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I see a log message like the following. Why? couldn't open pid file '/': Permission denied
Author: ISC Support Reference Number: AA-00304 Views: 2989 Created: 2011-05-16 14:10 Last Updated: 2017-01-25 01:04 0 Rating/ Voters

You are most likely running named as a non-root user and that user does not have permission to write in /var/run. The common ways of fixing this are to use the "pid-file" configuration statement in named.conf to specify an alternate location where the uid running named does have write permission.  For example you could create a /var/run/named directory owned by the named user and set pid-file to "/var/run/named/".

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