I want to update the glibc version from 2.17-222.el7.x86_64 to 2.17-260.el7. Will there be any effect ? IS 2.17-260.el7 compatible to centos 7.2 as all my machines are in centos 7.2 only.
You could certainly try, however you will need to pull in many dependencies along side glibc. Also, any reason why you’d be staying at CentOS 7.2 would most likely be lost, since you’d be running the base OS of a much newer version with parts and pieces of 7.2.
Run “yum update glibc” and see what changes.
You might want to just consider running the only supported version of a CentOS 7 that there is — the one with all the updates. Otherwise you are running an OS that you support entirely, and if it breaks (and it will) the only person who can fix it will be you.