Ensure DNS Nameservers are correct on EC2 startup

vim /etc/sysconfig/network-scripts/ifcfg-eth0


sudo vim /etc/resolv.conf

make sure this file is as you want it and then make a copy

sudo cp resolv.conf resolv.conf.bk

sudo vim /etc/rc.local

add these two lines:

rm -f /etc/resolv.conf
cp /etc/resolv.conf.bk /etc/resolv.conf

reboot safe in the knowledge that your network config will be persistent

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