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 3365] (111)Connection refused: AH00957: HTTP: attempt to connect to 127.0.0.1:8065 (*) failed
Where else should I look for clues?
UPDATE:
I looked in mattermost.log and saw this:
[2017/02/16 14:49:37 PST] [CRIT] Failed to ping db err:dial tcp 127.0.0.1:3306: getsockopt: connection refused
But those errors have been happening for months it seems, since I first did the install.
UPDATE2:
I looked in mysql logs, and there were errors saying that 127.0.0.1 was denied access to the mysql database. It seems that another program I had installed recently changed the settings in /etc/mysql/my.cnf changed the bind-address parameter to something other than localhost. Changing it back and restarting mysql did the trick.