1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 * Ceph - scalable distributed file system
6 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
8 * This is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License version 2.1, as published by the Free Software
11 * Foundation. See file COPYING.
15 #include <sys/types.h>
23 #include "common/config.h"
24 #include "include/ceph_features.h"
26 #include "mon/MonMap.h"
27 #include "mon/Monitor.h"
28 #include "mon/MonitorDBStore.h"
29 #include "mon/MonClient.h"
31 #include "msg/Messenger.h"
33 #include "include/CompatSet.h"
35 #include "common/ceph_argparse.h"
36 #include "common/pick_address.h"
37 #include "common/Timer.h"
38 #include "common/errno.h"
39 #include "common/Preforker.h"
41 #include "global/global_init.h"
42 #include "global/signal_handler.h"
44 #include "perfglue/heap_profiler.h"
46 #include "include/assert.h"
48 #define dout_subsys ceph_subsys_mon
52 void handle_mon_signal(int signum
)
55 mon
->handle_signal(signum
);
59 int obtain_monmap(MonitorDBStore
&store
, bufferlist
&bl
)
61 dout(10) << __func__
<< dendl
;
63 * the monmap may be in one of three places:
64 * 'monmap:<latest_version_no>' - the monmap we'd really like to have
65 * 'mon_sync:latest_monmap' - last monmap backed up for the last sync
66 * 'mkfs:monmap' - a monmap resulting from mkfs
69 if (store
.exists("monmap", "last_committed")) {
70 version_t latest_ver
= store
.get("monmap", "last_committed");
71 if (store
.exists("monmap", latest_ver
)) {
72 int err
= store
.get("monmap", latest_ver
, bl
);
74 assert(bl
.length() > 0);
75 dout(10) << __func__
<< " read last committed monmap ver "
76 << latest_ver
<< dendl
;
81 if (store
.exists("mon_sync", "in_sync")
82 || store
.exists("mon_sync", "force_sync")) {
83 dout(10) << __func__
<< " detected aborted sync" << dendl
;
84 if (store
.exists("mon_sync", "latest_monmap")) {
85 int err
= store
.get("mon_sync", "latest_monmap", bl
);
87 assert(bl
.length() > 0);
88 dout(10) << __func__
<< " read backup monmap" << dendl
;
93 if (store
.exists("mkfs", "monmap")) {
94 dout(10) << __func__
<< " found mkfs monmap" << dendl
;
95 int err
= store
.get("mkfs", "monmap", bl
);
97 assert(bl
.length() > 0);
101 derr
<< __func__
<< " unable to find a monmap" << dendl
;
105 int check_mon_data_exists()
107 string mon_data
= g_conf
->mon_data
;
109 if (::stat(mon_data
.c_str(), &buf
)) {
110 if (errno
!= ENOENT
) {
111 derr
<< "stat(" << mon_data
<< ") " << cpp_strerror(errno
) << dendl
;
118 /** Check whether **mon data** is empty.
120 * Being empty means mkfs has not been run and there's no monitor setup
121 * at **g_conf->mon_data**.
123 * If the directory g_conf->mon_data is not empty we will return -ENOTEMPTY.
124 * Otherwise we will return 0. Any other negative returns will represent
125 * a failure to be handled by the caller.
127 * @return **0** on success, -ENOTEMPTY if not empty or **-errno** otherwise.
