CODEWITHSUNDEEP
dockerdocker-swarmdocker-network
MLGonc
MLGonc

Reputation: 99

Docker swarm overlay Connect: no route to host

I have a swarm with 2 nodes. One is an ubuntu VM on azure and the other one is my VM on my local machine.

When the containers try to make requests to each other with I get this dial tcp 10.0.0.88:9999: connect: no route to host

I've enabled in the 2 nodes all the swarm communication ports needed: tcp 2377 udp/tcp 7946 and udp 4789.

Communication works if I run everything local.

Any ideas?

Thanks

Upvotes: 0

Views: 4393

Answers (1)

BMitch
BMitch

Reputation: 264831

An overlay network doesn't create connectivity between two nodes, it requires connectivity, and then uses that to connect containers running on each node. From the prerequisites, each node needs to be able to reach the overlay ports on every other node in the cluster. See the documentation for more details:

https://docs.docker.com/network/overlay/

Upvotes: 1

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