This source file includes following definitions.
- PCMK__OUTPUT_ARGS
- PCMK__OUTPUT_ARGS
- pid_cb
- standby_cb
- pcmk_ignore
- pcmk_sigquit
- mcp_chown
- create_pcmk_dirs
- remove_core_file_limit
- pacemakerd_event_cb
- build_arg_context
- main
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10 #include <crm_internal.h>
11 #include "pacemakerd.h"
12
13 #include <pwd.h>
14 #include <errno.h>
15 #include <unistd.h>
16 #include <stdio.h>
17 #include <stdbool.h>
18 #include <sys/stat.h>
19 #include <sys/types.h>
20 #include <sys/time.h>
21 #include <sys/resource.h>
22
23 #include <crm/crm.h>
24 #include <crm/msg_xml.h>
25 #include <crm/common/mainloop.h>
26 #include <crm/common/cmdline_internal.h>
27 #include <crm/common/ipc_pacemakerd.h>
28 #include <crm/common/output_internal.h>
29 #include <crm/cluster/internal.h>
30 #include <crm/cluster.h>
31
32 #define SUMMARY "pacemakerd - primary Pacemaker daemon that launches and monitors all subsidiary Pacemaker daemons"
33
34 struct {
35 gboolean features;
36 gboolean foreground;
37 gboolean shutdown;
38 gboolean standby;
39 } options;
40
41 static pcmk__output_t *out = NULL;
42
43 static pcmk__supported_format_t formats[] = {
44 PCMK__SUPPORTED_FORMAT_NONE,
45 PCMK__SUPPORTED_FORMAT_TEXT,
46 PCMK__SUPPORTED_FORMAT_XML,
47 { NULL, NULL, NULL }
48 };
49
50 PCMK__OUTPUT_ARGS("features")
51 static int
52 pacemakerd_features(pcmk__output_t *out, va_list args) {
53 out->info(out, "Pacemaker %s (Build: %s)\n Supporting v%s: %s", PACEMAKER_VERSION,
54 BUILD_VERSION, CRM_FEATURE_SET, CRM_FEATURES);
55 return pcmk_rc_ok;
56 }
57
58 PCMK__OUTPUT_ARGS("features")
59 static int
60 pacemakerd_features_xml(pcmk__output_t *out, va_list args) {
61 gchar **feature_list = g_strsplit(CRM_FEATURES, " ", 0);
62
63 pcmk__output_xml_create_parent(out, "pacemakerd",
64 "version", PACEMAKER_VERSION,
65 "build", BUILD_VERSION,
66 "feature_set", CRM_FEATURE_SET,
67 NULL);
68 out->begin_list(out, NULL, NULL, "features");
69
70 for (char **s = feature_list; *s != NULL; s++) {
71 pcmk__output_create_xml_text_node(out, "feature", *s);
72 }
73
74 out->end_list(out);
75
76 g_strfreev(feature_list);
77 return pcmk_rc_ok;
78 }
79
80 static pcmk__message_entry_t fmt_functions[] = {
81 { "features", "default", pacemakerd_features },
82 { "features", "xml", pacemakerd_features_xml },
83
84 { NULL, NULL, NULL }
85 };
86
87 static gboolean
88 pid_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
89 return TRUE;
90 }
91
92 static gboolean
93 standby_cb(const gchar *option_name, const gchar *optarg, gpointer data, GError **err) {
94 options.standby = TRUE;
95 pcmk__set_env_option("node_start_state", "standby");
96 return TRUE;
97 }
98
99 static GOptionEntry entries[] = {
100 { "features", 'F', 0, G_OPTION_ARG_NONE, &options.features,
101 "Display full version and list of features Pacemaker was built with",
102 NULL },
103 { "foreground", 'f', 0, G_OPTION_ARG_NONE, &options.foreground,
104 "(Ignored) Pacemaker always runs in the foreground",
105 NULL },