129 int check_mon_data_empty()
131 string mon_data
= g_conf
->mon_data
;
133 DIR *dir
= ::opendir(mon_data
.c_str());
135 derr
<< "opendir(" << mon_data
<< ") " << cpp_strerror(errno
) << dendl
;
139 struct dirent
*de
= nullptr;
141 while ((de
= ::readdir(dir
))) {
142 if (string(".") != de
->d_name
&&
143 string("..") != de
->d_name
&&
144 string("kv_backend") != de
->d_name
) {
150 derr
<< "readdir(" << mon_data
<< ") " << cpp_strerror(errno
) << dendl
;
161 cout
<< "usage: ceph-mon -i <ID> [flags]\n"
162 << " --debug_mon n\n"
163 << " debug monitor level (e.g. 10)\n"
165 << " build fresh monitor fs\n"
167 << " force a sync from another mon by wiping local data (BE CAREFUL)\n"
168 << " --yes-i-really-mean-it\n"
169 << " mandatory safeguard for --force-sync\n"
171 << " compact the monitor store\n"
172 << " --osdmap <filename>\n"
173 << " only used when --mkfs is provided: load the osdmap from <filename>\n"
174 << " --inject-monmap <filename>\n"
175 << " write the <filename> monmap to the local monitor store and exit\n"
176 << " --extract-monmap <filename>\n"
177 << " extract the monmap from the local monitor store and exit\n"
178 << " --mon-data <directory>\n"
179 << " where the mon store and keyring are located\n"
181 generic_server_usage();
184 #ifdef BUILDING_FOR_EMBEDDED
185 void cephd_preload_embedded_plugins();
186 extern "C" int cephd_mon(int argc
, const char **argv
)
188 int main(int argc
, const char **argv
)
194 bool compact
= false;
195 bool force_sync
= false;
196 bool yes_really
= false;
197 std::string osdmapfn
, inject_monmap
, extract_monmap
;
199 vector
<const char*> args
;
200 argv_to_vec(argc
, argv
, args
);
203 // We need to specify some default values that may be overridden by the
204 // user, that are specific to the monitor. The options we are overriding
205 // are also used on the OSD (or in any other component that uses leveldb),
206 // so changing them directly in common/config_opts.h is not an option.
207 // This is not the prettiest way of doing this, especially since it has us
208 // having a different place than common/config_opts.h defining default
209 // values, but it's not horribly wrong enough to prevent us from doing it :)
211 // NOTE: user-defined options will take precedence over ours.
213 // leveldb_write_buffer_size = 32*1024*1024 = 33554432 // 32MB
214 // leveldb_cache_size = 512*1024*1204 = 536870912 // 512MB
215 // leveldb_block_size = 64*1024 = 65536 // 64KB
216 // leveldb_compression = false
218 vector
<const char*> def_args
;
219 def_args
.push_back("--leveldb-write-buffer-size=33554432");
220 def_args
.push_back("--leveldb-cache-size=536870912");
221 def_args
.push_back("--leveldb-block-size=65536");
222 def_args
.push_back("--leveldb-compression=false");
223 def_args
.push_back("--leveldb-log=");
227 vector
<const char*> args_copy
= args
;
229 for (std::vector
<const char*>::iterator i
= args_copy
.begin();
230 i
!= args_copy
.end(); ) {
231 if (ceph_argparse_double_dash(args_copy
, i
)) {
233 } else if (ceph_argparse_flag(args_copy
, i
, "--mkfs", (char*)NULL
)) {
234 flags
|= CINIT_FLAG_NO_DAEMON_ACTIONS
;
235 } else if (ceph_argparse_witharg(args_copy
, i
, &val
, "--inject_monmap", (char*)NULL
)) {
236 flags
|= CINIT_FLAG_NO_DAEMON_ACTIONS
;
237 } else if (ceph_argparse_witharg(args_copy
, i
, &val
, "--extract-monmap", (char*)NULL
)) {
238 flags
|= CINIT_FLAG_NO_DAEMON_ACTIONS
;
245 auto cct
= global_init(&def_args
, args
,
246 CEPH_ENTITY_TYPE_MON
, CODE_ENVIRONMENT_DAEMON
,
248 ceph_heap_profiler_init();
252 for (std::vector
<const char*>::iterator i
= args
.begin(); i
!= args
.end(); ) {
253 if (ceph_argparse_double_dash(args
, i
)) {
255 } else if (ceph_argparse_flag(args
, i
, "-h", "--help", (char*)NULL
)) {
257 } else if (ceph_argparse_flag(args
, i
, "--mkfs", (char*)NULL
)) {
259 } else if (ceph_argparse_flag(args
, i
, "--compact", (char*)NULL
)) {
261 } else if (ceph_argparse_flag(args
, i
, "--force-sync", (char*)NULL
)) {
263 } else if (ceph_argparse_flag(args
, i
, "--yes-i-really-mean-it", (char*)NULL
)) {
265 } else if (ceph_argparse_witharg(args
, i
, &val
, "--osdmap", (char*)NULL
)) {
267 } else if (ceph_argparse_witharg(args
, i
, &val
, "--inject_monmap", (char*)NULL
)) {
269 } else if (ceph_argparse_witharg(args
, i
, &val
, "--extract-monmap", (char*)NULL
)) {
270 extract_monmap
= val
;
276 derr
<< "too many arguments: " << args
<< dendl
;
280 if (force_sync
&& !yes_really
) {
281 derr
<< "are you SURE you want to force a sync? this will erase local data and may\n"
282 << "break your mon cluster. pass --yes-i-really-mean-it if you do." << dendl
;
286 if (g_conf
->mon_data
.empty()) {
287 derr
<< "must specify '--mon-data=foo' data path" << dendl
;
291 if (g_conf
->name
.get_id().empty()) {
292 derr
<< "must specify id (--id <id> or --name mon.<id>)" << dendl
;
299 int err
= check_mon_data_exists();
300 if (err
== -ENOENT
) {
301 if (::mkdir(g_conf
->mon_data
.c_str(), 0755)) {
302 derr
<< "mkdir(" << g_conf
->mon_data
<< ") : "
303 << cpp_strerror(errno
) << dendl
;
306 } else if (err
< 0) {
307 derr
<< "error opening '" << g_conf
->mon_data
<< "': "
308 << cpp_strerror(-err
) << dendl
;
312 err
= check_mon_data_empty();
313 if (err
== -ENOTEMPTY
) {
314 // Mon may exist. Let the user know and exit gracefully.
