[Freeipa-users] Failed ipa-client-install with IPA Replica

[David Kupka]

On 13/12/16 05:44, beeth beeth wrote:
> I have two IPA servers ipaprd1.example.com and ipaprd2.example.com, running
> ipa 4.4 on RHEL7. When I tried to install/configure the client on a RHEL6
> system(called ipadev6), I had issue when I tried to enroll it with the
> replica(ipaprd2), while no issue with the primary(ipaprd1):
>
> # ipa-client-install --domain=ipa.example.com --server=ipaprd1.example.com
> --server=ipaprd2.example.com --hostname=ipadev6.example.com
> LDAP Error: Protocol error: unsupported extended operation
> Autodiscovery of servers for failover cannot work with this configuration.
> If you proceed with the installation, services will be configured to always
> access the discovered server for all operations and will not fail over to
> other servers in case of failure.
> Proceed with fixed values and no DNS discovery? [no]
>
> Then I tried to run ipa-client-install to enroll with the replica(ipaprd2),
> with debug mode, I got this:
>
> # ipa-client-install --domain=ipa.example.com --server=ipaprd2.example.com
>  --hostname=ipadev6.example.com -d
> /usr/sbin/ipa-client-install was invoked with options: {'domain': '
> ipa.example.com', 'force': False, 'realm_name': None,
> 'krb5_offline_passwords': True, 'primary': False, 'mkhomedir': False,
> 'create_sshfp': True, 'conf_sshd': True, 'conf_ntp': True, 'on_master':
> False, 'ntp_server': None, 'nisdomain': None, 'no_nisdomain': False,
> 'principal': None, 'hostname': 'ipadev6.example.com', 'no_ac': False,
> 'unattended': None, 'sssd': True, 'trust_sshfp': False, 'kinit_attempts':
> 5, 'dns_updates': False, 'conf_sudo': True, 'conf_ssh': True, 'force_join':
> False, 'ca_cert_file': None, 'server': ['ipaprd2.example.com'],
> 'prompt_password': False, 'permit': False, 'debug': True, 'preserve_sssd':
> False, 'uninstall': False}
> missing options might be asked for interactively later
> Loading Index file from '/var/lib/ipa-client/sysrestore/sysrestore.index'
> Loading StateFile from '/var/lib/ipa-client/sysrestore/sysrestore.state'
> [IPA Discovery]
> Starting IPA discovery with domain=ipa.example.com, servers=['
> ipaprd2.example.com'], hostname=ipadev6.example.com
> Server and domain forced
> [Kerberos realm search]
> Search DNS for TXT record of _kerberos.ipa.example.com.
> No DNS record found
> Search DNS for SRV record of _kerberos._udp.ipa.example.com.
> No DNS record found
> SRV record for KDC not found! Domain: ipa.example.com
> [LDAP server check]
> Verifying that ipaprd2.example.com (realm None) is an IPA server
> Init LDAP connection with: ldap://ipaprd2.example.com:389
> LDAP Error: Protocol error: unsupported extended operation
> Discovery result: UNKNOWN_ERROR; server=None, domain=ipa.example.com,
> kdc=None, basedn=None
> Validated servers:
> will use discovered domain: ipa.example.com
> IPA Server not found
> [IPA Discovery]
> Starting IPA discovery with domain=ipa.example.com, servers=['
> ipaprd2.example.com'], hostname=ipadev6.example.com
> Server and domain forced
> [Kerberos realm search]
> Search DNS for TXT record of _kerberos.ipa.example.com.
> No DNS record found
> Search DNS for SRV record of _kerberos._udp.ipa.example.com.
> No DNS record found
> SRV record for KDC not found! Domain: ipa.example.com
> [LDAP server check]
> Verifying that ipaprd2.example.com (realm None) is an IPA server
> Init LDAP connection with: ldap://ipaprd2.example.com:389
> LDAP Error: Protocol error: unsupported extended operation
> Discovery result: UNKNOWN_ERROR; server=None, domain=ipa.example.com,
> kdc=None, basedn=None
> Validated servers:
> Failed to verify that ipaprd2.example.com is an IPA Server.
> This may mean that the remote server is not up or is not reachable due to
> network or firewall settings.
> Please make sure the following ports are opened in the firewall settings:
>      TCP: 80, 88, 389
>      UDP: 88 (at least one of TCP/UDP ports 88 has to be open)
> Also note that following ports are necessary for ipa-client working
> properly after enrollment:
>      TCP: 464
>      UDP: 464, 123 (if NTP enabled)
> (ipaprd2.example.com: Provided as option)
> Installation failed. Rolling back changes.
> IPA client is not configured on this system.
>
>
> I double checked the services running on the replica, all looked well:
> ports are listening, and I could telnet the ports from the client(ipadev6).
> I could run "ldapserach" command to talk to the replica(ipaprd2) from this
> client(ipadev6), with pulling out all the LDAP records.
>
> Also, I have another test box running RHEL7, and no issue at all to run the
> exact same ipa-client-install command on that RHEL7 box. So could there be
> a bug on the ipa-client software on RHEL6, to talk to IPA sever running on
> RHEL7? Please advise. Thank you!
>
> Best regards,
> Beeth
>
>
>
Hello Beeth,
I've tried to reproduce the problem you described with 7.3 (ipa-server 
4.4.0-12) on master and replica and 6.9 (ipa-client 3.0.0-51) on client 
and it worked for me as expected.
I've done these steps:
[master] # ipa-server-install -a Secret123 -p Secret123 --domain 
example.test --realm EXAMPLE.TEST --setup-dns --auto-forwarders -U
[replica] # ipa-client-install -p admin -w Secret123 --domain 
example.test --server master.example.test -U
[replica] # ipa-replica-install
[client] # ipa-client-install -p admin -w Secret123 --domain 
example.test --server replica.example.test -U
[client] # id admin

Is there anything you've done differently?

-- 
David Kupka