PHP-MySQLi connection randomly fails with “Cannot assign requested address”

Question

Since about 2 weeks I\'m dealing with one of the weirdest problems in LAMP stack. Long story short randomly connection to MySQL server is failing with error message:

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Answer 1

Vicidial servers regularly require increasing the connection limit in MySQL. Many installations (and we've seen and worked on a lot of them) have had to do this by modifying the limit

Additionally there have been reports of conntract_Max requiring increase in

/sbin/sysctl -w net.netfilter.nf_conntrack_max=196608

when the problem turns out to be networking related.

Also note that Vicidial has some specific suggested settings and even some enterprise settings for mysql configuration. Have a look in my-bigvici.cnf in /usr/src/astguiclient/conf for some configuration ideas that may open your mysql server up a bit.

So far, no problems have resulted from increasing connection limits, just additional resources used. Since the purpose of the server is to make this application work, dedicating resources to this application does not seem like a problem. LOL