/
Monitor.cc
4860 lines (4143 loc) · 138 KB
/
Monitor.cc
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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include <sstream>
#include <stdlib.h>
#include <signal.h>
#include <limits.h>
#include <cstring>
#include "Monitor.h"
#include "common/version.h"
#include "osd/OSDMap.h"
#include "MonitorStore.h"
#include "MonitorDBStore.h"
#include "msg/Messenger.h"
#include "messages/PaxosServiceMessage.h"
#include "messages/MMonMap.h"
#include "messages/MMonGetMap.h"
#include "messages/MMonGetVersion.h"
#include "messages/MMonGetVersionReply.h"
#include "messages/MGenericMessage.h"
#include "messages/MMonCommand.h"
#include "messages/MMonCommandAck.h"
#include "messages/MMonSync.h"
#include "messages/MMonScrub.h"
#include "messages/MMonProbe.h"
#include "messages/MMonJoin.h"
#include "messages/MMonPaxos.h"
#include "messages/MRoute.h"
#include "messages/MForward.h"
#include "messages/MMonSubscribe.h"
#include "messages/MMonSubscribeAck.h"
#include "messages/MAuthReply.h"
#include "messages/MTimeCheck.h"
#include "messages/MMonHealth.h"
#include "messages/MPing.h"
#include "common/strtol.h"
#include "common/ceph_argparse.h"
#include "common/Timer.h"
#include "common/Clock.h"
#include "common/errno.h"
#include "common/perf_counters.h"
#include "common/admin_socket.h"
#include "include/color.h"
#include "include/ceph_fs.h"
#include "include/str_list.h"
#include "include/str_map.h"
#include "OSDMonitor.h"
#include "MDSMonitor.h"
#include "MonmapMonitor.h"
#include "PGMonitor.h"
#include "LogMonitor.h"
#include "AuthMonitor.h"
#include "mon/QuorumService.h"
#include "mon/HealthMonitor.h"
#include "mon/ConfigKeyService.h"
#include "auth/AuthMethodList.h"
#include "auth/KeyRing.h"
#include "common/config.h"
#include "common/cmdparse.h"
#include "include/assert.h"
#define dout_subsys ceph_subsys_mon
#undef dout_prefix
#define dout_prefix _prefix(_dout, this)
static ostream& _prefix(std::ostream *_dout, const Monitor *mon) {
return *_dout << "mon." << mon->name << "@" << mon->rank
<< "(" << mon->get_state_name() << ") e" << mon->monmap->get_epoch() << " ";
}
const string Monitor::MONITOR_NAME = "monitor";
const string Monitor::MONITOR_STORE_PREFIX = "monitor_store";
#undef COMMAND
MonCommand mon_commands[] = {
#define COMMAND(parsesig, helptext, modulename, req_perms, avail) \
{parsesig, helptext, modulename, req_perms, avail},
#include <mon/MonCommands.h>
};
MonCommand classic_mon_commands[] = {
#include <mon/DumplingMonCommands.h>
};
long parse_pos_long(const char *s, ostream *pss)
{
if (*s == '-' || *s == '+') {
if (pss)
*pss << "expected numerical value, got: " << s;
return -EINVAL;
}
string err;
long r = strict_strtol(s, 10, &err);
if ((r == 0) && !err.empty()) {
if (pss)
*pss << err;
return -1;
}
if (r < 0) {
if (pss)
*pss << "unable to parse positive integer '" << s << "'";
return -1;
}
return r;
}
Monitor::Monitor(CephContext* cct_, string nm, MonitorDBStore *s,
Messenger *m, MonMap *map) :
Dispatcher(cct_),
name(nm),
rank(-1),
messenger(m),
con_self(m ? m->get_loopback_connection() : NULL),
lock("Monitor::lock"),
timer(cct_, lock),
has_ever_joined(false),
logger(NULL), cluster_logger(NULL), cluster_logger_registered(false),
monmap(map),
log_client(cct_, messenger, monmap, LogClient::FLAG_MON),
key_server(cct, &keyring),
auth_cluster_required(cct,
cct->_conf->auth_supported.length() ?
