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"
44 const char *debuglevel;
45 const char *transport;
46 const char *myaddress;
48 const char *recovery_lock;
50 const char *db_dir_persistent;
51 const char *db_dir_state;
53 int start_as_disabled;
59 .debuglevel = "NOTICE",
61 .logging = "file:" LOGDIR "/log.ctdb",
62 .db_dir = CTDB_VARDIR "/volatile",
63 .db_dir_persistent = CTDB_VARDIR "/persistent",
64 .db_dir_state = CTDB_VARDIR "/state",
65 .script_log_level = DEBUG_ERR,
72 called by the transport layer when a packet comes in
74 static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
76 struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
78 CTDB_INCREMENT_STAT(ctdb, node_packets_recv);
80 /* up the counter for this source node, so we know its alive */
81 if (ctdb_validate_pnn(ctdb, hdr->srcnode)) {
82 /* as a special case, redirected calls don't increment the rx_cnt */
83 if (hdr->operation != CTDB_REQ_CALL ||
84 ((struct ctdb_req_call_old *)hdr)->hopcount == 0) {
85 ctdb->nodes[hdr->srcnode]->rx_cnt++;
89 ctdb_input_pkt(ctdb, hdr);
92 static const struct ctdb_upcalls ctdb_upcalls = {
93 .recv_pkt = ctdb_recv_pkt,
94 .node_dead = ctdb_node_dead,
95 .node_connected = ctdb_node_connected
98 static struct ctdb_context *ctdb_init(struct tevent_context *ev)
101 struct ctdb_context *ctdb;
103 ctdb = talloc_zero(ev, struct ctdb_context);
105 DBG_ERR("Memory error\n");
110 /* Wrap early to exercise code. */
111 ret = reqid_init(ctdb, INT_MAX-200, &ctdb->idr);
113 D_ERR("reqid_init failed (%s)\n", strerror(ret));
118 ret = srvid_init(ctdb, &ctdb->srv);
120 D_ERR("srvid_init failed (%s)\n", strerror(ret));
125 ret = ctdb_set_socketname(ctdb, CTDB_SOCKET);
127 DBG_ERR("ctdb_set_socketname failed.\n");
132 gettimeofday(&ctdb->ctdbd_start_time, NULL);
134 gettimeofday(&ctdb->last_recovery_started, NULL);
135 gettimeofday(&ctdb->last_recovery_finished, NULL);
137 ctdb->recovery_mode = CTDB_RECOVERY_NORMAL;
138 ctdb->recovery_master = (uint32_t)-1;
140 ctdb->upcalls = &ctdb_upcalls;
142 ctdb->statistics.statistics_start_time = timeval_current();
144 ctdb->capabilities = CTDB_CAP_DEFAULT;
147 * Initialise this node's PNN to the unknown value. This will
148 * be set to the correct value by either ctdb_add_node() as
149 * part of loading the nodes file or by
150 * ctdb_tcp_listen_automatic() when the transport is
151 * initialised. At some point we should de-optimise this and
152 * pull it out into ctdb_start_daemon() so it is done clearly
153 * and only in one place.
155 ctdb->pnn = CTDB_UNKNOWN_PNN;
157 ctdb->do_checkpublicip = true;
166 int main(int argc, const char *argv[])
168 struct ctdb_context *ctdb = NULL;
170 const char *ctdb_socket;
172 struct poptOption popt_options[] = {
174 { "debug", 'd', POPT_ARG_STRING, &options.debuglevel, 0, "debug level", NULL },
175 { "interactive", 'i', POPT_ARG_NONE, &interactive, 0, "don't fork", NULL },
176 { "logging", 0, POPT_ARG_STRING, &options.logging, 0, "logging method to be used", NULL },
177 { "listen", 0, POPT_ARG_STRING, &options.myaddress, 0, "address to listen on", "address" },
178 { "transport", 0, POPT_ARG_STRING, &options.transport, 0, "protocol transport", NULL },
179 { "dbdir", 0, POPT_ARG_STRING, &options.db_dir, 0, "directory for the tdb files", NULL },
180 { "dbdir-persistent", 0, POPT_ARG_STRING, &options.db_dir_persistent, 0, "directory for persistent tdb files", NULL },
181 { "dbdir-state", 0, POPT_ARG_STRING, &options.db_dir_state, 0, "directory for internal state tdb files", NULL },
182 { "reclock", 0, POPT_ARG_STRING, &options.recovery_lock, 0, "recovery lock", "lock" },
183 { "nosetsched", 0, POPT_ARG_NONE, &options.nosetsched, 0, "disable setscheduler SCHED_FIFO call, use mmap for tdbs", NULL },
184 { "start-as-disabled", 0, POPT_ARG_NONE, &options.start_as_disabled, 0, "Node starts in disabled state", NULL },
185 { "start-as-stopped", 0, POPT_ARG_NONE, &options.start_as_stopped, 0, "Node starts in stopped state", NULL },
186 { "no-lmaster", 0, POPT_ARG_NONE, &options.no_lmaster, 0, "disable lmaster role on this node", NULL },
