LinuxQuestions.org - [SOLVED] Cetos 7 login very slow

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Cetos 7 login very slow

Hi,
I have a Centos 7.2 VM and noticed that login is very slow on this, even if I login with local root account. Upon further check, it shows me some org.freedesktop.systemd1 errors and also I see lot of defunct processes, whose parent PID is 1 (systemd).
Without reboot, I am not able to clean defunct processes. Is there any other way, I should be able to fix it? Any suggestions please?

Code:

[root@centos-7-2 ~]# time ssh root@localhost id

root@localhost's password:

uid=0(root) gid=0(root) groups=0(root)



real    0m27.948s

user    0m0.013s

sys    0m0.002s

[root@centos-7-2 ~]# service nscd status

Redirecting to /bin/systemctl status  nscd.service

Failed to get properties: Activation of org.freedesktop.systemd1 timed out

[root@centos-7-2 ~]# service nscd restart

Redirecting to /bin/systemctl restart  nscd.service

Failed to restart nscd.service: Activation of org.freedesktop.systemd1 timed out

[root@centos-7-2 ~]#

[root@centos-7-2 ~]# cat /etc/ssh/sshd_config | grep -i usedns

UseDNS no

[root@centos-7-2 ~]# service sshd status

Redirecting to /bin/systemctl status  sshd.service

Failed to get properties: Activation of org.freedesktop.systemd1 timed out

[root@centos-7-2 ~]#

[root@centos-7-2 ~]# ps -ef | grep defunct | wc -l

5440

[root@centos-7-2 ~]#

I am not sure if these are two different problems, so both are related to each other

Thanks

If you're connecting from a machine on the same host / network you might find that putting an entry in /etc/hosts of the target with your source client's IP address helps. Login does some IP checks and if it can't reverse resolve the IP it can "hang" for up to 30 seconds or so when attempting login.

I am guessing this is a systemd bug. What version of systemd are you using? Run the command:
systemctl --version

Since you have defunct processes look at the output of the command:
systemctl | grep 'of user'| grep 'abandoned'

To delete sessions try running the command
rm -rf /run/systemd/system/sessionscope

To fix runtime issues try:
systemctl daemon-reexec

I had to reboot the server finally and that fixed problem