cct->_conf->auth_supported : cct->_conf->auth_cluster_required),
auth_service_required(cct,
cct->_conf->auth_supported.length() ?
cct->_conf->auth_supported : cct->_conf->auth_service_required),
leader_supported_mon_commands(NULL),
leader_supported_mon_commands_size(0),
store(s),
state(STATE_PROBING),
elector(this),
required_features(0),
leader(0),
quorum_features(0),
scrub_version(0),
// sync state
sync_provider_count(0),
sync_cookie(0),
sync_full(false),
sync_start_version(0),
sync_timeout_event(NULL),
sync_last_committed_floor(0),
timecheck_round(0),
timecheck_acks(0),
timecheck_event(NULL),
probe_timeout_event(NULL),
paxos_service(PAXOS_NUM),
admin_hook(NULL),
routed_request_tid(0)
{
rank = -1;
clog = log_client.create_channel(CLOG_CHANNEL_CLUSTER);
audit_clog = log_client.create_channel(CLOG_CHANNEL_AUDIT);
update_log_clients();
paxos = new Paxos(this, "paxos");
paxos_service[PAXOS_MDSMAP] = new MDSMonitor(this, paxos, "mdsmap");
paxos_service[PAXOS_MONMAP] = new MonmapMonitor(this, paxos, "monmap");
paxos_service[PAXOS_OSDMAP] = new OSDMonitor(this, paxos, "osdmap");
paxos_service[PAXOS_PGMAP] = new PGMonitor(this, paxos, "pgmap");
paxos_service[PAXOS_LOG] = new LogMonitor(this, paxos, "logm");
paxos_service[PAXOS_AUTH] = new AuthMonitor(this, paxos, "auth");
health_monitor = new HealthMonitor(this);
config_key_service = new ConfigKeyService(this, paxos);
mon_caps = new MonCap();
bool r = mon_caps->parse("allow *", NULL);
assert(r);
exited_quorum = ceph_clock_now(g_ceph_context);
// assume our commands until we have an election. this only means
// we won't reply with EINVAL before the election; any command that
// actually matters will wait until we have quorum etc and then
// retry (and revalidate).
const MonCommand *cmds;
int cmdsize;
get_locally_supported_monitor_commands(&cmds, &cmdsize);
set_leader_supported_commands(cmds, cmdsize);
}
PaxosService *Monitor::get_paxos_service_by_name(const string& name)
{
if (name == "mdsmap")
return paxos_service[PAXOS_MDSMAP];
if (name == "monmap")
return paxos_service[PAXOS_MONMAP];
if (name == "osdmap")
return paxos_service[PAXOS_OSDMAP];
if (name == "pgmap")
return paxos_service[PAXOS_PGMAP];
if (name == "logm")
return paxos_service[PAXOS_LOG];
if (name == "auth")
return paxos_service[PAXOS_AUTH];
assert(0 == "given name does not match known paxos service");
return NULL;
}
Monitor::~Monitor()
{
for (vector<PaxosService*>::iterator p = paxos_service.begin(); p != paxos_service.end(); ++p)
delete *p;
delete health_monitor;
delete config_key_service;
delete paxos;
assert(session_map.sessions.empty());
delete mon_caps;
if (leader_supported_mon_commands != mon_commands &&
leader_supported_mon_commands != classic_mon_commands)
delete[] leader_supported_mon_commands;
}
class AdminHook : public AdminSocketHook {
Monitor *mon;
public:
AdminHook(Monitor *m) : mon(m) {}
bool call(std::string command, cmdmap_t& cmdmap, std::string format,
bufferlist& out) {
stringstream ss;
mon->do_admin_command(command, cmdmap, format, ss);
out.append(ss);
return true;
}
};
void Monitor::do_admin_command(string command, cmdmap_t& cmdmap, string format,
ostream& ss)
{
Mutex::Locker l(lock);
boost::scoped_ptr<Formatter> f(new_formatter(format));
string args;
for (cmdmap_t::iterator p = cmdmap.begin();
p != cmdmap.end(); ++p) {
if (p->first == "prefix")
continue;
if (!args.empty())
args += ", ";
args += cmd_vartype_stringify(p->second);
}
args = "[" + args + "]";
bool read_only = false;
if (command == "mon_status" || command == "quorum_status") {
