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Rename some "repmgr daemon ..." commands to "repmgr service ..."

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"repmgr daemon" can be interpreted to mean the commands affect the local
daemon process only. Rename the commands which affect the entire cluster
to "repmgr service ...".

The "repmgr daemon ..." form of the affected commands is retained for backwards
 compatibility.
This commit is contained in:
Ian Barwick
2019-08-28 14:14:20 +09:00
parent 3e812f6e91
commit 931da14df1
28 changed files with 1557 additions and 646 deletions
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523
repmgr-action-daemon.c
View File

@@ -26,478 +26,9 @@
#include "repmgr-client-global.h"
#include "repmgr-action-daemon.h"
#define REPMGR_DAEMON_STOP_START_WAIT 15
#define REPMGR_DAEMON_STATUS_START_HINT _("use \"repmgr daemon status\" to confirm that repmgrd was successfully started")
#define REPMGR_DAEMON_STATUS_STOP_HINT _("use \"repmgr daemon status\" to confirm that repmgrd was successfully stopped")
/*
* Possibly also show:
* - repmgrd start time?
* - repmgrd mode
* - priority
* - whether promotion candidate (due to zero priority/different location)
*/
typedef enum
{
STATUS_ID = 0,
STATUS_NAME,
STATUS_ROLE,
STATUS_PG,
STATUS_UPSTREAM_NAME,
STATUS_LOCATION,
STATUS_PRIORITY,
STATUS_REPMGRD,
STATUS_PID,
STATUS_PAUSED,
STATUS_UPSTREAM_LAST_SEEN
} StatusHeader;
#define STATUS_HEADER_COUNT 11
struct ColHeader headers_status[STATUS_HEADER_COUNT];
static void fetch_node_records(PGconn *conn, NodeInfoList *node_list);
static void _do_repmgr_pause(bool pause);
void
do_daemon_status(void)
{
PGconn *conn = NULL;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
int i;
RepmgrdInfo **repmgrd_info;
ItemList warnings = {NULL, NULL};
bool connection_error_found = false;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database"));
if (strlen(config_file_options.conninfo))
conn = establish_db_connection(config_file_options.conninfo, true);
else
conn = establish_db_connection_by_params(&source_conninfo, true);
fetch_node_records(conn, &nodes);
repmgrd_info = (RepmgrdInfo **) pg_malloc0(sizeof(RepmgrdInfo *) * nodes.node_count);
if (repmgrd_info == NULL)
{
log_error(_("unable to allocate memory"));
exit(ERR_OUT_OF_MEMORY);
}
strncpy(headers_status[STATUS_ID].title, _("ID"), MAXLEN);
strncpy(headers_status[STATUS_NAME].title, _("Name"), MAXLEN);
strncpy(headers_status[STATUS_ROLE].title, _("Role"), MAXLEN);
strncpy(headers_status[STATUS_PG].title, _("Status"), MAXLEN);
strncpy(headers_status[STATUS_UPSTREAM_NAME].title, _("Upstream"), MAXLEN);
/* following only displayed with the --detail option */
strncpy(headers_status[STATUS_LOCATION].title, _("Location"), MAXLEN);
if (runtime_options.compact == true)
strncpy(headers_status[STATUS_PRIORITY].title, _("Prio."), MAXLEN);
else
strncpy(headers_status[STATUS_PRIORITY].title, _("Priority"), MAXLEN);
strncpy(headers_status[STATUS_REPMGRD].title, _("repmgrd"), MAXLEN);
strncpy(headers_status[STATUS_PID].title, _("PID"), MAXLEN);
strncpy(headers_status[STATUS_PAUSED].title, _("Paused?"), MAXLEN);
if (runtime_options.compact == true)
strncpy(headers_status[STATUS_UPSTREAM_LAST_SEEN].title, _("Upstr. last"), MAXLEN);
else
strncpy(headers_status[STATUS_UPSTREAM_LAST_SEEN].title, _("Upstream last seen"), MAXLEN);
for (i = 0; i < STATUS_HEADER_COUNT; i++)
{
headers_status[i].max_length = strlen(headers_status[i].title);
headers_status[i].display = true;
