github/repmgr
1
0
Fork 0
mirror of https://github.com/EnterpriseDB/repmgr.git synced 2026-03-24 15:46:29 +00:00
Code Issues Packages Projects Releases 1 Wiki Activity

Initial support for physical replication slots

Browse Source 
Todo:
 - if slots specified in repmgr.conf, verify server version
 - store generated slot name in `repl_nodes` table
This commit is contained in:
Ian Barwick
2015-02-02 15:53:53 +09:00
parent 01360c3d39
commit 2ece014952
6 changed files with 106 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
repmgr.c
View File

@@ -96,6 +96,8 @@ t_configuration_options options = T_CONFIGURATION_OPTIONS_INITIALIZER;
static char *server_mode = NULL;
static char *server_cmd = NULL;
static char repmgr_slot_name[MAXLEN];
int
main(int argc, char **argv)
{
@@ -390,6 +392,12 @@ main(int argc, char **argv)
maxlen_snprintf(repmgr_schema, "%s%s", DEFAULT_REPMGR_SCHEMA_PREFIX,
options.cluster_name);
/* Initialise slot name, if required (9.4 and later) */
if(options.use_replication_slots)
{
maxlen_snprintf(repmgr_slot_name, "repmgr_slot_%i", options.node);
}
switch (action)
{
case MASTER_REGISTER:
@@ -1015,7 +1023,6 @@ do_standby_clone(void)
{
log_err(_("%s: Aborting, remote host %s is not reachable.\n"),
progname, runtime_options.host);
PQfinish(conn);
retval = ERR_BAD_SSH;
goto stop_backup;
}
@@ -1071,14 +1078,38 @@ stop_backup:
log_err(_("Unable to take a base backup of the master server\n"));
log_warning(_("The destination directory (%s) will need to be cleaned up manually\n"),
local_data_directory);
PQfinish(conn);
exit(retval);
}
/* Finally, write the recovery.conf file */
create_recovery_file(local_data_directory);
/*
* If replication slots requested, create appropriate slot on the primary;
* create_recovery_file() will already have written `primary_slot_name` into
* `recovery.conf`
*/
if(options.use_replication_slots)
{
if(create_replication_slot(conn, repmgr_slot_name) == false)
{
log_err(_("Unable to create slot '%s' on the primary node: %s\n"),
repmgr_slot_name,
PQerrorMessage(conn));
PQfinish(conn);
exit(ERR_DB_QUERY);
}
}
log_notice(_("%s base backup of standby complete\n"), progname);
/*
* XXX It might be nice to provide the following options:
* - have repmgr start the daemon automatically
* - provide a custom pg_ctl command
*/
log_notice("HINT: You can now start your postgresql server\n");
if (test_mode)
{
@@ -1087,9 +1118,10 @@ stop_backup:
}
else
{
log_notice("for example : /etc/init.d/postgresql start\n");
log_notice("for example : /etc/init.d/postgresql start\n");
}
PQfinish(conn);
exit(retval);
}
@@ -1709,12 +1741,21 @@ create_recovery_file(const char *data_dir)
/* min_recovery_apply_delay = ... (optional) */
if(*runtime_options.min_recovery_apply_delay)
{
maxlen_snprintf(line, "\nmin_recovery_apply_delay = %s\n",
maxlen_snprintf(line, "min_recovery_apply_delay = %s\n",
runtime_options.min_recovery_apply_delay);
if(write_recovery_file_line(recovery_file, recovery_file_path, line) == false)
return false;
}
/* primary_slot_name = '...' (optional, for 9.4 and later) */
if(options.use_replication_slots)
{
maxlen_snprintf(line, "primary_slot_name = %s\n",
repmgr_slot_name);
if(write_recovery_file_line(recovery_file, recovery_file_path, line) == false)
return false;
}
fclose(recovery_file);
return true;