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Support --create-recovery-conf in Pg12

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This commit is contained in:
Ian Barwick
2019-08-15 17:36:12 +09:00
committed by Ian Barwick
parent d5ed38f573
commit b5225a2662
1 changed files with 130 additions and 70 deletions
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200
repmgr-action-standby.c
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@@ -114,6 +114,8 @@ static char *make_barman_ssh_command(char *buf);
static bool create_recovery_file(t_node_info *node_record, t_conninfo_param_list *primary_conninfo, int server_version_num, char *dest, bool as_file);
static void write_primary_conninfo(PQExpBufferData *dest, t_conninfo_param_list *param_list);
static bool write_standby_signal(void);
static bool check_sibling_nodes(NodeInfoList *sibling_nodes, SiblingNodeStats *sibling_nodes_stats);
static bool check_free_wal_senders(int available_wal_senders, SiblingNodeStats *sibling_nodes_stats, bool *dry_run_success);
static bool check_free_slots(t_node_info *local_node_record, SiblingNodeStats *sibling_nodes_stats, bool *dry_run_success);
@@ -673,8 +675,14 @@ do_standby_clone(void)
true) == false)
{
/* create_recovery_file() will log an error */
// XXX Pg12
log_notice(_("unable to create recovery.conf; see preceding error messages"));
if (source_server_version_num >= 120000)
{
log_notice(_("unable to write replication configuration; see preceding error messages"));
}
else
{
log_notice(_("unable to create recovery.conf; see preceding error messages"));
}
log_hint(_("data directory (\"%s\") may need to be cleaned up manually"),
local_data_directory);
@@ -1177,40 +1185,42 @@ _do_create_recovery_conf(void)
}
}
/* check if recovery.conf exists */
// XXX skip in Pg12
snprintf(recovery_file_path, sizeof(recovery_file_path),
"%s/%s",
local_data_directory,
RECOVERY_COMMAND_FILE);
if (stat(recovery_file_path, &st) == -1)
/* check if recovery.conf exists (Pg11 and earlier only) */
if (PQserverVersion(upstream_conn) < 120000)
{
if (errno != ENOENT)
{
log_error(_("unable to check for existing \"recovery.conf\" file in \"%s\""),
local_data_directory);
log_detail("%s", strerror(errno));
exit(ERR_BAD_CONFIG);
}
}
else
{
if (runtime_options.force == false)
{
log_error(_("\"recovery.conf\" already exists in \"%s\""),
local_data_directory);
log_hint(_("use -F/--force to overwrite an existing \"recovery.conf\" file"));
exit(ERR_BAD_CONFIG);
}
snprintf(recovery_file_path, sizeof(recovery_file_path),
"%s/%s",
local_data_directory,
RECOVERY_COMMAND_FILE);
if (runtime_options.dry_run == true)
if (stat(recovery_file_path, &st) == -1)
{
log_warning(_("the existing \"recovery.conf\" file would be overwritten"));
if (errno != ENOENT)
{
log_error(_("unable to check for existing \"recovery.conf\" file in \"%s\""),
local_data_directory);
log_detail("%s", strerror(errno));
exit(ERR_BAD_CONFIG);
}
}
else
{
log_warning(_("the existing \"recovery.conf\" file will be overwritten"));
if (runtime_options.force == false)
{
log_error(_("\"recovery.conf\" already exists in \"%s\""),
local_data_directory);
log_hint(_("use -F/--force to overwrite an existing \"recovery.conf\" file"));
exit(ERR_BAD_CONFIG);
}
if (runtime_options.dry_run == true)
{
log_warning(_("the existing \"recovery.conf\" file would be overwritten"));
}
else
{
log_warning(_("the existing \"recovery.conf\" file will be overwritten"));
}
}
}
@@ -1223,8 +1233,15 @@ _do_create_recovery_conf(void)
recovery_conf_contents,
false);
