On Mon, Aug 01, 2016 at 02:35:04PM +0000, Neal Harrington | i-Neda Ltd wrote: > Hi, > > > I am experiencing slow logins and sudo authentication for servers joined to > my FreeIPA domain. I have been following the other recent thread on slow > logins and believe my issue is different. > > > I have replication setup with 2 FreeIPA servers at each of 3 sites. The > replication is working well and I am able to login correctly on client > servers with correct sudo permissions etc. Logins seem to take a long time > however. There seems to be some kind of DNS/connection timeout issues, see > the example below where the client times out on the auth01 server, then > retries and connects. I have also seen it switch to an alternate IPA server > on timeout. Total delay in this example is about 10 seconds however it can > take longer (approx 30 seconds). It is worth mentioning that client servers > in each site cannot connect to IPA servers is a different site - however in > the example below the auth01 IPA server is in the same site as the client > server. I'm not sure if there is any way to make the IPA clients site aware > so they prefer to log in to a local server? > > > On the IPA servers themselves there is no noticeable delay and once I have > authenticated with sudo once, subsequent attempts in the same login are also > near instant. I have not been able to find any reason for this delay in any > logs (which probably just means I'm not looking in the right place). > > > DNS servers are running on each IPA server and responding well whenever I > have tested. > > > IPA Servers: CentOS 7.2.1511 running IPA 4.2.0 (from standard CentOS repo) > > Client servers: Ubuntu 14.04 running IPA 3.3.4 (From standard Ubuntu repo) > > > Any comments or suggestions greatly appreciated. > > > Thanks, > > Neal. > > > Example sssd log for a "sudo -l" attempt. > > (Mon Aug 1 14:39:59 2016) [sssd[be[fqdn.com]]] [krb5_child_timeout] > (0x0040): Timeout for child [7430] reached. In case KDC is distant or > network is slow you may consider increasing value of krb5_auth_timeout. > (Mon Aug 1 14:39:59 2016) [sssd[be[fqdn.com]]] [krb5_auth_done] (0x0020): > child timed out!
These debug messages seem to be telling you what the problem is. Have you tried how long does it take to kinit (preferably with KRB5_TRACE=/dev/stderr prepended) ? -- Manage your subscription for the Freeipa-users mailing list: https://www.redhat.com/mailman/listinfo/freeipa-users Go to http://freeipa.org for more info on the project
