diff --git a/contrib/completion/zsh/_docker b/contrib/completion/zsh/_docker index 1d71374a32..724d869837 100644 --- a/contrib/completion/zsh/_docker +++ b/contrib/completion/zsh/_docker @@ -1087,7 +1087,7 @@ __docker_service_subcommand() { "($help)--name=[Service name]:name: " "($help)*--network=[Network attachments]:network: " "($help)*"{-p=,--publish=}"[Publish a port as a node port]:port: " - "($help)--registry-auth[Send registry authentication details to Swarm agents]" + "($help)--registry-auth[Send registry authentication details to swarm agents]" "($help)--replicas=[Number of tasks]:replicas: " "($help)--reserve-cpu=[Reserve CPUs]:value: " "($help)--reserve-memory=[Reserve Memory]:value: " @@ -1185,11 +1185,11 @@ __docker_service_subcommand() { __docker_swarm_commands() { local -a _docker_swarm_subcommands _docker_swarm_subcommands=( - "init:Initialize a Swarm" - "inspect:Inspect the Swarm" - "join:Join a Swarm as a node and/or manager" - "leave:Leave a Swarm" - "update:Update the Swarm" + "init:Initialize a swarm" + "inspect:Inspect the swarm" + "join:Join a swarm as a node and/or manager" + "leave:Leave a swarm" + "update:Update the swarm" ) _describe -t docker-swarm-commands "docker swarm command" _docker_swarm_subcommands } diff --git a/docs/reference/commandline/deploy.md b/docs/reference/commandline/deploy.md index 9c9a1929e9..c18a8f58bb 100644 --- a/docs/reference/commandline/deploy.md +++ b/docs/reference/commandline/deploy.md @@ -19,7 +19,7 @@ Create and update a stack from a Distributed Application Bundle (DAB) Options: --file string Path to a Distributed Application Bundle file (Default: STACK.dab) --help Print usage - --registry-auth Send registry authentication details to Swarm agents + --registry-auth Send registry authentication details to swarm agents ``` Create and update a stack from a `dab` file. This command has to be diff --git a/docs/reference/commandline/index.md b/docs/reference/commandline/index.md index 75acb1c7fa..583ddf9f95 100644 --- a/docs/reference/commandline/index.md +++ b/docs/reference/commandline/index.md @@ -111,7 +111,6 @@ read the [`dockerd`](dockerd.md) reference page. | Command | Description | |:--------|:-------------------------------------------------------------------| -| [node accept](node_accept.md) | Accept a node into the swarm | | [node promote](node_promote.md) | Promote a node that is pending a promotion to manager | | [node demote](node_demote.md) | Demotes an existing manager so that it is no longer a manager | | [node inspect](node_inspect.md) | Inspect a node in the swarm | @@ -124,10 +123,11 @@ read the [`dockerd`](dockerd.md) reference page. | Command | Description | |:--------|:-------------------------------------------------------------------| -| [swarm init](swarm_init.md) | Initialize a Swarm | -| [swarm join](swarm_join.md) | Join a Swarm as a manager node or worker node | +| [swarm init](swarm_init.md) | Initialize a swarm | +| [swarm join](swarm_join.md) | Join a swarm as a manager node or worker node | | [swarm leave](swarm_leave.md) | Remove the current node from the swarm | | [swarm update](swarm_update.md) | Update attributes of a swarm | +| [swarm join-token](swarm_join_token.md) | Display or rotate join tokens | ### Swarm service commands diff --git a/docs/reference/commandline/info.md b/docs/reference/commandline/info.md index 7d0743554f..04ccc8ed67 100644 --- a/docs/reference/commandline/info.md +++ b/docs/reference/commandline/info.md @@ -38,7 +38,7 @@ available on the volume where `/var/lib/docker` is mounted. ## Display Docker system information Here is a sample output for a daemon running on Ubuntu, using the overlay -storage driver and a node that is part of a 2 node Swarm cluster: +storage driver and a node that is part of a 2 node swarm cluster: $ docker -D info Containers: 14 diff --git a/docs/reference/commandline/node_accept.md b/docs/reference/commandline/node_accept.md deleted file mode 100644 index 73676c086c..0000000000 --- a/docs/reference/commandline/node_accept.md +++ /dev/null @@ -1,32 +0,0 @@ - - -# node accept - -```markdown -Usage: docker node accept NODE [NODE...] - -Accept a node in the swarm - -Options: - --help Print usage -``` - -Accept a node into the swarm. This command targets a docker engine that is a manager in the swarm cluster. - - -```bash -$ docker node accept -``` - -## Related information - -* [node promote](node_promote.md) -* [node demote](node_demote.md) diff --git a/docs/reference/commandline/node_demote.md b/docs/reference/commandline/node_demote.md index 