We have VNA 3.5 running in our environment. We ran out of disk space
on the VNA VM and the operational status of VNA Gateway in PM changed to down.
We increased the disk space on VM and ran service start 'wildfly', but we still see the same error.
The following exception was seen in /opt/CA/VNA/wildfly/standalone/log/server.log
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago.
The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
mysql.sock.lock with nothing in it was left behind after the reboot
When we attempted to start mysql we saw the following:
CA VNA 3.5
To resolve we did the following:
1. Removed the /var/lock/subsys/mysql
2. Removed /opt/CA/MySql/data/mysql.sock.lock
3. service mysql start - which started mysql
4. service wildfly stop / start to restart wildfly successfully