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"Error" randomly appearing on page loads
Posted by: Robert Tee
Date: March 05, 2019 12:17PM


I have an issue where when I load a page on a site it returns "Error" (the default message when my cms cannot access it's DB or MySQL is not available) A subsequent page load is fine. There are no errors logged in mysql_error.log. I know this is an issue with MySQL though. What can I do or capture to understand what is causing this to happen? I already enabled mysql slow query log for days and there aren't any slow querys.

This happens maybe every 50 - 60 page clicks/loads so it's hard to capture it in real time.

MySQL Version: 5.7.23
Instances: 1
Databases: 24

Customization in my.cnf:

table_open_cache = 950
max_connections = 500
tmp_table_size = 10G
max_heap_table_size = 10G
connect_timeout = 100
interactive_timeout = 300
wait_timeout = 300

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"Error" randomly appearing on page loads
March 05, 2019 12:17PM

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