Automating custom syslog messages

saalvare — Tue, 13 Dec 2016 22:00:32 GMT

Ok, hopefully, we don't have to rely on Syslog much longer for network management, but, for the time being, let's see how to automate custom Syslog messages. Cisco IOS XR has allowed you to generate custom Syslog messages for quite some time. Historically, those messages were generated using the "logmsg" CLI command:

RP/0/RP0/CPU0:Router#logmsg ?

LINE message to be sent to syslog

RP/0/RP0/CPU0:Router#logmsg A custom syslog message

Tue Dec 13 12:42:36.213 UTC

RP/0/RP0/CPU0:Router#

RP/0/RP0/CPU0:Router#sh log | i syslog

Tue Dec 13 12:43:18.884 UTC

RP/0/RP0/CPU0:Dec 13 12:42:36.296 : logger[65705]: %OS-SYSLOG-6-LOG_INFO : A custom syslog message

RP/0/RP0/CPU0:Router#

In the world of data models, we don't want to automate this command using CLI. CIsco IOS XR 6.1.2 already specifies this command in the "Cisco-IOS-XR-syslog-act" YANG model. Now, using YDK 0.5.2 with Cisco-IOS-XR module bundle 6.1.2, you can instantiate an RPC object for this model, provide the input parameter and use the Executor service to execute the RPC. How is it done? Look at these Python sample apps:

nc-execute-xr-syslog-act-20-ydk.py - custom informational message ("A custom informational message")

RP/0/RP0/CPU0:Dec 12 16:20:37.744 : netconf[1101]: %OS-SYSLOG-6-LOG_INFO : A custom informational message

nc-execute-xr-syslog-act-22-ydk.py - custom warning message ("A custom warning message")

RP/0/RP0/CPU0:Dec 12 16:27:39.847 : netconf[1101]: %OS-SYSLOG-4-LOG_WARNING : A custom warning message

nc-execute-xr-syslog-act-24-ydk.py - custom critical message ("A custom critical message")

RP/0/RP0/CPU0:Dec 12 16:29:47.854 : netconf[1101]: %OS-SYSLOG-2-LOG_CRIT : A custom critical message

As always, you can fing a boilerplate app that you can use to create your own:

nc-execute-xr-syslog-act-10-ydk.py - execute boilerplate

Give them a try!

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Automating custom syslog messages