}
if (runtime_options.detail == false)
{
headers_status[STATUS_LOCATION].display = false;
headers_status[STATUS_PRIORITY].display = false;
}
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
int j;
PQExpBufferData node_status;
PQExpBufferData upstream;
repmgrd_info[i] = pg_malloc0(sizeof(RepmgrdInfo));
repmgrd_info[i]->node_id = cell->node_info->node_id;
repmgrd_info[i]->pid = UNKNOWN_PID;
repmgrd_info[i]->recovery_type = RECTYPE_UNKNOWN;
repmgrd_info[i]->paused = false;
repmgrd_info[i]->running = false;
repmgrd_info[i]->pg_running = true;
repmgrd_info[i]->wal_paused_pending_wal = false;
repmgrd_info[i]->upstream_last_seen = -1;
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(cell->node_info->conn) != CONNECTION_OK)
{
connection_error_found = true;
if (runtime_options.verbose)
{
char error[MAXLEN];
strncpy(error, PQerrorMessage(cell->node_info->conn), MAXLEN);
item_list_append_format(&warnings,
"when attempting to connect to node \"%s\" (ID: %i), following error encountered :\n\"%s\"",
cell->node_info->node_name, cell->node_info->node_id, trim(error));
}
else
{
item_list_append_format(&warnings,
"unable to connect to node \"%s\" (ID: %i)",
cell->node_info->node_name, cell->node_info->node_id);
}
repmgrd_info[i]->pg_running = false;
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("n/a"));
maxlen_snprintf(repmgrd_info[i]->pid_text, "%s", _("n/a"));
}
else
{
cell->node_info->node_status = NODE_STATUS_UP;
cell->node_info->recovery_type = get_recovery_type(cell->node_info->conn);
repmgrd_info[i]->pid = repmgrd_get_pid(cell->node_info->conn);
repmgrd_info[i]->running = repmgrd_is_running(cell->node_info->conn);
if (repmgrd_info[i]->running == true)
{
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("running"));
}
else
{
maxlen_snprintf(repmgrd_info[i]->repmgrd_running, "%s", _("not running"));
}
if (repmgrd_info[i]->pid == UNKNOWN_PID)
{
maxlen_snprintf(repmgrd_info[i]->pid_text, "%s", _("n/a"));
}
else
{
maxlen_snprintf(repmgrd_info[i]->pid_text, "%i", repmgrd_info[i]->pid);
}
repmgrd_info[i]->paused = repmgrd_is_paused(cell->node_info->conn);
repmgrd_info[i]->recovery_type = get_recovery_type(cell->node_info->conn);
if (repmgrd_info[i]->recovery_type == RECTYPE_STANDBY)
{
repmgrd_info[i]->wal_paused_pending_wal = is_wal_replay_paused(cell->node_info->conn, true);
if (repmgrd_info[i]->wal_paused_pending_wal == true)
{
item_list_append_format(&warnings,
_("WAL replay is paused on node \"%s\" (ID: %i) with WAL replay pending; this node cannot be manually promoted until WAL replay is resumed"),
cell->node_info->node_name, cell->node_info->node_id);
}
}
repmgrd_info[i]->upstream_last_seen = get_upstream_last_seen(cell->node_info->conn, cell->node_info->type);
if (repmgrd_info[i]->upstream_last_seen < 0)
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, "%s", _("n/a"));
}
else
{
if (runtime_options.compact == true)
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, _("%i sec(s) ago"), repmgrd_info[i]->upstream_last_seen);
}
else
{
maxlen_snprintf(repmgrd_info[i]->upstream_last_seen_text, _("%i second(s) ago"), repmgrd_info[i]->upstream_last_seen);
}
}
}
initPQExpBuffer(&node_status);
initPQExpBuffer(&upstream);
(void)format_node_status(cell->node_info, &node_status, &upstream, &warnings);
snprintf(repmgrd_info[i]->pg_running_text, sizeof(cell->node_info->details),
"%s", node_status.data);
snprintf(cell->node_info->upstream_node_name, sizeof(cell->node_info->upstream_node_name),
"%s", upstream.data);
