summaryrefslogtreecommitdiffstats
path: root/ctdb/server/ctdbd.c
blob: 5cd04971f075af33c55a869cd9fbe1945b8aead2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
/* 
   standalone ctdb daemon

   Copyright (C) Andrew Tridgell  2006

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "system/filesys.h"
#include "popt.h"
#include "system/time.h"
#include "system/wait.h"
#include "system/network.h"
#include "cmdline.h"
#include "../include/ctdb_private.h"

static struct {
	const char *nlist;
	const char *transport;
	const char *myaddress;
	const char *public_address_list;
	const char *event_script_dir;
	const char *notification_script;
	const char *logfile;
	const char *recovery_lock_file;
	const char *db_dir;
	const char *db_dir_persistent;
	const char *db_dir_state;
	const char *public_interface;
	const char *single_public_ip;
	int         valgrinding;
	int         nosetsched;
	int         use_syslog;
	int         start_as_disabled;
	int         start_as_stopped;
	int         no_lmaster;
	int         no_recmaster;
	int         lvs;
	int	    script_log_level;
	int         no_publicipcheck;
	int         max_persistent_check_errors;
} options = {
	.nlist = NULL,
	.public_address_list = NULL,
	.transport = "tcp",
	.event_script_dir = NULL,
	.logfile = LOGDIR "/log.ctdb",
	.db_dir = CTDB_VARDIR,
	.db_dir_persistent = CTDB_VARDIR "/persistent",
	.db_dir_state = CTDB_VARDIR "/state",
	.script_log_level = DEBUG_ERR,
};

int script_log_level;
bool fast_start;

/*
  called by the transport layer when a packet comes in
*/
static void ctdb_recv_pkt(struct ctdb_context *ctdb, uint8_t *data, uint32_t length)
{
	struct ctdb_req_header *hdr = (struct ctdb_req_header *)data;

	CTDB_INCREMENT_STAT(ctdb, node_packets_recv);

	/* up the counter for this source node, so we know its alive */
	if (ctdb_validate_pnn(ctdb, hdr->srcnode)) {
		/* as a special case, redirected calls don't increment the rx_cnt */
		if (hdr->operation != CTDB_REQ_CALL ||
		    ((struct ctdb_req_call *)hdr)->hopcount == 0) {
			ctdb->nodes[hdr->srcnode]->rx_cnt++;
		}
	}

	ctdb_input_pkt(ctdb, hdr);
}

static const struct ctdb_upcalls ctdb_upcalls = {
	.recv_pkt       = ctdb_recv_pkt,
	.node_dead      = ctdb_node_dead,
	.node_connected = ctdb_node_connected
};



/*
  main program
*/
int main(int argc, const char *argv[])
{
	struct ctdb_context *ctdb;
	int interactive = 0;