315 derr
<< "'" << g_conf
->mon_data
<< "' already exists and is not empty"
316 << ": monitor may already exist" << dendl
;
318 } else if (err
< 0) {
319 derr
<< "error checking if '" << g_conf
->mon_data
<< "' is empty: "
320 << cpp_strerror(-err
) << dendl
;
324 // resolve public_network -> public_addr
325 pick_addresses(g_ceph_context
, CEPH_PICK_ADDRESS_PUBLIC
);
327 common_init_finish(g_ceph_context
);
329 bufferlist monmapbl
, osdmapbl
;
333 // load or generate monmap
334 if (g_conf
->monmap
.length()) {
335 int err
= monmapbl
.read_file(g_conf
->monmap
.c_str(), &error
);
337 derr
<< argv
[0] << ": error reading " << g_conf
->monmap
<< ": " << error
<< dendl
;
341 monmap
.decode(monmapbl
);
343 // always mark seed/mkfs monmap as epoch 0
346 catch (const buffer::error
& e
) {
347 derr
<< argv
[0] << ": error decoding monmap " << g_conf
->monmap
<< ": " << e
.what() << dendl
;
352 int err
= monmap
.build_initial(g_ceph_context
, oss
);
354 derr
<< oss
.str() << dendl
;
356 derr
<< argv
[0] << ": warning: no initial monitors; must use admin socket to feed hints" << dendl
;
359 // am i part of the initial quorum?
360 if (monmap
.contains(g_conf
->name
.get_id())) {
361 // hmm, make sure the ip listed exists on the current host?
363 } else if (!g_conf
->public_addr
.is_blank_ip()) {
364 entity_addr_t a
= g_conf
->public_addr
;
365 if (a
.get_port() == 0)
366 a
.set_port(CEPH_MON_PORT
);
367 if (monmap
.contains(a
)) {
369 monmap
.get_addr_name(a
, name
);
370 monmap
.rename(name
, g_conf
->name
.get_id());
371 cout
<< argv
[0] << ": renaming mon." << name
<< " " << a
372 << " to mon." << g_conf
->name
.get_id() << std::endl
;
375 // is a local address listed without a name? if so, name myself.