read_only = true;
}
(read_only ? audit_clog->debug() : audit_clog->info())
<< "from='admin socket' entity='admin socket' "
<< "cmd='" << command << "' args=" << args << ": dispatch";
if (command == "mon_status") {
get_mon_status(f.get(), ss);
if (f)
f->flush(ss);
} else if (command == "quorum_status") {
_quorum_status(f.get(), ss);
} else if (command == "sync_force") {
string validate;
if ((!cmd_getval(g_ceph_context, cmdmap, "validate", validate)) ||
(validate != "--yes-i-really-mean-it")) {
ss << "are you SURE? this will mean the monitor store will be erased "
"the next time the monitor is restarted. pass "
"'--yes-i-really-mean-it' if you really do.";
goto abort;
}
sync_force(f.get(), ss);
} else if (command.find("add_bootstrap_peer_hint") == 0) {
if (!_add_bootstrap_peer_hint(command, cmdmap, ss))
goto abort;
} else if (command == "quorum enter") {
elector.start_participating();
start_election();
ss << "started responding to quorum, initiated new election";
} else if (command == "quorum exit") {
start_election();
elector.stop_participating();
ss << "stopped responding to quorum, initiated new election";
} else {
assert(0 == "bad AdminSocket command binding");
}
(read_only ? audit_clog->debug() : audit_clog->info())
<< "from='admin socket' "
<< "entity='admin socket' "
<< "cmd=" << command << " "
<< "args=" << args << ": finished";
return;
abort:
(read_only ? audit_clog->debug() : audit_clog->info())
<< "from='admin socket' "
<< "entity='admin socket' "
<< "cmd=" << command << " "
<< "args=" << args << ": aborted";
}
void Monitor::handle_signal(int signum)
{
assert(signum == SIGINT || signum == SIGTERM);
derr << "*** Got Signal " << sys_siglist[signum] << " ***" << dendl;
shutdown();
}
CompatSet Monitor::get_supported_features()
{
CompatSet::FeatureSet ceph_mon_feature_compat;
CompatSet::FeatureSet ceph_mon_feature_ro_compat;
CompatSet::FeatureSet ceph_mon_feature_incompat;
ceph_mon_feature_incompat.insert(CEPH_MON_FEATURE_INCOMPAT_BASE);
ceph_mon_feature_incompat.insert(CEPH_MON_FEATURE_INCOMPAT_SINGLE_PAXOS);
ceph_mon_feature_incompat.insert(CEPH_MON_FEATURE_INCOMPAT_OSD_ERASURE_CODES);
ceph_mon_feature_incompat.insert(CEPH_MON_FEATURE_INCOMPAT_OSDMAP_ENC);
ceph_mon_feature_incompat.insert(CEPH_MON_FEATURE_INCOMPAT_ERASURE_CODE_PLUGINS_V2);
return CompatSet(ceph_mon_feature_compat, ceph_mon_feature_ro_compat,
ceph_mon_feature_incompat);
}
CompatSet Monitor::get_legacy_features()
{
CompatSet::FeatureSet ceph_mon_feature_compat;
CompatSet::FeatureSet ceph_mon_feature_ro_compat;
CompatSet::FeatureSet ceph_mon_feature_incompat;
ceph_mon_feature_incompat.insert(CEPH_MON_FEATURE_INCOMPAT_BASE);
return CompatSet(ceph_mon_feature_compat, ceph_mon_feature_ro_compat,
ceph_mon_feature_incompat);
}
int Monitor::check_features(MonitorDBStore *store)
{
CompatSet required = get_supported_features();
CompatSet ondisk;
read_features_off_disk(store, &ondisk);
if (!required.writeable(ondisk)) {
CompatSet diff = required.unsupported(ondisk);
generic_derr << "ERROR: on disk data includes unsupported features: " << diff << dendl;
return -EPERM;
}
return 0;
}
void Monitor::read_features_off_disk(MonitorDBStore *store, CompatSet *features)
{
bufferlist featuresbl;
store->get(MONITOR_NAME, COMPAT_SET_LOC, featuresbl);
if (featuresbl.length() == 0) {
generic_dout(0) << "WARNING: mon fs missing feature list.\n"
<< "Assuming it is old-style and introducing one." << dendl;
//we only want the baseline ~v.18 features assumed to be on disk.
