4 Copyright (C) Andrew Tridgell 2006
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "system/filesys.h"
22 #include "system/time.h"
23 #include "system/wait.h"
24 #include "system/network.h"
25 #include "system/syslog.h"
29 /* Allow use of deprecated function tevent_loop_allow_nesting() */
30 #define TEVENT_DEPRECATED
33 #include "lib/util/debug.h"
34 #include "lib/util/samba_util.h"
36 #include "ctdb_private.h"
38 #include "common/reqid.h"
39 #include "common/system.h"
40 #include "common/common.h"
41 #include "common/logging.h"
42 #include "common/logging_conf.h"
44 #include "ctdb_config.h"
47 const char *debuglevel;
48 const char *transport;
49 const char *myaddress;
51 const char *recovery_lock;
53 const char *db_dir_persistent;
54 const char *db_dir_state;
56 int start_as_disabled;
62 .debuglevel = "NOTICE",
64 .logging = "file:" LOGDIR "/log.ctdb",
65 .db_dir = CTDB_VARDIR "/volatile",
66 .db_dir_persistent = CTDB_VARDIR "/persistent",
67 .db_dir_state = CTDB_VARDIR "/state",
68 .script_log_level = DEBUG_ERR,
75 called by the transport layer when a packet comes in
77 static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
79 struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
81 CTDB_INCREMENT_STAT(ctdb, node_packets_recv);
83 /* up the counter for this source node, so we know its alive */
84 if (ctdb_validate_pnn(ctdb, hdr->srcnode)) {
85 /* as a special case, redirected calls don't increment the rx_cnt */
86 if (hdr->operation != CTDB_REQ_CALL ||
87 ((struct ctdb_req_call_old *)hdr)->hopcount == 0) {
88 ctdb->nodes[hdr->srcnode]->rx_cnt++;
92 ctdb_input_pkt(ctdb, hdr);
95 static const struct ctdb_upcalls ctdb_upcalls = {
96 .recv_pkt = ctdb_recv_pkt,
97 .node_dead = ctdb_node_dead,
98 .node_connected = ctdb_node_connected
101 static struct ctdb_context *ctdb_init(struct tevent_context *ev)
104 struct ctdb_context *ctdb;
106 ctdb = talloc_zero(ev, struct ctdb_context);
108 DBG_ERR("Memory error\n");
113 /* Wrap early to exercise code. */
114 ret = reqid_init(ctdb, INT_MAX-200, &ctdb->idr);
116 D_ERR("reqid_init failed (%s)\n", strerror(ret));
121 ret = srvid_init(ctdb, &ctdb->srv);
123 D_ERR("srvid_init failed (%s)\n", strerror(ret));
128 ret = ctdb_set_socketname(ctdb, CTDB_SOCKET);
130 DBG_ERR("ctdb_set_socketname failed.\n");
135 gettimeofday(&ctdb->ctdbd_start_time, NULL);
137 gettimeofday(&ctdb->last_recovery_started, NULL);
138 gettimeofday(&ctdb->last_recovery_finished, NULL);
140 ctdb->recovery_mode = CTDB_RECOVERY_NORMAL;
141 ctdb->recovery_master = (uint32_t)-1;
143 ctdb->upcalls = &ctdb_upcalls;
145 ctdb->statistics.statistics_start_time = timeval_current();
147 ctdb->capabilities = CTDB_CAP_DEFAULT;
150 * Initialise this node's PNN to the unknown value. This will
151 * be set to the correct value by either ctdb_add_node() as
152 * part of loading the nodes file or by
153 * ctdb_tcp_listen_automatic() when the transport is
154 * initialised. At some point we should de-optimise this and
155 * pull it out into ctdb_start_daemon() so it is done clearly
156 * and only in one place.
