Returned values from system.run script? Can they be referenced in Operations?

[jmrice]

I could try something like:
{zabbix.mydomain.com:system.run[/usr/local/bin/checkissuer.sh mydomain.com 443].strlen()}>0

But the actual string value might not be available, just the number of characters.

Then, what would {{HOST.HOST}:{ITEM.KEY2}.last()} evaluate to be?

[tim.mooney]

I think in that case (if you have to use .strlen()>0 in the trigger) using {ITEM.KEY2}.last() is the correct thing to do. Give it a try.

[jmrice]

Interesting tidbit from the docs:

https://www.zabbix.com/documentation...ers/expression

Functions

Trigger functions allow to reference the collected values, current time and other factors.
A complete list of supported functions is available.
All functions return numeric values only. String comparison is not supported.
If you want string comparison, upgrade to Zabbix 5.0. <<<<<<<<<<<<<<<<<<<<< !!!

https://www.zabbix.com/documentation...ers/expression (5.0)

Functions

Trigger functions allow to reference the collected values, current time and other factors.
A complete list of supported functions is available.
Typically functions return numeric values.
However, returning strings for string comparison is also possible with = and <> operators;
see operators and trigger examples for more details.

Although, I didn't find string comparisons to be possible. We are currently running 5.0

[jmrice]

Good news!

Testing: SSL Certificate from Let's Encrypt on zabbix.mydomain.com expires in 30 days !

Thank you!

[tim.mooney]

Good news!
Testing: SSL Certificate from Let's Encrypt on zabbix.mydomain.com expires in 30 days !

Excellent. To help out the next person, will you post both the trigger expression you ended up using and the message template from the message?

[jmrice]

Trigger expression:

{zabbix.mydomain.com:system.run[/usr/local/bin/checkssl.sh mydomain.com 443].last()}<=90 and
{zabbix.mydomain.com:system.run[/usr/local/bin/checkissuer.sh mydomain.com 443].strlen()}>0

Operations message:

Problem name: {EVENT.NAME}
Severity: {EVENT.SEVERITY}
SSL Certificate from {ITEM.VALUE2} expires in {ITEM.VALUE1} days !

[jmrice]

For those that are curious, I found the checkssl.sh script at: https://medium.com/@sean_bradley/mon...x-860279519238

I modified that to make the checkissuer.sh script:

data=`echo | openssl s_client -servername $1 -connect $1:$2 2>/dev/null | openssl x509 -noout -issuer | grep -oP '^.*O=\K(.*?)(?:\/)' | awk -F/ '{print $1}'`
echo $data