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;
58 int max_persistent_check_errors;
60 .debuglevel = "NOTICE",
62 .logging = "file:" LOGDIR "/log.ctdb",
63 .db_dir = CTDB_VARDIR "/volatile",
64 .db_dir_persistent = CTDB_VARDIR "/persistent",
65 .db_dir_state = CTDB_VARDIR "/state",
66 .script_log_level = DEBUG_ERR,
73 called by the transport layer when a packet comes in
75 static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
77 struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;
79 CTDB_INCREMENT_STAT(ctdb, node_packets_recv);
81 /* up the counter for this source node, so we know its alive */
82 if (ctdb_validate_pnn(ctdb, hdr->srcnode)) {
83 /* as a special case, redirected calls don't increment the rx_cnt */
84 if (hdr->operation != CTDB_REQ_CALL ||
85 ((struct ctdb_req_call_old *)hdr)->hopcount == 0) {
86 ctdb->nodes[hdr->srcnode]->rx_cnt++;
90 ctdb_input_pkt(ctdb, hdr);
93 static const struct ctdb_upcalls ctdb_upcalls = {
94 .recv_pkt = ctdb_recv_pkt,
95 .node_dead = ctdb_node_dead,
96 .node_connected = ctdb_node_connected
99 static struct ctdb_context *ctdb_init(struct tevent_context *ev)
102 struct ctdb_context *ctdb;
104 ctdb = talloc_zero(ev, struct ctdb_context);
106 DBG_ERR("Memory error\n");
111 /* Wrap early to exercise code. */
112 ret = reqid_init(ctdb, INT_MAX-200, &ctdb->idr);
114 D_ERR("reqid_init failed (%s)\n", strerror(ret));
119 ret = srvid_init(ctdb, &ctdb->srv);
121 D_ERR("srvid_init failed (%s)\n", strerror(ret));
126 ret = ctdb_set_socketname(ctdb, CTDB_SOCKET);
128 DBG_ERR("ctdb_set_socketname failed.\n");
133 gettimeofday(&ctdb->ctdbd_start_time, NULL);
135 gettimeofday(&ctdb->last_recovery_started, NULL);
136 gettimeofday(&ctdb->last_recovery_finished, NULL);
138 ctdb->recovery_mode = CTDB_RECOVERY_NORMAL;
139 ctdb->recovery_master = (uint32_t)-1;
141 ctdb->upcalls = &ctdb_upcalls;
143 ctdb->statistics.statistics_start_time = timeval_current();
145 ctdb->capabilities = CTDB_CAP_DEFAULT;
148 * Initialise this node's PNN to the unknown value. This will
149 * be set to the correct value by either ctdb_add_node() as
150 * part of loading the nodes file or by
151 * ctdb_tcp_listen_automatic() when the transport is
152 * initialised. At some point we should de-optimise this and
153 * pull it out into ctdb_start_daemon() so it is done clearly
154 * and only in one place.
156 ctdb->pnn = CTDB_UNKNOWN_PNN;
158 ctdb->do_checkpublicip = true;
167 int main(int argc, const char *argv[])
169 struct ctdb_context *ctdb = NULL;
171 const char *ctdb_socket;
173 struct poptOption popt_options[] = {
175 { "debug", 'd', POPT_ARG_STRING, &options.debuglevel, 0, "debug level", NULL },
176 { "interactive", 'i', POPT_ARG_NONE, &interactive, 0, "don't fork", NULL },
177 { "logging", 0, POPT_ARG_STRING, &options.logging, 0, "logging method to be used", NULL },
178 { "listen", 0, POPT_ARG_STRING, &options.myaddress, 0, "address to listen on", "address" },
179 { "transport", 0, POPT_ARG_STRING, &options.transport, 0, "protocol transport", NULL },
180 { "dbdir", 0, POPT_ARG_STRING, &options.db_dir, 0, "directory for the tdb files", NULL },
181 { "dbdir-persistent", 0, POPT_ARG_STRING, &options.db_dir_persistent, 0, "directory for persistent tdb files", NULL },
182 { "dbdir-state", 0, POPT_ARG_STRING, &options.db_dir_state, 0, "directory for internal state tdb files", NULL },
183 { "reclock", 0, POPT_ARG_STRING, &options.recovery_lock, 0, "recovery lock", "lock" },
184 { "nosetsched", 0, POPT_ARG_NONE, &options.nosetsched, 0, "disable setscheduler SCHED_FIFO call, use mmap for tdbs", NULL },
185 { "start-as-disabled", 0, POPT_ARG_NONE, &options.start_as_disabled, 0, "Node starts in disabled state", NULL },
186 { "start-as-stopped", 0, POPT_ARG_NONE, &options.start_as_stopped, 0, "Node starts in stopped state", NULL },
187 { "no-lmaster", 0, POPT_ARG_NONE, &options.no_lmaster, 0, "disable lmaster role on this node", NULL },
188 { "no-recmaster", 0, POPT_ARG_NONE, &options.no_recmaster, 0, "disable recmaster role on this node", NULL },
189 { "script-log-level", 0, POPT_ARG_INT, &options.script_log_level, 0, "log level of event script output", NULL },