376 list
<entity_addr_t
> ls
;
377 monmap
.list_addrs(ls
);
380 if (have_local_addr(g_ceph_context
, ls
, &local
)) {
382 monmap
.get_addr_name(local
, name
);
384 if (name
.compare(0, 7, "noname-") == 0) {
385 cout
<< argv
[0] << ": mon." << name
<< " " << local
386 << " is local, renaming to mon." << g_conf
->name
.get_id() << std::endl
;
387 monmap
.rename(name
, g_conf
->name
.get_id());
389 cout
<< argv
[0] << ": mon." << name
<< " " << local
390 << " is local, but not 'noname-' + something; not assuming it's me" << std::endl
;
396 if (!g_conf
->fsid
.is_zero()) {
397 monmap
.fsid
= g_conf
->fsid
;
398 cout
<< argv
[0] << ": set fsid to " << g_conf
->fsid
<< std::endl
;
401 if (monmap
.fsid
.is_zero()) {
402 derr
<< argv
[0] << ": generated monmap has no fsid; use '--fsid <uuid>'" << dendl
;
406 //monmap.print(cout);
409 if (osdmapfn
.length()) {
410 err
= osdmapbl
.read_file(osdmapfn
.c_str(), &error
);
412 derr
<< argv
[0] << ": error reading " << osdmapfn
<< ": "
419 MonitorDBStore
store(g_conf
->mon_data
);
421 int r
= store
.create_and_open(oss
);
423 derr
<< oss
.str() << dendl
;
425 derr
<< argv
[0] << ": error opening mon data directory at '"
426 << g_conf
->mon_data
<< "': " << cpp_strerror(r
) << dendl
;
431 Monitor
mon(g_ceph_context
, g_conf
->name
.get_id(), &store
, 0, 0, &monmap
);
432 r
= mon
.mkfs(osdmapbl
);
434 derr
<< argv
[0] << ": error creating monfs: " << cpp_strerror(r
) << dendl
;
438 cout
<< argv
[0] << ": created monfs at " << g_conf
->mon_data
439 << " for " << g_conf
->name
<< std::endl
;
443 err
= check_mon_data_exists();
444 if (err
< 0 && err
== -ENOENT
) {
445 derr
<< "monitor data directory at '" << g_conf
->mon_data
<< "'"
446 << " does not exist: have you run 'mkfs'?" << dendl
;
448 } else if (err
< 0) {
449 derr
<< "error accessing monitor data directory at '"
450 << g_conf
->mon_data
<< "': " << cpp_strerror(-err
) << dendl
;
454 err
= check_mon_data_empty();
456 derr
<< "monitor data directory at '" << g_conf
->mon_data
457 << "' is empty: have you run 'mkfs'?" << dendl
;
459 } else if (err
< 0 && err
!= -ENOTEMPTY
) {
460 // we don't want an empty data dir by now
461 derr
<< "error accessing '" << g_conf
->mon_data
<< "': "
462 << cpp_strerror(-err
) << dendl
;
467 // check fs stats. don't start if it's critically close to full.
468 ceph_data_stats_t stats
;
469 int err
= get_fs_stats(stats
, g_conf
->mon_data
.c_str());
471 derr
<< "error checking monitor data's fs stats: " << cpp_strerror(err
)
475 if (stats
.avail_percent
<= g_conf
->mon_data_avail_crit
) {
476 derr
<< "error: monitor data filesystem reached concerning levels of"
477 << " available storage space (available: "
478 << stats
.avail_percent
<< "% " << prettybyte_t(stats
.byte_avail
)
479 << ")\nyou may adjust 'mon data avail crit' to a lower value"
480 << " to make this go away (default: " << g_conf
->mon_data_avail_crit
486 // we fork early to prevent leveldb's environment static state from
489 if (!(flags
& CINIT_FLAG_NO_DAEMON_ACTIONS
)) {
490 if (global_init_prefork(g_ceph_context
) >= 0) {
492 err
= prefork
.prefork(err_msg
);
494 derr
<< err_msg
<< dendl
;
497 if (prefork
.is_parent()) {
498 err
= prefork
.parent_wait(err_msg
);
500 derr
<< err_msg
<< dendl
;
503 global_init_postfork_start(g_ceph_context
);
505 common_init_finish(g_ceph_context
);
506 global_init_chdir(g_ceph_context
);
507 #ifndef BUILDING_FOR_EMBEDDED
508 if (global_init_preload_erasure_code(g_ceph_context
) < 0)
511 cephd_preload_embedded_plugins();
515 MonitorDBStore
*store
= new MonitorDBStore(g_conf
->mon_data
);
518 err
= store
->open(oss
);
520 derr
<< oss
.str() << dendl
;
522 derr
<< "error opening mon data directory at '"
523 << g_conf
->mon_data
<< "': " << cpp_strerror(err
) << dendl
;
529 err
= store
->get(Monitor::MONITOR_NAME
, "magic", magicbl
);
530 if (err
|| !magicbl
.length()) {
531 derr
<< "unable to read magic from mon data" << dendl
;
534 string
magic(magicbl
.c_str(), magicbl
.length()-1); // ignore trailing \n
535 if (strcmp(magic
.c_str(), CEPH_MON_ONDISK_MAGIC
)) {
536 derr
<< "mon fs magic '" << magic
<< "' != current '" << CEPH_MON_ONDISK_MAGIC
<< "'" << dendl
;
540 err
= Monitor::check_features(store
);
542 derr
<< "error checking features: " << cpp_strerror(err
) << dendl
;
546 // inject new monmap?
