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

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Signed-off-by: Charles Smith <charles.smith@docker.com>
This commit is contained in:
Charles Smith 2016-07-13 16:52:59 -07:00
parent 0a96ba8a0f
commit fec803f779
2 changed files with 55 additions and 40 deletions
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41
docs/swarm/swarm-tutorial/add-nodes.md
View file

@ -19,34 +19,41 @@ to add worker nodes.
1. Open a terminal and ssh into the machine where you want to run a worker node.
This tutorial uses the name `worker1`.
2. Run the following command to create a worker node joined to
the existing swarm:
2. Run the command produced by the `docker swarm init` output from the
[Create a swarm](create-swarm.md) tutorial step to create a worker node joined to the existing swarm:
```bash
$ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
--ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
192.168.99.100:2377
```
If you don't have the command available, you can run the following command:
```bash
docker swarm join --secret <SECRET> <MANAGER-IP>:<PORT>
```
Replace `<SECRET>` with the secret that was printed by `docker swarm init` in the
previous step. Replace `<MANAGER-IP>` with the address of the manager node
and `<PORT>` with the port where the manager listens.
Replace `<SECRET>` with the secret that was printed by `docker swarm init`
in the previous step. Replace `<MANAGER-IP>` with the address of the manager
node and `<PORT>` with the port where the manager listens.
In the tutorial, the following command joins `worker1` to the swarm on `manager1`:
```
$ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb 192.168.99.100:2377
This node joined a Swarm as a worker.
```
The command generated from `docker swarm init` includes the `--ca-hash` to
securely identify the manager node according to its root CA. For the
tutorial, it is OK to join without it.
3. Open a terminal and ssh into the machine where you want to run a second
worker node. This tutorial uses the name `worker2`.
4. Run `docker swarm join --secret <SECRET> <MANAGER-IP>:<PORT>` to create a worker node joined to
the existing Swarm.
4. Run the command produced by the `docker swarm init` output from the
[Create a swarm](create-swarm.md) tutorial step to create a second worker node
joined to the existing swarm:
Replace `<SECRET>` with the secret that was printed by `docker swarm init` in the
previous step. Replace `<MANAGER-IP>` with the address of the manager node
and `<PORT>` with the port where the manager listens.
```bash
$ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
--ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
192.168.99.100:2377
```
5. Open a terminal and ssh into the machine where the manager node runs and run
the `docker node ls` command to see the worker nodes:

54
docs/swarm/swarm-tutorial/create-swarm.md
View file

@ -22,51 +22,59 @@ node. For example, the tutorial uses a machine named `manager1`.
2. Run the following command to create a new swarm:
```
```bash
docker swarm init --listen-addr <MANAGER-IP>:<PORT>
```
In the tutorial, the following command creates a swarm on the `manager1` machine:
In the tutorial, the following command creates a swarm on the `manager1`
machine:
```
```bash
$ docker swarm init --listen-addr 192.168.99.100:2377
No --secret provided. Generated random secret:
4ao565v9jsuogtq5t8s379ulb
4ao565v9jsuogtq5t8s379ulb
Swarm initialized: current node (dxn1zf6l61qsb1josjja83ngz) is now a manager.
Swarm initialized: current node (dxn1zf6l61qsb1josjja83ngz) is now a
manager.
To add a worker to this swarm, run the following command:
docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
--ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
192.168.99.100:2377
docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \
--ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \
192.168.99.100:2377
```
The `--listen-addr` flag configures the manager node to listen on port
`2377`. The other nodes in the swarm must be able to access the manager at
the IP address.
The `--ca-hash` flag provides the identity of the root CA for the manager
node.
2. Save the output of `docker swarm init` that includes the command to join
worker nodes to the swarm.
3. Run `docker info` to view the current state of the swarm:
```
$ docker info
```bash
$ docker info
Containers: 2
Running: 0
Paused: 0
Stopped: 2
...snip...
Swarm: active
Containers: 2
Running: 0
Paused: 0
Stopped: 2
...snip...
Swarm: active
NodeID: dxn1zf6l61qsb1josjja83ngz
Is Manager: true
Managers: 1
Nodes: 1
CA Certificate Hash: sha256:b7986d3baeff2f5664dfe350eec32e2383539ec1a802ba541c4eb829056b5f61
...snip...
```
...snip...
```
4. Run the `docker node ls` command to view information about nodes:
```
```bash
$ docker node ls
ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER
@ -74,11 +82,11 @@ node. For example, the tutorial uses a machine named `manager1`.
```
The `*` next to the node id, indicates that you're currently connected on
this node.
The `*` next to the node id indicates that you're currently connected on
this node.
Docker Engine swarm mode automatically names the node for the machine host
name. The tutorial covers other columns in later steps.
Docker Engine swarm mode automatically names the node for the machine host
name. The tutorial covers other columns in later steps.
## What's next?