kubetail returns blank logs even when kubectl logs works OK

[pctyjkang]

Versions

os: CentOS 7

kubectl

clientVersion:
  buildDate: "2021-05-12T11:29:07Z"
  compiler: gc
  gitCommit: ac0cc736d0018d817c763083945e4db863168d12
  gitTreeState: clean
  gitVersion: v1.18.19
  goVersion: go1.13.15
  major: "1"
  minor: "18"
  platform: linux/amd64
serverVersion:
  buildDate: "2021-01-13T13:14:05Z"
  compiler: gc
  gitCommit: 73dd5c840662bb066a146d0871216333181f4b64
  gitTreeState: clean
  gitVersion: v1.18.15
  goVersion: go1.13.15
  major: "1"
  minor: "18"
  platform: linux/amd64

kubetail: 1.6.13

Issue

Need some advice on diagnosing.

kubectl logs <pod_name> seems to work okay.

However kubetail does not return any logs (though it does discover the pods). Same result for specifying just 1 pod. The buffer seems empty and when I hit ENTER it acts like stdout is hung and returns a line.

[johanhaleby]

Thanks for the issue. I don't have centos myself so it's really hard for me to debug this :/ I would gladly accept a PR (given that it doesn't break stuff for everyone else of course :)) but I'm not sure I can personally do anything about it at this moment. I have MacOSX and some of my colleagues have Ubuntu at it works well for all of us.

[gergan]

I'm hitting the same problem on MacOS it just hangs and does not show anything

[johanhaleby]

Are you piping to something?

…

Sent from my phone tors 22 feb. 2024 kl. 17:11 skrev Gergan Penkov ***@***.***>:

I'm hitting the same problem on MacOS it just hangs and does not show anything — Reply to this email directly, view it on GitHub <#122 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABNVFO252RQFWZJX7AXNADYU5UZJAVCNFSM46F6ZALKU5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TCOJVHE3TOOBWGM4A> . You are receiving this because you commented.Message ID: ***@***.***>

[gergan]

No, I wanted to but it shows only the pod names and after that it just sits there. I have now search for other tools and have installed stern, this one works - so I don't know what the problem could be. Using iTerm and zsh so pretty normal MacOS configuration

[johanhaleby]

Hmm okay. Could you do me a favor and try the very latest (unreleased) version? I.e. just copy and paste everything from the kubetail file on github to your machine. Then run your kubetail command but add "-b false" and see if that makes a difference?

…

Sent from my phone tors 22 feb. 2024 kl. 18:33 skrev Gergan Penkov ***@***.***>:

No, I wanted to but it shows only the pod names and after that it just sits there. I have now search for other tools and have installed stern, this one works - so I don't know what the problem could be. Using iTerm and zsh so pretty normal MacOS configuration — Reply to this email directly, view it on GitHub <#122 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABNVFOHYSHNPGJRDIYPAA3YU56QLAVCNFSM46F6ZALKU5DIOJSWCZC7NNSXTN2JONZXKZKDN5WW2ZLOOQ5TCOJVHE4TGNBUGI4A> . You are receiving this because you commented.Message ID: ***@***.***>

[gergan]

sorry for the late response - yes the last version on the main branch worked out of the box

[johanhaleby]

@gergan Thanks for your input. Just to be clear, it worked out of the box when you added "-b false" right? I'm thinking about whether to make this default to avoid confusion.. But I'm not sure what impact it'll have to disable buffering by default.

[gergan]

No, I mean really out of the box - I don't know what has changed, but it worked without any additional flags

[johanhaleby]

@gergan Oh okay, interesting. I should make a new release then :)