osd_tree();
|
|
const tree_cfg = {
|
|
osd_tree,
|
|
pools: this.state.config.pools,
|
|
};
|
|
const tree_hash = sha1hex(stableStringify(tree_cfg));
|
|
if (this.state.config.pgs.hash != tree_hash)
|
|
{
|
|
// Something has changed
|
|
const etcd_request = { compare: [], success: [] };
|
|
for (const pool_id in (this.state.config.pgs||{}).items||{})
|
|
{
|
|
if (!this.state.config.pools[pool_id])
|
|
{
|
|
// Pool deleted. Delete all PGs, but first stop them.
|
|
if (!await this.stop_all_pgs(pool_id))
|
|
{
|
|
this.schedule_recheck();
|
|
return;
|
|
}
|
|
const prev_pgs = [];
|
|
for (const pg in this.state.config.pgs.items[pool_id]||{})
|
|
{
|
|
prev_pgs[pg-1] = this.state.config.pgs.items[pool_id][pg].osd_set;
|
|
}
|
|
this.save_new_pgs_txn(etcd_request, pool_id, up_osds, prev_pgs, [], []);
|
|
}
|
|
}
|
|
for (const pool_id in this.state.config.pools)
|
|
{
|
|
const pool_cfg = this.state.config.pools[pool_id];
|
|
if (!this.validate_pool_cfg(pool_id, pool_cfg, false))
|
|
{
|
|
continue;
|
|
}
|
|
let pool_tree = osd_tree[pool_cfg.root_node || ''];
|
|
pool_tree = pool_tree ? pool_tree.children : [];
|
|
pool_tree = LPOptimizer.flatten_tree(pool_tree, levels, pool_cfg.failure_domain, 'osd');
|
|
this.filter_osds_by_tags(osd_tree, pool_tree, pool_cfg.osd_tags);
|
|
const prev_pgs = [];
|
|
for (const pg in ((this.state.config.pgs.items||{})[pool_id]||{})||{})
|
|
{
|
|
prev_pgs[pg-1] = this.state.config.pgs.items[pool_id][pg].osd_set;
|
|
}
|
|
const pg_history = [];
|
|
const old_pg_count = prev_pgs.length;
|
|
let optimize_result;
|
|
if (old_pg_count > 0)
|
|
{
|
|
if (old_pg_count != pool_cfg.pg_count)
|
|
{
|
|
// PG count changed. Need to bring all PGs down.
|
|
if (!await this.stop_all_pgs(pool_id))
|
|
{
|
|
this.schedule_recheck();
|
|
return;
|
|
}
|
|
PGUtil.scale_pg_count(prev_pgs, this.state.pg.history[pool_id]||{}, pg_history, pool_cfg.pg_count);
|
|
}
|
|
optimize_result = await LPOptimizer.optimize_change({
|
|
prev_pgs,
|
|
osd_tree: pool_tree,
|
|
pg_size: pool_cfg.pg_size,
|
|
pg_minsize: pool_cfg.pg_minsize,
|
|
max_combinations: pool_cfg.max_osd_combinations,
|
|
});
|
|
}
|
|
else
|
|
{
|
|
optimize_result = await LPOptimizer.optimize_initial({
|
|
osd_tree: pool_tree,
|
|
pg_count: pool_cfg.pg_count,
|
|
pg_size: pool_cfg.pg_size,
|
|
pg_minsize: pool_cfg.pg_minsize,
|
|
max_combinations: pool_cfg.max_osd_combinations,
|
|
});
|
|
}
|
|
if (old_pg_count != optimize_result.int_pgs.length)
|
|
{
|
|
console.log(
|
|
`PG count for pool ${pool_id} (${pool_cfg.name || 'unnamed'})`+
|
|
` changed from: ${old_pg_count} to ${optimize_result.int_pgs.length}`
|
|
);
|
|
}
|
|
LPOptimizer.print_change_stats(optimize_result);
|
|
this.save_new_pgs_txn(etcd_request, pool_id, up_osds, prev_pgs, optimize_result.int_pgs, pg_history);
|
|
}
|
|
this.state.config.pgs.hash = tree_hash;
|
|
await this.save_pg_config();
|
|
}
|
|
else
|
|
{
|
|
