Overview of the Issue

This issue occurs in the following circumstances:

1. The vFunction Server VM has a firewall enabled and it is preventing the vFunction Docker Containers from communicating with one another

Solution

The following steps can be used to resolve this issue:

1. Run ifconfig -a | grep -A7 'vfunction' to see the inet address of vfunction. The [IPADDRESS] in the next step is the inet address of vfunction where the last .1 digit is replaced with .0. For example if the inet address of vFunction is 172.18.0.1 then [IPADDRESS] in the next step is 172.18.0.0
2. Run sudo firewall-cmd --permanent --zone=public --add-rich-rule='rule family=ipv4 source address=[IPADDRESS]/16 accept'. For example:

firewall-cmd --permanent --zone=public --add-rich-rule='rule family=ipv4 source address=172.18.0.0/16 accept'

3. Run sudo firewall-cmd --reload to reload the firewall
4. Run bash [install dir]/opt/vfunction/server-installation/upgrade.sh to restart the vFunction Server