Bug 1310877
| Summary: | [RFE] Support Automatic Renewing of Kerberos Host Keytabs | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jakub Hrozek <jhrozek> |
| Component: | sssd | Assignee: | SSSD Maintainers <sssd-maint> |
| Status: | CLOSED ERRATA | QA Contact: | Steeve Goveas <sgoveas> |
| Severity: | unspecified | Docs Contact: | Marc Muehlfeld <mmuehlfe> |
| Priority: | unspecified | ||
| Version: | 7.3 | CC: | enewland, grajaiya, jhrozek, lslebodn, mkosek, mniranja, mzidek, nsoman, pbrezina, sbose, sebastian.gumprich, sgoveas, sssd-maint |
| Target Milestone: | rc | Keywords: | FutureFeature |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | sssd-1.14.0-0.1.alpha.el7 | Doc Type: | Enhancement |
| Doc Text: |
SSSD now supports automatic Kerberos host keytab renewal
Previously, the System Security Services Daemon (SSSD) did not support the automatic renewal of Kerberos host keytab files in an Active Directory (AD). In environments that, for security reasons, do not allow using passwords that never expire, the files had to be manually renewed. With this update, SSSD is able to automatically renew Kerberos host keytab files.
SSSD checks once per day if the machine account password is older than the configured number of days in the "ad_maximum_machine_account_password_age" parameter of the `/etc/sssd/sssd.conf` file.
For details, see https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html-single/System-Level_Authentication_Guide/index.html#sssd-auto-keytab-renewal
|
Story Points: | --- |
| Clone Of: | 1290761 | Environment: | |
| Last Closed: | 2016-11-04 07:16:18 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1290731, 1290761 | ||
| Bug Blocks: | 1359600 | ||
|
Comment 1
Mike McCune
2016-03-28 23:37:25 UTC
Versions: ========= sssd-krb5-common-1.14.0-21.el7.x86_64 sssd-krb5-1.14.0-21.el7.x86_64 python-sssdconfig-1.14.0-21.el7.noarch sssd-common-1.14.0-21.el7.x86_64 sssd-common-pac-1.14.0-21.el7.x86_64 sssd-ldap-1.14.0-21.el7.x86_64 sssd-proxy-1.14.0-21.el7.x86_64 sssd-ipa-1.14.0-21.el7.x86_64 sssd-1.14.0-21.el7.x86_64 sssd-client-1.14.0-21.el7.x86_64 sssd-ad-1.14.0-21.el7.x86_64 RHEL Version: ============= Red Hat Enterprise Linux Server release 7.3 Beta (Maipo) 1. Join system to Windows 2012 R2 using adcli [root@test-cloud-qe3 ~]# echo 'Secret123' | adcli join --domain=sssdad2012r2.com -U Administrator -v --stdin-password -v * Using domain name: sssdad2012r2.com * Calculated computer account name from fqdn: TEST-CLOUD-QE3 * Calculated domain realm from name: SSSDAD2012R2.COM * Discovering domain controllers: _ldap._tcp.sssdad2012r2.com * Sending netlogon pings to domain controller: ldap://[2620:52:0:83f:408a:ef53:8e36:1348] * Sending netlogon pings to domain controller: cldap://10.8.63.41 * Sending netlogon pings to domain controller: ldap://[2620:52:0:83f:5cc:7b0a:c313:8c37] * Sending netlogon pings to domain controller: cldap://10.8.63.40 * Received NetLogon info from: bsod2-bdc.sssdad2012r2.com * Wrote out krb5.conf snippet to /tmp/adcli-krb5-6A1ngg/krb5.d/adcli-krb5-conf-3R0XN8 * Authenticated as user: Administrator * Looked up short domain name: SSSDAD2012R2 * Using fully qualified name: test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Using domain name: sssdad2012r2.com * Using computer account name: TEST-CLOUD-QE3 * Using domain realm: sssdad2012r2.com * Calculated computer account name from fqdn: TEST-CLOUD-QE3 * Generated 120 character computer password * Using keytab: FILE:/etc/krb5.keytab * Computer account for TEST-CLOUD-QE3$ does not exist * Found well known computer container at: CN=Computers,DC=sssdad2012r2,DC=com * Calculated computer account: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com * Created computer account: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com * Set computer password * Retrieved kvno '2' for computer account in directory: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com * Modifying computer account: dNSHostName * Modifying computer account: userAccountControl * Modifying computer account: operatingSystem, operatingSystemVersion, operatingSystemServicePack * Modifying computer account: userPrincipalName ! Couldn't authenticate with keytab while discovering which salt to use: TEST-CLOUD-QE3$@SSSDAD2012R2.COM: Client 'TEST-CLOUD-QE3$@SSSDAD2012R2.COM' not found in Kerberos database * Added the entries to the keytab: TEST-CLOUD-QE3$@SSSDAD2012R2.COM: FILE:/etc/krb5.keytab * Added the entries to the keytab: host/TEST-CLOUD-QE3: FILE:/etc/krb5.keytab * Added the entries to the keytab: host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com: FILE:/etc/krb5.keytab * Added the entries to the keytab: RestrictedKrbHost/TEST-CLOUD-QE3: FILE:/etc/krb5.keytab * Added the entries to the keytab: RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com: FILE:/etc/krb5.keytab 2. Configure sssd.conf and set maximum machine account password age to 1 day [sssd] config_file_version = 2 domains = sssdad2012r2.com services = nss, pam [domain/sssdad2012r2.com] id_provider = ad auth_provider = ad