The server seems to be too weak to handle the load.
Could you please show the load average? (the output of the uptime
command is ok).
You can try to temporarily work around the problem by increasing the SSSD watchdog timeout:
- under your domain section of /etc/sssd/sssd.conf add
- timeout = 20
- restart sssd:
systemctl restart sssd
The real fix is to lower the load average using powerful hardware.