<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7652.24"> <TITLE>check_mysql with unix sockets</TITLE> </HEAD> <BODY>  I'm running into an issue trying to configure to check_mysql to use a unix socket (by which I mean the mysql.sock file). The only help file or documentation I can find is the output from the check_mysql which indicates that I can pass it via the -H or --hostname flag. Unfortunately though, when I use this configuration check_mysql throws an error about it being an invalid hostname after doing the appropriate DNS lookup for the full path the the sock file as a hostname. (e.g, '/var/lib/mysql-prod-uk/mysql.sock'.simplyhired.com). Any guidance would be appreciated, -E2 </BODY> </HTML>