Cluster Configuration Management

/**
 * Access to OpenShift Configuration API Group (config.openshift.io/v1)
 * Cluster-wide configuration resources
 */
OpenShiftConfigAPIGroupDSL config();

interface OpenShiftConfigAPIGroupDSL {
    /** API server configuration and settings */
    NonNamespaceOperation<APIServer, APIServerList, Resource<APIServer>> apiServers();
    
    /** Cluster authentication configuration */
    NonNamespaceOperation<Authentication, AuthenticationList, Resource<Authentication>> authentications();
    
    /** Cluster DNS configuration */
    NonNamespaceOperation<DNS, DNSList, Resource<DNS>> dnses();
    
    /** Cluster networking configuration */
    NonNamespaceOperation<Network, NetworkList, Resource<Network>> networks();
    
    /** Cluster proxy configuration */
    NonNamespaceOperation<Proxy, ProxyList, Resource<Proxy>> proxies();
    
    /** Infrastructure platform configuration */
    NonNamespaceOperation<Infrastructure, InfrastructureList, Resource<Infrastructure>> infrastructures();
    
    /** OAuth authentication configuration */
    NonNamespaceOperation<OAuth, OAuthList, Resource<OAuth>> oAuths();
}

// Get cluster authentication configuration
Authentication auth = client.config().authentications().withName("cluster").get();

// Get cluster DNS configuration  
DNS dns = client.config().dnses().withName("cluster").get();
String clusterDomain = dns.getSpec().getClusterDomain();

// Get network configuration
Network network = client.config().networks().withName("cluster").get();
String serviceNetwork = network.getSpec().getServiceNetwork().get(0);

// Get infrastructure details
Infrastructure infra = client.config().infrastructures().withName("cluster").get();
String platform = infra.getStatus().getPlatform();

interface OpenShiftConfigAPIGroupDSL {
    /** Cluster build configuration and defaults */
    NonNamespaceOperation<Build, BuildList, Resource<Build>> builds();
    
    /** Image configuration and registry settings */
    NonNamespaceOperation<Image, ImageList, Resource<Image>> images();
    
    /** Image content policies and restrictions */
    NonNamespaceOperation<ImageContentPolicy, ImageContentPolicyList, Resource<ImageContentPolicy>> imageContentPolicies();
    
    /** Image digest mirror sets for registry mirroring */  
    NonNamespaceOperation<ImageDigestMirrorSet, ImageDigestMirrorSetList, Resource<ImageDigestMirrorSet>> imageDigestMirrorSets();
    
    /** Image tag mirror sets for registry mirroring */
    NonNamespaceOperation<ImageTagMirrorSet, ImageTagMirrorSetList, Resource<ImageTagMirrorSet>> imageTagMirrorSets();
}

// Get cluster build configuration
Build buildConfig = client.config().builds().withName("cluster").get();

// Get image configuration
Image imageConfig = client.config().images().withName("cluster").get();
String externalRegistryHostname = imageConfig.getStatus().getExternalRegistryHostnames().get(0);

// List image content policies
ImageContentPolicyList policies = client.config().imageContentPolicies().list();

interface OpenShiftConfigAPIGroupDSL {
    /** Ingress controller configuration */
    NonNamespaceOperation<Ingress, IngressList, Resource<Ingress>> ingresses();
    
    /** Web console configuration */
    NonNamespaceOperation<Console, ConsoleList, Resource<Console>> consoles();
}

// Get ingress configuration
Ingress ingress = client.config().ingresses().withName("cluster").get();
String appsDomain = ingress.getSpec().getDomain();

// Get console configuration
Console console = client.config().consoles().withName("cluster").get();
String consoleURL = console.getStatus().getConsoleURL();

interface OpenShiftConfigAPIGroupDSL {
    /** Feature gates for enabling/disabling cluster features */
    NonNamespaceOperation<FeatureGate, FeatureGateList, Resource<FeatureGate>> featureGates();
    
    /** Scheduler configuration */
    NonNamespaceOperation<Scheduler, SchedulerList, Resource<Scheduler>> schedulers();
    
    /** OperatorHub configuration */
    NonNamespaceOperation<OperatorHub, OperatorHubList, Resource<OperatorHub>> operatorHubs();
    
    /** Project configuration and defaults */
    NonNamespaceOperation<Project, ProjectList, Resource<Project>> projects();
}

// Get feature gate configuration
FeatureGate featureGate = client.config().featureGates().withName("cluster").get();
Set<String> enabledFeatures = featureGate.getSpec().getFeatureSet();

// Get scheduler configuration
Scheduler scheduler = client.config().schedulers().withName("cluster").get();

// Get OperatorHub configuration
OperatorHub operatorHub = client.config().operatorHubs().withName("cluster").get();
boolean disableAllDefaultSources = operatorHub.getSpec().getDisableAllDefaultSources();

interface OpenShiftConfigAPIGroupDSL {
    /** Cluster version and update information */
    NonNamespaceOperation<ClusterVersion, ClusterVersionList, Resource<ClusterVersion>> clusterVersions();
    
    /** Cluster operator status and health */
    NonNamespaceOperation<ClusterOperator, ClusterOperatorList, Resource<ClusterOperator>> clusterOperators();
}

// Get cluster version
ClusterVersion version = client.config().clusterVersions().withName("version").get();
String currentVersion = version.getStatus().getDesired().getVersion();
List<Update> availableUpdates = version.getStatus().getAvailableUpdates();

// List cluster operators and their status
ClusterOperatorList operators = client.config().clusterOperators().list();
for (ClusterOperator operator : operators.getItems()) {
    String name = operator.getMetadata().getName();
    List<ClusterOperatorStatusCondition> conditions = operator.getStatus().getConditions();
    
    boolean available = conditions.stream()
        .anyMatch(c -> "Available".equals(c.getType()) && "True".equals(c.getStatus()));
    
    System.out.println(name + " available: " + available);
}

// Get specific operator status
ClusterOperator ingressOperator = client.config().clusterOperators()
    .withName("ingress")
    .get();

try (OpenShiftClient client = new KubernetesClientBuilder().build().adapt(OpenShiftClient.class)) {
    // Get overall cluster information
    Infrastructure infra = client.config().infrastructures().withName("cluster").get();
    System.out.println("Platform: " + infra.getStatus().getPlatform());
    System.out.println("Region: " + infra.getStatus().getPlatformStatus().getAws().getRegion());
    
    // Check cluster version and available updates
    ClusterVersion version = client.config().clusterVersions().withName("version").get();
    System.out.println("Current version: " + version.getStatus().getDesired().getVersion());
    
    // Check DNS and networking
    DNS dns = client.config().dnses().withName("cluster").get();
    Network network = client.config().networks().withName("cluster").get();
    
    System.out.println("Cluster domain: " + dns.getSpec().getClusterDomain());
    System.out.println("Service network: " + network.getSpec().getServiceNetwork());
    
    // Check ingress configuration
    Ingress ingress = client.config().ingresses().withName("cluster").get();
    System.out.println("Apps domain: " + ingress.getSpec().getDomain());
}

// Check and modify feature gates
FeatureGate featureGate = client.config().featureGates().withName("cluster").get();

// Create custom feature gate configuration (typically not recommended)
FeatureGate customFeatureGate = new FeatureGateBuilder()
    .withMetadata(new ObjectMetaBuilder().withName("cluster").build())
    .withSpec(new FeatureGateSpecBuilder()
        .withFeatureSet("CustomNoUpgrade")
        .build())
    .build();

// Note: Modifying feature gates can affect cluster stability
// client.config().featureGates().createOrReplace(customFeatureGate);