// Nothing changed, but we still want to check for down OSDs
|
|
let changed = false;
|
|
for (const pool_id in this.state.config.pools)
|
|
{
|
|
const pool_cfg = this.state.config.pools[pool_id];
|
|
if (!this.validate_pool_cfg(pool_id, pool_cfg, false))
|
|
{
|
|
continue;
|
|
}
|
|
const replicated = pool_cfg.scheme === 'replicated';
|
|
for (const pg_num in ((this.state.config.pgs.items||{})[pool_id]||{})||{})
|
|
{
|
|
const pg_cfg = this.state.config.pgs.items[pool_id][pg_num];
|
|
if (!Number(pg_cfg.primary) || !up_osds[pg_cfg.primary])
|
|
{
|
|
let alive_set;
|
|
if (replicated)
|
|
alive_set = pg_cfg.osd_set.filter(osd_num => osd_num && up_osds[osd_num]);
|
|
else
|
|
{
|
|
// Prefer data OSDs for EC because they can actually read something without an additional network hop
|
|
alive_set = pg_cfg.osd_set.slice(0, pool_cfg.pg_minsize).filter(osd_num => osd_num && up_osds[osd_num]);
|
|
if (!alive_set.length)
|
|
alive_set = pg_cfg.osd_set.filter(osd_num => osd_num && up_osds[osd_num]);
|
|
}
|
|
const new_primary = alive_set.length ? alive_set[Math.floor(Math.random()*alive_set.length)] : 0;
|
|
if (pg_cfg.primary != new_primary)
|
|
{
|
|
console.log(
|
|
`Moving pool ${pool_id} (${pool_cfg.name || 'unnamed'}) PG ${pg_num}`+
|
|
` primary OSD from ${pg_cfg.primary} to ${new_primary}`
|
|
);
|
|
changed = true;
|
|
pg_cfg.primary = new_primary;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (changed)
|
|
{
|
|
await this.save_pg_config();
|
|
}
|
|
}
|
|
}
|
|
|
|
async save_pg_config(etcd_request = { compare: [], success: [] })
|
|
{
|
|
etcd_request.compare.push(
|
|
{ key: b64(this.etcd_prefix+'/mon/master'), target: 'LEASE', lease: ''+this.etcd_lease_id },
|
|
{ key: b64(this.etcd_prefix+'/config/pgs'), target: 'MOD', mod_revision: ''+this.etcd_watch_revision, result: 'LESS' },
|
|
);
|
|
etcd_request.success.push(
|
|
{ requestPut: { key: b64(this.etcd_prefix+'/config/pgs'), value: b64(JSON.stringify(this.state.config.pgs)) } },
|
|
);
|
|
const res = await this.etcd_call('/kv/txn', etcd_request, this.config.etcd_mon_timeout, 0);
|
|
if (!res.succeeded)
|
|
{
|
|
console.log('Someone changed PG configuration while we also tried to change it. Retrying in '+this.config.mon_change_timeout+' ms');
|
|
this.schedule_recheck();
|
|
return;
|
|
}
|
|
console.log('PG configuration successfully changed');
|
|
}
|
|
|
|
// Schedule next recheck at least at <unixtime>
|
|
schedule_next_recheck_at(unixtime)
|
|
{
|
|
this.next_recheck_at = !this.next_recheck_at || this.next_recheck_at > unixtime
|
|
? unixtime : this.next_recheck_at;
|
|
const now = Date.now()/1000;
|
|
if (this.next_recheck_timer)
|
|
{
|
|
clearTimeout(this.next_recheck_timer);
|
|
this.next_recheck_timer = null;
|
|
}
|
|
if (this.next_recheck_at < now)
|
|
{
|
|
this.next_recheck_at = 0;
|
|
this.schedule_recheck();
|
|
}
|
|
else
|
|
{
|
|
this.next_recheck_timer = setTimeout(() =>
