<div dir="ltr"><div class="gmail_default" style="color:rgb(102,102,102)">Hello Everyone</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">I recently lost the master master IPA server setup by the previous administrator. </div><div class="gmail_default" style="color:rgb(102,102,102)">As it stands now, if I try to add a new client, in order to standup a new replica, I get errors while trying to setup DNS. This led me to look at how authentication worked (I'm new to IPA) and I learned about the kerberos tools</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">I don't know if I'm familiar enough with the terminology to adequately describe what I'm experiencing, so I'll give you some of the commands and their results</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">but first, a bit on the design</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">before I got to this, we had</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">a <-> b <-> c <-> d</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">b was the master master</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">a, happened to point to two test servers nyc02ipa01 and nyc02ipa02 (not pictured, I discovered them later when c and d started having problems)</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">a - nyc01ipa02</div><div class="gmail_default" style="color:rgb(102,102,102)">b - nyc01ipa01</div><div class="gmail_default" style="color:rgb(102,102,102)">c - ld4ipa01</div><div class="gmail_default" style="color:rgb(102,102,102)">d - ld4ipa02</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)">currently, I have nyc02ipa02 <-> nyc01ipa02<br></div><div class="gmail_default" style="color:rgb(102,102,102)"> </div><div class="gmail_default" style="color:rgb(102,102,102)">the reason I have it limited like this is because all the other servers stopped replicating for one reason or another (mainly that they can't authenticate or in one case, there was a database record corruption)</div><div class="gmail_default" style="color:rgb(102,102,102)"> </div><div class="gmail_default" style="color:rgb(102,102,102)">Anyway, here are some activities and logs from the latest round of fixes and information activities I've been engaging in</div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)"><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">22:54:32 root@nyc01ipa02:~# kinit admin<br>kinit: Clients credentials have been revoked while getting initial credentials</p><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">Reading through <a href="http://web.mit.edu/Kerberos/krb5-1.13/doc/admin/lockout.html" class="external-link" rel="nofollow" style="color:rgb(53,114,176);text-decoration:none">this</a> tells me that</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px;font-family:arial,sans-serif;font-size:14px"><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace"># kadmin: modprinc -unlock PRINCNAME</pre></blockquote><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">will unlock an account...but if I can't get in....</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px;font-family:arial,sans-serif;font-size:14px"><p style="margin:0px;padding:0px">22:54:37 root@nyc01ipa02:~# kadmin<br>Authenticating as principal root/admin@MF with password.<br>kadmin: Client 'root/admin@MF' not found in Kerberos database while initializing kadmin interface</p></blockquote><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">on ld4ipa02, did a</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px;font-family:arial,sans-serif;font-size:14px"><p style="margin:0px;padding:0px"># ipa-client-install --uninstall </p></blockquote><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">then </p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px;font-family:arial,sans-serif;font-size:14px"><p style="margin:0px;padding:0px"># ipa-client-install --force-join --enable-dns-updates --permit -f --ssh-trust-dns --request-cert --automount-location=LD4 --enable-dns-updates</p></blockquote><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">DNS did not update, here is the relevant portion from /var/log/ipaclient-install.log</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px;font-family:arial,sans-serif;font-size:14px"><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">2017-02-20T18:46:49Z DEBUG Writing nsupdate commands to /etc/ipa/.dns_update.txt:<br>2017-02-20T18:46:49Z DEBUG debug</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">update delete ld4ipa02.mf. IN