cgroup v2 CPU & memory stats for correct chart generation

[gkhandake]

cgroup v2 CPU & Memory stats for correct chart generation

• The CPU set is located at "/cpuset.cpus.effective" for cgroup v2
• Added 'file' and 'oom_kill' stats for memory chart to generate correctly

[f18m]

hey @gkhandake ,
thanks for the PR! Hope you're doing well!!
I'm going to look at this right now! :)

[f18m]

PR looks good but I think the CI pipeline is red because we need to update the expected values . IIRC when you run the tests locally you will get some "result JSON" and git contains the "expected JSON". You can basically copy-paste from the "result JSON" into the "expected JSON" whatever new fields are there... they should match the new fields you added in this PR btw :)

[gkhandake]

hey @gkhandake , thanks for the PR! Hope you're doing well!! I'm going to look at this right now! :)

Hi @f18m, thank you, I am doing good. appreciate taking this up on priority.

[gkhandake]

PR looks good but I think the CI pipeline is red because we need to update the expected values . IIRC when you run the tests locally you will get some "result JSON" and git contains the "expected JSON". You can basically copy-paste from the "result JSON" into the "expected JSON" whatever new fields are there... they should match the new fields you added in this PR btw :)

Fixed the failing unit test. thank you!

[f18m]

@gkhandake I merged this PR.
I don't remember if you need a new cmonitor version released in COPR or not...

[gkhandake]

@gkhandake I merged this PR. I don't remember if you need a new cmonitor version released in COPR or not...

Hi @f18m , Yes I need a new cmonitor version release in CORP. Can you please help with that? Appreciate your assistance.

[f18m]

@gkhandake ,
I started looking into a new release but I managed to get a successful build only for EPEL/RHEL8 and EPEL/RHEL9. Fedora versions don't build due to some issues with legacy c++11 version.
I think the best thing to do is to drop support for c+11 and switch to c++14, which means cmonitor will not support Centos/RHEL7 anymore.
I believe we're in 2024 and that makes sense.
I'm working on some other PR to get the project to compile doing a bunch of upgrades (prometheus-cpp to v 1.2.4, c++14, conan 2). I'll see how far I can get...