LAMP Stack, Ubuntu 14, using virtual host, mysql crashes daily but for only one website the other is unaffected?

May 1, 2017 1.3k views
MySQL Ubuntu
7a500a655ed595bcf1389f7211fb156672878bd8
By:
N8Ting

I've already upped the innodb buffer to 64mb, applied the recommended Apache tweaks. These sites are hosted on a 1GB dropplet, running 2 WP sites. I haven't tried SWAP, but I'm thinking it's not a RAM issue since only one site crashes while the other remains operational. I could be wrong .... about the RAM ... any ideas on where I should start looking? Thanks in advance.

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3 Answers
hansen May 1, 2017

Hi @N8Ting

Define "crashes" - do you have any logs or what's the error?
Do not add SWAP to DigitalOcean droplets - it will become slower, just add more RAM if needed.
I would probably have a look at the recommendations from MySQL Tuner based on your database statistics: https://github.com/major/MySQLTuner-perl

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N8Ting May 1, 2017

"Crashes" probably isn't the correct word since the other site is unaffected. I get the "error establishing database connection" message on screen. If I restart Mysql it's back up and running. I'm pretty new to this whole thing, I've tried to find the error logs, the only log I did manage to find only had the activity from when I restarted mysql this morning. Recommendations on which log files to view? Again, I appreciate the help.

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  • hansen May 1, 2017

    @N8Ting
    You can find usually find you MySQL log in /var/log/mysql/error.log
    Are you connecting to MySQL the same way on both sites? Meaning are you connecting through localhost and port 3306 - or are you using a socket.

N8Ting May 2, 2017

Good morning and thank you for working with me. The error log you mentioned is the one I previewed but only had info from when I restarted Mysql. The site has not failed since yesterday morning, so I'll continue to watch and when it fails again I'll dig into the error log then. As far as I know they connect in the exact same way using localhost.

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