//If new features are introduced this code needs to disappear or
//be made smarter.
*features = get_legacy_features();
bufferlist bl;
features->encode(bl);
MonitorDBStore::TransactionRef t(new MonitorDBStore::Transaction);
t->put(MONITOR_NAME, COMPAT_SET_LOC, bl);
store->apply_transaction(t);
} else {
bufferlist::iterator it = featuresbl.begin();
features->decode(it);
}
}
void Monitor::read_features()
{
read_features_off_disk(store, &features);
dout(10) << "features " << features << dendl;
apply_compatset_features_to_quorum_requirements();
dout(10) << "required_features " << required_features << dendl;
}
void Monitor::write_features(MonitorDBStore::TransactionRef t)
{
bufferlist bl;
features.encode(bl);
t->put(MONITOR_NAME, COMPAT_SET_LOC, bl);
}
const char** Monitor::get_tracked_conf_keys() const
{
static const char* KEYS[] = {
"mon_lease",
"mon_lease_renew_interval",
"mon_lease_ack_timeout",
// clog & admin clog
"clog_to_monitors",
"clog_to_syslog",
"clog_to_syslog_facility",
"clog_to_syslog_level",
NULL
};
return KEYS;
}
void Monitor::handle_conf_change(const struct md_config_t *conf,
const std::set<std::string> &changed)
{
sanitize_options();
dout(10) << __func__ << " " << changed << dendl;
if (changed.count("clog_to_monitors") ||
changed.count("clog_to_syslog") ||
changed.count("clog_to_syslog_level") ||
changed.count("clog_to_syslog_facility")) {
update_log_clients();
}
}
void Monitor::update_log_client(
LogChannelRef lc, const string &name,
map<string,string> &log_to_monitors,
map<string,string> &log_to_syslog,
map<string,string> &log_channels,
map<string,string> &log_prios)
{
bool to_monitors = (get_str_map_key(log_to_monitors, name,
&CLOG_CHANNEL_DEFAULT) == "true");
bool to_syslog = (get_str_map_key(log_to_syslog, name,
&CLOG_CHANNEL_DEFAULT) == "true");
string syslog_facility = get_str_map_key(log_channels, name,
&CLOG_CHANNEL_DEFAULT);
string prio = get_str_map_key(log_prios, name, &CLOG_CHANNEL_DEFAULT);
lc->set_log_to_monitors(to_monitors);
lc->set_log_to_syslog(to_syslog);
lc->set_syslog_facility(syslog_facility);
lc->set_log_channel(name);
lc->set_log_prio(prio);
dout(15) << __func__ << " " << name << "("
<< " to_monitors: " << (to_monitors ? "true" : "false")
<< " to_syslog: " << (to_syslog ? "true" : "false")
<< " syslog_facility: " << syslog_facility
<< " prio: " << prio << ")" << dendl;
}
void Monitor::update_log_clients()
{
map<string,string> log_to_monitors;
map<string,string> log_to_syslog;
map<string,string> log_channel;
map<string,string> log_prio;
ostringstream oss;
int r = get_conf_str_map_helper(g_conf->clog_to_monitors, oss,
&log_to_monitors, CLOG_CHANNEL_DEFAULT);
if (r < 0) {
derr << __func__ << " error parsing 'clog_to_monitors'" << dendl;
return;
}
r = get_conf_str_map_helper(g_conf->clog_to_syslog, oss,
&log_to_syslog, CLOG_CHANNEL_DEFAULT);
if (r < 0) {
derr << __func__ << " error parsing 'clog_to_syslog'" << dendl;
return;
}
r = get_conf_str_map_helper(g_conf->clog_to_syslog_facility, oss,
&log_channel, CLOG_CHANNEL_DEFAULT);
if (r < 0) {
derr << __func__ << " error parsing 'clog_to_syslog_facility'" << dendl;
return;
}
r = get_conf_str_map_helper(g_conf->clog_to_syslog_level, oss,
&log_prio, CLOG_CHANNEL_DEFAULT);
if (r < 0) {
derr << __func__ << " error parsing 'clog_to_syslog_level'" << dendl;
return;
}
update_log_client(clog, CLOG_CHANNEL_CLUSTER,
log_to_monitors, log_to_syslog,
log_channel, log_prio);
update_log_client(audit_clog, CLOG_CHANNEL_AUDIT,
log_to_monitors, log_to_syslog,
log_channel, log_prio);
}
int Monitor::sanitize_options()
{
int r = 0;
// mon_lease must be greater than mon_lease_renewal; otherwise we
// may incur in leases expiring before they are renewed.