|
|
{
|
|
this.next_recheck_timer = null;
|
|
this.next_recheck_at = 0;
|
|
this.schedule_recheck();
|
|
}, now-this.next_recheck_at);
|
|
}
|
|
}
|
|
|
|
// Schedule a recheck to run after a small timeout (1s)
|
|
// If already scheduled, cancel previous timer and schedule it again
|
|
// This is required for multiple change events to trigger at most 1 recheck in 1s
|
|
schedule_recheck()
|
|
{
|
|
if (this.recheck_timer)
|
|
{
|
|
clearTimeout(this.recheck_timer);
|
|
this.recheck_timer = null;
|
|
}
|
|
this.recheck_timer = setTimeout(() =>
|
|
{
|
|
this.recheck_timer = null;
|
|
this.recheck_pgs().catch(console.error);
|
|
}, this.config.mon_change_timeout || 1000);
|
|
}
|
|
|
|
sum_stats()
|
|
{
|
|
let overflow = false;
|
|
this.prev_stats = this.prev_stats || { op_stats: {}, subop_stats: {}, recovery_stats: {} };
|
|
const op_stats = {}, subop_stats = {}, recovery_stats = {};
|
|
for (const osd in this.state.osd.stats)
|
|
{
|
|
const st = this.state.osd.stats[osd];
|
|
for (const op in st.op_stats||{})
|
|
{
|
|
op_stats[op] = op_stats[op] || { count: 0n, usec: 0n, bytes: 0n };
|
|
op_stats[op].count += BigInt(st.op_stats.count||0);
|
|
op_stats[op].usec += BigInt(st.op_stats.usec||0);
|
|
op_stats[op].bytes += BigInt(st.op_stats.bytes||0);
|
|
}
|
|
for (const op in st.subop_stats||{})
|
|
{
|
|
subop_stats[op] = subop_stats[op] || { count: 0n, usec: 0n };
|
|
subop_stats[op].count += BigInt(st.subop_stats.count||0);
|
|
subop_stats[op].usec += BigInt(st.subop_stats.usec||0);
|
|
}
|
|
for (const op in st.recovery_stats||{})
|
|
{
|
|
recovery_stats[op] = recovery_stats[op] || { count: 0n, bytes: 0n };
|
|
recovery_stats[op].count += BigInt(st.recovery_stats.count||0);
|
|
recovery_stats[op].bytes += BigInt(st.recovery_stats.bytes||0);
|
|
}
|
|
}
|
|
for (const op in op_stats)
|
|
{
|
|
if (op_stats[op].count >= 0x10000000000000000n)
|
|
{
|
|
if (!this.prev_stats.op_stats[op])
|
|
{
|
|
overflow = true;
|
|
}
|
|
else
|
|
{
|
|
op_stats[op].count -= this.prev_stats.op_stats[op].count;
|
|
op_stats[op].usec -= this.prev_stats.op_stats[op].usec;
|
|
op_stats[op].bytes -= this.prev_stats.op_stats[op].bytes;
|
|
}
|
|
}
|
|
}
|
|
for (const op in subop_stats)
|
|
{
|
|
if (subop_stats[op].count >= 0x10000000000000000n)
|
|
{
|
|
if (!this.prev_stats.subop_stats[op])
|
|
{
|
|
overflow = true;
|
|
}
|
|
else
|
|
{
|
|
subop_stats[op].count -= this.prev_stats.subop_stats[op].count;
|
|
subop_stats[op].usec -= this.prev_stats.subop_stats[op].usec;
|
|
}
|
|
}
|
|
}
|
|
for (const op in recovery_stats)
|
|
{
|
|
if (recovery_stats[op].count >= 0x10000000000000000n)
|
|
{
|
|
if (!this.prev_stats.recovery_stats[op])
|
|
{
|
|
overflow = true;
|
|
}
|
|
else
|
|
{
|
|
recovery_stats[op].count -= this.prev_stats.recovery_stats[op].count;
|
|
recovery_stats[op].bytes -= this.prev_stats.recovery_stats[op].bytes;
|
|
}
|
|
}
|
|
}
|
|
