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samba-mirror/ctdb/server/ctdbd.c

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/*
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 "lib/events/events.h"
#include "system/filesys.h"
#include "popt.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 *logfile;
const char *recovery_lock_file;
const char *db_dir;
const char *db_dir_persistent;
const char *public_interface;
const char *single_public_ip;
const char *node_ip;
int no_setsched;
} options = {
.nlist = ETCDIR "/ctdb/nodes",
.transport = "tcp",
.event_script_dir = ETCDIR "/ctdb/events.d",
.logfile = VARDIR "/log/log.ctdb",
.db_dir = VARDIR "/ctdb",
.db_dir_persistent = VARDIR "/ctdb/persistent",
};
/*
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->statistics.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" },
{ "node-ip", 0, POPT_ARG_STRING, &options.node_ip, 0, "node ip", "ip-address"},
{ "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 },
{ "reclock", 0, POPT_ARG_STRING, &options.recovery_lock_file, 0, "location of recovery lock file", "filename" },
{ "nosetsched", 0, POPT_ARG_NONE, &options.no_setsched, 0, "disable setscheduler SCHED_FIFO call", 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++;
}
if (!options.recovery_lock_file) {
DEBUG(0,("You must specifiy the location of a recovery lock file with --reclock\n"));
exit(1);
}
talloc_enable_null_tracking();
ctdb_block_signal(SIGPIPE);
ev = event_context_init(NULL);
ctdb = ctdb_cmdline_init(ev);
ret = ctdb_set_logfile(ctdb, options.logfile);
if (ret == -1) {
printf("ctdb_set_logfile to %s failed - %s\n", options.logfile, ctdb_errstr(ctdb));
exit(1);
}
DEBUG(0,("Starting CTDB daemon\n"));
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(0,("ctdb_set_recovery_lock_file failed - %s\n", ctdb_errstr(ctdb)));
exit(1);
}
ret = ctdb_set_transport(ctdb, options.transport);
if (ret == -1) {
DEBUG(0,("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(0,("ctdb_set_address failed - %s\n", ctdb_errstr(ctdb)));
exit(1);
}
}
/* tell ctdb what nodes are available */
ret = ctdb_set_nlist(ctdb, options.nlist);
if (ret == -1) {
DEBUG(0,("ctdb_set_nlist failed - %s\n", ctdb_errstr(ctdb)));
exit(1);
}
/* if a node-ip was specified, verify that it exists in the
nodes file
*/
if (options.node_ip != NULL) {
DEBUG(0,("IP for this node is %s\n", options.node_ip));
ret = ctdb_ip_to_nodeid(ctdb, options.node_ip);
if (ret == -1) {
DEBUG(0,("The specified node-ip:%s is not a valid node address. Exiting.\n", options.node_ip));
exit(1);
}
ctdb->node_ip = options.node_ip;
DEBUG(0,("This is node %d\n", ret));
}
if (options.db_dir) {
ret = ctdb_set_tdb_dir(ctdb, options.db_dir);
if (ret == -1) {
DEBUG(0,("ctdb_set_tdb_dir failed - %s\n", ctdb_errstr(ctdb)));
exit(1);
}
}
if (options.db_dir_persistent) {
ret = ctdb_set_tdb_dir_persistent(ctdb, options.db_dir_persistent);
if (ret == -1) {
DEBUG(0,("ctdb_set_tdb_dir_persistent failed - %s\n", ctdb_errstr(ctdb)));
exit(1);
}
}
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) {
struct ctdb_vnn *svnn;
if (options.public_interface == NULL) {
DEBUG(0,("--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);
}
svnn = talloc_zero(ctdb, struct ctdb_vnn);
CTDB_NO_MEMORY(ctdb, svnn);
ctdb->single_ip_vnn = svnn;
svnn->iface = talloc_strdup(svnn, options.public_interface);
CTDB_NO_MEMORY(ctdb, svnn->iface);
if (inet_aton(options.single_public_ip,
&svnn->public_address.sin_addr) == 0) {
DEBUG(0,("Invalid --single-public-ip argument : %s . This is not a valid ip address. Exiting.\n", options.single_public_ip));
exit(10);
}
svnn->public_address.sin_family = AF_INET;
svnn->public_address.sin_port = 0;
}
if (options.public_address_list) {
ret = ctdb_set_public_addresses(ctdb, options.public_address_list);
if (ret == -1) {
DEBUG(0,("Unable to setup public address list\n"));
exit(1);
}
}
ret = ctdb_set_event_script_dir(ctdb, options.event_script_dir);
if (ret == -1) {
DEBUG(0,("Unable to setup event script directory\n"));
exit(1);
}
/* useful default logfile */
if (ctdb->logfile == NULL) {
char *name = talloc_asprintf(ctdb, "%s/log.ctdb.pnn%u",
VARDIR, ctdb->pnn);
ctdb_set_logfile(ctdb, name);
talloc_free(name);
}
ctdb->do_setsched = !options.no_setsched;
/* setup a environment variable for the event scripts to use to find the
installation directory */
setenv("CTDB_BASE", ETCDIR "/ctdb", 1);
/* start the protocol running (as a child) */
return ctdb_start_daemon(ctdb, interactive?False:True);
}