mysql Fatal error: cannot allocate memory for the buffer pool

Question

I have this error log from MySQL, any idea? Website works for some time and then I get MySQL shutdown completely after a couple of hours.

140919 10:48:27 [Wa         


        

Answer 1

I found this answer adds to the discussion: https://www.digitalocean.com/community/questions/mysql-server-keeps-stopping-unexpectedly?answer=26021

In short, on top of setting innodb_buffer_pool_size to something reasonable like 64M, you also may need to modify /etc/apache2/mods-enabled/mpm_prefork.conf to reduce the number of connections started by apache;

    StartServers     3
    MinSpareServers  3
    MaxSpareServers  5
    MaxRequestWorkers 25
    MaxConnectionsPerChild   1024