if (g_conf->mon_lease <= g_conf->mon_lease_renew_interval) {
clog->error() << "mon_lease (" << g_conf->mon_lease
<< ") must be greater "
<< "than mon_lease_renew_interval ("
<< g_conf->mon_lease_renew_interval << ")";
r = -EINVAL;
}
// mon_lease_ack_timeout must be greater than mon_lease to make sure we've
// got time to renew the lease and get an ack for it. Having both options
// with the same value, for a given small vale, could mean timing out if
// the monitors happened to be overloaded -- or even under normal load for
// a small enough value.
if (g_conf->mon_lease_ack_timeout <= g_conf->mon_lease) {
clog->error() << "mon_lease_ack_timeout ("
<< g_conf->mon_lease_ack_timeout
<< ") must be greater than mon_lease ("
<< g_conf->mon_lease << ")";
r = -EINVAL;
}
return r;
}
int Monitor::preinit()
{
lock.Lock();
dout(1) << "preinit fsid " << monmap->fsid << dendl;
int r = sanitize_options();
if (r < 0) {
derr << "option sanitization failed!" << dendl;
return r;
}
assert(!logger);
{
PerfCountersBuilder pcb(g_ceph_context, "mon", l_mon_first, l_mon_last);
pcb.add_u64(l_mon_num_sessions, "num_sessions");
pcb.add_u64_counter(l_mon_session_add, "session_add");
pcb.add_u64_counter(l_mon_session_rm, "session_rm");
pcb.add_u64_counter(l_mon_session_trim, "session_trim");
pcb.add_u64_counter(l_mon_num_elections, "num_elections");
pcb.add_u64_counter(l_mon_election_call, "election_call");
pcb.add_u64_counter(l_mon_election_win, "election_win");
pcb.add_u64_counter(l_mon_election_lose, "election_lose");
logger = pcb.create_perf_counters();
cct->get_perfcounters_collection()->add(logger);
}
assert(!cluster_logger);
{
PerfCountersBuilder pcb(g_ceph_context, "cluster", l_cluster_first, l_cluster_last);
pcb.add_u64(l_cluster_num_mon, "num_mon");
pcb.add_u64(l_cluster_num_mon_quorum, "num_mon_quorum");
pcb.add_u64(l_cluster_num_osd, "num_osd");
pcb.add_u64(l_cluster_num_osd_up, "num_osd_up");
pcb.add_u64(l_cluster_num_osd_in, "num_osd_in");
pcb.add_u64(l_cluster_osd_epoch, "osd_epoch");
pcb.add_u64(l_cluster_osd_bytes, "osd_bytes");
pcb.add_u64(l_cluster_osd_bytes_used, "osd_bytes_used");
pcb.add_u64(l_cluster_osd_bytes_avail, "osd_bytes_avail");
pcb.add_u64(l_cluster_num_pool, "num_pool");
pcb.add_u64(l_cluster_num_pg, "num_pg");
pcb.add_u64(l_cluster_num_pg_active_clean, "num_pg_active_clean");
pcb.add_u64(l_cluster_num_pg_active, "num_pg_active");
pcb.add_u64(l_cluster_num_pg_peering, "num_pg_peering");
pcb.add_u64(l_cluster_num_object, "num_object");
pcb.add_u64(l_cluster_num_object_degraded, "num_object_degraded");
pcb.add_u64(l_cluster_num_object_misplaced, "num_object_misplaced");
pcb.add_u64(l_cluster_num_object_unfound, "num_object_unfound");
pcb.add_u64(l_cluster_num_bytes, "num_bytes");
pcb.add_u64(l_cluster_num_mds_up, "num_mds_up");
pcb.add_u64(l_cluster_num_mds_in, "num_mds_in");
pcb.add_u64(l_cluster_num_mds_failed, "num_mds_failed");
pcb.add_u64(l_cluster_mds_epoch, "mds_epoch");
cluster_logger = pcb.create_perf_counters();
}
paxos->init_logger();
// verify cluster_uuid
{
int r = check_fsid();
if (r == -ENOENT)
r = write_fsid();
if (r < 0) {
lock.Unlock();
return r;
}
}
// open compatset
read_features();
// have we ever joined a quorum?