A<br>show<br>send</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">update delete ld4ipa02.mf. IN AAAA<br>show<br>send</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">update add ld4ipa02.mf. 1200 IN A 10.102.100.140<br>show<br>send</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">2017-02-20T18:46:49Z DEBUG Starting external process<br>2017-02-20T18:46:49Z DEBUG args=/usr/bin/nsupdate -g /etc/ipa/.dns_update.txt<br>2017-02-20T18:46:49Z DEBUG Process finished, return code=1<br>2017-02-20T18:46:49Z DEBUG stdout=Outgoing update query:<br>;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id: 0<br>;; flags:; ZONE: 0, PREREQ: 0, UPDATE: 0, ADDITIONAL: 0<br>;; UPDATE SECTION:<br>ld4ipa02.mf. 0 ANY A</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">2017-02-20T18:46:49Z DEBUG stderr=Reply from SOA query:<br>;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34702<br>;; flags: qr aa rd ra; QUESTION: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0<br>;; QUESTION SECTION:<br>;ld4ipa02.mf. IN SOA</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">;; AUTHORITY SECTION:<br>mf. 1800 IN SOA ld4ipa01.mf. hostmaster.mf. 1487615509 3600 900 1209600 3600</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">Found zone name: mf<br>The master is: ld4ipa01.mf<br>start_gssrequest<br>tkey query failed: GSSAPI error: Major = Unspecified GSS failure. Minor code may provide more information, Minor = Server DNS/ld4ipa01.mf@MF not found in Kerberos database.</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace">2017-02-20T18:46:49Z DEBUG nsupdate failed: Command '/usr/bin/nsupdate -g /etc/ipa/.dns_update.txt' returned non-zero exit status 1<br>2017-02-20T18:46:49Z ERROR Failed to update DNS records.<br>2017-02-20T18:46:49Z DEBUG DNS resolver: Query: ld4ipa02.mf IN A<br>2017-02-20T18:46:49Z DEBUG DNS resolver: No record.<br>2017-02-20T18:46:49Z DEBUG DNS resolver: Query: ld4ipa02.mf IN AAAA<br>2017-02-20T18:46:49Z DEBUG DNS resolver: No record.<br>2017-02-20T18:46:49Z DEBUG DNS resolver: Query: <a href="http://140.100.102.10.in-addr.arpa/" class="external-link" rel="nofollow" style="color:rgb(53,114,176);text-decoration:none">140.100.102.10.in-addr.arpa</a>. IN PTR<br>2017-02-20T18:46:49Z DEBUG DNS resolver: No record.<br>2017-02-20T18:46:49Z WARNING Missing A/AAAA record(s) for host ld4ipa02.mf: 10.102.100.140.<br>2017-02-20T18:46:49Z WARNING Missing reverse record(s) for address(es): 10.102.100.140.</pre></blockquote><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">Why isn't there an entry for "DNS/ld4ipa01.mf@MF" in the Kerberos database?</p><p style="margin:10px 0px 0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px">klist -ktK /etc/dirsrv/ds.keytab on ld4ipa01 returns</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px;font-family:arial,sans-serif;font-size:14px"><p style="margin:0px;padding:0px">Keytab name: <a href="http://file/etc/dirsrv/ds.keytab" class="external-link" rel="nofollow" style="color:rgb(53,114,176);text-decoration:none">FILE:/etc/dirsrv/ds.keytab</a><br>KVNO Timestamp Principal<br>---- ------------------- ------------------------------------------------------<br>2 11/17/2016 20:38:39 ldap/ld4ipa01.mf@MF (0x696a502bc73d209acdd36c42242f7f8aff9dbba1073b34ea018ed3bd9cdfd970)<br>2 11/17/2016 20:38:39 ldap/ld4ipa01.mf@MF (0xe031464b6948ea34f4291d40fca7a21e)<br>2 11/17/2016 20:38:39 ldap/ld4ipa01.mf@MF (0xe94a1c98fe79b6317901435d9e9e0257cefe438ff2ec527f)<br>2 11/17/2016 20:38:39 ldap/ld4ipa01.mf@MF (0x6aaf4c7fa6b51b9de032b7c6428307b5)<br>2 11/17/2016 20:38:39 ldap/ld4ipa01.mf@MF (0x5e0702f44aef9e0633e09eede7ca8041)<br>2 11/17/2016 20:38:39 ldap/ld4ipa01.mf@MF (0x6e3a9d29ee3f129a156ae6228ab7728df8ce5de923a61eba6a2e7802b8d230b6)</p></blockquote></div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div><div class="gmail_default" style="color:rgb(102,102,102)"><div id="gmail-main-content" class="gmail-wiki-content" style="margin:0px;padding:0px;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px"><p style="margin:10px 0px 0px;padding:0px">Tried to test connectivity using ldapsearch found that I could connect to other hosts on 389 but not 636</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px"><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace"># ldapsearch -H <a rel="nofollow" style="color:rgb(53,114,176);text-decoration:none">ldap://nyc02ipa02:389</a> -D "cn=directory manager" -W -b "" -s base</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace"># ldapsearch -H <a