	struct poptOption popt_options[] = {
		POPT_AUTOHELP
		POPT_CTDB_CMDLINE
		{ "interactive", 'i', POPT_ARG_NONE, &interactive, 0, "don't fork", NULL },
		{ "public-addresses", 0, POPT_ARG_STRING, &options.public_address_list, 0, "public address list file", "filename" },
		{ "public-interface", 0, POPT_ARG_STRING, &options.public_interface, 0, "public interface", "interface"},
		{ "single-public-ip", 0, POPT_ARG_STRING, &options.single_public_ip, 0, "single public ip", "ip-address"},
		{ "event-script-dir", 0, POPT_ARG_STRING, &options.event_script_dir, 0, "event script directory", "dirname" },
		{ "logfile", 0, POPT_ARG_STRING, &options.logfile, 0, "log file location", "filename" },
		{ "nlist", 0, POPT_ARG_STRING, &options.nlist, 0, "node list file", "filename" },
		{ "notification-script", 0, POPT_ARG_STRING, &options.notification_script, 0, "notification script", "filename" },
		{ "listen", 0, POPT_ARG_STRING, &options.myaddress, 0, "address to listen on", "address" },
		{ "transport", 0, POPT_ARG_STRING, &options.transport, 0, "protocol transport", NULL },
		{ "dbdir", 0, POPT_ARG_STRING, &options.db_dir, 0, "directory for the tdb files", NULL },
		{ "dbdir-persistent", 0, POPT_ARG_STRING, &options.db_dir_persistent, 0, "directory for persistent tdb files", NULL },
		{ "dbdir-state", 0, POPT_ARG_STRING, &options.db_dir_state, 0, "directory for internal state tdb files", NULL },
		{ "reclock", 0, POPT_ARG_STRING, &options.recovery_lock_file, 0, "location of recovery lock file", "filename" },
		{ "pidfile", 0, POPT_ARG_STRING, &ctdbd_pidfile, 0, "location of PID file", "filename" },
		{ "valgrinding", 0, POPT_ARG_NONE, &options.valgrinding, 0, "disable setscheduler SCHED_FIFO call, use mmap for tdbs", NULL },
		{ "nosetsched", 0, POPT_ARG_NONE, &options.nosetsched, 0, "disable setscheduler SCHED_FIFO call, use mmap for tdbs", NULL },
		{ "syslog", 0, POPT_ARG_NONE, &options.use_syslog, 0, "log messages to syslog", NULL },
		{ "start-as-disabled", 0, POPT_ARG_NONE, &options.start_as_disabled, 0, "Node starts in disabled state", NULL },
		{ "start-as-stopped", 0, POPT_ARG_NONE, &options.start_as_stopped, 0, "Node starts in stopped state", NULL },
		{ "no-lmaster", 0, POPT_ARG_NONE, &options.no_lmaster, 0, "disable lmaster role on this node", NULL },
		{ "no-recmaster", 0, POPT_ARG_NONE, &options.no_recmaster, 0, "disable recmaster role on this node", NULL },
		{ "lvs", 0, POPT_ARG_NONE, &options.lvs, 0, "lvs is enabled on this node", NULL },
		{ "script-log-level", 0, POPT_ARG_INT, &options.script_log_level, 0, "log level of event script output", NULL },
		{ "nopublicipcheck", 0, POPT_ARG_NONE, &options.no_publicipcheck, 0, "don't check we have/don't have the correct public ip addresses", NULL },
		{ "max-persistent-check-errors", 0, POPT_ARG_INT,
		  &options.max_persistent_check_errors, 0,
		  "max allowed persistent check errors (default 0)", NULL },
		{ "log-ringbuf-size", 0, POPT_ARG_INT, &log_ringbuf_size, 0, "Number of log messages we can store in the memory ringbuffer", NULL },
		{ "sloppy-start", 0, POPT_ARG_NONE, &fast_start, 0, "Do not perform full recovery on start", NULL },
		POPT_TABLEEND
	};
	int opt, ret;
	const char **extra_argv;
	int extra_argc = 0;
	poptContext pc;
	struct event_context *ev;

	pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);

	while ((opt = poptGetNextOpt(pc)) != -1) {
		switch (opt) {
		default:
			fprintf(stderr, "Invalid option %s: %s\n", 
				poptBadOption(pc, 0), poptStrerror(opt));
			exit(1);
		}
	}

	/* setup the remaining options for the main program to use */
	extra_argv = poptGetArgs(pc);
	if (extra_argv) {
		extra_argv++;
		while (extra_argv[extra_argc]) extra_argc++;
	}

	talloc_enable_null_tracking();

	fault_setup("ctdbd");

	ev = event_context_init(NULL);
	tevent_loop_allow_nesting(ev);

	ctdb = ctdb_cmdline_init(ev);

	ctdb->start_as_disabled = options.start_as_disabled;
	ctdb->start_as_stopped  = options.start_as_stopped;

	script_log_level = options.script_log_level;

	ret = ctdb_set_logfile(ctdb, options.logfile, options.use_syslog);
	if (ret == -1) {
		printf("ctdb_set_logfile to %s failed - %s\n", 
		       options.use_syslog?"syslog":options.logfile, ctdb_errstr(ctdb));
		exit(1);
	}

	DEBUG(DEBUG_NOTICE,("CTDB starting on node\n"));

	gettimeofday(&ctdb->ctdbd_start_time, NULL);
	gettimeofday(&ctdb->last_recovery_started, NULL);
	gettimeofday(&ctdb->last_recovery_finished, NULL);
	ctdb->recovery_mode    = CTDB_RECOVERY_NORMAL;
	ctdb->recovery_master  = (uint32_t)-1;
	ctdb->upcalls          = &ctdb_upcalls;
	ctdb->idr              = idr_init(ctdb);
	ctdb->recovery_lock_fd = -1;

	ctdb_tunables_set_defaults(ctdb);

	ret = ctdb_set_recovery_lock_file(ctdb, options.recovery_lock_file);
	if (ret == -1) {
		DEBUG(DEBUG_ALERT,("ctdb_set_recovery_lock_file failed - %s\n", ctdb_errstr(ctdb)));
		exit(1);
	}

	ret = ctdb_set_transport(ctdb, options.transport);
	if (ret == -1) {
		DEBUG(DEBUG_ALERT,("ctdb_set_transport failed - %s\n", ctdb_errstr(ctdb)));
		exit(1);
	}