has_ever_joined = (store->get(MONITOR_NAME, "joined") != 0);
dout(10) << "has_ever_joined = " << (int)has_ever_joined << dendl;
if (!has_ever_joined) {
// impose initial quorum restrictions?
list<string> initial_members;
get_str_list(g_conf->mon_initial_members, initial_members);
if (!initial_members.empty()) {
dout(1) << " initial_members " << initial_members << ", filtering seed monmap" << dendl;
monmap->set_initial_members(g_ceph_context, initial_members, name, messenger->get_myaddr(),
&extra_probe_peers);
dout(10) << " monmap is " << *monmap << dendl;
dout(10) << " extra probe peers " << extra_probe_peers << dendl;
}
} else if (!monmap->contains(name)) {
derr << "not in monmap and have been in a quorum before; "
<< "must have been removed" << dendl;
if (g_conf->mon_force_quorum_join) {
dout(0) << "we should have died but "
<< "'mon_force_quorum_join' is set -- allowing boot" << dendl;
} else {
derr << "commit suicide!" << dendl;
return -ENOENT;
}
}
{
// We have a potentially inconsistent store state in hands. Get rid of it
// and start fresh.
bool clear_store = false;
if (store->exists("mon_sync", "in_sync")) {
dout(1) << __func__ << " clean up potentially inconsistent store state"
<< dendl;
clear_store = true;
}
if (store->get("mon_sync", "force_sync") > 0) {
dout(1) << __func__ << " force sync by clearing store state" << dendl;
clear_store = true;
}
if (clear_store) {
set<string> sync_prefixes = get_sync_targets_names();
store->clear(sync_prefixes);
}
}
sync_last_committed_floor = store->get("mon_sync", "last_committed_floor");
dout(10) << "sync_last_committed_floor " << sync_last_committed_floor << dendl;
init_paxos();
health_monitor->init();
if (is_keyring_required()) {
// we need to bootstrap authentication keys so we can form an
// initial quorum.
if (authmon()->get_last_committed() == 0) {
dout(10) << "loading initial keyring to bootstrap authentication for mkfs" << dendl;
bufferlist bl;
store->get("mkfs", "keyring", bl);
KeyRing keyring;
bufferlist::iterator p = bl.begin();
::decode(keyring, p);
extract_save_mon_key(keyring);
}
string keyring_loc = g_conf->mon_data + "/keyring";
r = keyring.load(cct, keyring_loc);
if (r < 0) {
EntityName mon_name;
mon_name.set_type(CEPH_ENTITY_TYPE_MON);
EntityAuth mon_key;
if (key_server.get_auth(mon_name, mon_key)) {
dout(1) << "copying mon. key from old db to external keyring" << dendl;
keyring.add(mon_name, mon_key);
bufferlist bl;
keyring.encode_plaintext(bl);
write_default_keyring(bl);
} else {
derr << "unable to load initial keyring " << g_conf->keyring << dendl;
lock.Unlock();
return r;
}
}
}
admin_hook = new AdminHook(this);
AdminSocket* admin_socket = cct->get_admin_socket();
// unlock while registering to avoid mon_lock -> admin socket lock dependency.