547 if (!inject_monmap
.empty()) {
550 int r
= bl
.read_file(inject_monmap
.c_str(), &error
);
552 derr
<< "unable to read monmap from " << inject_monmap
<< ": "
558 version_t v
= store
->get("monmap", "last_committed");
559 dout(0) << "last committed monmap epoch is " << v
<< ", injected map will be " << (v
+1)
566 if (tmp
.get_epoch() != v
) {
567 dout(0) << "changing monmap epoch from " << tmp
.get_epoch()
568 << " to " << v
<< dendl
;
572 tmp
.encode(mapbl
, CEPH_FEATURES_ALL
);
575 ::encode(mapbl
, final
);
577 auto t(std::make_shared
<MonitorDBStore::Transaction
>());
579 t
->put("monmap", v
, mapbl
);
580 t
->put("monmap", "latest", final
);
581 t
->put("monmap", "last_committed", v
);
582 store
->apply_transaction(t
);
584 dout(0) << "done." << dendl
;
591 // note that even if we don't find a viable monmap, we should go ahead
592 // and try to build it up in the next if-else block.
594 int err
= obtain_monmap(*store
, mapbl
);
597 monmap
.decode(mapbl
);
598 } catch (const buffer::error
& e
) {
599 derr
<< "can't decode monmap: " << e
.what() << dendl
;
602 derr
<< "unable to obtain a monmap: " << cpp_strerror(err
) << dendl
;
604 if (!extract_monmap
.empty()) {
605 int r
= mapbl
.write_file(extract_monmap
.c_str());
608 derr
<< "error writing monmap to " << extract_monmap
<< ": " << cpp_strerror(r
) << dendl
;
611 derr
<< "wrote monmap to " << extract_monmap
<< dendl
;
616 // this is what i will bind to
617 entity_addr_t ipaddr
;
619 if (monmap
.contains(g_conf
->name
.get_id())) {
620 ipaddr
= monmap
.get_addr(g_conf
->name
.get_id());
622 // print helpful warning if the conf file doesn't match
623 entity_addr_t conf_addr
;
624 std::vector
<std::string
> my_sections
;
625 g_conf
->get_my_sections(my_sections
);
626 std::string mon_addr_str
;
627 if (g_conf
->get_val_from_conf_file(my_sections
, "mon addr",
628 mon_addr_str
, true) == 0) {
629 if (conf_addr
.parse(mon_addr_str
.c_str()) && (ipaddr
!= conf_addr
)) {
630 derr
<< "WARNING: 'mon addr' config option " << conf_addr
631 << " does not match monmap file" << std::endl
632 << " continuing with monmap configuration" << dendl
;
636 dout(0) << g_conf
->name
<< " does not exist in monmap, will attempt to join an existing cluster" << dendl
;
638 pick_addresses(g_ceph_context
, CEPH_PICK_ADDRESS_PUBLIC
);
639 if (!g_conf
->public_addr
.is_blank_ip()) {
640 ipaddr
= g_conf
->public_addr
;
641 if (ipaddr
.get_port() == 0)
642 ipaddr
.set_port(CEPH_MON_PORT
);
643 dout(0) << "using public_addr " << g_conf
->public_addr
<< " -> "
648 int err
= tmpmap
.build_initial(g_ceph_context
, oss
);
650 derr
<< oss
.str() << dendl
;
652 derr
<< argv
[0] << ": error generating initial monmap: "
653 << cpp_strerror(err
) << dendl
;
657 if (tmpmap
.contains(g_conf
->name
.get_id())) {
658 ipaddr
= tmpmap
.get_addr(g_conf
->name
.get_id());
660 derr
<< "no public_addr or public_network specified, and " << g_conf
->name
661 << " not present in monmap or ceph.conf" << dendl
;
668 int rank
= monmap
.get_rank(g_conf
->name
.get_id());
669 std::string public_msgr_type
= g_conf
->ms_public_type
.empty() ? g_conf
->get_val
<std::string
>("ms_type") : g_conf
->ms_public_type
;
670 Messenger
*msgr
= Messenger::create(g_ceph_context
, public_msgr_type
,
671 entity_name_t::MON(rank
), "mon",
672 0, Messenger::HAS_MANY_CONNECTIONS
);
675 msgr
->set_cluster_protocol(CEPH_MON_PROTOCOL