termPQExpBuffer(&node_status);
termPQExpBuffer(&upstream);
PQfinish(cell->node_info->conn);
headers_status[STATUS_NAME].cur_length = strlen(cell->node_info->node_name);
headers_status[STATUS_ROLE].cur_length = strlen(get_node_type_string(cell->node_info->type));
headers_status[STATUS_PG].cur_length = strlen(repmgrd_info[i]->pg_running_text);
headers_status[STATUS_UPSTREAM_NAME].cur_length = strlen(cell->node_info->upstream_node_name);
if (runtime_options.detail == true)
{
PQExpBufferData buf;
headers_status[STATUS_LOCATION].cur_length = strlen(cell->node_info->location);
initPQExpBuffer(&buf);
appendPQExpBuffer(&buf, "%i", cell->node_info->priority);
headers_status[STATUS_PRIORITY].cur_length = strlen(buf.data);
termPQExpBuffer(&buf);
}
headers_status[STATUS_PID].cur_length = strlen(repmgrd_info[i]->pid_text);
headers_status[STATUS_REPMGRD].cur_length = strlen(repmgrd_info[i]->repmgrd_running);
headers_status[STATUS_UPSTREAM_LAST_SEEN].cur_length = strlen(repmgrd_info[i]->upstream_last_seen_text);
for (j = 0; j < STATUS_HEADER_COUNT; j++)
{
if (headers_status[j].cur_length > headers_status[j].max_length)
{
headers_status[j].max_length = headers_status[j].cur_length;
}
}
i++;
}
/* Print column header row (text mode only) */
if (runtime_options.output_mode == OM_TEXT)
{
print_status_header(STATUS_HEADER_COUNT, headers_status);
}
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
if (runtime_options.output_mode == OM_CSV)
{
int running = repmgrd_info[i]->running ? 1 : 0;
int paused = repmgrd_info[i]->paused ? 1 : 0;
/* If PostgreSQL is not running, repmgrd status is unknown */
if (repmgrd_info[i]->pg_running == false)
{
running = -1;
paused = -1;
}
printf("%i,%s,%s,%i,%i,%i,%i,%i,%i,%s\n",
cell->node_info->node_id,
cell->node_info->node_name,
get_node_type_string(cell->node_info->type),
repmgrd_info[i]->pg_running ? 1 : 0,
running,
repmgrd_info[i]->pid,
paused,
cell->node_info->priority,
repmgrd_info[i]->pid == UNKNOWN_PID
? -1
: repmgrd_info[i]->upstream_last_seen,
cell->node_info->location);
}
else
{
printf(" %-*i ", headers_status[STATUS_ID].max_length, cell->node_info->node_id);
printf("| %-*s ", headers_status[STATUS_NAME].max_length, cell->node_info->node_name);
printf("| %-*s ", headers_status[STATUS_ROLE].max_length, get_node_type_string(cell->node_info->type));
printf("| %-*s ", headers_status[STATUS_PG].max_length, repmgrd_info[i]->pg_running_text);
printf("| %-*s ", headers_status[STATUS_UPSTREAM_NAME].max_length, cell->node_info->upstream_node_name);
if (runtime_options.detail == true)
{
printf("| %-*s ", headers_status[STATUS_LOCATION].max_length, cell->node_info->location);
printf("| %-*i ", headers_status[STATUS_PRIORITY].max_length, cell->node_info->priority);
}
printf("| %-*s ", headers_status[STATUS_REPMGRD].max_length, repmgrd_info[i]->repmgrd_running);
printf("| %-*s ", headers_status[STATUS_PID].max_length, repmgrd_info[i]->pid_text);
if (repmgrd_info[i]->pid == UNKNOWN_PID)
{
printf("| %-*s ", headers_status[STATUS_PAUSED].max_length, _("n/a"));
printf("| %-*s ", headers_status[STATUS_UPSTREAM_LAST_SEEN].max_length, _("n/a"));
}
else
{
printf("| %-*s ", headers_status[STATUS_PAUSED].max_length, repmgrd_info[i]->paused ? _("yes") : _("no"));
printf("| %-*s ", headers_status[STATUS_UPSTREAM_LAST_SEEN].max_length, repmgrd_info[i]->upstream_last_seen_text);
}
printf("\n");
}
pfree(repmgrd_info[i]);
i++;
}
pfree(repmgrd_info);
/* emit any warnings */
if (warnings.head != NULL && runtime_options.terse == false && runtime_options.output_mode != OM_CSV)
