[Freeipa-users] Unable to communicate with CMS (Service Unavailable) (Solved)

[Terry John]

>On 11/12/2015 04:51 PM, Terry John wrote:
>> I got a core dump of certmonger failing user abrt but it's huge. Is there any particular part that would be useful.

>CCing Nalin and David for the core dump. More below.

> On 11/12/2015 02:17 PM, Terry John wrote:
>>> I had a working freeipa setup on a CentOS release 6.7 machine.  All was well until I did a yum update. Now I have multiple issue apparently based around the CMS (Service Unavailable) issue.
>>> My current version of ipa-server is 3.0.0-47 Certmonger crashes with
>>> a segmentation fault at boot time and crashes every time I try to restart it when ipa is running.
>
<snip>

>>>> # ipa cert-status
>>>> Request id: 20140417164153
>>>> ipa: ERROR: Certificate operation cannot be completed: Unable to
>>>> communicate with CMS (Service Unavailable) # service certmonger
>>>> status certmonger (pid  3030) is running...
>>
>>> It looks like PKI cannot be contacted. I would recommend checking /var/log/httpd/error_log, it may have more details. I would also recommend checking "ipa cert-show 1", it will probably fail with the same bug.
>> Yes ipa cert-show 1 does show the same thing # ipa cert-show 1
>> ipa: ERROR: Certificate operation cannot be completed: Unable to
>> communicate with CMS (Service Unavailable)
>>
>>> Next steps may include checking that dogtag service really runs, there is no SELinux AVC. If neither of this helps, you can check PKI logs /var/log/pki... to see what went wrong.
>> I'm pretty certain the dogtag service is not running

Then you have your lucky winner! :-)

>>> Some pointers to logs are for example here:
>>> http://www.freeipa.org/page/Troubleshooting#Server_Installation
>
>> /var/log/pki-ca/catalina.out contains the lines at boot time:


>> SEVERE: Error deploying web application directory ca
>> java.lang.UnsupportedClassVersionError: com/netscape/cms/servlet/filter/AgentRequestFilter : Unsupported major.minor version 51.0 (unable to load class com.netscape.cms.servlet.filter.AgentRequestFilter)   at  org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappC> lassLoader.java:2334).... lots of traceback
>>
>> /var/log/pki-ca/system is empty
>> /var/log/pki-ca/debug has nothing new for 2 days

>CCing Fraser. This is a wild guess, but maybe you updated your java to java-1.8.0-openjdk? PKI does not work on it on RHEL/CentOS:

>https://bugzilla.redhat.com/show_bug.cgi?id=1262516

>java would need to be switched with "alternate" to pre-1.8.0 version if this is the case.

The java version was the problem. Luckily I have a java expert to hand and explained that major.minor version 51.0 corresponds to java 7
http://stackoverflow.com/questions/9170832/list-of-java-class-file-format-major-version-numbers
When I did
# ps ax | grep java I got"
1460 ?     Sl   1:21 /usr/java/default/bin/java -Djavax.sql.Da.......
# /usr/java/default/bin/java -version
java version "1.6.0_31"
Java(TM) SE Runtime Environment (build 1.6.0_31-b04)
Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)

I have both java-1.6.0-openjdk and java-1.7.0-openjdk installed but the /usr/java/default/bin is all from java-1.6.0-openjdk

I have renamed /usr/java/default/bin/java to javaold and done
# ln -s /usr/bin/java /usr/java/default/bin/java
# /usr/java/default/bin/java -version
java version "1.7.0_91"
OpenJDK Runtime Environment (rhel-2.6.2.2.el6_7-x86_64 u91-b00)
OpenJDK 64-Bit Server VM (build 24.91-b01, mixed mode)

After a reboot FreeIPA works properly which is great but I'm wondering if there is a better fix though since all the other executables in are from the 1.6 version. I can't find a corresponding location for 1.7 executables.

Thanks very much


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