5d765adfaf..a1baff0e50 100644 --- a/docs/reference/commandline/node_demote.md +++ b/docs/reference/commandline/node_demote.md @@ -29,5 +29,4 @@ $ docker node demote ## Related information -* [node accept](node_accept.md) * [node promote](node_promote.md) diff --git a/docs/reference/commandline/node_inspect.md b/docs/reference/commandline/node_inspect.md index a565bb3af0..6cba8ece37 100644 --- a/docs/reference/commandline/node_inspect.md +++ b/docs/reference/commandline/node_inspect.md @@ -41,7 +41,6 @@ Example output: "UpdatedAt": "2016-06-16T22:52:45.230878043Z", "Spec": { "Role": "manager", - "Membership": "accepted", "Availability": "active" }, "Description": { diff --git a/docs/reference/commandline/node_ls.md b/docs/reference/commandline/node_ls.md index fee03cc588..f446568b3c 100644 --- a/docs/reference/commandline/node_ls.md +++ b/docs/reference/commandline/node_ls.md @@ -30,10 +30,10 @@ Lists all the nodes that the Docker Swarm manager knows about. You can filter us Example output: $ docker node ls - ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER - 1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Accepted Ready Active - 38ciaotwjuritcdtn9npbnkuz swarm-worker1 Accepted Ready Active - e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Accepted Ready Active Reachable Yes + ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS + 1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active + 38ciaotwjuritcdtn9npbnkuz swarm-worker1 Ready Active + e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Ready Active Leader ## Filtering @@ -54,16 +54,16 @@ The `name` filter matches on all or part of a node name. The following filter matches the node with a name equal to `swarm-master` string. $ docker node ls -f name=swarm-manager1 - ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER - e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Accepted Ready Active Reachable Yes + ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS + e216jshn25ckzbvmwlnh5jr3g * swarm-manager1 Ready Active Leader ### id The `id` filter matches all or part of a node's id. $ docker node ls -f id=1 - ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER - 1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Accepted Ready Active + ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS + 1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active #### label @@ -75,8 +75,8 @@ The following filter matches nodes with the `usage` label regardless of its valu ```bash $ docker node ls -f "label=foo" -ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER -1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Accepted Ready Active +ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS +1bcef6utixb0l0ca7gxuivsj0 swarm-worker2 Ready Active ``` diff --git a/docs/reference/commandline/node_promote.md b/docs/reference/commandline/node_promote.md index 884fee8fc9..b507e7d489 100644 --- a/docs/reference/commandline/node_promote.md +++ b/docs/reference/commandline/node_promote.md @@ -28,5 +28,4 @@ $ docker node promote ## Related information -* [node accept](node_accept.md) * [node demote](node_demote.md) diff --git a/docs/reference/commandline/node_rm.md b/docs/reference/commandline/node_rm.md index f03f8a19ad..1ed6a39336 100644 --- a/docs/reference/commandline/node_rm.md +++ b/docs/reference/commandline/node_rm.md @@ -23,14 +23,13 @@ Options: --help Print usage ``` -Removes specified nodes from a swarm. Rejects nodes with `Pending` -membership from the swarm. +Removes specified nodes from a swarm. Example output: $ docker node rm swarm-node-02 - Node swarm-node-02 removed from Swarm + Node swarm-node-02 removed from swarm ## Related information diff --git a/docs/reference/commandline/node_update.md b/docs/reference/commandline/node_update.md index f90b40cc97..479db326c1 100644 --- a/docs/reference/commandline/node_update.md +++ b/docs/reference/commandline/node_update.md @@ -21,7 +21,6 @@ Options: --help Print usage --label-add value Add or update a node label (key=value) (default []) --label-rm value Remove a node label if exists (default []) - --membership string Membership of the node (accepted/rejected) --role string Role of the node (worker/manager) ``` diff --git a/docs/reference/commandline/service_create.md b/docs/reference/commandline/service_create.md index 3d81286c4d..795ee395e8 100644 --- a/docs/reference/commandline/service_create.md +++ b/docs/reference/commandline/service_create.md @@ -31,7 +31,7 @@ Options: --name string Service name --network value Network attachments (default []) -p, --publish value Publish a port as a node port (default []) - --registry-auth Send registry authentication details to Swarm agents + --registry-auth Send registry authentication details to swarm agents --replicas value Number of tasks (default none) --reserve-cpu value Reserve CPUs (default 0.000) --reserve-memory value Reserve Memory (default 0 B) diff --git a/docs/reference/commandline/service_update.md b/docs/reference/commandline/service_update.md index 7796d8d0b5..f834ac4b31 100644 --- a/docs/reference/commandline/service_update.md +++ b/docs/reference/commandline/service_update.md @@ -38,7 +38,7 @@ Options: --network-rm value Remove a network by name (default []) --publish-add value Add or update a published port (default []) --publish-rm value Remove a published port by its target port (default []) - --registry-auth Send registry authentication details to Swarm agents + --registry-auth Send registry authentication details to swarm agents --replicas value Number of tasks (default none) --reserve-cpu value Reserve CPUs (default 0.000) --reserve-memory value Reserve Memory (default 0 B) diff --git a/docs/reference/commandline/swarm_init.md b/docs/reference/commandline/swarm_init.md index e7f8f3f166..c7575047af 100644 --- a/docs/reference/commandline/swarm_init.md +++ b/docs/reference/commandline/swarm_init.md @@ -14,74 +14,43 @@ parent = "smn_cli" ```markdown Usage: docker swarm init [OPTIONS] -Initialize a Swarm +Initialize a swarm Options: - --auto-accept value Auto acceptance policy (default worker) --cert-expiry duration Validity period for node certificates (default 2160h0m0s) --dispatcher-heartbeat duration Dispatcher heartbeat period (default 5s) --external-ca value Specifications of one or more certificate signing endpoints --force-new-cluster Force create a new cluster from current state. --help Print usage --listen-addr value Listen address (default 0.0.0.0:2377) - --secret string Set secret value needed to accept nodes into cluster --task-history-limit int Task history retention limit (default 10) ``` -Initialize a Swarm cluster. The docker engine targeted by this command becomes a manager -in the newly created one node Swarm cluster. +Initialize a swarm cluster. The docker engine targeted by this command becomes a manager +in the newly created one node swarm cluster. ```bash $ docker swarm init --listen-addr 192.168.99.121:2377 -No --secret provided. Generated random secret: - 4ao565v9jsuogtq5t8s379ulb - -Swarm initialized: current node (1ujecd0j9n3ro9i6628smdmth) is now a manager. +Swarm initialized: current node (bvz81updecsj6wjz393c09vti) is now a manager. To add a worker to this swarm, run the following command: - docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb \ - --ca-hash sha256:07ce22bd1a7619f2adc0d63bd110479a170e7c4e69df05b67a1aa2705c88ef09 \ - 192.168.99.121:2377 -$ docker node ls -ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER -1ujecd0j9n3ro9i6628smdmth * manager1 Accepted Ready Active Reachable Yes + docker swarm join \ + --token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-1awxwuwd3z9j1z3puu7rcgdbx \ + 172.17.0.2:2377 + +To add a manager to this swarm, run the following command: + docker swarm join \ + --token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-7p73s1dx5in4tatdymyhg9hu2 \ + 172.17.0.2:2377 ``` -If a secret for joining new nodes is not provided with `--secret`, `docker swarm init` will -generate a random one and print it to the terminal (as seen in the example above). To initialize -a swarm with no secret, use `--secret ""`. +`docker swarm init` generates two random tokens, a worker token and a manager token. When you join +a new node to the swarm, the node joins as a worker or manager node based upon the token you pass +to [swarm join](swarm_join.md). -### `--auto-accept value` - -This flag controls node acceptance into the cluster. By default, `worker` nodes are -automatically accepted by the cluster. This can be changed by specifying what kinds of nodes -can be auto-accepted into the cluster. If auto-accept is not turned on, then -[node accept](node_accept.md) can be used to explicitly accept a node into the cluster. - -For example, the following initializes a cluster with auto-acceptance of workers, but not managers - - -```bash -$ docker swarm init --listen-addr 192.168.99.121:2377 --auto-accept worker -``` - -It is possible to pass a comma-separated list of node types. The following initializes a cluster -with auto-acceptance of both `worker` and `manager` nodes - -```bash -$ docker swarm init --listen-addr 