106 { "pid-file", 'p', 0, G_OPTION_ARG_CALLBACK, pid_cb,
107 "(Ignored) Daemon pid file location",
108 "FILE" },
109 { "shutdown", 'S', 0, G_OPTION_ARG_NONE, &options.shutdown,
110 "Instruct Pacemaker to shutdown on this machine",
111 NULL },
112 { "standby", 's', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, standby_cb,
113 "Start node in standby state",
114 NULL },
115
116 { NULL }
117 };
118
119 static void
120 pcmk_ignore(int nsig)
121 {
122 crm_info("Ignoring signal %s (%d)", strsignal(nsig), nsig);
123 }
124
125 static void
126 pcmk_sigquit(int nsig)
127 {
128 pcmk__panic(__func__);
129 }
130
131 static void
132 mcp_chown(const char *path, uid_t uid, gid_t gid)
133 {
134 int rc = chown(path, uid, gid);
135
136 if (rc < 0) {
137 crm_warn("Cannot change the ownership of %s to user %s and gid %d: %s",
138 path, CRM_DAEMON_USER, gid, pcmk_rc_str(errno));
139 }
140 }
141
142 static void
143 create_pcmk_dirs(void)
144 {
145 uid_t pcmk_uid = 0;
146 gid_t pcmk_gid = 0;
147
148 const char *dirs[] = {
149 CRM_PACEMAKER_DIR,
150 CRM_CORE_DIR,
151 CRM_BLACKBOX_DIR,
152 PE_STATE_DIR,
153 CRM_CONFIG_DIR,
154
155 NULL
156 };
157
158 if (pcmk_daemon_user(&pcmk_uid, &pcmk_gid) < 0) {
159 crm_err("Cluster user %s does not exist, aborting Pacemaker startup",
160 CRM_DAEMON_USER);
161 crm_exit(CRM_EX_NOUSER);
162 }
163
164
165 if ((mkdir(CRM_STATE_DIR, 0750) < 0) && (errno != EEXIST)) {
166 crm_warn("Could not create directory " CRM_STATE_DIR ": %s",
167 pcmk_rc_str(errno));
168 } else {
169 mcp_chown(CRM_STATE_DIR, pcmk_uid, pcmk_gid);
170 }
171
172 for (int i = 0; dirs[i] != NULL; ++i) {
173 int rc = pcmk__build_path(dirs[i], 0750);
174
175 if (rc != pcmk_rc_ok) {
176 crm_warn("Could not create directory %s: %s",
177 dirs[i], pcmk_rc_str(rc));
178 } else {
179 mcp_chown(dirs[i], pcmk_uid, pcmk_gid);
180 }
181 }
182 }
183
184 static void
185 remove_core_file_limit(void)
186 {
187 struct rlimit cores;
188 int rc = getrlimit(RLIMIT_CORE, &cores);
189
190 if (rc < 0) {
191 crm_warn("Cannot determine current maximum core file size: %s",
192 strerror(errno));
193 return;
194 }
195
196 if ((cores.rlim_max == 0) && (geteuid() == 0)) {
197 cores.rlim_max = RLIM_INFINITY;
198 } else {
199 crm_info("Maximum core file size is %llu bytes",
200 (unsigned long long) cores.rlim_max);
201 }
202 cores.rlim_cur = cores.rlim_max;
203
204 rc = setrlimit(RLIMIT_CORE, &cores);
205 if (rc < 0) {
206 crm_warn("Cannot raise system limit on core file size "
207 "(consider doing so manually)");
208 }
209 }
210
211 static void
212 pacemakerd_event_cb(pcmk_ipc_api_t *pacemakerd_api,
213 enum pcmk_ipc_event event_type, crm_exit_t status,
214 void *event_data, void *user_data)
215 {
216 pcmk_pacemakerd_api_reply_t *reply = event_data;
217
218 switch (event_type) {
219 case pcmk_ipc_event_reply:
220 break;
221
222 default:
223 return;
224 }
225
226 if (status != CRM_EX_OK) {
227 out->err(out, "Bad reply from pacemakerd: %s", crm_exit_str(status));
228 return;
229 }
230
231 if (reply->reply_type != pcmk_pacemakerd_reply_shutdown) {
