[Freeipa-users] Kerberos process coredump | authentication fails

[Prashant Bapat]

Hi,

We have a FreeIPA 4.1.4 setup on F21 servers. There is 1 master and 7
replicas in different regions. Earlier there was only 1 replica. Since I
added new replicas, on the master node, once in a while the kerberos
process dumps core and everything stops working - authentication,
replication etc. If we restart everything using "ipactl restart" things are
back to normal.

Attached is the output from journalctl for kerberos.

Has anyone come across this ? Are there any pointers to troubleshooting
this ?

Any help is appreciated.

Thanks.
--Prashant
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Jan 26 03:15:59 ipa.example.net systemd-coredump[5000]: Process 4475 (krb5kdc) of user 0 dumped core.

                                                       Stack trace of thread 4475:
                                                       #0  0x00007f99de8c18d7 raise (libc.so.6)
                                                       #1  0x00007f99de8c353a abort (libc.so.6)
                                                       #2  0x00007f99de8ba47d __assert_fail_base (libc.so.6)
                                                       #3  0x00007f99de8ba532 __assert_fail (libc.so.6)
                                                       #4  0x00007f99d783a78f ldap_get_values_len (libldap_r-2.4.so.2)
                                                       #5  0x00007f99d7c8173e ipadb_ldap_attr_to_int (ipadb.so)
                                                       #6  0x00007f99d7c83f9c ipadb_parse_ldap_entry (ipadb.so)
                                                       #7  0x00007f99d7c849ab ipadb_get_principal (ipadb.so)
                                                       #8  0x00007f99e0433b14 krb5_db_get_principal (libkdb5.so.7)
                                                       #9  0x000055768457c230 process_tgs_req (krb5kdc)
                                                       #10 0x0000557684579fe3 dispatch (krb5kdc)
                                                       #11 0x000055768458d8a0 process_packet (krb5kdc)
                                                       #12 0x00007f99dec4cc78 verto_fire (libverto.so.1)
                                                       #13 0x00007f99d6fb72a3 epoll_event_loop_once (libtevent.so.0)
                                                       #14 0x00007f99d6fb5787 std_event_loop_once (libtevent.so.0)
                                                       #15 0x00007f99d6fb1fed _tevent_loop_once (libtevent.so.0)
                                                       #16 0x00007f99dec4c3f7 verto_run (libverto.so.1)
                                                       #17 0x00005576845795ab main (krb5kdc)
                                                       #18 0x00007f99de8acfe0 __libc_start_main (libc.so.6)
                                                       #19 0x00005576845798f0 _start (krb5kdc)

Jan 26 03:15:59 ipa.example.net systemd-coredump[4999]: Process 4473 (krb5kdc) of user 0 dumped core.

                                                       Stack trace of thread 4473:
                                                       #0  0x00007f99de8c18d7 raise (libc.so.6)
                                                       #1  0x00007f99de8c353a abort (libc.so.6)
                                                       #2  0x00007f99de8ba47d __assert_fail_base (libc.so.6)
                                                       #3  0x00007f99de8ba532 __assert_fail (libc.so.6)
                                                       #4  0x00007f99d783a78f ldap_get_values_len (libldap_r-2.4.so.2)
                                                       #5  0x00007f99d7c8173e ipadb_ldap_attr_to_int (ipadb.so)
                                                       #6  0x00007f99d7c83f9c ipadb_parse_ldap_entry (ipadb.so)
                                                       #7  0x00007f99d7c849ab ipadb_get_principal (ipadb.so)
                                                       #8  0x00007f99e0433b14 krb5_db_get_principal (libkdb5.so.7)
                                                       #9  0x000055768457c230 process_tgs_req (krb5kdc)
                                                       #10 0x0000557684579fe3 dispatch (krb5kdc)
                                                       #11 0x000055768458d8a0 process_packet (krb5kdc)
                                                       #12 0x00007f99dec4cc78 verto_fire (libverto.so.1)
                                                       #13 0x00007f99d6fb72a3 epoll_event_loop_once (libtevent.so.0)
                                                       #14 0x00007f99d6fb5787 std_event_loop_once (libtevent.so.0)
                                                       #15 0x00007f99d6fb1fed _tevent_loop_once (libtevent.so.0)
                                                       #16 0x00007f99dec4c3f7 verto_run (libverto.so.1)
                                                       #17 0x00005576845795ab main (krb5kdc)
                                                       #18 0x00007f99de8acfe0 __libc_start_main (libc.so.6)
                                                       #19 0x00005576845798f0 _start (krb5kdc)