红帽全球峰会5.3. Updating the password for a Managed Service Account
Managed Service Accounts (MSAs) have a complex password that is maintained automatically by Active Directory (AD). By default, the System Services Security Daemon (SSSD) automatically updates the MSA password in the Kerberos keytab if it is older than 30 days, which keeps it up to date with the password in AD. This procedure explains how to manually update the password for your MSA.
Prerequisites
- You have previously created an MSA for a host in the production.example.com AD domain.
-
Optional: You have the
krb5-workstationpackage installed, which includes theklistdiagnostic utility.
Procedure
Optional: Display the current Key Version Number (KVNO) for the MSA in the Kerberos keytab. The current KVNO is 2.
[root@client ~]# klist -k /etc/krb5.keytab.production.example.com Keytab name: FILE:/etc/krb5.keytab.production.example.com KVNO Principal ---- ------------------------------------------------------------ 2 CLIENT!S3A$@PRODUCTION.EXAMPLE.COM (aes256-cts-hmac-sha1-96) 2 CLIENT!S3A$@PRODUCTION.EXAMPLE.COM (aes128-cts-hmac-sha1-96)Update the password for the MSA in the
production.example.comAD domain.[root@client ~]# adcli update --domain=production.example.com --host-keytab=/etc/krb5.keytab.production.example.com --computer-password-lifetime=0
Verification
Verify that you have incremented the KVNO in the Kerberos keytab:
[root@client ~]# klist -k /etc/krb5.keytab.production.example.com Keytab name: FILE:/etc/krb5.keytab.production.example.com KVNO Principal ---- ------------------------------------------------------------ 3 CLIENT!S3A$@PRODUCTION.EXAMPLE.COM (aes256-cts-hmac-sha1-96) 3 CLIENT!S3A$@PRODUCTION.EXAMPLE.COM (aes128-cts-hmac-sha1-96)
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