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e.g. as follows- siteIP="10.147.112.139" ----- IP AddrsssAddresss of Site A app="sdnc" --- app name is sdnc corednsHost="10.147.114.7" ----- IP address of core-dns master |
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a. Execute below command /home/ubuntu on coredns master (make sure to use the key name as coredns.key) :
ssh-keygen -t rsa -f coredns.key - This creates two files- coredns.key and coredns.key.pub under /home/ubuntu
b. Copy above two key files on site A and site B and execute below command.
sudo ssh-copy-id -i coredns.key root@<corednsHost>
c. verify below command works for root user without any prompts(because the key was added with root user):
ssh -i /home/ubuntu/coredns.key root@<corednsHost> |
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