187 { "no-recmaster", 0, POPT_ARG_NONE, &options.no_recmaster, 0, "disable recmaster role on this node", NULL },
188 { "script-log-level", 0, POPT_ARG_INT, &options.script_log_level, 0, "log level of event script output", NULL },
192 const char **extra_argv;
194 struct tevent_context *ev;
195 const char *ctdb_base;
202 talloc_enable_null_tracking();
206 ev = tevent_context_init(NULL);
208 fprintf(stderr, "tevent_context_init() failed\n");
211 tevent_loop_allow_nesting(ev);
213 ctdb = ctdb_init(ev);
215 fprintf(stderr, "Failed to init ctdb\n");
219 /* Default value for CTDB_BASE - don't override */
220 setenv("CTDB_BASE", CTDB_ETCDIR, 0);
221 ctdb_base = getenv("CTDB_BASE");
222 if (ctdb_base == NULL) {
223 D_ERR("CTDB_BASE not set\n");
228 * Command-line option handling
231 pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
233 while ((opt = poptGetNextOpt(pc)) != -1) {
236 fprintf(stderr, "Invalid option %s: %s\n",
237 poptBadOption(pc, 0), poptStrerror(opt));
242 /* If there are extra arguments then exit with usage message */
243 extra_argv = poptGetArgs(pc);
247 poptPrintHelp(pc, stdout, 0);
253 * Logging setup/options
256 /* Log to stderr when running as interactive */
258 options.logging = "file:";
261 if (strcmp(options.logging, "syslog") != 0) {
262 /* This can help when CTDB logging is misconfigured */
263 syslog(LOG_DAEMON|LOG_NOTICE,
264 "CTDB logging to location %s",
268 /* Initialize logging and set the debug level */
269 if (!ctdb_logging_init(ctdb, options.logging, options.debuglevel)) {
272 setenv("CTDB_LOGGING", options.logging, 1);
273 setenv("CTDB_DEBUGLEVEL", debug_level_to_string(DEBUGLEVEL), 1);
275 script_log_level = options.script_log_level;
277 D_NOTICE("CTDB starting on node\n");
280 * Cluster setup/options
283 ret = ctdb_set_transport(ctdb, options.transport);
285 D_ERR("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
289 if (options.recovery_lock == NULL) {
290 D_WARNING("Recovery lock not set\n");
292 ctdb->recovery_lock = options.recovery_lock;
294 /* tell ctdb what address to listen on */
295 if (options.myaddress) {
296 ret = ctdb_set_address(ctdb, options.myaddress);
298 D_ERR("ctdb_set_address failed - %s\n",
304 /* tell ctdb what nodes are available */
305 ctdb->nodes_file = talloc_asprintf(ctdb, "%s/nodes", ctdb_base);
306 if (ctdb->nodes_file == NULL) {
307 DBG_ERR(" Out of memory\n");
310 ctdb_load_nodes_file(ctdb);
313 * Database setup/options
316 ctdb->db_directory = options.db_dir;
317 ctdb->db_directory_persistent = options.db_dir_persistent;
318 ctdb->db_directory_state = options.db_dir_state;
321 * Legacy setup/options
324 ctdb->start_as_disabled = options.start_as_disabled;
325 ctdb->start_as_stopped = options.start_as_stopped;
327 /* set ctdbd capabilities */
328 if (options.no_lmaster != 0) {
329 ctdb->capabilities &= ~CTDB_CAP_LMASTER;
331 if (options.no_recmaster != 0) {
332 ctdb->capabilities &= ~CTDB_CAP_RECMASTER;
335 ctdb->do_setsched = (options.nosetsched != 1);
338 * Miscellaneous setup
341 ctdb_tunables_set_defaults(ctdb);
343 ctdb->event_script_dir = talloc_asprintf(ctdb,
346 if (ctdb->event_script_dir == NULL) {
347 DBG_ERR("Out of memory\n");
351 ctdb->notification_script = talloc_asprintf(ctdb,
354 if (ctdb->notification_script == NULL) {
355 D_ERR("Unable to set notification script\n");
360 * Testing and debug options
363 /* Environment variable overrides default */
364 ctdbd_pidfile = getenv("CTDB_PIDFILE");
365 if (ctdbd_pidfile == NULL) {
366 ctdbd_pidfile = CTDB_RUNDIR "/ctdbd.pid";
369 /* Environment variable overrides default */
370 ctdb_socket = getenv("CTDB_SOCKET");
371 if (ctdb_socket == NULL) {
372 ctdb_socket = CTDB_SOCKET;
374 ret = ctdb_set_socketname(ctdb, ctdb_socket);
376 D_ERR("ctdb_set_socketname() failed\n");
380 t = getenv("CTDB_TEST_MODE");
382 ctdb->do_setsched = false;
383 ctdb->do_checkpublicip = false;
387 /* start the protocol running (as a child) */
388 return ctdb_start_daemon(ctdb, interactive?false:true);