	/* tell ctdb what address to listen on */
	if (options.myaddress) {
		ret = ctdb_set_address(ctdb, options.myaddress);
		if (ret == -1) {
			DEBUG(DEBUG_ALERT,("ctdb_set_address failed - %s\n", ctdb_errstr(ctdb)));
			exit(1);
		}
	}

	/* set ctdbd capabilities */
	ctdb->capabilities = 0;
	if (options.no_lmaster == 0) {
		ctdb->capabilities |= CTDB_CAP_LMASTER;
	}
	if (options.no_recmaster == 0) {
		ctdb->capabilities |= CTDB_CAP_RECMASTER;
	}
	if (options.lvs != 0) {
		ctdb->capabilities |= CTDB_CAP_LVS;
	}

	/* Initialise this node's PNN to the unknown value.  This will
	 * be set to the correct value by either ctdb_add_node() as
	 * part of loading the nodes file or by
	 * ctdb_tcp_listen_automatic() when the transport is
	 * initialised.  At some point we should de-optimise this and
	 * pull it out into ctdb_start_daemon() so it is done clearly
	 * and only in one place.
	 */
	ctdb->pnn = -1;

	/* Default value for CTDB_BASE - don't override */
	setenv("CTDB_BASE", ETCDIR "/ctdb", 0);

	/* tell ctdb what nodes are available */
	if (options.nlist != NULL) {
		ctdb->nodes_file = options.nlist;
	} else {
		ctdb->nodes_file =
			talloc_asprintf(ctdb, "%s/nodes", getenv("CTDB_BASE"));
		if (ctdb->nodes_file == NULL) {
			DEBUG(DEBUG_ALERT,(__location__ " Out of memory\n"));
			exit(1);
		}
	}
	ctdb_load_nodes_file(ctdb);

	ctdb->db_directory = options.db_dir;
	mkdir_p_or_die(ctdb->db_directory, 0700);

	ctdb->db_directory_persistent = options.db_dir_persistent;
	mkdir_p_or_die(ctdb->db_directory_persistent, 0700);

	ctdb->db_directory_state = options.db_dir_state;
	mkdir_p_or_die(ctdb->db_directory_state, 0700);

	if (options.public_interface) {
		ctdb->default_public_interface = talloc_strdup(ctdb, options.public_interface);
		CTDB_NO_MEMORY(ctdb, ctdb->default_public_interface);
	}

	if (options.single_public_ip) {
		if (options.public_interface == NULL) {
			DEBUG(DEBUG_ALERT,("--single_public_ip used but --public_interface is not specified. You must specify the public interface when using single public ip. Exiting\n"));
			exit(10);
		}

		ret = ctdb_set_single_public_ip(ctdb, options.public_interface,
						options.single_public_ip);
		if (ret != 0) {
			DEBUG(DEBUG_ALERT,("Invalid --single-public-ip argument : %s . This is not a valid ip address. Exiting.\n", options.single_public_ip));
			exit(10);
		}
	}

	if (options.event_script_dir != NULL) {
		ctdb->event_script_dir = options.event_script_dir;
	} else {
		ctdb->event_script_dir = talloc_asprintf(ctdb, "%s/events.d",
							 getenv("CTDB_BASE"));
		if (ctdb->event_script_dir == NULL) {
			DEBUG(DEBUG_ALERT,(__location__ " Out of memory\n"));
			exit(1);
		}
	}

	if (options.notification_script != NULL) {
		ret = ctdb_set_notification_script(ctdb, options.notification_script);
		if (ret == -1) {
			DEBUG(DEBUG_ALERT,("Unable to setup notification script\n"));
			exit(1);
		}
	}

	ctdb->valgrinding = options.valgrinding;
	if (options.valgrinding || options.nosetsched) {
		ctdb->do_setsched = 0;
	} else {
		ctdb->do_setsched = 1;
	}

	ctdb->public_addresses_file = options.public_address_list;
	ctdb->do_checkpublicip = !options.no_publicipcheck;

	if (options.max_persistent_check_errors < 0) {
		ctdb->max_persistent_check_errors = 0xFFFFFFFFFFFFFFFFLL;
	} else {
		ctdb->max_persistent_check_errors = (uint64_t)options.max_persistent_check_errors;
	}

	/* start the protocol running (as a child) */
	return ctdb_start_daemon(ctdb, interactive?false:true, options.use_syslog);
}