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daemon status: with csv output, show repmgrd status as unknown where appropriate

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Previously, if PostgreSQL was not running on the node, repmgrd and
pause status were shown as "0", implying their status was known.

This brings the csv output in line with the human-readable output,
which displays "n/a" in this case.
This commit is contained in:
Ian Barwick
2019-02-28 11:51:47 +09:00
parent 4006f8af3c
commit 0330fa6e62
2 changed files with 64 additions and 51 deletions
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101
doc/repmgr-daemon-status.sgml
View File

@@ -33,7 +33,10 @@
<command>repmgr daemon status</command> can be executed on any active node in the
replication cluster. A valid <filename>repmgr.conf</filename> file is required.
</para>
<para>
If PostgreSQL is not running on a node, &repmgr; will not be able to determine the
status of that node's <application>repmgrd</application> instance.
</para>
<note>
<para>
After restarting PostgreSQL on any node, the <application>repmgrd</application> instance
@@ -87,60 +90,60 @@
<varlistentry>
<term><option>--csv</option></term>
<listitem>
<para>
<command>repmgr daemon status</command> accepts an optional parameter <literal>--csv</literal>, which
outputs the replication cluster's status in a simple CSV format, suitable for
parsing by scripts, e.g.:
<programlisting>
<para>
<command>repmgr daemon status</command> accepts an optional parameter <literal>--csv</literal>, which
outputs the replication cluster's status in a simple CSV format, suitable for
parsing by scripts, e.g.:
<programlisting>
$ repmgr -f /etc/repmgr.conf daemon status --csv
1,node1,primary,1,1,5722,1,100,-1
2,node2,standby,1,0,-1,1,100,1
3,node3,standby,1,1,5779,1,100,1</programlisting>
</para>
<para>
The columns have following meanings:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
node ID
</simpara>
</listitem>
</para>
<para>
The columns have following meanings:
<itemizedlist spacing="compact" mark="bullet">
<listitem>
<simpara>
node ID
</simpara>
</listitem>
<listitem>
<simpara>
<listitem>
<simpara>
node name
</simpara>
</listitem>
</simpara>
</listitem>
<listitem>
<simpara>
<listitem>
<simpara>
node type (primary or standby)
</simpara>
</listitem>
</simpara>
</listitem>
<listitem>
<simpara>
<listitem>
<simpara>
PostgreSQL server running (1 = running, 0 = not running)
</simpara>
</listitem>
</simpara>
</listitem>
<listitem>
<simpara>
<application>repmgrd</application> running (1 = running, 0 = not running)
</simpara>
</listitem>
<listitem>
<simpara>
<application>repmgrd</application> running (1 = running, 0 = not running, -1 = unknown)
</simpara>
</listitem>
<listitem>
<simpara>
<application>repmgrd</application> PID (-1 if not running)
</simpara>
</listitem>
<listitem>
<simpara>
<application>repmgrd</application> PID (-1 if not running or status unknown)
</simpara>
</listitem>
<listitem>
<simpara>
<application>repmgrd</application> paused (1 = paused, 0 = not paused)
</simpara>
</listitem>
<listitem>
<simpara>
<application>repmgrd</application> paused (1 = paused, 0 = not paused, -1 = unknown)
</simpara>
</listitem>
<listitem>
<simpara>
@@ -150,25 +153,25 @@
<listitem>
<simpara>
interval in seconds since the node's upstream was last seen
interval in seconds since the node's upstream was last seen (this will be -1 if the value could not be retrieved, or the node is primary)
</simpara>
</listitem>
</itemizedlist>
</para>
</listitem>
</varlistentry>
</itemizedlist>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--verbose</option></term>
<listitem>
<para>
Display the full text of any database connection error messages
Display the full text of any database connection error messages
</para>
</listitem>
</varlistentry>
</variablelist>
</variablelist>
</refsect1>

14
repmgr-action-daemon.c
View File

@@ -260,14 +260,24 @@ do_daemon_status(void)
{
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\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,
repmgrd_info[i]->running ? 1 : 0,
running,
repmgrd_info[i]->pid,
repmgrd_info[i]->paused ? 1 : 0,
paused,
cell->node_info->priority,
repmgrd_info[i]->pid == UNKNOWN_PID
? -1