lock.Unlock();
r = admin_socket->register_command("mon_status", "mon_status", admin_hook,
"show current monitor status");
assert(r == 0);
r = admin_socket->register_command("quorum_status", "quorum_status",
admin_hook, "show current quorum status");
assert(r == 0);
r = admin_socket->register_command("sync_force",
"sync_force name=validate,"
"type=CephChoices,"
"strings=--yes-i-really-mean-it",
admin_hook,
"force sync of and clear monitor store");
assert(r == 0);
r = admin_socket->register_command("add_bootstrap_peer_hint",
"add_bootstrap_peer_hint name=addr,"
"type=CephIPAddr",
admin_hook,
"add peer address as potential bootstrap"
" peer for cluster bringup");
assert(r == 0);
r = admin_socket->register_command("quorum enter", "quorum enter",
admin_hook,
"force monitor back into quorum");
assert(r == 0);
r = admin_socket->register_command("quorum exit", "quorum exit",
admin_hook,
"force monitor out of the quorum");
assert(r == 0);
lock.Lock();
// add ourselves as a conf observer
g_conf->add_observer(this);
lock.Unlock();
return 0;
}
int Monitor::init()
{
dout(2) << "init" << dendl;
lock.Lock();
// start ticker
timer.init();
new_tick();
// i'm ready!
messenger->add_dispatcher_tail(this);
bootstrap();
// encode command sets
const MonCommand *cmds;
int cmdsize;
get_locally_supported_monitor_commands(&cmds, &cmdsize);
MonCommand::encode_array(cmds, cmdsize, supported_commands_bl);
get_classic_monitor_commands(&cmds, &cmdsize);
MonCommand::encode_array(cmds, cmdsize, classic_commands_bl);
lock.Unlock();
return 0;
}
void Monitor::init_paxos()
{
dout(10) << __func__ << dendl;
paxos->init();
// init services
for (int i = 0; i < PAXOS_NUM; ++i) {
paxos_service[i]->init();
}
refresh_from_paxos(NULL);
}
void Monitor::refresh_from_paxos(bool *need_bootstrap)
{
dout(10) << __func__ << dendl;
bufferlist bl;
int r = store->get(MONITOR_NAME, "cluster_fingerprint", bl);
if (r >= 0) {
try {
bufferlist::iterator p = bl.begin();
::decode(fingerprint, p);
}
catch (buffer::error& e) {
dout(10) << __func__ << " failed to decode cluster_fingerprint" << dendl;
}
} else {
dout(10) << __func__ << " no cluster_fingerprint" << dendl;
}
for (int i = 0; i < PAXOS_NUM; ++i) {
paxos_service[i]->refresh(need_bootstrap);
}
for (int i = 0; i < PAXOS_NUM; ++i) {
paxos_service[i]->post_paxos_update();
}
}
void Monitor::register_cluster_logger()
{
if (!cluster_logger_registered) {
dout(10) << "register_cluster_logger" << dendl;
cluster_logger_registered = true;
cct->get_perfcounters_collection()->add(cluster_logger);
} else {
dout(10) << "register_cluster_logger - already registered" << dendl;
}
}
void Monitor::unregister_cluster_logger()
{
if (cluster_logger_registered) {
dout(10) << "unregister_cluster_logger" << dendl;
cluster_logger_registered = false;
cct->get_perfcounters_collection()->remove(cluster_logger);
} else {
dout(10) << "unregister_cluster_logger - not registered" << dendl;
}
}
void Monitor::update_logger()
{
cluster_logger->set(l_cluster_num_mon, monmap->size());
cluster_logger->set(l_cluster_num_mon_quorum, quorum.size());
}
void Monitor::shutdown()
{
dout(1) << "shutdown" << dendl;
lock.Lock();
wait_for_paxos_write();
state = STATE_SHUTDOWN;
if (admin_hook) {
AdminSocket* admin_socket = cct->get_admin_socket();
admin_socket->unregister_command("mon_status");
admin_socket->unregister_command("quorum_status");
admin_socket->unregister_command("sync_force");
admin_socket->unregister_command("add_bootstrap_peer_hint");
delete admin_hook;
admin_hook = NULL;
}
elector.shutdown();
// clean up
paxos->shutdown();
for (vector<PaxosService*>::iterator p = paxos_service.begin(); p != paxos_service.end(); ++p)
(*p)->shutdown();
health_monitor->shutdown();
finish_contexts(g_ceph_context, waitfor_quorum, -ECANCELED);
finish_contexts(g_ceph_context, maybe_wait_for_quorum, -ECANCELED);
timer.shutdown();
remove_all_sessions();
if (logger) {
cct->get_perfcounters_collection()->remove(logger);
delete logger;
logger = NULL;
}
if (cluster_logger) {
if (cluster_logger_registered)
cct->get_perfcounters_collection()->remove(cluster_logger);
delete cluster_logger;
cluster_logger = NULL;
}
log_client.shutdown();
// unlock before msgr shutdown...