158 ctdb->pnn = CTDB_UNKNOWN_PNN;
160 ctdb->do_checkpublicip = true;
169 int main(int argc, const char *argv[])
171 struct ctdb_context *ctdb = NULL;
173 const char *ctdb_socket;
175 struct poptOption popt_options[] = {
177 { "debug", 'd', POPT_ARG_STRING, &options.debuglevel, 0, "debug level", NULL },
178 { "interactive", 'i', POPT_ARG_NONE, &interactive, 0, "don't fork", NULL },
179 { "logging", 0, POPT_ARG_STRING, &options.logging, 0, "logging method to be used", NULL },
180 { "listen", 0, POPT_ARG_STRING, &options.myaddress, 0, "address to listen on", "address" },
181 { "transport", 0, POPT_ARG_STRING, &options.transport, 0, "protocol transport", NULL },
182 { "dbdir", 0, POPT_ARG_STRING, &options.db_dir, 0, "directory for the tdb files", NULL },
183 { "dbdir-persistent", 0, POPT_ARG_STRING, &options.db_dir_persistent, 0, "directory for persistent tdb files", NULL },
184 { "dbdir-state", 0, POPT_ARG_STRING, &options.db_dir_state, 0, "directory for internal state tdb files", NULL },
185 { "reclock", 0, POPT_ARG_STRING, &options.recovery_lock, 0, "recovery lock", "lock" },
186 { "nosetsched", 0, POPT_ARG_NONE, &options.nosetsched, 0, "disable setscheduler SCHED_FIFO call, use mmap for tdbs", NULL },
187 { "start-as-disabled", 0, POPT_ARG_NONE, &options.start_as_disabled, 0, "Node starts in disabled state", NULL },
188 { "start-as-stopped", 0, POPT_ARG_NONE, &options.start_as_stopped, 0, "Node starts in stopped state", NULL },
189 { "no-lmaster", 0, POPT_ARG_NONE, &options.no_lmaster, 0, "disable lmaster role on this node", NULL },
190 { "no-recmaster", 0, POPT_ARG_NONE, &options.no_recmaster, 0, "disable recmaster role on this node", NULL },
191 { "script-log-level", 0, POPT_ARG_INT, &options.script_log_level, 0, "log level of event script output", NULL },
195 const char **extra_argv;
197 struct tevent_context *ev;
198 const char *ctdb_base;
199 struct conf_context *conf;
200 const char *logging_location;
208 talloc_enable_null_tracking();
212 ev = tevent_context_init(NULL);
214 fprintf(stderr, "tevent_context_init() failed\n");
217 tevent_loop_allow_nesting(ev);
219 ctdb = ctdb_init(ev);
221 fprintf(stderr, "Failed to init ctdb\n");
225 /* Default value for CTDB_BASE - don't override */
226 setenv("CTDB_BASE", CTDB_ETCDIR, 0);
227 ctdb_base = getenv("CTDB_BASE");
228 if (ctdb_base == NULL) {
229 D_ERR("CTDB_BASE not set\n");
234 * Command-line option handling
237 pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
239 while ((opt = poptGetNextOpt(pc)) != -1) {
242 fprintf(stderr, "Invalid option %s: %s\n",
243 poptBadOption(pc, 0), poptStrerror(opt));
248 /* If there are extra arguments then exit with usage message */
249 extra_argv = poptGetArgs(pc);
253 poptPrintHelp(pc, stdout, 0);
259 * Configuration file handling
262 ret = ctdbd_config_load(ctdb, &conf);
264 fprintf(stderr, "Failed to setup config file handling\n");
269 * Logging setup/options
272 /* Log to stderr (ignoring configuration) when running as interactive */
274 logging_location = "file:";
276 logging_location = logging_conf_location(conf);
279 if (strcmp(logging_location, "syslog") != 0) {
280 /* This can help when CTDB logging is misconfigured */
