nginx can't restart after "Aborted connection to db" in syslog

[leevh]

Hoping someone else has experienced this one. I've had 3 times in the last 6 months I'm alerted to all sites down. Nginx is not running and trying to restart gives :

nginx: [emerg] SSL_CTX_use_PrivateKey("/etc/ssl/private/o1.server.ca1.mysite.com.key") failed (SSL: error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch)

I've checked daily log and o1 LE renewed fine 4 days earlier. I did find something odd in my syslog at the time sites went down: "Aborted connection to db" https://gist.github.com/leevh/cbd51dcab2ca1e09e85995a5552a9be3

boa info command on Linode server: https://gist.github.com/leevh/6a83158b6272ba20dbe0b048bf27a16c

My fix has been running octopus up-head all force to fix the certs and get everything running again.

Any thoughts would be awesome, thank you!

[leevh]

This happened again two days ago, however this time it didn't say it "aborted". Mysql crashed somehow and upon restart there seems to become a cert problem.

https://gist.github.com/leevh/24cff860e1a040ee87e5d296b29c6993

[omega8cc]

This looks more like failing filesystem, unfortunately..