Customer has the below configuration :
Registry, Portal and VSE are on Server1 and Remote VSE on Server 2.
Database is MYSQL 5.7 configured on Server1 , and customer has mysql-connector-java-5.1.40-bin.jar on both Servers.
In the site.properties file on the Registry server, the connection strings were set to localhost for the hostname of mysql server.
## lisadb.pool.common.driverClass=com.mysql.jdbc.Driver
## lisadb.pool.common.url=jdbc:mysql://localhost:3306/[DBNAME]
## lisadb.pool.common.user=[USER]
## lisadb.pool.common.password=[PASSWORD]
As a result the remote server could not connect to the database.
Replace the Hostname for the connection string with the <IP address> of the MYSQL database server in your site.properties file.
## lisadb.pool.common.url=jdbc:mysql://localhost:3306/[DBNAME]
to
## lisadb.pool.common.url=jdbc:mysql://<IPaddress>:3306/[DBNAME]
After the change, the remote VSE was shown in the VSE Metric selection list.