281 syslog(LOG_DAEMON|LOG_NOTICE,
282 "CTDB logging to location %s",
286 /* Initialize logging and set the debug level */
287 ok = ctdb_logging_init(ctdb,
289 logging_conf_log_level(conf));
293 setenv("CTDB_LOGGING", logging_location, 1);
294 setenv("CTDB_DEBUGLEVEL", debug_level_to_string(DEBUGLEVEL), 1);
296 script_log_level = debug_level_from_string(
297 ctdb_config.script_log_level);
299 D_NOTICE("CTDB starting on node\n");
302 * Cluster setup/options
305 ret = ctdb_set_transport(ctdb, ctdb_config.transport);
307 D_ERR("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
311 if (ctdb_config.recovery_lock == NULL) {
312 D_WARNING("Recovery lock not set\n");
314 ctdb->recovery_lock = ctdb_config.recovery_lock;
316 /* tell ctdb what address to listen on */
317 if (ctdb_config.node_address) {
318 ret = ctdb_set_address(ctdb, ctdb_config.node_address);
320 D_ERR("ctdb_set_address failed - %s\n",
326 /* tell ctdb what nodes are available */
327 ctdb->nodes_file = talloc_asprintf(ctdb, "%s/nodes", ctdb_base);
328 if (ctdb->nodes_file == NULL) {
329 DBG_ERR(" Out of memory\n");
332 ctdb_load_nodes_file(ctdb);
335 * Database setup/options
338 ctdb->db_directory = ctdb_config.dbdir_volatile;
339 ctdb->db_directory_persistent = ctdb_config.dbdir_persistent;
340 ctdb->db_directory_state = ctdb_config.dbdir_state;
342 if (ctdb_config.lock_debug_script != NULL) {
343 ret = setenv("CTDB_DEBUG_LOCKS",
344 ctdb_config.lock_debug_script,
347 D_ERR("Failed to set up lock debugging (%s)\n",
354 * Event setup/options
356 if (ctdb_config.event_debug_script != NULL) {
357 ret = setenv("CTDB_DEBUG_HUNG_SCRIPT",
358 ctdb_config.event_debug_script,
361 D_ERR("Failed to set up event script debugging (%s)\n",
368 * Legacy setup/options
371 ctdb->start_as_disabled = (int)ctdb_config.start_as_disabled;
372 ctdb->start_as_stopped = (int)ctdb_config.start_as_stopped;
374 /* set ctdbd capabilities */
375 if (!ctdb_config.lmaster_capability) {
376 ctdb->capabilities &= ~CTDB_CAP_LMASTER;
378 if (!ctdb_config.recmaster_capability) {
379 ctdb->capabilities &= ~CTDB_CAP_RECMASTER;
382 ctdb->do_setsched = !ctdb_config.no_realtime;
385 * Miscellaneous setup
388 ctdb_tunables_set_defaults(ctdb);
390 ctdb->event_script_dir = talloc_asprintf(ctdb,
393 if (ctdb->event_script_dir == NULL) {
394 DBG_ERR("Out of memory\n");
398 ctdb->notification_script = talloc_asprintf(ctdb,
401 if (ctdb->notification_script == NULL) {
402 D_ERR("Unable to set notification script\n");
407 * Testing and debug options
410 /* Environment variable overrides default */
411 ctdbd_pidfile = getenv("CTDB_PIDFILE");
412 if (ctdbd_pidfile == NULL) {
413 ctdbd_pidfile = CTDB_RUNDIR "/ctdbd.pid";
416 /* Environment variable overrides default */
417 ctdb_socket = getenv("CTDB_SOCKET");
418 if (ctdb_socket == NULL) {
419 ctdb_socket = CTDB_SOCKET;
421 ret = ctdb_set_socketname(ctdb, ctdb_socket);
423 D_ERR("ctdb_set_socketname() failed\n");
427 t = getenv("CTDB_TEST_MODE");
429 ctdb->do_setsched = false;
430 ctdb->do_checkpublicip = false;
434 /* start the protocol running (as a child) */
435 return ctdb_start_daemon(ctdb, interactive?false:true);