DNS of container does not get updated when the DNS on the network is changed
When a new DNS server is added to the configuration, the containers do not become aware of it. Only the hosts know about the new DNS server. (IA-24663)
Workaround:
Stop and start each node one by one. This way the containers are restarted and they pick the updated resolve.conf file from the host. This causes job failures and jobs may or may not get automatically restarted based on the associated policy.