knrdlog
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Docker Swarm: `error creating vxlan interface: file exists`

devops docker docker-swarm

If docker swarm rejects to deploy a service because network interface already exists:

$ docker service ps stackname_appname --no-trunc

Rejected 34 seconds ago   "network sandbox join failed: subnet sandbox join failed for "10.0.14.0/24": error creating vxlan interface: file exists

Then find all problematic interfaces on the host and delete them:

$ ip -d link show | grep vx | grep DOWN
$ sudo ip link delete vx-001095-owhr8  # for each entry

Now redeploying should work!

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