% psql "sslmode=verify-ca sslrootcert=server-ca.pem sslcert=client-cert.pem sslkey=client-key.pem hostaddr=34.122.194.228 port=5432 user=postgres dbname=postgres"

psql: error: connection to server at "34.122.194.228", port 5432 failed: private key file "client-key.pem" has group or world access; file must have permissions u=rw (0600) or less if owned by the current user, or permissions u=rw,g=r (0640) or less if owned by root

% ls -l client-key.pem
 -rw-r--r-- 1 seanzhao staff 1244 Sep  9 16:51 client-key.pem