troubleshooting.md: added #19 not enough ids

[nitrocode]

#3421 (comment)

[openshift-ci-robot]

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[giuseppe]

one comment left.

Also, please sign your commit with git commit --amend -s and push it again

[giuseppe]

this won' be enough if there are no IDs added for the user.

I think we should document that additional IDs must be provided through the /etc/subuid and /etc/subgid files.

[nitrocode]

What additional content would you recommend? I can provide the outputs of those files at the very least.

$ cat /etc/subgid 
user:100000:65536
$ cat /etc/subuid
user:100000:65536

[giuseppe]

I think we can add the example you just showed, and also warn the user about overlapping ranges. The IDs specified in these file must be unique for each user.

I'd also add a pointer to the subuid(5) and subgid(5) man pages.

[rhatdan]

@nitrocode you need to sign your PRs.

git commit -a --amend -s
git push --force

[TomSweeneyRedHat]

#4614 just beat you to the punch with a separate update. Please rebase and change this to ### 19)

[rh-atomic-bot]

☔ The latest upstream changes (presumably #4614) made this pull request unmergeable. Please resolve the merge conflicts.

[TomSweeneyRedHat]

/approve

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nitrocode, ssbarnea, TomSweeneyRedHat

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[TomSweeneyRedHat]

Looks like you need to rebase still @nitrocode

[nitrocode]

I bumped #18 to #19 and added links to subuid and subgid man pages.

[TomSweeneyRedHat]

@nitrocode were you able to sign your commit? @giuseppe do the new changes cover your concerns?

[nitrocode]

Aw I forgot. I'll sign them again tonight when I'm home.

[nitrocode]

Sorry for the delay. I signed the commit and force pushed.

[TomSweeneyRedHat]

Thanks @nitrocode . @giuseppe PTAL and merge if it LGTY
LGTM

[giuseppe]

/lgtm