232 out->err(out, "Unknown reply type %d from pacemakerd",
233 reply->reply_type);
234 }
235 }
236
237 static GOptionContext *
238 build_arg_context(pcmk__common_args_t *args, GOptionGroup **group) {
239 GOptionContext *context = NULL;
240
241 context = pcmk__build_arg_context(args, "text (default), xml", group, NULL);
242 pcmk__add_main_args(context, entries);
243 return context;
244 }
245
246 int
247 main(int argc, char **argv)
248 {
249 int rc = pcmk_rc_ok;
250 crm_exit_t exit_code = CRM_EX_OK;
251
252 GError *error = NULL;
253
254 GOptionGroup *output_group = NULL;
255 pcmk__common_args_t *args = pcmk__new_common_args(SUMMARY);
256 gchar **processed_args = pcmk__cmdline_preproc(argv, "p");
257 GOptionContext *context = build_arg_context(args, &output_group);
258
259 bool old_instance_connected = false;
260
261 pcmk_ipc_api_t *old_instance = NULL;
262 qb_ipcs_service_t *ipcs = NULL;
263
264 subdaemon_check_progress = time(NULL);
265
266 setenv("LC_ALL", "C", 1);
267
268 crm_log_preinit(NULL, argc, argv);
269 mainloop_add_signal(SIGHUP, pcmk_ignore);
270 mainloop_add_signal(SIGQUIT, pcmk_sigquit);
271
272 pcmk__register_formats(output_group, formats);
273 if (!g_option_context_parse_strv(context, &processed_args, &error)) {
274 exit_code = CRM_EX_USAGE;
275 goto done;
276 }
277
278 rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
279 if ((rc != pcmk_rc_ok) || (out == NULL)) {
280 exit_code = CRM_EX_ERROR;
281 g_set_error(&error, PCMK__EXITC_ERROR, exit_code, "Error creating output format %s: %s",
282 args->output_ty, pcmk_rc_str(rc));
283 goto done;
284 }
285
286 pcmk__force_args(context, &error, "%s --xml-simple-list", g_get_prgname());
287
288 pcmk__register_messages(out, fmt_functions);
289
290 if (options.features) {
291 out->message(out, "features");
292 exit_code = CRM_EX_OK;
293 goto done;
294 }
295
296 if (args->version) {
297 out->version(out, false);
298 goto done;
299 }
300
301 pcmk__set_env_option("mcp", "true");
302
303 if (options.shutdown) {
304 pcmk__cli_init_logging("pacemakerd", args->verbosity);
305 } else {
306 crm_log_init(NULL, LOG_INFO, TRUE, FALSE, argc, argv, FALSE);
307 }
308
309 crm_debug("Checking for existing Pacemaker instance");
310
311 rc = pcmk_new_ipc_api(&old_instance, pcmk_ipc_pacemakerd);
312 if (old_instance == NULL) {
313 out->err(out, "Could not check for existing pacemakerd: %s", pcmk_rc_str(rc));
314 exit_code = pcmk_rc2exitc(rc);
315 goto done;
316 }
317
318 pcmk_register_ipc_callback(old_instance, pacemakerd_event_cb, NULL);
319 rc = pcmk_connect_ipc(old_instance, pcmk_ipc_dispatch_sync);
320 old_instance_connected = pcmk_ipc_is_connected(old_instance);
321
322 if (options.shutdown) {
323 if (old_instance_connected) {
324 rc = pcmk_pacemakerd_api_shutdown(old_instance, crm_system_name);
325 pcmk_dispatch_ipc(old_instance);
326 pcmk_free_ipc_api(old_instance);
327 exit_code = pcmk_rc2exitc(rc);
328 goto done;
329 } else {
330 out->err(out, "Could not request shutdown "
331 "of existing Pacemaker instance: %s", pcmk_rc_str(rc));
