DRBD Status Monitoring Example

[virer]

My example of DRBD Status Monitoring :

/etc/zabbix/zabbix_agentd.conf:
...
UserParameter=custom.vfs.drbd.status,sed '1,/.*/d;/^$/d' /proc/drbd | egrep -vc '(UpToDate/UpToDate|ns:.+nr:.+dw:.+dr:.+)'

+ attached xml file for the template to be import

feedback are welcome

Edit: Aaah thanks Frater for the optimization

[frater]

This does exactly the same.

UserParameter=vfs.drbd.status, sed '1,/.*/d;/^$/d' /proc/drbd | egrep -vc '(UpToDate/UpToDate|ns:.+nr:.+dw:.+dr:.+)'

It can probably be done better if I knew exactly how /proc/drbd behaves.

1. 'cat' is almost always superfluous
2. + means 1 or more, * means 0 or more (doesn't make much difference here, but is good practice)
3. wc -l can often be avoided
4. egrep can take an extended regular expression and can count as well
5. sed expressions can be separated by a semicolon

[frater]

I am so confused about it.

Maybe because the OP edited his first post.... (which he shouldn't do, really).

The OP had a different line there (I should have quoted him) and I gave feedback on it.

I think it was (doing some 'reverse engineering'):

cat /proc/drbd | sed -e '1,/.*/d' -e '/^$/d' | egrep -v '(UpToDate/UpToDate|ns:.*nr:.*dw:.*dr:.*)' | wc -l

I changed it into:

sed '1,/.*/d;/^$/d' /proc/drbd | egrep -vc '(UpToDate/UpToDate|ns:.+nr:.+dw:.+dr:.+)'

[lenkami15]

wo..I am finding this code
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