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Migrate from standalone docker to Docker Swarm in place.

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Migrate from standalone docker to Docker Swarm in place.

So you have multiple standalone Docker hosts and you want to migrate to a multihost docker swarm, and let's just put some icing on the cake with Portainer & install it across the swarm.

So first off before we do anything make sure you have your volumes set properly and they are persistent. This is key to the migration so that you don't lose any data.  I have only done this once by the way so take these steps carefully. I also caution you because you can lose data/endpoints/containers by doing this.

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