I'll backport https://github.com/ceph/ceph/pull/15770 to kraken and see if that helps, even though the PR says the errors only occurred in arm64.
Nope, it's not that PR (it modifies a test that is missing in kraken), but after looking at it a little more closely I see the error is happening in test_auth_profiles. Here is the relevant log excerpt:
/home/jenkins-build/build/workspace/ceph-pull-requests/qa/workunits/cephtool/test.sh:534: test_auth_profiles: ceph -n client.xx-profile-ro -k client.xx.keyring status 2017-07-01 07:06:34.237801 7f8d48b7c700 -1 WARNING: the following dangerous and experimental features are enabled: * 2017-07-01 07:06:34.244725 7f8d48b7c700 -1 WARNING: the following dangerous and experimental features are enabled: * 2017-07-01 07:06:34.244781 7f8d48b7c700 -1 asok(0x7f8d44000b30) AdminSocketConfigObs::init: failed: AdminSocket::bind_and_listen: The UNIX domain socket path /home/jenkins-build/build/workspace/ceph-pull-requests/build/src/test/td/t-7202/out/client.xx-profile-ro.31748.asok is too long! The maximum length on this system is 107
Which happens here:https://github.com/ceph/ceph/blob/kraken/qa/workunits/cephtool/test.sh#L534
Since the Jenkins logs seem to disappear after just a couple days, I saved the entire log of test_auth_profiles here: https://paste2.org/m6vM0MY8
Any help is welcome: test_auth_profiles fails like this almost every time, so this is blocking further work on 11.2.1.
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