node_exporter --version not an easy way to grep the version for further autom. processing

[jobenvil]

node_exporter --version output is not possible either to grep nor to pipe to a file.

Usecase: run automatical node_exporter update depending on the outputed version and the latest GitHub release.

Is there an insider way to retrieve the node_exporter version like just 1.1.2?

output of node_exporter --version

node_exporter, version 1.1.2 (branch: HEAD, revision: b597c1244d7bef49e6f3359c87a56dd7707f6719) build user: root@f07de8ca602a build date: 20210305-09:29:10 go version: go1.15.8 platform: linux/amd64

[jobenvil]

OK, the trick is to pipe output instead of to error, to the terminal. A colleague of me, expert in golang, told me the issue.

node_exporter --version 2>&1 ...

[Julien Pivotto]

In 1.2.0 it is not needed to do the resurrection anymore.

Regards,

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[jobenvil]

Great, thanks for the feedback and super, that version 1.2.0 has improved that 👍

[Johannes Ziemke]

fwiw, there is also the node_exporter_build_info metric you can use to check/automate your updates