// XXX Pg12
log_info(_("would create \"recovery.conf\" file in \"%s\""), local_data_directory);
if (PQserverVersion(upstream_conn) >= 120000)
{
log_info(_("following items would be added to \"postgresql.auto.conf\" in \"%s\""), local_data_directory);
}
else
{
log_info(_("would create \"recovery.conf\" file in \"%s\""), local_data_directory);
}
log_detail(_("\n%s"), recovery_conf_contents);
}
else
@@ -1235,13 +1252,25 @@ _do_create_recovery_conf(void)
local_data_directory,
true))
{
// XXX Pg12
log_error(_("unable to create \"recovery.conf\""));
if (PQserverVersion(upstream_conn) >= 120000)
{
log_error(_("unable to write replication configuration to \"postgresql.auto.conf\""));
}
else
{
log_error(_("unable to create \"recovery.conf\""));
}
}
else
{
// XXX Pg12
log_notice(_("\"recovery.conf\" created as \"%s\""), recovery_file_path);
if (PQserverVersion(upstream_conn) >= 120000)
{
log_notice(_("replication configuration written to \"postgresql.auto.conf\""));
}
else
{
log_notice(_("\"recovery.conf\" created as \"%s\""), recovery_file_path);
}
if (node_is_running == true)
{
@@ -1250,6 +1279,23 @@ _do_create_recovery_conf(void)
}
}
/* Pg12 and later: add standby.signal, if not already there */
if (PQserverVersion(upstream_conn) >= 120000)
{
if (runtime_options.dry_run == true)
{
log_info(_("would write \"standby.signal\" file"));
}
else
{
if (write_standby_signal() == false)
{
log_error(_("unable to write \"standby.signal\" file"));
}
}
}
/* add replication slot, if required */
if (slot_creation_required == true)
{
@@ -7059,50 +7105,17 @@ create_recovery_file(t_node_info *node_record, t_conninfo_param_list *primary_co
*/
if (server_version_num >= 120000)
{
char standby_signal_file_path[MAXPGPATH] = "";
FILE *file;
if (modify_auto_conf(dest, &recovery_config) == false)
{
return false;
}
/* create standby.signal */
snprintf(standby_signal_file_path, MAXPGPATH,
"%s/%s",
config_file_options.data_directory,
STANDBY_SIGNAL_FILE);
/* Set umask to 0600 */
um = umask((~(S_IRUSR | S_IWUSR)) & (S_IRWXG | S_IRWXO));
file = fopen(standby_signal_file_path, "w");
umask(um);
if (file == NULL)
if (write_standby_signal() == false)
{
log_error(_("unable to create %s file at \"%s\""),
STANDBY_SIGNAL_FILE,
standby_signal_file_path);
log_detail("%s", strerror(errno));
return false;
}
// write "created by repmgr" or something
if (fputs("# foo", file) == EOF)
{
log_error(_("unable to write to %s file at \"%s\""),
STANDBY_SIGNAL_FILE,
standby_signal_file_path);
fclose(file);
return false;
}
fclose(file);
return true;
}
@@ -7154,6 +7167,53 @@ create_recovery_file(t_node_info *node_record, t_conninfo_param_list *primary_co
}
/*
* create standby.signal (PostgreSQL 12 and later)
*/
static bool
write_standby_signal(void)
{
char standby_signal_file_path[MAXPGPATH] = "";
FILE *file;
mode_t um;
snprintf(standby_signal_file_path, MAXPGPATH,
"%s/%s",
config_file_options.data_directory,
STANDBY_SIGNAL_FILE);
/* Set umask to 0600 */
um = umask((~(S_IRUSR | S_IWUSR)) & (S_IRWXG | S_IRWXO));
file = fopen(standby_signal_file_path, "w");
umask(um);
if (file == NULL)
{
log_error(_("unable to create %s file at \"%s\""),
STANDBY_SIGNAL_FILE,
standby_signal_file_path);
log_detail("%s", strerror(errno));
return false;
}
if (fputs("# created by repmgr\n", file) == EOF)
{
log_error(_("unable to write to %s file at \"%s\""),
STANDBY_SIGNAL_FILE,
standby_signal_file_path);
fclose(file);
return false;
}
fclose(file);
return true;
}
static void
write_primary_conninfo(PQExpBufferData *dest, t_conninfo_param_list *param_list)
{