Programmable way to check if ConfD is up

Core Engine and APIs
1

Hello,

What is the best approach to check, from the “device” SB side, if the ConfD process is up?
Just trying to connect? or is there a different way to “ping” it via C-API ?

thanks,
Kobi

2

Hi,

You can for example use the DP API health check notification to get a reading. If you just want to do a “one-shot” test, subscribe, wait for a second for the notification with the result, and then unsubscribe.

You can use the examples.confd/misc/notifications example as a reference. Quick demo:

$ pwd
/Users/tailf/confd-7.8/examples.confd/misc/notifications

$ make all start
...
./confd_notifications -i
Waiting for event notifications...
^Cmake: *** [start] Interrupt: 2

$ ./confd_notifications
./confd_notifications usage:
    -d   (daemon log messages)
    -D   (developer log messages)
    -a   (audit log messages)
    -N   (NETCONF log messages)
    -J   (JSONRPC log messages)
    -W   (WEBUI log messages)
    -S   (SNMP log messages)
    -t   (takeover mode for syslog)
    -u   (user session messages)
    -i   (commit diff messages - iterate over commit diff)
    -f   (commit failed messages)
    -C   (confirmed-commit messages)
    -P   (commit progress messages)
    -v 'verbosity' (verbosity for progress messages - enum(normal|verbose|very-verbose|debug))
    -h   (ha information messages)
    -s   (subagent messages)
    -F   (forward information messages)
    -U   (upgrade event messages)
    -A   (all of the above)
    -H   (heartbeat messages)
    -e   (health check messages)
    -c   (commit simple messages)
    -n 'name' (notification stream event messages for stream 'name')
    -y   (make audit log synchronous)
    -Y   (make ha info synchronous)
    -r   (request confirmation before sync reply)
    -T 'interval' (interval for heartbeat / health check in seconds)
    -B 'time' (start time for notification stream - yang:date-and-time form)
    -E 'time' (stop time for notification stream - yang:date-and-time form)
    -x 'filter' (XPath filter for notification stream)
    -z 'usid' (User session id for AAA restriction on notification stream)
    -p 'port' (connect to ConfD at 'port')

$ ./confd_notifications -T 1 -e
Waiting for event notifications...
tick health check
tick health check
tick health check
^C
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