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Catch various corner cases when restarting a PostgreSQL instance

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This commit is contained in:
Ian Barwick
2018-02-14 11:28:38 +09:00
parent c9eb1bfcc0
commit de65afdac8
3 changed files with 101 additions and 45 deletions
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86
repmgr-action-standby.c
View File

@@ -2078,28 +2078,88 @@ do_standby_follow_internal(PGconn *primary_conn, t_node_info *primary_node_recor
if (server_up == true)
{
action = "restart";
get_server_action(ACTION_RESTART, server_command, config_file_options.data_directory);
/* no "service_restart_command" defined - stop and start using pg_ctl*/
if (config_file_options.service_restart_command[0] == '\0')
{
action = "stopp"; /* sic */
get_server_action(ACTION_STOP_WAIT, server_command, config_file_options.data_directory);
/* if translation needed, generate messages in the preceding if/else */
log_notice(_("%sing server using \"%s\""),
action,
server_command);
success = local_command(server_command, &output_buf);
if (success == false)
{
log_error(_("unable to %s server"), action);
*error_code = ERR_NO_RESTART;
return false;
}
action = "start";
get_server_action(ACTION_START, server_command, config_file_options.data_directory);
/* if translation needed, generate messages in the preceding if/else */
log_notice(_("%sing server using \"%s\""),
action,
server_command);
success = local_command(server_command, &output_buf);
if (success == false)
{
log_error(_("unable to %s server"), action);
*error_code = ERR_NO_RESTART;
return false;
}
}
else
{
action = "restart";
get_server_action(ACTION_RESTART, server_command, config_file_options.data_directory);
/* if translation needed, generate messages in the preceding if/else */
log_notice(_("%sing server using \"%s\""),
action,
server_command);
success = local_command(server_command, &output_buf);
if (success == false)
{
log_error(_("unable to %s server"), action);
*error_code = ERR_NO_RESTART;
return false;
}
}
}
else
{
action = "start";
get_server_action(ACTION_START, server_command, config_file_options.data_directory);
}
/* if translation needed, generate messages in the preceding if/else */
log_notice(_("%sing server using \"%s\""),
action,
server_command);
/* if translation needed, generate messages in the preceding if/else */
log_notice(_("%sing server using \"%s\""),
action,
server_command);
success = local_command(server_command, &output_buf);
success = local_command(server_command, &output_buf);
if (success == false)
{
log_error(_("unable to %s server"), action);
if (success == false)
{
log_error(_("unable to %s server"), action);
*error_code = ERR_NO_RESTART;
return false;
*error_code = ERR_NO_RESTART;
return false;
}
}
}

1
repmgr-client-global.h
View File

@@ -181,6 +181,7 @@ typedef enum
ACTION_NONE,
ACTION_START,
ACTION_STOP,
ACTION_STOP_WAIT,
ACTION_RESTART,
ACTION_RELOAD,
ACTION_PROMOTE

59
repmgr-client.c
View File

@@ -2137,7 +2137,8 @@ local_command(const char *command, PQExpBufferData *outputbuf)
retval = pclose(fp);
success = (WEXITSTATUS(retval) == 0) ? true : false;
/* */
success = (WEXITSTATUS(retval) == 0 || WEXITSTATUS(retval) == 141) ? true : false;
log_verbose(LOG_DEBUG, "result of command was %i (%i)", WEXITSTATUS(retval), retval);
@@ -2459,18 +2460,15 @@ get_server_action(t_server_action action, char *script, char *data_dir)
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
appendShellString(&command,
data_dir);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
" start");
strncpy(script, command.data, MAXLEN);
@@ -2482,6 +2480,7 @@ get_server_action(t_server_action action, char *script, char *data_dir)
}
case ACTION_STOP:
case ACTION_STOP_WAIT:
{
if (config_file_options.service_stop_command[0] != '\0')
{
@@ -2491,19 +2490,23 @@ get_server_action(t_server_action action, char *script, char *data_dir)
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
"%s %s -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
appendShellString(&command,
data_dir);
appendPQExpBuffer(
&command,
" -m fast -W stop");
if (action == ACTION_STOP_WAIT)
appendPQExpBuffer(&command,
" -w");
else
appendPQExpBuffer(&command,
" -W");
appendPQExpBuffer(&command,
" -m fast stop");
strncpy(script, command.data, MAXLEN);
@@ -2522,18 +2525,15 @@ get_server_action(t_server_action action, char *script, char *data_dir)
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
appendShellString(&command,
data_dir);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
" restart");
strncpy(script, command.data, MAXLEN);
@@ -2553,18 +2553,15 @@ get_server_action(t_server_action action, char *script, char *data_dir)
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
appendShellString(&command,
data_dir);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
" reload");
strncpy(script, command.data, MAXLEN);
@@ -2585,18 +2582,15 @@ get_server_action(t_server_action action, char *script, char *data_dir)
else
{
initPQExpBuffer(&command);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
"%s %s -w -D ",
make_pg_path("pg_ctl"),
config_file_options.pg_ctl_options);
appendShellString(
&command,
appendShellString(&command,
data_dir);
appendPQExpBuffer(
&command,
appendPQExpBuffer(&command,
" promote");
strncpy(script, command.data, MAXLEN);
@@ -2630,6 +2624,7 @@ data_dir_required_for_action(t_server_action action)
return true;
case ACTION_STOP:
case ACTION_STOP_WAIT:
if (config_file_options.service_stop_command[0] != '\0')
{
return false;