lock.Unlock();
messenger->shutdown(); // last thing! ceph_mon.cc will delete mon.
}
void Monitor::wait_for_paxos_write()
{
if (paxos->is_writing() || paxos->is_writing_previous()) {
dout(10) << __func__ << " flushing pending write" << dendl;
lock.Unlock();
store->flush();
lock.Lock();
dout(10) << __func__ << " flushed pending write" << dendl;
}
}
void Monitor::bootstrap()
{
dout(10) << "bootstrap" << dendl;
wait_for_paxos_write();
sync_reset_requester();
unregister_cluster_logger();
cancel_probe_timeout();
// note my rank
int newrank = monmap->get_rank(messenger->get_myaddr());
if (newrank < 0 && rank >= 0) {
// was i ever part of the quorum?
if (has_ever_joined) {
dout(0) << " removed from monmap, suicide." << dendl;
exit(0);
}
}
if (newrank != rank) {
dout(0) << " my rank is now " << newrank << " (was " << rank << ")" << dendl;
messenger->set_myname(entity_name_t::MON(newrank));
rank = newrank;
// reset all connections, or else our peers will think we are someone else.
messenger->mark_down_all();
}
// reset
state = STATE_PROBING;
_reset();
// sync store
if (g_conf->mon_compact_on_bootstrap) {
dout(10) << "bootstrap -- triggering compaction" << dendl;
store->compact();
dout(10) << "bootstrap -- finished compaction" << dendl;
}
// singleton monitor?
if (monmap->size() == 1 && rank == 0) {
win_standalone_election();
return;
}
reset_probe_timeout();
// i'm outside the quorum
if (monmap->contains(name))
outside_quorum.insert(name);
// probe monitors
dout(10) << "probing other monitors" << dendl;
for (unsigned i = 0; i < monmap->size(); i++) {
if ((int)i != rank)
messenger->send_message(new MMonProbe(monmap->fsid, MMonProbe::OP_PROBE, name, has_ever_joined),
monmap->get_inst(i));
}
for (set<entity_addr_t>::iterator p = extra_probe_peers.begin();
p != extra_probe_peers.end();
++p) {
if (*p != messenger->get_myaddr()) {
entity_inst_t i;
i.name = entity_name_t::MON(-1);
i.addr = *p;
messenger->send_message(new MMonProbe(monmap->fsid, MMonProbe::OP_PROBE, name, has_ever_joined), i);
}
}
}
bool Monitor::_add_bootstrap_peer_hint(string cmd, cmdmap_t& cmdmap, ostream& ss)
{
string addrstr;
if (!cmd_getval(g_ceph_context, cmdmap, "addr", addrstr)) {
ss << "unable to parse address string value '"
<< cmd_vartype_stringify(cmdmap["addr"]) << "'";
return false;
}
dout(10) << "_add_bootstrap_peer_hint '" << cmd << "' '"
<< addrstr << "'" << dendl;
entity_addr_t addr;
const char *end = 0;