192.168.99.121:2377 --auto-accept worker,manager -``` - -To disable auto acceptance, use the `none` option. Note that this option cannot -be combined with other values. When disabling auto acceptance, nodes must be -manually accepted or rejected using `docker node accept` or `docker node rm`. - -The following example enables swarm mode with auto acceptance disabled: - -```bash -$ docker swarm init --listen-addr 192.168.99.121:2377 --auto-accept none -``` +After you create the swarm, you can display or rotate the token using +[swarm join-token](swarm_join_token.md). ### `--cert-expiry` @@ -105,11 +74,7 @@ This flag forces an existing node that was part of a quorum that was lost to res ### `--listen-addr value` -The node listens for inbound Swarm manager traffic on this IP:PORT - -### `--secret string` - -Secret value needed to accept nodes into the Swarm +The node listens for inbound swarm manager traffic on this IP:PORT ### `--task-history-limit` @@ -120,5 +85,5 @@ This flag sets up task history retention limit. * [swarm join](swarm_join.md) * [swarm leave](swarm_leave.md) * [swarm update](swarm_update.md) -* [node accept](node_accept.md) +* [swarm join-token](swarm_join_token.md) * [node rm](node_rm.md) diff --git a/docs/reference/commandline/swarm_join.md b/docs/reference/commandline/swarm_join.md index 0499b10894..a8edc348d7 100644 --- a/docs/reference/commandline/swarm_join.md +++ b/docs/reference/commandline/swarm_join.md @@ -14,55 +14,54 @@ parent = "smn_cli" ```markdown Usage: docker swarm join [OPTIONS] HOST:PORT -Join a Swarm as a node and/or manager +Join a swarm as a node and/or manager Options: - --ca-hash string Hash of the Root Certificate Authority certificate used for trusted join --help Print usage --listen-addr value Listen address (default 0.0.0.0:2377) - --manager Try joining as a manager. - --secret string Secret for node acceptance + --token string Token for entry into the swarm ``` -Join a node to a Swarm cluster. If the `--manager` flag is specified, the docker engine -targeted by this command becomes a `manager`. If it is not specified, it becomes a `worker`. +Join a node to a swarm. The node joins as a manager node or worker node based upon the token you +pass with the `--token` flag. If you pass a manager token, the node joins as a manager. If you +pass a worker token, the node joins as a worker. ### Join a node to swarm as a manager +The example below demonstrates joining a manager node using a manager token. + ```bash -$ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb --manager --listen-addr 192.168.99.122:2377 192.168.99.121:2377 -This node joined a Swarm as a manager. +$ docker swarm join --token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-7p73s1dx5in4tatdymyhg9hu2 --listen-addr 192.168.99.122:2377 192.168.99.121:2377 +This node joined a swarm as a manager. $ docker node ls -ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER -dkp8vy1dq1kxleu9g4u78tlag * manager2 Accepted Ready Active Reachable -dvfxp4zseq4s0rih1selh0d20 manager1 Accepted Ready Active Reachable Yes +ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS +dkp8vy1dq1kxleu9g4u78tlag * manager2 Ready Active Reachable +dvfxp4zseq4s0rih1selh0d20 manager1 Ready Active Leader ``` +A cluster should only have 3-7 managers at most, because a majority of managers must be available +for the cluster to function. Nodes that aren't meant to participate in this management quorum +should join as workers instead. Managers should be stable hosts that have static IP addresses. + ### Join a node to swarm as a worker +The example below demonstrates joining a worker node using a worker token. + ```bash -$ docker swarm join --secret 4ao565v9jsuogtq5t8s379ulb --listen-addr 192.168.99.123:2377 192.168.99.121:2377 -This node joined a Swarm as a worker. +$ docker swarm join --token SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-1awxwuwd3z9j1z3puu7rcgdbx --listen-addr 192.168.99.123:2377 192.168.99.121:2377 +This node joined a swarm as a worker. $ docker node ls -ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER -7ln70fl22uw2dvjn2ft53m3q5 worker2 Accepted Ready Active -dkp8vy1dq1kxleu9g4u78tlag worker1 Accepted Ready Active Reachable -dvfxp4zseq4s0rih1selh0d20 * manager1 Accepted Ready Active Reachable Yes +ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS +7ln70fl22uw2dvjn2ft53m3q5 worker2 Ready Active +dkp8vy1dq1kxleu9g4u78tlag worker1 Ready Active Reachable +dvfxp4zseq4s0rih1selh0d20 * manager1 Ready Active Leader ``` -### `--ca-hash` - -Hash of the Root Certificate Authority