Ubuntu
sssd package

Ubuntu 16.04.3 LTS 100% CPU at reboot after install

Asked by Tom Jones

I have been trying to bring up a new Ubuntu 16 LTS server attached to our AD. I have several I have installed with 14 LTS and one with 16 LTS so I know it can be done but every time I make a new server fully updated and apt install sssd the system halts mid boot and my vsphere server shows that the CPU is pegged at 100%. I have tried waiting but after 1 hour so far I have just been killing it and starting over.

This is just post install with out even attempting to join the system so there is not even a configuration file. If I avoid rebooting I can most of the time get to the point of being joined but eventually the race condition occurs and once I reboot it is pretty much sure to happen before getting to a login prompt. I am attempting an install with ubuntu 17 to see if I can get farther but I obviously would rather use 16 LTS.

Thanks,

Tom

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Tom Jones (vtjones) said : 		#1

I just tried with a clean 17 and it hit the CPU race condition while configuring SSSD

Hung at:
Creating SSSD system user & group
adduser: Warning: The home directory '/var/lib/sss' does not belong to the user you are currently creating
some other stuff and then:
Warning: found usr.sbin.sssd in /etc/apparmor.d/force-complain, forcing complain mode
Wanring failed to create cache: usr.sbin.sssd

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actionparsnip (andrew-woodhead666) said : 		#2

Are there any bugs reported about this?

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Tom Jones (vtjones) said : 		#3

Not that I could find, at least none that looked similar to me.

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actionparsnip (andrew-woodhead666) said : 		#4

Is the time accurate on the system in comparison to the AD server and in the right time zone?
https://stackoverflow.com/questions/46633321/freeipa-client-sssd-service-warning-failure

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actionparsnip (andrew-woodhead666) said : 		#5

https://bugs.launchpad.net/ubuntu/+source/sssd/+bug/1489378

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Tom Jones (vtjones) said : 		#6

I have fixed the hostname, hosts file and setup ntp before installing.

I am installing:
apt install krb5-user samba sssd sssd-tools adcli

Some of time they all get installed and configured (though sssd always throws some errors) and then at some point later the system goes unresponsive, on a reboot I can pretty much guarantee a failure every time.

I do not think that bug is right as on the ubuntu 17 server I just tried it is installing sssd 1.15.3-2ubuntu and that bug was for 2015 and version 1.13. I appreciate the responses and I will continue to play and post more information here. :-)

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actionparsnip (andrew-woodhead666) said : 		#7

Does updating the file stated in the bug help any?

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Launchpad Janitor (janitor) said : 		#8

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.