Summary
I'm suddenly getting the following error when viewing my mattermost install from a web page:
Service Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
I'm serve mattermost via apache2. I have other web sites running, and they have no issues. Mattermost had no issues until some time today.
I have a bunch of errors in /var/log/apache2/error.log of the form:
[Wed Feb 15 17:57:51.566095 2017] [proxy:error] pid 3365Connection refused: AH00957: HTTP: attempt to connect to 127.0.0.1:8065 (*) failed
Where else should I look for clues?