{
ItemListCell *cell = NULL;
printf(_("\nWARNING: following issues were detected\n"));
for (cell = warnings.head; cell; cell = cell->next)
{
printf(_(" - %s\n"), cell->string);
}
if (runtime_options.verbose == false && connection_error_found == true)
{
log_hint(_("execute with --verbose option to see connection error messages"));
}
}
}
void
do_daemon_pause(void)
{
_do_repmgr_pause(true);
}
void
do_daemon_unpause(void)
{
_do_repmgr_pause(false);
}
static void
_do_repmgr_pause(bool pause)
{
PGconn *conn = NULL;
NodeInfoList nodes = T_NODE_INFO_LIST_INITIALIZER;
NodeInfoListCell *cell = NULL;
int i;
int error_nodes = 0;
/* Connect to local database to obtain cluster connection data */
log_verbose(LOG_INFO, _("connecting to database"));
if (strlen(config_file_options.conninfo))
conn = establish_db_connection(config_file_options.conninfo, true);
else
conn = establish_db_connection_by_params(&source_conninfo, true);
fetch_node_records(conn, &nodes);
i = 0;
for (cell = nodes.head; cell; cell = cell->next)
{
log_verbose(LOG_DEBUG, "pausing node %i (%s)",
cell->node_info->node_id,
cell->node_info->node_name);
cell->node_info->conn = establish_db_connection_quiet(cell->node_info->conninfo);
if (PQstatus(cell->node_info->conn) != CONNECTION_OK)
{
log_warning(_("unable to connect to node %i"),
cell->node_info->node_id);
error_nodes++;
}
else
{
if (runtime_options.dry_run == true)
{
if (pause == true)
{
log_info(_("would pause node %i (%s) "),
cell->node_info->node_id,
cell->node_info->node_name);
}
else
{
log_info(_("would unpause node %i (%s) "),
cell->node_info->node_id,
cell->node_info->node_name);
}
}
else
{
bool success = repmgrd_pause(cell->node_info->conn, pause);
if (success == false)
error_nodes++;
log_notice(_("node %i (%s) %s"),
cell->node_info->node_id,
cell->node_info->node_name,
success == true
? pause == true ? "paused" : "unpaused"
: pause == true ? "not paused" : "not unpaused");
}
PQfinish(cell->node_info->conn);
}
i++;
}
if (error_nodes > 0)
{
if (pause == true)
{
log_error(_("unable to pause %i node(s)"), error_nodes);
}
else
{
log_error(_("unable to unpause %i node(s)"), error_nodes);
}
log_hint(_("execute \"repmgr daemon status\" to view current status"));
exit(ERR_REPMGRD_PAUSE);
}
exit(SUCCESS);
}
void
fetch_node_records(PGconn *conn, NodeInfoList *node_list)
{
bool success = get_all_node_records_with_upstream(conn, node_list);
if (success == false)
{
/* get_all_node_records() will display any error message */
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
if (node_list->node_count == 0)
{
log_error(_("no node records were found"));
log_hint(_("ensure at least one node is registered"));
PQfinish(conn);
exit(ERR_BAD_CONFIG);
}
}
#define REPMGR_SERVICE_STOP_START_WAIT 15
#define REPMGR_SERVICE_STATUS_START_HINT _("use \"repmgr service status\" to confirm that repmgrd was successfully started")
#define REPMGR_SERVICE_STATUS_STOP_HINT _("use \"repmgr service status\" to confirm that repmgrd was successfully stopped")
void
do_daemon_start(void)
@@ -583,12 +114,12 @@ do_daemon_start(void)
if (runtime_options.no_wait == true || runtime_options.wait == 0)
{
log_hint(REPMGR_DAEMON_STATUS_START_HINT);
log_hint(REPMGR_SERVICE_STATUS_START_HINT);
}
else
{
int i = 0;
int timeout = REPMGR_DAEMON_STOP_START_WAIT;
int timeout = REPMGR_SERVICE_STOP_START_WAIT;
if (runtime_options.wait_provided)
timeout = runtime_options.wait;
@@ -598,7 +129,7 @@ do_daemon_start(void)
