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78 lines
2.6 KiB
Markdown
78 lines
2.6 KiB
Markdown
<!--[metadata]>
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+++
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title = "Add nodes to the swarm"
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description = "Add nodes to the swarm"
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keywords = ["tutorial, cluster management, swarm"]
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[menu.main]
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identifier="add-nodes"
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parent="swarm-tutorial"
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weight=13
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+++
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<![end-metadata]-->
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# Add nodes to the swarm
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Once you've [created a swarm](create-swarm.md) with a manager node, you're ready
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to add worker nodes.
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1. Open a terminal and ssh into the machine where you want to run a worker node.
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This tutorial uses the name `worker1`.
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2. Run the command produced by the `docker swarm init` output from the
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[Create a swarm](create-swarm.md) tutorial step to create a worker node joined to the existing swarm:
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```bash
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$ docker swarm join \
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--token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \
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192.168.99.100:2377
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This node joined a swarm as a worker.
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```
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If you don't have the command available, you can run the following command
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on a manager node to retrieve the join command for a worker:
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```bash
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$ docker swarm join-token worker
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To add a worker to this swarm, run the following command:
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docker swarm join \
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--token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \
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192.168.99.100:2377
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```
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3. Open a terminal and ssh into the machine where you want to run a second
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worker node. This tutorial uses the name `worker2`.
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4. Run the command produced by the `docker swarm init` output from the
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[Create a swarm](create-swarm.md) tutorial step to create a second worker node
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joined to the existing swarm:
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```bash
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$ docker swarm join \
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--token SWMTKN-1-49nj1cmql0jkz5s954yi3oex3nedyz0fb0xx14ie39trti4wxv-8vxv8rssmk743ojnwacrr2e7c \
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192.168.99.100:2377
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This node joined a swarm as a worker.
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```
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5. Open a terminal and ssh into the machine where the manager node runs and run
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the `docker node ls` command to see the worker nodes:
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```bash
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ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
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03g1y59jwfg7cf99w4lt0f662 worker2 Ready Active
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9j68exjopxe7wfl6yuxml7a7j worker1 Ready Active
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dxn1zf6l61qsb1josjja83ngz * manager1 Ready Active Leader
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```
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The `MANAGER` column identifies the manager nodes in the swarm. The empty
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status in this column for `worker1` and `worker2` identifies them as worker nodes.
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Swarm management commands like `docker node ls` only work on manager nodes.
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## What's next?
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Now your swarm consists of a manager and two worker nodes. In the next step of
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the tutorial, you [deploy a service](deploy-service.md) to the swarm.
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