docker swarm join-token
内容説明 | Manage join tokens |
---|---|
利用方法 | docker swarm join-token [OPTIONS] (worker|manager) |
Swarm このコマンドは Swarm オーケストレーターにおいて動作します。
内容説明
Join tokens are secrets that allow a node to join the swarm. There are two
different join tokens available, one for the worker role and one for the manager
role. You pass the token using the --token
flag when you run
swarm join. Nodes use the join token only when they join the
swarm.
メモ
これはクラスター管理コマンドであるため、Swarm のマネージャーノード上で実行する必要があります。 マネージャーノードとワーカーノードについては、本ドキュメントの Swarm モード を参照してください。
オプション
オプション | デフォルト | 内容説明 |
---|---|---|
-q, --quiet | Only display token | |
--rotate | Rotate join token |
利用例
You can view or rotate the join tokens using swarm join-token
.
As a convenience, you can pass worker
or manager
as an argument to
join-token
to print the full docker swarm join
command to join a new node to
the swarm:
$ docker swarm join-token worker
To add a worker to this swarm, run the following command:
docker swarm join \
--token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-1awxwuwd3z9j1z3puu7rcgdbx \
172.17.0.2:2377
$ docker swarm join-token manager
To add a manager to this swarm, run the following command:
docker swarm join \
--token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-7p73s1dx5in4tatdymyhg9hu2 \
172.17.0.2:2377
Use the --rotate
flag to generate a new join token for the specified role:
$ docker swarm join-token --rotate worker
Successfully rotated worker join token.
To add a worker to this swarm, run the following command:
docker swarm join \
--token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-b30ljddcqhef9b9v4rs7mel7t \
172.17.0.2:2377
After using --rotate
, only the new token will be valid for joining with the specified role.
The -q
(or --quiet
) flag only prints the token:
$ docker swarm join-token -q worker
SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-b30ljddcqhef9b9v4rs7mel7t
--rotate
Because tokens allow new nodes to join the swarm, you should keep them secret. Be particularly careful with manager tokens since they allow new manager nodes to join the swarm. A rogue manager has the potential to disrupt the operation of your swarm.
Rotate your swarm's join token if a token gets checked-in to version control, stolen, or a node is compromised. You may also want to periodically rotate the token to ensure any unknown token leaks do not allow a rogue node to join the swarm.
To rotate the join token and print the newly generated token, run
docker swarm join-token --rotate
and pass the role: manager
or worker
.
Rotating a join-token means that no new nodes will be able to join the swarm using the old token. Rotation does not affect existing nodes in the swarm because the join token is only used for authorizing new nodes joining the swarm.
--quiet
Only print the token. Do not print a complete command for joining.