Docker swarm

The default address pool that Docker Swarm uses for its overlay network is 10.0.0.0/8. If this pool conflicts with your current network implementation, you must use a custom IP address pool. Prior to installing MKE, specify your custom address pool using the --default-addr-pool option when initializing swarm.

Note

The Swarm default-addr-pool and MCR default-address-pools settings define two separate IP address ranges used for different purposes.

A node.Status.Addr of 0.0.0.0 can cause unexpected problems. To prevent any such issues, add the --advertise-addr flag to the docker swarm join command.

To resolve the 0.0.0.0 situation, initiate the following workaround:

1. Stop the docker daemon that has .Status.Addr 0.0.0.0.

2. In the /var/lib/docker/swarm/docker-state.json file, apply the correct node IP to AdvertiseAddr and LocalAddr.

3. Start the docker daemon.

Example result:

`{"LocalAddr":"","RemoteAddr":"10.200.200.10:2377","ListenAddr":"0.0.0.0:2377","AdvertiseAddr":"","DataPathAddr":"","DefaultAddressPool":null,"SubnetSize":0,"DataPathPort":0,"JoinInProgress":false,"FIPS":false}`

to

`{"LocalAddr":"10.200.200.13","RemoteAddr":"","ListenAddr":"0.0.0.0:2377","AdvertiseAddr":"10.200.200.13:2377","DataPathAddr":"","DefaultAddressPool":null,"SubnetSize":0,"DataPathPort":0,"JoinInProgress":false,"FIPS":false}