certificate used for trusted join. - ### `--listen-addr value` -The node listens for inbound Swarm manager traffic on this IP:PORT +The node listens for inbound swarm manager traffic on this IP:PORT -### `--manager` - -Joins the node as a manager - -### `--secret string` +### `--token string` Secret value required for nodes to join the swarm diff --git a/docs/reference/commandline/swarm_join_token.md b/docs/reference/commandline/swarm_join_token.md new file mode 100644 index 0000000000..1355f70ba1 --- /dev/null +++ b/docs/reference/commandline/swarm_join_token.md @@ -0,0 +1,76 @@ + + +# swarm join-token + +```markdown +Usage: docker swarm join-token [--rotate] (worker|manager) + +Manage join tokens + +Options: + --help Print usage + -q, --quiet Only display token + --rotate Rotate join token +``` + +Join tokens are secrets that determine whether or not a node will join the swarm as a manager node +or a worker node. You pass the token using the `--token flag` when you run +[swarm join](swarm_join.md). You can access the current tokens or rotate the tokens using +`swarm join-token`. + +Run with only a single `worker` or `manager` argument, it will print a command for joining a new +node to the swarm, including the necessary token: + +```bash +$ 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: + +```bash +$ docker swarm join-token --rotate worker +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: + +```bash +$ docker swarm join-token -q worker +SWMTKN-1-3pu6hszjas19xyp7ghgosyx9k8atbfcr8p2is99znpy26u2lkl-b30ljddcqhef9b9v4rs7mel7t +``` + +### `--rotate` + +Update the join token for a specified role with a new token and print the token. + +### `--quiet` + +Only print the token. Do not print a complete command for joining. + +## Related information + +* [swarm join](swarm_join.md) diff --git a/docs/reference/commandline/swarm_leave.md b/docs/reference/commandline/swarm_leave.md index ffae0d6ab1..e838097c80 100644 --- a/docs/reference/commandline/swarm_leave.md +++ b/docs/reference/commandline/swarm_leave.md @@ -14,7 +14,7 @@ parent = "smn_cli" ```markdown Usage: docker swarm leave [OPTIONS] -Leave a Swarm +Leave a swarm Options: --force Force leave ignoring warnings. @@ -26,10 +26,10 @@ This command causes the node to leave the swarm. On a manager node: ```bash $ docker node ls -ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER -7ln70fl22uw2dvjn2ft53m3q5 worker2 Accepted Ready Active -dkp8vy1dq1kxleu9g4u78tlag worker1 Accepted Ready Active Reachable -dvfxp4zseq4s0rih1selh0d20 * manager1 Accepted Ready Active Reachable Yes +ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS +7ln70fl22uw2dvjn2ft53m3q5 worker2 Ready Active +dkp8vy1dq1kxleu9g4u78tlag worker1 Ready Active Reachable +dvfxp4zseq4s0rih1selh0d20 * manager1 Ready Active Leader ``` On a worker node: @@ -41,10 +41,10 @@ Node left the default swarm. On a manager node: ```bash $ docker node ls -ID HOSTNAME MEMBERSHIP STATUS AVAILABILITY MANAGER STATUS LEADER -7ln70fl22uw2dvjn2ft53m3q5 worker2 Accepted Down Active -dkp8vy1dq1kxleu9g4u78tlag worker1 Accepted Ready Active Reachable -dvfxp4zseq4s0rih1selh0d20 * manager1 Accepted Ready Active Reachable Yes +ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS +7ln70fl22uw2dvjn2ft53m3q5 worker2 Down Active +dkp8vy1dq1kxleu9g4u78tlag worker1 Ready Active Reachable +dvfxp4zseq4s0rih1selh0d20 * manager1 Ready Active Leader ``` ## Related information diff --git a/docs/reference/commandline/swarm_update.md b/docs/reference/commandline/swarm_update.md index 8ab715e278..6a5eb7305f 100644 --- a/docs/reference/commandline/swarm_update.md +++ b/docs/reference/commandline/swarm_update.md @@ -14,23 +14,21 @@ parent = "smn_cli" ```markdown Usage: docker swarm update [OPTIONS] -Update the Swarm +Update the swarm Options: - --auto-accept value Auto acceptance policy (worker, manager or none) --cert-expiry duration Validity period for node certificates (default 2160h0m0s) --dispatcher-heartbeat duration Dispatcher heartbeat period (default 5s) --external-ca value Specifications of one or more certificate signing endpoints --help Print usage - --secret string Set secret value needed to accept nodes into cluster --task-history-limit int Task history retention limit (default 10) ``` -Updates a Swarm cluster with new parameter values. This command must target a manager node. +Updates a swarm cluster with new parameter values. This command must target a manager node. ```bash -$ docker swarm update --auto-accept manager +$ docker swarm update --cert-expirty 4000h0m0s ``` ## Related information