190 { "max-persistent-check-errors", 0, POPT_ARG_INT,
191 &options.max_persistent_check_errors, 0,
192 "max allowed persistent check errors (default 0)", NULL },
196 const char **extra_argv;
198 struct tevent_context *ev;
199 const char *ctdb_base;
206 talloc_enable_null_tracking();
210 ev = tevent_context_init(NULL);
212 fprintf(stderr, "tevent_context_init() failed\n");
215 tevent_loop_allow_nesting(ev);
217 ctdb = ctdb_init(ev);
219 fprintf(stderr, "Failed to init ctdb\n");
223 /* Default value for CTDB_BASE - don't override */
224 setenv("CTDB_BASE", CTDB_ETCDIR, 0);
225 ctdb_base = getenv("CTDB_BASE");
226 if (ctdb_base == NULL) {
227 D_ERR("CTDB_BASE not set\n");
232 * Command-line option handling
235 pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
237 while ((opt = poptGetNextOpt(pc)) != -1) {
240 fprintf(stderr, "Invalid option %s: %s\n",
241 poptBadOption(pc, 0), poptStrerror(opt));
246 /* If there are extra arguments then exit with usage message */
247 extra_argv = poptGetArgs(pc);
251 poptPrintHelp(pc, stdout, 0);
257 * Logging setup/options
260 /* Log to stderr when running as interactive */
262 options.logging = "file:";
265 if (strcmp(options.logging, "syslog") != 0) {
266 /* This can help when CTDB logging is misconfigured */
267 syslog(LOG_DAEMON|LOG_NOTICE,
268 "CTDB logging to location %s",
272 /* Initialize logging and set the debug level */
273 if (!ctdb_logging_init(ctdb, options.logging, options.debuglevel)) {
276 setenv("CTDB_LOGGING", options.logging, 1);
277 setenv("CTDB_DEBUGLEVEL", debug_level_to_string(DEBUGLEVEL), 1);
279 script_log_level = options.script_log_level;
281 D_NOTICE("CTDB starting on node\n");
284 * Cluster setup/options
287 ret = ctdb_set_transport(ctdb, options.transport);
289 D_ERR("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb));
293 if (options.recovery_lock == NULL) {
294 D_WARNING("Recovery lock not set\n");
296 ctdb->recovery_lock = options.recovery_lock;
298 /* tell ctdb what address to listen on */
299 if (options.myaddress) {
300 ret = ctdb_set_address(ctdb, options.myaddress);
302 D_ERR("ctdb_set_address failed - %s\n",
308 /* tell ctdb what nodes are available */
309 ctdb->nodes_file = talloc_asprintf(ctdb, "%s/nodes", ctdb_base);
310 if (ctdb->nodes_file == NULL) {
311 DBG_ERR(" Out of memory\n");
314 ctdb_load_nodes_file(ctdb);
317 * Database setup/options
320 ctdb->db_directory = options.db_dir;
321 ctdb->db_directory_persistent = options.db_dir_persistent;
322 ctdb->db_directory_state = options.db_dir_state;
324 if (options.max_persistent_check_errors < 0) {
325 ctdb->max_persistent_check_errors = 0xFFFFFFFFFFFFFFFFLL;
327 ctdb->max_persistent_check_errors =
328 (uint64_t)options.max_persistent_check_errors;
332 * Legacy setup/options
335 ctdb->start_as_disabled = options.start_as_disabled;
336 ctdb->start_as_stopped = options.start_as_stopped;
338 /* set ctdbd capabilities */
339 if (options.no_lmaster != 0) {
340 ctdb->capabilities &= ~CTDB_CAP_LMASTER;
342 if (options.no_recmaster != 0) {
343 ctdb->capabilities &= ~CTDB_CAP_RECMASTER;
346 ctdb->do_setsched = (options.nosetsched != 1);
349 * Miscellaneous setup
352 ctdb_tunables_set_defaults(ctdb);
354 ctdb->event_script_dir = talloc_asprintf(ctdb,
357 if (ctdb->event_script_dir == NULL) {
358 DBG_ERR("Out of memory\n");
362 ctdb->notification_script = talloc_asprintf(ctdb,
365 if (ctdb->notification_script == NULL) {
366 D_ERR("Unable to set notification script\n");
371 * Testing and debug options
374 /* Environment variable overrides default */
375 ctdbd_pidfile = getenv("CTDB_PIDFILE");
376 if (ctdbd_pidfile == NULL) {
377 ctdbd_pidfile = CTDB_RUNDIR "/ctdbd.pid";
380 /* Environment variable overrides default */
381 ctdb_socket = getenv("CTDB_SOCKET");
382 if (ctdb_socket == NULL) {
383 ctdb_socket = CTDB_SOCKET;
385 ret = ctdb_set_socketname(ctdb, ctdb_socket);
387 D_ERR("ctdb_set_socketname() failed\n");
391 t = getenv("CTDB_TEST_MODE");
393 ctdb->do_setsched = false;
394 ctdb->do_checkpublicip = false;
398 /* start the protocol running (as a child) */
399 return ctdb_start_daemon(ctdb, interactive?false:true);