Klim

Klim is a CLI to run some helper on Kubernetes.

Commands

List docker images

@Command(name = "list-images", description = "Lists images and libraries found in running pods.")

@RootConfiguration("-")
public record Configuration( // todo: add a state management
         @Property(documentation = "Output format.", defaultValue = "ListImages.Format.HUMAN_LIST") Format format,
         @Property(documentation = "Image listing source.", defaultValue = "ListImages.Source.CLUSTER") Source source,
         @Property(documentation = "Chain with grype scanning, only works for source=REGISTRY.") GrypeConfiguration grype,
         @Property(documentation = "Registry configuration when source=REGISTRY.", defaultValue = "new Registry()") RegistryConfiguration registry,
         @Property(documentation = "Namespace to query (if none all namespaces will be queried) - for source=CLUSTER case.") String namespace,
         @Property(documentation = "How to connect to Kubernetes cluster - for source=CLUSTER case.", defaultValue = "new CliKubernetesConfiguration()") CliKubernetesConfiguration k8s) {
}

Pod resources

@Command(name = "pod-resources", description = "Lists and show resource usages compared to requests/limits set in descriptors.")

@RootConfiguration("-")
public record Configuration(
        @Property(documentation = "Memory unit to use when rendering (respecting format).", defaultValue = "PodResources.Unit.Mi") Unit memoryUnit,
        @Property(documentation = "Should comments be shown.", defaultValue = "true") boolean showComments,
        @Property(documentation = "Output format.", defaultValue = "PodResources.Format.TABLE") Format format,
        @Property(value = "limit-bound", documentation = "Warning limit. If a resource is over this (ratio between 0 and 1) value compared to its limit a warning will be emitted. Negative values disable this check.", defaultValue = "-1.") double limitBound,
        @Property(value = "request-bound", documentation = "Warning limit. If a resource is over this (ratio between 0 and 1) value compared to its request a warning will be emitted. Negative values disable this check.", defaultValue = ".8") double requestBound,
        @Property(documentation = "Metrics API base endpoint (in case it becomes stable to avoid to have to update immediately the binary).", defaultValue = "\"apis/metrics.k8s.io/v1beta1\"") String metricsApi,
        @Property(documentation = "Namespace to query (if none all namespaces will be queried).") String namespace,
        @Property(documentation = "How to connect to Kubernetes cluster.", defaultValue = "new CliKubernetesConfiguration()") CliKubernetesConfiguration k8s) {
}

Build

Pre-requisite: Maven >= 3.8 and Java >= 21.

Release

Build and publish to central:

mvn release:prepare release:perform

Publish documentation on GitHub page:

git checkout -b <release-tag> <release-tag> && mvn clean package -Pgh-pages

Pubish release on GitHub by running in https://github.com/yupiik/yupiik.github.io project:

mvn yupiik-tools:synchronize-github-releases@klim -Psynchronize-github-releases