);
676 msgr
->set_default_send_priority(CEPH_MSG_PRIO_HIGH
);
678 msgr
->set_default_policy(Messenger::Policy::stateless_server(0));
679 msgr
->set_policy(entity_name_t::TYPE_MON
,
680 Messenger::Policy::lossless_peer_reuse(
682 CEPH_FEATURE_PGID64
|
683 CEPH_FEATURE_MON_SINGLE_PAXOS
));
684 msgr
->set_policy(entity_name_t::TYPE_OSD
,
685 Messenger::Policy::stateless_server(
686 CEPH_FEATURE_PGID64
|
687 CEPH_FEATURE_OSDENC
));
688 msgr
->set_policy(entity_name_t::TYPE_CLIENT
,
689 Messenger::Policy::stateless_server(0));
690 msgr
->set_policy(entity_name_t::TYPE_MDS
,
691 Messenger::Policy::stateless_server(0));
693 // throttle client traffic
694 Throttle
*client_throttler
= new Throttle(g_ceph_context
, "mon_client_bytes",
695 g_conf
->mon_client_bytes
);
696 msgr
->set_policy_throttlers(entity_name_t::TYPE_CLIENT
,
697 client_throttler
, NULL
);
699 // throttle daemon traffic
700 // NOTE: actual usage on the leader may multiply by the number of
701 // monitors if they forward large update messages from daemons.
702 Throttle
*daemon_throttler
= new Throttle(g_ceph_context
, "mon_daemon_bytes",
703 g_conf
->mon_daemon_bytes
);
704 msgr
->set_policy_throttlers(entity_name_t::TYPE_OSD
, daemon_throttler
,
706 msgr
->set_policy_throttlers(entity_name_t::TYPE_MDS
, daemon_throttler
,
709 dout(0) << "starting " << g_conf
->name
<< " rank " << rank
711 << " mon_data " << g_conf
->mon_data
712 << " fsid " << monmap
.get_fsid()
715 err
= msgr
->bind(ipaddr
);
717 derr
<< "unable to bind monitor to " << ipaddr
<< dendl
;
721 Messenger
*mgr_msgr
= Messenger::create(g_ceph_context
, public_msgr_type
,
722 entity_name_t::MON(rank
), "mon-mgrc",
725 derr
<< "unable to create mgr_msgr" << dendl
;
729 cout
<< "starting " << g_conf
->name
<< " rank " << rank
731 << " mon_data " << g_conf
->mon_data
732 << " fsid " << monmap
.get_fsid()
736 mon
= new Monitor(g_ceph_context
, g_conf
->name
.get_id(), store
,
737 msgr
, mgr_msgr
, &monmap
);
740 derr
<< "flagging a forced sync ..." << dendl
;
742 mon
->sync_force(NULL
, oss
);
744 derr
<< oss
.str() << dendl
;
747 err
= mon
->preinit();
749 derr
<< "failed to initialize" << dendl
;
753 if (compact
|| g_conf
->mon_compact_on_start
) {
754 derr
<< "compacting monitor store ..." << dendl
;
755 mon
->store
->compact();
756 derr
<< "done compacting" << dendl
;
759 if (g_conf
->daemonize
) {
760 global_init_postfork_finish(g_ceph_context
);
769 // set up signal handlers, now that we've daemonized/forked.
770 init_async_signal_handler();
771 register_async_signal_handler(SIGHUP
, sighup_handler
);
772 register_async_signal_handler_oneshot(SIGINT
, handle_mon_signal
);
773 register_async_signal_handler_oneshot(SIGTERM
, handle_mon_signal
);
775 if (g_conf
->inject_early_sigterm
)
776 kill(getpid(), SIGTERM
);
783 unregister_async_signal_handler(SIGHUP
, sighup_handler
);
784 unregister_async_signal_handler(SIGINT
, handle_mon_signal
);
785 unregister_async_signal_handler(SIGTERM
, handle_mon_signal
);
786 shutdown_async_signal_handler();
792 delete client_throttler
;
793 delete daemon_throttler
;
795 // cd on exit, so that gmon.out (if any) goes into a separate directory for each node.
797 snprintf(s
, sizeof(s
), "gmon/%d", getpid());
798 if ((mkdir(s
, 0755) == 0) && (chdir(s
) == 0)) {
799 dout(0) << "ceph-mon: gmon.out should be in " << s
<< dendl
;
802 prefork
.signal_exit(0);