Confluence stopped responding

[Aliva Conf]

Just noticed that the confluence web page stopped responding.

Here is a few troubleshooting I have done.

1. Reboot server. > No luck
2. Restart confluence service. > this will generate pid and catalina.out log has no error.

# sh -x ./confluence start
+ cd /opt/atlassian/confluence/bin
+ case "$1" in
+ ./start-confluence.sh

To run Confluence in the foreground, start the server with start-confluence.sh -fg
executing using dedicated user: confluence
If you encounter issues starting up Confluence, please see the Installation guide at http://confluence.atlassian.com/display/DOC/Confluence+Installation+Guide

Server startup logs are located in /opt/atlassian/confluence/logs/catalina.out
---------------------------------------------------------------------------
Using Java: /opt/atlassian/confluence/jre//bin/java
2018-02-05 10:28:31,612 INFO [main] [atlassian.confluence.bootstrap.SynchronyProxyWatchdog] A Context element for ${confluence.context.path}/synchrony-proxy is found in /opt/atlassian/confluence/conf/server.xml. No further action is required
---------------------------------------------------------------------------
Using CATALINA_BASE: /opt/atlassian/confluence
Using CATALINA_HOME: /opt/atlassian/confluence
Using CATALINA_TMPDIR: /opt/atlassian/confluence/temp
Using JRE_HOME: /opt/atlassian/confluence/jre/
Using CLASSPATH: /opt/atlassian/confluence/bin/bootstrap.jar:/opt/atlassian/confluence/bin/tomcat-juli.jar
Using CATALINA_PID: /opt/atlassian/confluence/work/catalina.pid
Tomcat started.

3. tcp 8090 is listening and when you browse http://192.168.0.43:8090 it says ESTABLISHED.
However the browser says ;
-------------------------------------

This 192.168.0.43 page can’t be found

No webpage was found for the web address: http://192.168.0.43:8090/

• Search Google for 192 168 8090

HTTP ERROR 404
-------------------------------------

Here is the netstat result and catalina.out says nothing.
# netstat -na | grep 8090
tcp 0 0 :::8090 :::* LISTEN
tcp 454 0 ::ffff:192.168.0.43:8090 ::ffff:192.168.0.107:58072 ESTABLISHED

4. No specific logs in /opt/atlassian/confluence/logs/atlassian-synchrony-proxy.log
atlassian-synchrony-proxy.log is empty.

5. 404 is page doesn't exist but we haven't change setting such as web.xml and server.xml so webroot missing or wrong directory won't be the case.

6. df -m shows no problems on sizing, top shows stable usage.

Any suggestion?

Env info:
# cat /etc/redhat-release
CentOS release 6.9 (Final)
We are using SQL Server as a DB.
We installed the confluence on Sep 2017 the latest version at that time.
* Not sure on how to check the version on Linux cmd.

[Shannon S]

Hello,

This will require deeper troubleshooting and a copy of your logs, so I have created a support ticket for you in our system using your email address on file here.

Please check your email for the ticket number. Someone from the Confluence Support Team will be responding shortly but please feel free to share any relevant log files directly to the support ticket.

As soon as your issue is resolved, you can feel free to share the resolution here as it will help future users with the same issue.

Regards,

Shannon