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Antctl Multi-cluster commands

Starting from version 1.6.0, Antrea supports the antctl mc commands, which can collect information from a leader cluster for troubleshooting Antrea Multi-cluster issues, deploy Antrea Multi-cluster and set up ClusterSets in both leader and member clusters. The antctl mc get command is supported since Antrea v1.6.0, while other commands are supported since v1.8.0. These commands cannot run inside the antrea-controller, antrea-agent or antrea-mc-controller Pods. antctl needs a kubeconfig file to access the target cluster’s API server, and it will look for the kubeconfig file at $HOME/.kube/config by default. You can select a different file by setting the KUBECONFIG environment variable or with the --kubeconfig option of antctl.

antctl mc get

antctl mc get clusterset (or get clustersets) command prints all ClusterSets, a specified Clusterset, or the ClusterSet in a specified Namespace.
antctl mc get resourceimport (or get resourceimports, get ri) command prints all ResourceImports, a specified ResourceImport, or ResourceImports in a specified Namespace.
antctl mc get resourceexport (or get resourceexports, get re) command prints all ResourceExports, a specified ResourceExport, or ResourceExports in a specified Namespace.
antctl mc get joinconfig command prints member cluster join parameters of the ClusterSet in a specified leader cluster Namespace.
antctl mc get membertoken (or get membertokens) command prints all member tokens, a specified token, or member tokens in a specified Namespace. The command is supported only on a leader cluster.

Using the json or yaml antctl output format can print more information of ClusterSet, ResourceImport, and ResourceExport than using the default table output format.

antctl mc get clusterset [NAME] [-n NAMESPACE] [-o json|yaml] [-A]
antctl mc get resourceimport [NAME] [-n NAMESPACE] [-o json|yaml] [-A]
antctl mc get resourceexport [NAME] [-n NAMESPACE] [-clusterid CLUSTERID] [-o json|yaml] [-A]
antctl mc get joinconfig [--member-token TOKEN_NAME] [-n NAMESPACE]
antctl mc get membertoken [NAME] [-n NAMESPACE] [-o json|yaml] [-A]

To see the usage examples of these commands, you may also run antctl mc get [subcommand] --help.

antctl mc create

antctl mc create command creates a token for member clusters to join a ClusterSet. The command will also create a Secret to store the token, as well as a ServiceAccount and a RoleBinding. The --output-file option saves the member token Secret manifest to a file.

anctcl mc create membertoken NAME -n NAMESPACE [-o OUTPUT_FILE]

To see the usage examples of these commands, you may also run antctl mc create [subcommand] --help.

antctl mc delete

antctl mc delete command deletes a member token of a ClusterSet. The command will delete the corresponding Secret, ServiceAccount and RoleBinding if they exist.

anctcl mc delete membertoken NAME -n NAMESPACE

To see the usage examples of these commands, you may also run antctl mc delete [subcommand] --help.

antctl mc deploy

antctl mc deploy command deploys Antrea Multi-cluster Controller to a leader or member cluster.

antctl mc deploy leadercluster command deploys Antrea Multi-cluster Controller to a leader cluster and imports all the Antrea Multi-cluster CRDs.
antctl mc deploy membercluster command deploys Antrea Multi-cluster Controller to a member cluster and imports all the Antrea Multi-cluster CRDs.

antctl mc deploy leadercluster -n NAMESPACE [--antrea-version ANTREA_VERSION] [-f PATH_TO_MANIFEST]
antctl mc deploy membercluster -n NAMESPACE [--antrea-version ANTREA_VERSION] [-f PATH_TO_MANIFEST]

To see the usage examples of these commands, you may also run antctl mc deploy [subcommand] --help.

antctl mc init

antctl mc init command initializes an Antrea Multi-cluster ClusterSet in a leader cluster. It will create a ClusterSet and two ClusterClaims for the leader cluster. If the -j|--join-config-file option is specified, the ClusterSet join parameters will be saved to the specified file, which can be used in the antctl mc join command for a member cluster to join the ClusterSet.

antctl mc init -n NAMESPACE --clusterset CLUSTERSET_ID --clusterid CLUSTERID [--create-token] [-j JOIN_CONFIG_FILE]

To see the usage examples of this command, you may also run antctl mc init --help.

antctl mc join

antctl mc join command lets a member cluster join an existing Antrea Multi-cluster ClusterSet. It will create a ClusterSet and ClusterClaims for the member cluster. Users can use command line options or a config file (which can be the output file of the anctl mc init command) to specify the ClusterSet join arguments.

When the config file is provided, the command line options may be overridden by the file. A token is needed for a member cluster to access the leader cluster API server. Users can either specify a pre-created token Secret with the --token-secret-name option, or pass a Secret manifest to create the Secret with either the --token-secret-file option or the config file.

antctl mc join --clusterset=CLUSTERSET_ID \
                   --clusterid=CLUSTER_ID \
                   --namespace=[MEMBER_NAMESPACE] \
                   --leader-clusterid=LEADER_CLUSTER_ID \
                   --leader-namespace=LEADER_NAMESPACE \
                   --leader-apiserver=LEADER_APISERVER \
                   --token-secret-name=[TOKEN_SECRET_NAME] \
                   --token-secret-file=[TOKEN_SECRET_FILE]

antctl mc join --config-file JOIN_CONFIG_FILE [--clusterid=CLUSTER_ID] [--token-secret-name=TOKEN_SECRET_NAME] [--token-secret-file=TOKEN_SECRET_FILE]

Below is a config file example:

apiVersion: multicluster.antrea.io/v1alpha1
kind: ClusterSetJoinConfig
clusterSetID: clusterset1
clusterID: cluster-east
namespace: kube-system
leaderClusterID: cluster-north
leaderNamespace: antrea-multicluster
leaderAPIServer: https://172.18.0.3:6443
tokenSecretName: cluster-east-token

antctl mc leave

antctl mc leave command lets a member cluster leave a ClusterSet. It will delete the ClusterSet and ClusterClaims and other resources created by antctl for the member cluster.

antctl mc leave --clusterset CLUSTERSET_ID --namespace [NAMESPACE]

antctl mc destroy

antctl mc destroy command can destroy an Antrea Multi-cluster ClusterSet in a leader cluster. It will delete the ClusterSet and ClusterClaims and other resources created by antctl for the leader cluster.

antctl mc destroy --clusterset=CLUSTERSET_ID --namespace NAMESPACE