PHP FPM Errors After Upgrade

Recently I noticed a few of my servers had stopped serving my sites, with  502 errors being to visitors. I took a look at my site logs and noticed that they were full of the “Permission Denied” errors below: 2014/06/09 09:45:17 [crit] 11453#0: *22 connect() to unix:/var/run/php5-fpm.sock failed (13: Permission…

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