access_provider = ad fallback_homedir = /home/%d/%u use_fully_qualified_names = True ad_maximum_machine_account_password_age = 1 ad_machine_account_password_renewal_opts = 300:15 debug_level = 9 3. Restart sssd service 4. Move the system date on RHEL7.3 and Windows system to 2 days ahead 5. sssd calls adcli to renew machine account (Fri Aug 19 02:39:47 2016) [sssd[be[sssdad2012r2.com]]] [ad_machine_account_password_renewal_done] (0x1000): --- adcli output start--- * Found realm in keytab: SSSDAD2012R2.COM * Found computer name in keytab: TEST-CLOUD-QE3 * Found service principal in keytab: host/TEST-CLOUD-QE3 * Found service principal in keytab: host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Found host qualified name in keytab: host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Found service principal in keytab: RestrictedKrbHost/TEST-CLOUD-QE3 * Found service principal in keytab: RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Using fully qualified name: test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Using domain name: sssdad2012r2.com * Calculated computer account name from fqdn: TEST-CLOUD-QE3 * Using domain realm: sssdad2012r2.com * Sending netlogon pings to domain controller: ldap://[2620:52:0:83f:5cc:7b0a:c313:8c37] * Sending netlogon pings to domain controller: cldap://10.8.63.40 * Received NetLogon info from: bsod2.sssdad2012r2.com * Wrote out krb5.conf snippet to /tmp/adcli-krb5-bgY5ed/krb5.d/adcli-krb5-conf-7lDPSN * Authenticated as default/reset computer account: TEST-CLOUD-QE3 * Looked up short domain name: SSSDAD2012R2 * Using fully qualified name: test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Using domain name: sssdad2012r2.com * Using computer account name: TEST-CLOUD-QE3 * Using domain realm: sssdad2012r2.com * Using fully qualified name: test-cloud-qe3.idmqe.lab.eng.bos.redhat.com * Enrolling computer name: TEST-CLOUD-QE3 * Generated 120 character computer password * Using keytab: FILE:/etc/krb5.keytab * Found computer account for TEST-CLOUD-QE3$ at: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com * Retrieved kvno '2' for computer account in directory: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com * Changed computer password * kvno incremented to 3 * Modifying computer account: userAccountControl ! Couldn't set userAccountControl on computer account: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com: Insufficient access * Updated existing computer account: CN=TEST-CLOUD-QE3,CN=Computers,DC=sssdad2012r2,DC=com * Discovered which keytab salt to use * Added the entries to the keytab: TEST-CLOUD-QE3$@SSSDAD2012R2.COM: FILE:/etc/krb5.keytab * Added the entries to the keytab: host/TEST-CLOUD-QE3: FILE:/etc/krb5.keytab * Added the entries to the keytab: host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com: FILE:/etc/krb5.keytab * Added the entries to the keytab: RestrictedKrbHost/TEST-CLOUD-QE3: FILE:/etc/krb5.keytab * Added the entries to the keytab: RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com: FILE:/etc/krb5.keytab ---adcli output end--- (Fri Aug 19 02:39:47 2016) [sssd[be[sssdad2012r2.com]]] [be_ptask_done] (0x0400): Task [AD machine account password renewal]: finished successfully [root@test-cloud-qe3 ~]# klist -k /etc/krb5.keytab Keytab name: FILE:/etc/krb5.keytab KVNO Principal ---- -------------------------------------------------------------------------- 2 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 2 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 2 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 2 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 2 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 2 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 2 host/TEST-CLOUD-QE3 2 host/TEST-CLOUD-QE3 2 host/TEST-CLOUD-QE3 2 host/TEST-CLOUD-QE3 2 host/TEST-CLOUD-QE3 2 host/TEST-CLOUD-QE3 2 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 RestrictedKrbHost/TEST-CLOUD-QE3 2 RestrictedKrbHost/TEST-CLOUD-QE3 2 RestrictedKrbHost/TEST-CLOUD-QE3 2 RestrictedKrbHost/TEST-CLOUD-QE3 2 RestrictedKrbHost/TEST-CLOUD-QE3 2 RestrictedKrbHost/TEST-CLOUD-QE3 2 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 2 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 3 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 3 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 3 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 3 TEST-CLOUD-QE3$@SSSDAD2012R2.COM 3 host/TEST-CLOUD-QE3 3 host/TEST-CLOUD-QE3 3 host/TEST-CLOUD-QE3 3 host/TEST-CLOUD-QE3 3 host/TEST-CLOUD-QE3 3 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 host/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 RestrictedKrbHost/TEST-CLOUD-QE3 3 RestrictedKrbHost/TEST-CLOUD-QE3 3 RestrictedKrbHost/TEST-CLOUD-QE3 3 RestrictedKrbHost/TEST-CLOUD-QE3 3 RestrictedKrbHost/TEST-CLOUD-QE3 3 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com 3 RestrictedKrbHost/test-cloud-qe3.idmqe.lab.eng.bos.redhat.com Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHEA-2016-2476.html |