When using SSSD, unable to login as an AD/IPA user due to "4 (System error)".

Solution Verified - Updated -

Issue

  • Unable to log into user account with SSSD due to pam_sss sshd system error
  • Following logs can be seen in secure log file during the time.
Mar 11 08:50:44 bit9 sshd[20896]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=example.com user=test
Mar 11 08:50:44 bit9 sshd[20896]: pam_sss(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=example.com user=test
Mar 11 08:50:44 bit9 sshd[20896]: pam_sss(sshd:auth): received for user test: 4 (System error)
Mar 11 08:50:46 bit9 sshd[20896]: Failed password for test from 10.x.x.x port 53832 ssh2

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • sssd

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