7.7. Downgrading SSSD

When downgrading — either downgrading the version of SSSD or downgrading the operating system itself — then the existing SSSD cache needs to be removed. If the cache is not removed, then SSSD process is dead but a PID file remains. The SSSD logs show that it cannot connect to any of its associated domains because the cache version is unrecognized.

(Wed Nov 28 21:25:50 2012) [sssd] [sysdb_domain_init_internal] (0x0010): Unknown DB version [0.14], expected [0.10] for domain AD!

Users are then no longer recognized and are unable to authenticate to domain services and hosts.

After downgrading the SSSD version:

Delete the existing cache database files.

[root@server ~]# rm -rf /var/lib/sss/db/*

Restart the SSSD process.

[root@server ~]# systemctl restart sssd.service

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