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repmgr node status: add information about current LSN locations for streaming standbys

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This commit is contained in:
Ian Barwick
2017-07-31 09:37:06 +09:00
committed by Ian Barwick
parent d00cb63179
commit 8a5665a421
3 changed files with 122 additions and 8 deletions
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44
repmgr-action-node.c
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@@ -28,12 +28,15 @@ do_node_status(void)
ItemList warnings = { NULL, NULL };
RecoveryType recovery_type;
ReplInfo replication_info = T_REPLINFO_INTIALIZER;
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);
server_version_num = get_server_version(conn, NULL);
if (runtime_options.node_id != UNKNOWN_NODE_ID)
target_node_id = runtime_options.node_id;
else
@@ -157,6 +160,43 @@ do_node_status(void)
"disabled");
}
// if standby (and in recovery), show:
// upstream
// -> check if matches expected; parse recovery.conf for < 9.6 (must be superuser),
// otherwise use pg_stat_wal_receiver
// streaming/in archive recovery/disconnected
// last received
// last replayed
// lag if streaming, or if in recovery can compare with upstream
if (node_info.type == STANDBY)
{
get_replication_info(conn, &replication_info);
key_value_list_set_format(
&node_status,
"Last received LSN",
"%X/%X", format_lsn(replication_info.last_wal_receive_lsn));
key_value_list_set_format(
&node_status,
"Last replayed LSN",
"%X/%X", format_lsn(replication_info.last_wal_replay_lsn));
}
else
{
key_value_list_set(
&node_status,
"Last received LSN",
"");
key_value_list_set(
&node_status,
"Last replayed LSN",
"");
}
initPQExpBuffer(&output);
if (runtime_options.csv == true)
@@ -176,7 +216,7 @@ do_node_status(void)
/* we'll add the raw data as well */
appendPQExpBuffer(
&output,
"max_walsenders,occupied_walsenders,max_replication_slots,active_replication_slots,inactive_replaction_slots\n");
"\"max_walsenders\",\"occupied_walsenders\",\"max_replication_slots\",\"active_replication_slots\",\"inactive_replaction_slots\"\n");
/* output data */
appendPQExpBuffer(
@@ -212,7 +252,7 @@ do_node_status(void)
{
appendPQExpBuffer(
&output,
"\t%s: %s\n", cell->key, cell->value);
"\t%s: %s\n", cell->key, cell->value);
}
}