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Adds a CLUSTER CLEANUP command to clean monitor's history,

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also include a --keep-history (-k) option to indicate how many
days of history to keep
This commit is contained in:
Jaime Casanova
2012-04-14 21:34:06 -05:00
parent 7d579cf71f
commit fd76ec6283
2 changed files with 78 additions and 5 deletions
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81
repmgr.c
View File

@@ -7,7 +7,7 @@
*
* Commands implemented are.
* MASTER REGISTER, STANDBY REGISTER, STANDBY CLONE, STANDBY FOLLOW,
* STANDBY PROMOTE, CLUSTER SHOW
* STANDBY PROMOTE, CLUSTER SHOW, CLUSTER CLEANUP
*
* 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
@@ -46,6 +46,7 @@
#define STANDBY_PROMOTE 4
#define STANDBY_FOLLOW 5
#define CLUSTER_SHOW 6
#define CLUSTER_CLEANUP 7
static void help(const char *progname);
static bool create_recovery_file(const char *data_dir, char *master_conninfo);
@@ -59,6 +60,7 @@ static void do_standby_clone(void);
static void do_standby_promote(void);
static void do_standby_follow(void);
static void do_cluster_show(void);
static void do_cluster_cleanup(void);
static void usage(void);
@@ -73,7 +75,7 @@ bool need_a_node = true;
bool require_password = false;
/* Initialization of runtime options */
t_runtime_options runtime_options = { "", "", "", "", "", "", DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, "" };
t_runtime_options runtime_options = { "", "", "", "", "", "", DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, "", 0 };
t_configuration_options options = { "", -1, "", "", "" };
static char *server_mode = NULL;
@@ -92,6 +94,7 @@ main(int argc, char **argv)
{"config-file", required_argument, NULL, 'f'},
{"remote-user", required_argument, NULL, 'R'},
{"wal-keep-segments", required_argument, NULL, 'w'},
{"keep-history", required_argument, NULL, 'k'},
{"force", no_argument, NULL, 'F'},
{"ignore-rsync-warning", no_argument, NULL, 'I'},
{"verbose", no_argument, NULL, 'v'},
@@ -119,7 +122,7 @@ main(int argc, char **argv)
}
while ((c = getopt_long(argc, argv, "d:h:p:U:D:f:R:w:F:I:v", long_options,
while ((c = getopt_long(argc, argv, "d:h:p:U:D:f:R:w:k:F:I:v", long_options,
&optindex)) != -1)
{
switch (c)
@@ -150,6 +153,12 @@ main(int argc, char **argv)
if (atoi(optarg) > 0)
strncpy(runtime_options.wal_keep_segments, optarg, MAXLEN);
break;
case 'k':
if (atoi(optarg) > 0)
runtime_options.keep_history = atoi(optarg);
else
runtime_options.keep_history = 0;
break;
case 'F':
runtime_options.force = true;
break;
@@ -169,7 +178,7 @@ main(int argc, char **argv)
* Now we need to obtain the action, this comes in one of these forms:
* MASTER REGISTER |
* STANDBY {REGISTER | CLONE [node] | PROMOTE | FOLLOW [node]} |
* CLUSTER SHOW
* CLUSTER {SHOW | CLEANUP}
*
* the node part is optional, if we receive it then we shouldn't
* have received a -h option
@@ -211,6 +220,8 @@ main(int argc, char **argv)
{
if(strcasecmp(server_cmd, "SHOW") == 0)
action = CLUSTER_SHOW;
else if(strcasecmp(server_cmd, "CLEANUP") == 0)
action = CLUSTER_CLEANUP;
}
}
@@ -326,6 +337,9 @@ main(int argc, char **argv)
case CLUSTER_SHOW:
do_cluster_show();
break;
case CLUSTER_CLEANUP:
do_cluster_cleanup();
break;
default:
usage();
exit(ERR_BAD_CONFIG);
@@ -381,6 +395,58 @@ do_cluster_show(void)
}
static void
do_cluster_cleanup(void)
{
int master_id;
PGconn *master_conn;
PGresult *res;
char sqlquery[QUERY_STR_LEN];
char node_role[MAXLEN];
int i;
/* check if there is a master in this cluster */
log_info(_("%s connecting to master database\n"), progname);
master_conn = getMasterConnection(master_conn, options.node, options.cluster_name,
&master_id, NULL);
if (!master_conn)
{
log_err(_("cluster cleanup: cannot connect to master\n"));
exit(ERR_DB_CON);
}
if (runtime_options.keep_history > 0)
{
sqlquery_snprintf(sqlquery, "DELETE FROM %s.repl_monitor "
" WHERE age(now(), last_monitor_time) >= '%d days'::interval;",
repmgr_schema, keep_history);
}
else
{
sqlquery_snprintf(sqlquery, "TRUNCATE TABLE %s.repl_monitor;", repmgr_schema);
}
res = PQexec(conn, sqlquery);
if (PQresultStatus(res) != PGRES_COMMAND_OK)
{
log_err(_("cluster cleanup: Couldn't clean history\n%s\n"), PQerrorMessage(conn));
PQclear(res);
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
PQclear(res);
/* Let's VACUUM the table to avoid autovacuum to be launched in an unexpected hour */
sqlquery_snprintf(sqlquery, "VACUUM %s.repl_monitor;", repmgr_schema);
res = PQexec(conn, sqlquery);
/* XXX There is any need to check this VACUUM happens without problems? */
PQclear(res);
PQfinish(conn);
}
static void
do_master_register(void)
{
@@ -1409,7 +1475,7 @@ void help(const char *progname)
printf(_(" %s [OPTIONS] master {register}\n"), progname);
printf(_(" %s [OPTIONS] standby {register|clone|promote|follow}\n"),
progname);
printf(_(" %s [OPTIONS] cluster show\n"), progname);
printf(_(" %s [OPTIONS] cluster {show|cleanup}\n"), progname);
printf(_("\nGeneral options:\n"));
printf(_(" --help show this help, then exit\n"));
printf(_(" --version output version information, then exit\n"));
@@ -1426,6 +1492,7 @@ void help(const char *progname)
printf(_(" -w, --wal-keep-segments=VALUE minimum value for the GUC wal_keep_segments (default: 5000)\n"));
printf(_(" -F, --force force potentially dangerous operations to happen\n"));
printf(_(" -I, --ignore-rsync-warning Ignore partial transfert warning\n"));
printf(_(" -k, --keep-history=VALUE keeps indicated number of days of history\n"));
printf(_("\n%s performs some tasks like clone a node, promote it "), progname);
printf(_("or making follow another node and then exits.\n"));
@@ -1437,6 +1504,7 @@ void help(const char *progname)
printf(_("new master in the event of a failover\n"));
printf(_(" standby follow - allows the standby to re-point itself to a new master\n"));
printf(_(" cluster show - print node informations\n"));
printf(_(" cluster cleanup - cleans monitor's history\n"));
}
@@ -1715,6 +1783,9 @@ check_parameters_for_action(const int action)
case CLUSTER_SHOW:
/* allow all parameters to be supplied */
break;
case CLUSTER_CLEANUP:
/* allow all parameters to be supplied */
break;
}
return ok;

2
repmgr.h
View File

@@ -59,6 +59,8 @@ typedef struct
char masterport[MAXLEN];
/* parameter used by CLUSTER CLEANUP */
int keep_history;
} t_runtime_options;
#endif