glab(1)

NAME
glab-cluster-graph - Queries the Kubernetes object graph, using the GitLab Agent for Kubernetes. (EXPERIMENTAL)

SYNOPSIS
glab cluster graph [flags]

DESCRIPTION
This command starts a web server that shows a live view of the Kubernetes object graph in a browser. It uses the GitLab Agent for Kubernetes running in the cluster. It requires:

•   Version 18.1 or later of GitLab and the GitLab Agent.

•   At least the Developer role in the agent project.

•   This command requires a personal access token or project access token for authentication. The token must have the read_api and k8s_proxy scopes.

Leave feedback in issue 7900 ⟨https://gitlab.com/gitlab-org/cli/-/issues/7900⟩.

  Resource filtering
To filter resources, namespaces, and select root objects, use Common Expression Language (CEL) ⟨https://cel.dev/⟩.

object_selector_expression: Filters objects. The expression must return a boolean. These variables are available:

•   obj: The Kubernetes object being evaluated.

•   group: The group of the object.

•   version: The version of the object.

•   resource: The resource name of the object, like pods for the Pod kind.

•   namespace: The namespace of the object.

•   name: The name of the object.

•   labels: The labels of the object.

•   annotations: The annotations of the object.

resource_selector_expression: Filters Kubernetes discovery information to include or exclude resources from the watch request. The expression must return a boolean. These variables are available:

•   group: The group of the object.

•   version: The version of the object.

•   resource: The resource name of the object, like pods for the Pod kind.

•   namespaced: The scope of group, version, and resource. Can be bool, true, or false.

To select root objects, use the --root-expression flag. When set, only objects that are directly or transitively reachable from root objects are shown. This flag uses the same variables as object_selector_expression, and must return a boolean. Multiple values are joined with OR statements. If any match, the object is used as root.

For more information about using label selectors ⟨https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors⟩ and field selectors ⟨https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/⟩ to select namespaces, see the Kubernetes documentation.

  Advanced usage
Apart from high-level ways to construct the query, this command enables you to construct and send the query using all underlying API features. To understand what is possible, and how to do it, see the technical design doc ⟨https://gitlab.com/gitlab-org/cluster-integration/gitlab-agent/-/blob/master/doc/graph_api.md⟩

The user should have permission to access the agent project. For more information, see Grant users Kubernetes access ⟨https://docs.gitlab.com/user/clusters/agent/user_access/⟩.

This feature is an experiment and is not ready for production use. It might be unstable or removed at any time. For more information, see https://docs.gitlab.com/policy/development_stages_support/.

OPTIONS
-a, --agent=0
    The numerical Agent ID to connect to.

--apps[=false]
    Watch deployments, replicasets, daemonsets, and statefulsets in apps/v1 group.

--batch[=false]
    Watch jobs and cronjobs in the batch/v1 group.

--cluster-rbac[=false]
    Watch clusterroles and clusterrolebindings in the rbac.authorization.k8s.io/v1 group.

--core[=false]
    Watch pods, secrets, configmaps, and serviceaccounts in the core/v1 group.

--crd[=false]
    Watch customresourcedefinitions in the apiextensions.k8s.io/v1 group.

--ignore-arc-direction[=false]
    Ignore arc direction when evaluating roots connectivity. GitLab and agent 18.3+ required.

--listen-addr="localhost:0"
    Address to listen on.

--listen-net="tcp"
    Network on which to listen for connections.

--log-watch-request[=false]
    Log watch request to stdout. Helpful for debugging.

-n, --namespace=[]
    Namespaces to watch. If not specified, all namespaces are watched with label and field selectors filtering.

--ns-expression=""
    CEL expression to select namespaces. Evaluated before a namespace is watched and on any updates for the namespace object.

--ns-field-selector=""
    Field selector to select namespaces.

--ns-label-selector=""
    Label selector to select namespaces.

--rbac[=false]
    Watch roles, and rolebindings in the rbac.authorization.k8s.io/v1 group.

-r, --resource=[]
    A list of resources to watch. You can see the list of resources your cluster supports by running 'kubectl api-resources'.

--root-expression=[]
    CEL expression to select root objects. GitLab and agent 18.3+ required.

--stdin[=false]
    Read watch request from standard input.

OPTIONS INHERITED FROM PARENT COMMANDS
-h, --help[=false]
    Show help for this command.

-R, --repo=""
    Select another repository. You can use either OWNER/REPO or GROUP/NAMESPACE/REPO. The full URL or Git URL is also accepted.

EXAMPLE
    # Run the default query for agent 123
    glab cluster graph -R user/project -a 123
    # Show common resources from the core and RBAC groups
    glab cluster graph -R user/project -a 123 --core --rbac
    # Show certain resources
    glab cluster graph -R user/project -a 123 --resource=pods --resource=configmaps
    # Same as above, but more compact
    glab cluster graph -R user/project -a 123 -r={pods,configmaps}
    # Select a certain namespace
    glab cluster graph -R user/project -a 123 -n={my-ns,my-stuff}
    # Select all namespaces that have a certain annotation
    glab cluster graph -R user/project -a 123 --ns-expression='"my-annotation" in annotations'
    # Advanced usage - pass the full query directly via stdin.
    # The query below watches service accounts in all namespaces except for the kube-system.
    Q='{"queries":[{"include":{"resource_selector_expression":"resource == \"serviceaccounts\""}}],"namespaces":{"object_selector_expression":"name != \"kube-system\""}}'
    echo -n "$Q" | glab cluster graph -R user/project -a 123 --stdin
    # Roots filtering
    glab cluster graph -R user/project -a 123 --root-expression 'group == "" && resource == "pods"'

SEE ALSO
glab-cluster(1)