332 pcmk_free_ipc_api(old_instance);
333 exit_code = CRM_EX_DISCONNECT;
334 goto done;
335 }
336
337 } else if (old_instance_connected) {
338 pcmk_free_ipc_api(old_instance);
339 crm_err("Aborting start-up because active Pacemaker instance found");
340 exit_code = CRM_EX_FATAL;
341 goto done;
342 }
343
344 pcmk_free_ipc_api(old_instance);
345
346
347 if (out != NULL) {
348 out->finish(out, exit_code, true, NULL);
349 pcmk__output_free(out);
350 out = NULL;
351 }
352
353 #ifdef SUPPORT_COROSYNC
354 if (mcp_read_config() == FALSE) {
355 crm_exit(CRM_EX_UNAVAILABLE);
356 }
357 #endif
358
359
360 {
361 const char *facility = pcmk__env_option(PCMK__ENV_LOGFACILITY);
362
363 if (!pcmk__str_eq(facility, PCMK__VALUE_NONE,
364 pcmk__str_casei|pcmk__str_null_matches)) {
365 setenv("HA_LOGFACILITY", facility, 1);
366 }
367 }
368
369 crm_notice("Starting Pacemaker %s "CRM_XS" build=%s features:%s",
370 PACEMAKER_VERSION, BUILD_VERSION, CRM_FEATURES);
371 mainloop = g_main_loop_new(NULL, FALSE);
372
373 remove_core_file_limit();
374 create_pcmk_dirs();
375 pcmk__serve_pacemakerd_ipc(&ipcs, &mcp_ipc_callbacks);
376
377 #ifdef SUPPORT_COROSYNC
378
379 if (!cluster_connect_cfg()) {
380 exit_code = CRM_EX_PROTOCOL;
381 goto done;
382 }
383 #endif
384
385 if (pcmk__locate_sbd() > 0) {
386 setenv("PCMK_watchdog", "true", 1);
387 running_with_sbd = TRUE;
388 } else {
389 setenv("PCMK_watchdog", "false", 1);
390 }
391
392 switch (find_and_track_existing_processes()) {
393 case pcmk_rc_ok:
394 break;
395 case pcmk_rc_ipc_unauthorized:
396 exit_code = CRM_EX_CANTCREAT;
397 goto done;
398 default:
399 exit_code = CRM_EX_FATAL;
400 goto done;
401 };
402
403 mainloop_add_signal(SIGTERM, pcmk_shutdown);
404 mainloop_add_signal(SIGINT, pcmk_shutdown);
405
406 if ((running_with_sbd) && pcmk__get_sbd_sync_resource_startup()) {
407 crm_notice("Waiting for startup-trigger from SBD.");
408 pacemakerd_state = XML_PING_ATTR_PACEMAKERDSTATE_WAITPING;
409 startup_trigger = mainloop_add_trigger(G_PRIORITY_HIGH, init_children_processes, NULL);
410 } else {
411 if (running_with_sbd) {
412 crm_warn("Enabling SBD_SYNC_RESOURCE_STARTUP would (if supported "
413 "by your SBD version) improve reliability of "
414 "interworking between SBD & pacemaker.");
415 }
416 pacemakerd_state = XML_PING_ATTR_PACEMAKERDSTATE_STARTINGDAEMONS;
417 init_children_processes(NULL);
418 }
419
420 crm_notice("Pacemaker daemon successfully started and accepting connections");
421 g_main_loop_run(mainloop);
422
423 if (ipcs) {
424 crm_trace("Closing IPC server");
425 mainloop_del_ipc_server(ipcs);
426 ipcs = NULL;
427 }
428
429 g_main_loop_unref(mainloop);
430 #ifdef SUPPORT_COROSYNC
431 cluster_disconnect_cfg();
432 #endif
433
434 done:
435 g_strfreev(processed_args);
436 pcmk__free_arg_context(context);
437
438 pcmk__output_and_clear_error(error, out);
439
440 if (out != NULL) {
441 out->finish(out, exit_code, true, NULL);
442 pcmk__output_free(out);
443 }
444 crm_exit(exit_code);
445 }
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