const object_counts = { object: 0n, clean: 0n, misplaced: 0n, degraded: 0n, incomplete: 0n };
|
|
for (const pool_id in this.state.pg.stats)
|
|
{
|
|
for (const pg_num in this.state.pg.stats[pool_id])
|
|
{
|
|
const st = this.state.pg.stats[pool_id][pg_num];
|
|
for (const k in object_counts)
|
|
{
|
|
if (st[k+'_count'])
|
|
{
|
|
object_counts[k] += BigInt(st[k+'_count']);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return (this.prev_stats = { overflow, op_stats, subop_stats, recovery_stats, object_counts });
|
|
}
|
|
|
|
async update_total_stats()
|
|
{
|
|
const stats = this.sum_stats();
|
|
if (!stats.overflow)
|
|
{
|
|
// Convert to strings, serialize and save
|
|
const ser = {};
|
|
for (const st of [ 'op_stats', 'subop_stats', 'recovery_stats' ])
|
|
{
|
|
ser[st] = {};
|
|
for (const op in stats[st])
|
|
{
|
|
ser[st][op] = {};
|
|
for (const k in stats[st][op])
|
|
{
|
|
ser[st][op][k] = ''+stats[st][op][k];
|
|
}
|
|
}
|
|
}
|
|
ser.object_counts = {};
|
|
for (const k in stats.object_counts)
|
|
{
|
|
ser.object_counts[k] = ''+stats.object_counts[k];
|
|
}
|
|
await this.etcd_call('/kv/txn', {
|
|
success: [ { requestPut: { key: b64(this.etcd_prefix+'/stats'), value: b64(JSON.stringify(ser)) } } ],
|
|
}, this.config.etcd_mon_timeout, 0);
|
|
}
|
|
}
|
|
|
|
schedule_update_stats()
|
|
{
|
|
if (this.stats_timer)
|
|
{
|
|
clearTimeout(this.stats_timer);
|
|
this.stats_timer = null;
|
|
}
|
|
this.stats_timer = setTimeout(() =>
|
|
{
|
|
this.stats_timer = null;
|
|
this.update_total_stats().catch(console.error);
|
|
}, this.config.mon_stats_timeout || 1000);
|
|
}
|
|
|
|
parse_kv(kv)
|
|
{
|
|
if (!kv || !kv.key)
|
|
{
|
|
return;
|
|
}
|
|
kv.key = de64(kv.key);
|
|
kv.value = kv.value ? de64(kv.value) : null;
|
|
let key = kv.key.substr(this.etcd_prefix.length+1);
|
|
if (!this.constructor.etcd_allow.exec(key))
|
|
{
|
|
console.log('Bad key in etcd: '+kv.key+' = '+kv.value);
|
|
return;
|
|
}
|
|
try
|
|
{
|
|
kv.value = kv.value ? JSON.parse(kv.value) : null;
|
|
}
|
|
catch (e)
|
|
{
|
|
console.log('Bad value in etcd: '+kv.key+' = '+kv.value);
|
|
return;
|
|
}
|
|
key = key.split('/');
|
|
let cur = this.state;
|
|
for (let i = 0; i < key.length-1; i++)
|
|
{
|
|
cur = (cur[key[i]] = cur[key[i]] || {});
|
|
}
|
|
cur[key[key.length-1]] = kv.value;
|
|
if (key.join('/') === 'config/global')
|
|
{
|
|
this.state.config.global = this.state.config.global || {};
|
|
this.config = this.state.config.global;
|
|
this.check_config();
|
|
for (const osd_num in this.state.osd.stats)
|
|
{
|
|
// Recheck PGs <osd_out_time> later
|
|
this.schedule_next_recheck_at(
|
|
!this.state.osd.stats[osd_num] ? 0 : this.state.osd.stats[osd_num].time+this.config.osd_out_time
|
|
);
|
|
}
|
|
}
|
|
else if (key.join('/') === 'config/pools')
|
|
{
|
|
for (const pool_id in this.state.config.pools)
|
|
{
|
|
// Adjust pool configuration so PG distribution hash doesn't change on recheck()
