We run Confluence Server on 2012 R2 and it was running smoothly until we upgraded from 6.15.8 to 7.0.1.
After the upgrade we encountered the following issues:
Resolved: The top bar was failing to load and in it's place was code. We followed an article about reloading plugins and it resolved the issue for us.
https://confluence.atlassian.com/confkb/how-to-reset-all-confluence-plugins-back-to-their-default-state-through-the-database-859509873.html
Unresolved: when Confluence was started back up and I was at the login screen, everything seemed to be running smoothly. I could browser our public articles and there would be no irregular delays loading the page. However, after I logged in, I noticed significant delay in navigating from page to page (over a minute each time).
I started looking around in the logs and found a few different logs but I was unable to ascertain what the connection between the logs are or what underlying issue is causing the delays.
Here are some of the logs:
From {service-name}-stderr.{today's-date}.log in confluence\logs\
org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadDetected Thread [https-jsse-nio2-8443-exec-1] (id=[15]) has been active for [62,062] milliseconds (since [9/30/19 8:46 AM]) to serve the same request for [{base-url}] and may be stuck (configured threshold for this StuckThreadDetectionValve is [60] seconds). There is/are [1] thread(s) in total that are monitored by this Valve and may be stuck.
org.apache.catalina.valves.StuckThreadDetectionValve.notifyStuckThreadCompleted Thread [https-jsse-nio2-8443-exec-1] (id=[15]) was previously reported to be stuck but has completed. It was active for approximately [360,832] milliseconds.
From Confluence\Application Data\Confluence\Logs\atlassian-confluence.log:
ERROR [https-jsse-nio2-8443-exec-9] [renderer.internal.http.HttpClientFetcher] fetch Unable to perform a request to: {base-url}/rest/gadgets/1.0/g/messagebundle/en_US/gadget.common%2Cgadget.confluence
-- referer: {base-URL}/display/KB/{article-name} | url: /plugins/macrobrowser/browse-macros.action | traceId: ---- | userName: ----- | action: browse-macros
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
[oauth.serviceprovider.internal.AuthenticatorImpl] logOAuthProblem Problem encountered authenticating OAuth client for url "{base-URL}/rest/knowledge-base/1.0/search/KB", error was "consumer_key_unknown", with parameters "{oauth_problem=consumer_key_unknown}"
I'm unsure which of these error logs is most significant and I'm not sure where to go from here. I appreciate advice you have to offer!