Friday 11 March 2016

DNS mysteries


Check your /etc/resolv.conf for which DNS server you are using

Use dig to query if your DNS is working:
dig git.myserver.com
dig git.myserver.com @ip_for_my_dns


DNS Servers:
Have serial number which must be incremented to show DNS entries were changed. 

(Remember dns name layouts are backwards)

A vs CNAME
A points to ip
CNAME points to an A or CNAME entry by name
https://support.dnsimple.com/articles/differences-a-cname-records/

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