|
|
const pool_cfg = this.state.config.pools[pool_id];
|
|
this.validate_pool_cfg(pool_id, pool_cfg, true);
|
|
}
|
|
}
|
|
else if (key[0] === 'osd' && key[1] === 'stats')
|
|
{
|
|
// Recheck PGs <osd_out_time> later
|
|
this.schedule_next_recheck_at(
|
|
!this.state.osd.stats[key[2]] ? 0 : this.state.osd.stats[key[2]].time+this.config.osd_out_time
|
|
);
|
|
}
|
|
}
|
|
|
|
async etcd_call(path, body, timeout, retries)
|
|
{
|
|
let retry = 0;
|
|
if (retries >= 0 && retries < 1)
|
|
{
|
|
retries = 1;
|
|
}
|
|
while (retries < 0 || retry < retries)
|
|
{
|
|
const base = this.etcd_urls[Math.floor(Math.random()*this.etcd_urls.length)];
|
|
const res = await POST(base+path, body, timeout);
|
|
if (res.error)
|
|
{
|
|
console.error('etcd returned error: '+res.error);
|
|
break;
|
|
}
|
|
if (res.json)
|
|
{
|
|
if (res.json.error)
|
|
{
|
|
console.error('etcd returned error: '+res.json.error);
|
|
break;
|
|
}
|
|
return res.json;
|
|
}
|
|
retry++;
|
|
}
|
|
this.die();
|
|
}
|
|
|
|
die(err)
|
|
{
|
|
// In fact we can just try to rejoin
|
|
console.error(new Error(err || 'Cluster connection failed'));
|
|
process.exit(1);
|
|
}
|
|
|
|
local_ips()
|
|
{
|
|
const ips = [];
|
|
const ifaces = os.networkInterfaces();
|
|
for (const ifname in ifaces)
|
|
{
|
|
for (const iface of ifaces[ifname])
|
|
{
|
|
if (iface.family == 'IPv4' && !iface.internal)
|
|
{
|
|
ips.push(iface.address);
|
|
}
|
|
}
|
|
}
|
|
return ips;
|
|
}
|
|
}
|
|
|
|
function POST(url, body, timeout)
|
|
{
|
|
return new Promise((ok, no) =>
|
|
{
|
|
const body_text = Buffer.from(JSON.stringify(body));
|
|
let timer_id = timeout > 0 ? setTimeout(() =>
|
|
{
|
|
if (req)
|
|
req.abort();
|
|
req = null;
|
|
ok({ error: 'timeout' });
|
|
}, timeout) : null;
|
|
let req = http.request(url, { method: 'POST', headers: {
|
|
'Content-Type': 'application/json',
|
|
'Content-Length': body_text.length,
|
|
} }, (res) =>
|
|
{
|
|
if (!req)
|
|
{
|
|
return;
|
|
}
|
|
clearTimeout(timer_id);
|
|
let res_body = '';
|
|
res.setEncoding('utf8');
|
|
res.on('data', chunk => { res_body += chunk; });
|
|
res.on('end', () =>
|
|
{
|
|
if (res.statusCode != 200)
|
|
{
|
|
ok({ error: res_body, code: res.statusCode });
|
|
return;
|
|
}
|
|
try
|
|
{
|
|
res_body = JSON.parse(res_body);
|
|
ok({ response: res, json: res_body });
|
|
}
|
|
catch (e)
|
|
{
|
|
ok({ error: e, response: res, body: res_body });
|
|
}
|
|
});
|
|
});
|
|
req.write(body_text);
|
|
req.end();
|
|
});
|
|
}
|
|
|
|
function b64(str)
|
|
{
|
|
return Buffer.from(str).toString('base64');
|
|
}
|
|
|
|
function de64(str)
|
|
{
|
|
return Buffer.from(str, 'base64').toString();
|
|
}
|
|
|
|
function sha1hex(str)
|
|
{
|
|
const hash = crypto.createHash('sha1');
|
|
hash.update(str);
|
|
return hash.digest('hex');
|
|
}
|
|
|
|
Mon.etcd_allow = etcd_allow;
|
|
Mon.etcd_tree = etcd_tree;
|
|
|
|
module.exports = Mon;
|