rel="nofollow" style="color:rgb(53,114,176);text-decoration:none">ldaps://nyc02ipa02:</a>686 -D "cn=directory manager" -W -b "" -s base</pre></blockquote><p style="margin:10px 0px 0px;padding:0px">Testing the kvno</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px"><p style="margin:0px;padding:0px">02:10:00 root@ld4ipa01:~# kvno DNS/ld4ipa01.mf@MF<br>DNS/ld4ipa01.mf@MF: kvno = 2</p><p style="margin:10px 0px 0px;padding:0px">02:10:52 root@ld4ipa02:~# kvno DNS/ld4ipa01.mf@MF<br>kvno: Server DNS/ld4ipa01.mf@MF not found in Kerberos database while getting credentials for DNS/ld4ipa01.mf@MF</p></blockquote><p style="margin:10px 0px 0px;padding:0px">Add this to any command line to get debug on kerberos commands</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px"><p style="margin:0px;padding:0px">KRB5_TRACE=/dev/stdout kvno DNS/ld4ipa01.mf@MF</p></blockquote><p style="margin:10px 0px 0px;padding:0px">So, looking at the debug<br>kvno from ld4ipa02, does not return tickets. It does this because it contacts the KDC which is nyc02ipa02, and nyc02ipa02 does not recognize ldipa02 as an IPA server. It doesn't recognize ld4ipa01 either.</p><p style="margin:10px 0px 0px;padding:0px"> </p><p style="margin:10px 0px 0px;padding:0px">right now, if I try to connect nyc02ipa02 to ld4ipa01 I get</p><blockquote style="margin:10px 0px 0px 19px;border-left:1px solid rgb(57,71,44);color:rgb(112,112,112);padding:10px 20px"><p style="margin:0px;padding:0px">21:56:27 root@nyc02ipa02:~# ipa topologysegment-add domain ld4ipa01-to-nyc02ipa02 --leftnode ld4ipa01.mf --rightnode nyc02ipa02.mf<br>ipa: ERROR: invalid 'leftnode': left node is not a topology node: ld4ipa01.mf</p></blockquote></div><div id="gmail-likes-and-labels-container" style="margin:10px 0px;padding:10px 0px;overflow:hidden;clear:both;color:rgb(51,51,51);font-family:arial,sans-serif;font-size:14px"><pre style="margin-top:0px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace;color:rgb(112,112,112)">ipa privilege-show 'DNS Servers' --all --raw</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace;color:rgb(112,112,112)"> dn: cn=DNS Servers,cn=privileges,cn=pbac,dc=mf<br> cn: DNS Servers<br> description: DNS Servers<br> member: krbprincipalname=DNS/nyc01ipa02.mf@MF,cn=services,cn=accounts,dc=mf<br> member: krbprincipalname=ipa-dnskeysyncd/nyc01ipa02.mf@MF,cn=services,cn=accounts,dc=mf<br> member: krbprincipalname=DNS/nyc02ipa02.mf@MF,cn=services,cn=accounts,dc=mf<br> member: krbprincipalname=ipa-dnskeysyncd/nyc02ipa02.mf@MF,cn=services,cn=accounts,dc=mf<br> member: krbprincipalname=ipa-ods-exporter/nyc01ipa02.mf@MF,cn=services,cn=accounts,dc=mf<br> memberof: cn=System: Read DNS Configuration,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Write DNS Configuration,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Add DNS Entries,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Manage DNSSEC keys,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Manage DNSSEC metadata,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Read DNS Entries,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Remove DNS Entries,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Update DNS Entries,cn=permissions,cn=pbac,dc=mf<br> memberof: cn=System: Read DNS Servers Configuration,cn=permissions,cn=pbac,dc=mf<br> objectClass: top<br> objectClass: groupofnames<br> objectClass: nestedgroup</pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace;color:rgb(112,112,112)"><br></pre><pre style="margin-top:10px;margin-bottom:0px;padding:0px;font-family:confluenceinstalledfont,monospace;color:rgb(112,112,112)"><br></pre><div id="gmail-likes-section" style="margin:0px;padding:0px;float:left;font-size:13px;width:1156.8px"></div></div></div><div class="gmail_default" style="color:rgb(102,102,102)"><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Aaron Young<br>MarketFactory, Manager of Site Reliability Engineering<div>425 Broadway, 3FL</div><div>New York, NY 10013<br>Office: +1 212 625 9988</div><div>Direct +1 646 779 3710</div><div><span style="font-size:12.8px">US Support: </span><a href="tel:%2B1%20%28212%29%20625-0688" value="+12126250688" style="color:rgb(17,85,204);font-size:12.8px" target="_blank">+1 (212) 625-0688</a><span style="font-size:12.8px"> | UK Support: </span><a href="tel:%2B44%20%280%29%20203%20695-7997" value="+442036957997" style="color:rgb(17,85,204);font-size:12.8px" target="_blank">+44 (0) 203 695-7997</a><span style="font-size:12.8px"> </span><br></div></div></div></div></div></div></div></div></div></div></div></div></div> </div>