1. docker
  2. Commit fec803f7793ce347fe276ea93c13fb9022677135
Browse code

update create swarm and add nodes to use the auto-generated join command

Signed-off-by: Charles Smith <charles.smith@docker.com>

Charles Smith authored on 2016/07/14 08:52:59
Showing 2 changed files
docs/swarm/swarm-tutorial/add-nodes.md
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@@ -19,34 +19,41 @@ 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 following command to create a worker node joined to
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-the existing swarm:
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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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-    ```
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-    docker swarm join --secret <SECRET> <MANAGER-IP>:<PORT>
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+    ```bash
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+    $ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
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+      --ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
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+      192.168.99.100:2377
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     ```
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-    Replace `<SECRET>` with the secret that was printed by `docker swarm init` in the
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-    previous step. Replace `<MANAGER-IP>` with the address of the manager node
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-    and `<PORT>` with the port where the manager listens.
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-
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-    In the tutorial, the following command joins `worker1` to the swarm on `manager1`:
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+    If you don't have the command available, you can run the following command:
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+    ```bash
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+    docker swarm join --secret <SECRET> <MANAGER-IP>:<PORT>
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     ```
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-    $ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb 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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+    Replace `<SECRET>` with the secret that was printed by `docker swarm init`
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+    in the previous step. Replace `<MANAGER-IP>` with the address of the manager
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+    node and `<PORT>` with the port where the manager listens.
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+
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+    The command generated from `docker swarm init` includes the `--ca-hash` to
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+    securely identify the manager node according to its root CA. For the
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+    tutorial, it is OK to join without it.
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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 `docker swarm join --secret <SECRET> <MANAGER-IP>:<PORT>` to create a worker node joined to
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-the existing Swarm.
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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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-    Replace `<SECRET>` with the secret that was printed by `docker swarm init` in the
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-    previous step. Replace `<MANAGER-IP>` with the address of the manager node
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-    and `<PORT>` with the port where the manager listens.
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+    ```bash
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+    $ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
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+      --ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
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+      192.168.99.100:2377
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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:
docs/swarm/swarm-tutorial/create-swarm.md
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@@ -22,51 +22,59 @@ node. For example, the tutorial uses a machine named `manager1`.
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 2. Run the following command to create a new swarm:
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-    ```
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+    ```bash
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     docker swarm init --listen-addr <MANAGER-IP>:<PORT>
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     ```
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-    In the tutorial, the following command creates a swarm on the `manager1` machine:
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+    In the tutorial, the following command creates a swarm on the `manager1`
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+    machine:
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-    ```
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+    ```bash
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     $ docker swarm init --listen-addr 192.168.99.100:2377
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     No --secret provided. Generated random secret:
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-        4ao565v9jsuogtq5t8s379ulb
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+      4ao565v9jsuogtq5t8s379ulb
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-    Swarm initialized: current node (dxn1zf6l61qsb1josjja83ngz) is now a manager.
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+    Swarm initialized: current node (dxn1zf6l61qsb1josjja83ngz) is now a
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+    manager.
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     To add a worker to this swarm, run the following command:
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-        docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
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-        --ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
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-        192.168.99.100:2377
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+      docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
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+      --ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
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+      192.168.99.100:2377
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     ```
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     The `--listen-addr` flag configures the manager node to listen on port
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     `2377`. The other nodes in the swarm must be able to access the manager at
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     the IP address.
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+    The `--ca-hash` flag provides the identity of the root CA for the manager
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+    node.
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+
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+2. Save the output of `docker swarm init` that includes the command to join
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+worker nodes to the swarm.
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+
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 3. Run `docker info` to view the current state of the swarm:
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-     ```
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-     $ docker info
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+    ```bash
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+    $ docker info
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-     Containers: 2
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-      Running: 0
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-      Paused: 0
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-      Stopped: 2
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-     ...snip...
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-     Swarm: active
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+    Containers: 2
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+    Running: 0
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+    Paused: 0
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+    Stopped: 2
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+      ...snip...
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+    Swarm: active
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       NodeID: dxn1zf6l61qsb1josjja83ngz
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       Is Manager: true
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       Managers: 1
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       Nodes: 1
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       CA Certificate Hash: sha256:b7986d3baeff2f5664dfe350eec32e2383539ec1a802ba541c4eb829056b5f61
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-     ...snip...
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-     ```
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+      ...snip...
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+    ```
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 4. Run the `docker node ls` command to view information about nodes:
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-    ```
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+    ```bash
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     $ docker node ls
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     ID                           HOSTNAME  MEMBERSHIP  STATUS  AVAILABILITY  MANAGER STATUS  LEADER
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@@ -74,11 +82,11 @@ node. For example, the tutorial uses a machine named `manager1`.
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     ```
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-     The `*` next to the node id, indicates that you're currently connected on
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-     this node.
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+    The `*` next to the node id indicates that you're currently connected on
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+    this node.
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-     Docker Engine swarm mode automatically names the node for the machine host
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-     name. The tutorial covers other columns in later steps.
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+    Docker Engine swarm mode automatically names the node for the machine host
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+    name. The tutorial covers other columns in later steps.
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 ## What's next?
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