Gitlab ssh keys in Gitlab High avaliability

Hi all, i have installed two gitlab server for HA, behind proxy. Database and storage is shared. when i add ssh keys, it shows( in GUI) that ssh is copied in both servers. but when i clone the repo. only one server clone the repo while other ask for password.
Only one server store the ssh keys in a ".ssh/authorized_keys " while other don’t.
Do someone kindly help me in synchronization the ssh of both gitlab servers.
Please let me know. I appreciate your help and time.