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daemon status: make output more like that of "cluster show"

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In particular make any issues with unexpected server state more
obvious.
This commit is contained in:
Ian Barwick
2019-04-25 14:44:41 +09:00
parent da24896fd5
commit 9fe2fa2daf
11 changed files with 397 additions and 279 deletions
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227
repmgr-action-cluster.c
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@@ -184,231 +184,10 @@ do_cluster_show(void)
initPQExpBuffer(&details);
/*
* TODO: count nodes marked as "? unreachable" and add a hint about
* the other cluster commands for better determining whether
* unreachable.
*/
switch (cell->node_info->type)
{
case PRIMARY:
{
/* node is reachable */
if (cell->node_info->node_status == NODE_STATUS_UP)
{
if (cell->node_info->active == true)
{
switch (cell->node_info->recovery_type)
{
case RECTYPE_PRIMARY:
appendPQExpBufferStr(&details, "* running");
break;
case RECTYPE_STANDBY:
appendPQExpBufferStr(&details, "! running as standby");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is registered as primary but running as standby",
cell->node_info->node_name, cell->node_info->node_id);
break;
case RECTYPE_UNKNOWN:
appendPQExpBufferStr(&details, "! unknown");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) has unknown replication status",
cell->node_info->node_name, cell->node_info->node_id);
break;
}
}
else
{
if (cell->node_info->recovery_type == RECTYPE_PRIMARY)
{
appendPQExpBufferStr(&details, "! running");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is running but the repmgr node record is inactive",
cell->node_info->node_name, cell->node_info->node_id);
}
else
{
appendPQExpBufferStr(&details, "! running as standby");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is registered as an inactive primary but running as standby",
cell->node_info->node_name, cell->node_info->node_id);
}
}
}
/* node is up but cannot connect */
else if (cell->node_info->node_status == NODE_STATUS_REJECTED)
{
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "? running");
}
else
{
appendPQExpBufferStr(&details, "! running");
error_found = true;
}
}
/* node is unreachable */
else
{
/* node is unreachable but marked active */
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "? unreachable");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is registered as an active primary but is unreachable",
cell->node_info->node_name, cell->node_info->node_id);
}
/* node is unreachable and marked as inactive */
else
{
appendPQExpBufferStr(&details, "- failed");
error_found = true;
}
}
}
break;
case STANDBY:
{
/* node is reachable */
if (cell->node_info->node_status == NODE_STATUS_UP)
{
if (cell->node_info->active == true)
{
switch (cell->node_info->recovery_type)
{
case RECTYPE_STANDBY:
appendPQExpBufferStr(&details, " running");
break;
case RECTYPE_PRIMARY:
appendPQExpBufferStr(&details, "! running as primary");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is registered as standby but running as primary",
cell->node_info->node_name, cell->node_info->node_id);
break;
case RECTYPE_UNKNOWN:
appendPQExpBufferStr(&details, "! unknown");
item_list_append_format(
&warnings,
"node \"%s\" (ID: %i) has unknown replication status",
cell->node_info->node_name, cell->node_info->node_id);
break;
}
}
else
{
if (cell->node_info->recovery_type == RECTYPE_STANDBY)
{
appendPQExpBufferStr(&details, "! running");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is running but the repmgr node record is inactive",
cell->node_info->node_name, cell->node_info->node_id);
}
else
{
appendPQExpBufferStr(&details, "! running as primary");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is running as primary but the repmgr node record is inactive",
cell->node_info->node_name, cell->node_info->node_id);
}
}
/* warn about issue with paused WAL replay */
if (is_wal_replay_paused(cell->node_info->conn, 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);
}
}
/* node is up but cannot connect */
else if (cell->node_info->node_status == NODE_STATUS_REJECTED)
{
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "? running");
}
else
{
appendPQExpBufferStr(&details, "! running");
error_found = true;
}
}
/* node is unreachable */
else
{
/* node is unreachable but marked active */
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "? unreachable");
item_list_append_format(&warnings,
"node \"%s\" (ID: %i) is registered as an active standby but is unreachable",
cell->node_info->node_name, cell->node_info->node_id);
}
else
{
appendPQExpBufferStr(&details, "- failed");
error_found = true;
}
}
}
break;
case WITNESS:
case BDR:
{
/* node is reachable */
if (cell->node_info->node_status == NODE_STATUS_UP)
{
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "* running");
}
else
{
appendPQExpBufferStr(&details, "! running");
error_found = true;
}
}
/* node is up but cannot connect */
else if (cell->node_info->node_status == NODE_STATUS_REJECTED)
{
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "? rejected");
}
else
{
appendPQExpBufferStr(&details, "! failed");
error_found = true;
}
}
/* node is unreachable */
else
{
if (cell->node_info->active == true)
{
appendPQExpBufferStr(&details, "? unreachable");
}
else
{
appendPQExpBufferStr(&details, "- failed");
error_found = true;
}
}
}
break;
case UNKNOWN:
{
/* this should never happen */
appendPQExpBufferStr(&details, "? unknown node type");
error_found = true;
}
break;
}
if (format_node_status(cell->node_info, &details, &warnings) == false)
error_found = true;
strncpy(cell->node_info->details, details.data, MAXLEN);
termPQExpBuffer(&details);
PQfinish(cell->node_info->conn);