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on init of witness server create db and user to avoid using postgres

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This commit is contained in:
Nathan Van Overloop
2014-06-05 13:40:04 +02:00
committed by Nathan Van Overloop
parent 5b15fcff5c
commit 4f810aee2c
2 changed files with 94 additions and 7 deletions
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2
log.c
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@@ -37,7 +37,7 @@
#define DEFAULT_SYSLOG_FACILITY LOG_LOCAL0 #define DEFAULT_SYSLOG_FACILITY LOG_LOCAL0
#endif #endif
/* #define REPMGR_DEBUG */ #define REPMGR_DEBUG
void void
stderr_log_with_level(const char *level_name, int level, const char *fmt, ...) stderr_log_with_level(const char *level_name, int level, const char *fmt, ...)

95
repmgr.c
View File

@@ -1745,6 +1745,76 @@ do_witness_create(void)
fclose(pg_conf); fclose(pg_conf);
/* start new instance */
sprintf(script, "%s/pg_ctl %s -w -D %s start", options.pg_bindir,
options.pgctl_options, runtime_options.dest_dir);
log_info(_("Start cluster for witness: %s"), script);
r = system(script);
if (r != 0)
{
log_err(_("Can't start cluster for witness server\n"));
PQfinish(masterconn);
exit(ERR_BAD_CONFIG);
}
/* check if we need to create a database */
if(runtime_options.dbname[0] && strcmp(runtime_options.dbname,"postgres")!=0 && runtime_options.localport[0])
{
/* create required db */
sprintf(script, "%s/psql -h 127.0.0.1 -p %s -U postgres -v ON_ERROR_STOP=1 -c \"CREATE DATABASE %s WITH TEMPLATE = template0 ENCODING = 'UTF8' LC_COLLATE = 'en_US.UTF-8' LC_CTYPE = 'en_US.UTF-8';\"",
options.pg_bindir,runtime_options.localport,runtime_options.dbname);
log_info("Create database for witness db: %s.\n", script);
r = system(script);
if (r != 0)
{
log_err("Can't create database for witness server\n");
PQfinish(masterconn);
exit(ERR_BAD_CONFIG);
}
}
/* check if we need to create a user */
if (runtime_options.username[0] && runtime_options.localport[0] && strcmp(runtime_options.username,"postgres")!=0 )
{
/* create required user needs to be superuser to create untrusted language function in c */
sprintf(script, "%s/psql -h 127.0.0.1 -p %s -U postgres -v ON_ERROR_STOP=1 -c \"CREATE ROLE %s SUPERUSER LOGIN\"", options.pg_bindir,
runtime_options.localport,runtime_options.username);
log_info("Create user for witness db: %s.\n", script);
r = system(script);
if (r != 0)
{
log_err("Can't create user for witness server\n");
PQfinish(masterconn);
exit(ERR_BAD_CONFIG);
}
/* eventually alter owner for database */
if(runtime_options.dbname[0] && strcmp(runtime_options.dbname,"postgres")!=0)
{
/* alter owner of database */
sprintf(script, "%s/psql -h 127.0.0.1 -p %s -U postgres -v ON_ERROR_STOP=1 -c \"ALTER DATABASE %s OWNER TO %s;\"", options.pg_bindir,
runtime_options.localport,runtime_options.dbname,runtime_options.username);
log_info("Change owner of witnesss db: %s.\n", script);
r = system(script);
if (r != 0)
{
log_err("Can't create user for witness server\n");
PQfinish(masterconn);
exit(ERR_BAD_CONFIG);
}
}
else if(runtime_options.dbname[0])
{
log_err("Can not set username and not change the database from the default postgres db\n");
PQfinish(masterconn);
exit(ERR_BAD_CONFIG);
}
}
/* Get the pg_hba.conf full path */ /* Get the pg_hba.conf full path */
sqlquery_snprintf(sqlquery, "SELECT name, setting " sqlquery_snprintf(sqlquery, "SELECT name, setting "
" FROM pg_settings " " FROM pg_settings "
@@ -1778,18 +1848,19 @@ do_witness_create(void)
exit(ERR_BAD_CONFIG); exit(ERR_BAD_CONFIG);
} }
/* start new instance */ /* reload to adapt for changed pg_hba.conf */
sprintf(script, "%s/pg_ctl %s -w -D %s start", options.pg_bindir, sprintf(script, "%s/pg_ctl %s -w -D %s reload", options.pg_bindir,
options.pgctl_options, runtime_options.dest_dir); options.pgctl_options, runtime_options.dest_dir);
log_info(_("Start cluster for witness: %s"), script); log_info(_("Reload cluster config for witness: %s"), script);
r = system(script); r = system(script);
if (r != 0) if (r != 0)
{ {
log_err(_("Can't start cluster for witness server\n")); log_err(_("Can't reload cluster for witness server\n"));
PQfinish(masterconn); PQfinish(masterconn);
exit(ERR_BAD_CONFIG); exit(ERR_BAD_CONFIG);
} }
/* register ourselves in the master */ /* register ourselves in the master */
sqlquery_snprintf(sqlquery, "INSERT INTO %s.repl_nodes(id, cluster, name, conninfo, priority, witness) " sqlquery_snprintf(sqlquery, "INSERT INTO %s.repl_nodes(id, cluster, name, conninfo, priority, witness) "
"VALUES (%d, '%s', '%s', '%s', %d, true)", "VALUES (%d, '%s', '%s', '%s', %d, true)",
@@ -1829,6 +1900,22 @@ do_witness_create(void)
PQfinish(witnessconn); PQfinish(witnessconn);
log_notice(_("Configuration has been successfully copied to the witness\n")); log_notice(_("Configuration has been successfully copied to the witness\n"));
/* drop superuser powers if needed */
if (runtime_options.username[0] && runtime_options.localport[0] && strcmp(runtime_options.username,"postgres")!=0 )
{
sprintf(script, "%s/psql -h 127.0.0.1 -p %s -U postgres -v ON_ERROR_STOP=1 -c \"ALTER ROLE %s NOSUPERUSER \"",
options.pg_bindir,runtime_options.localport,runtime_options.username);
log_info("Drop superuser powers on user for witness db: %s.\n", script);
r = system(script);
if (r != 0)
{
log_err("Can't alter superuser power for dbuser on witness\n");
/* no exit here...nevermind */
}
}
} }