if (PQstatus(conn) != CONNECTION_OK)
{
log_notice(_("unable to connect to local node"));
log_hint(REPMGR_DAEMON_STATUS_START_HINT);
log_hint(REPMGR_SERVICE_STATUS_START_HINT);
exit(ERR_DB_CONN);
}
@@ -616,7 +147,7 @@ do_daemon_start(void)
PQfinish(conn);
log_error(_("repmgrd does not appear to have started after %i seconds"),
timeout);
log_hint(REPMGR_DAEMON_STATUS_START_HINT);
log_hint(REPMGR_SERVICE_STATUS_START_HINT);
exit(ERR_REPMGRD_SERVICE);
}
@@ -712,12 +243,12 @@ void do_daemon_stop(void)
if (runtime_options.no_wait == true || runtime_options.wait == 0)
{
if (have_db_connection == true)
log_hint(REPMGR_DAEMON_STATUS_STOP_HINT);
log_hint(REPMGR_SERVICE_STATUS_STOP_HINT);
}
else
{
int i = 0;
int timeout = REPMGR_DAEMON_STOP_START_WAIT;
int timeout = REPMGR_SERVICE_STOP_START_WAIT;
/*
*
*/
@@ -732,7 +263,7 @@ void do_daemon_stop(void)
log_warning(_("unable to determine repmgrd PID"));
if (have_db_connection == true)
log_hint(REPMGR_DAEMON_STATUS_STOP_HINT);
log_hint(REPMGR_SERVICE_STATUS_STOP_HINT);
exit(ERR_REPMGRD_SERVICE);
}
@@ -764,7 +295,7 @@ void do_daemon_stop(void)
timeout);
if (have_db_connection == true)
log_hint(REPMGR_DAEMON_STATUS_START_HINT);
log_hint(REPMGR_SERVICE_STATUS_START_HINT);
exit(ERR_REPMGRD_SERVICE);
}
@@ -783,53 +314,29 @@ void do_daemon_help(void)
print_help_header();
printf(_("Usage:\n"));
printf(_(" %s [OPTIONS] daemon status\n"), progname());
printf(_(" %s [OPTIONS] daemon pause\n"), progname());
printf(_(" %s [OPTIONS] daemon unpause\n"), progname());
printf(_(" %s [OPTIONS] daemon start\n"), progname());
printf(_(" %s [OPTIONS] daemon stop\n"), progname());
puts("");
printf(_("DAEMON STATUS\n"));
puts("");
printf(_(" \"daemon status\" shows the status of repmgrd on each node in the cluster\n"));
puts("");
printf(_(" --csv emit output as CSV\n"));
printf(_(" --detail show additional detail\n"));
printf(_(" --verbose show text of database connection error messages\n"));
puts("");
printf(_("DAEMON START\n"));
puts("");
printf(_(" \"daemon start\" attempts to start repmgrd\n"));
printf(_(" \"daemon start\" attempts to start repmgrd on the local node\n"));
puts("");
printf(_(" --dry-run check prerequisites but don't start repmgrd\n"));
printf(_(" -w/--wait wait for repmgrd to start (default: %i seconds)\n"), REPMGR_DAEMON_STOP_START_WAIT);
printf(_(" -w/--wait wait for repmgrd to start (default: %i seconds)\n"), REPMGR_SERVICE_STOP_START_WAIT);
printf(_(" --no-wait don't wait for repmgrd to start\n"));
puts("");
printf(_("DAEMON STOP\n"));
puts("");
printf(_(" \"daemon stop\" attempts to stop repmgrd\n"));
printf(_(" \"daemon stop\" attempts to stop repmgrd on the local node\n"));
puts("");
printf(_(" --dry-run check prerequisites but don't stop repmgrd\n"));
printf(_(" -w/--wait wait for repmgrd to stop (default: %i seconds)\n"), REPMGR_DAEMON_STOP_START_WAIT);
printf(_(" -w/--wait wait for repmgrd to stop (default: %i seconds)\n"), REPMGR_SERVICE_STOP_START_WAIT);
printf(_(" --no-wait don't wait for repmgrd to stop\n"));
puts("");
printf(_("DAEMON PAUSE\n"));
puts("");
printf(_(" \"daemon pause\" instructs repmgrd on each node to pause failover detection\n"));
puts("");
printf(_(" --dry-run check if nodes are reachable but don't pause repmgrd\n"));
puts("");
printf(_("DAEMON UNPAUSE\n"));
puts("");
printf(_(" \"daemon unpause\" instructs repmgrd on each node to resume failover detection\n"));
puts("");
printf(_(" --dry-run check if nodes are reachable but don't unpause repmgrd\n"));
puts("");
puts("");
}