[release-4.11] Gather status of the cephclusters.ceph.rook.io resourc…

…es (openshift#654)

docs/gathered-data.md

@@ -38,6 +38,20 @@ The CRD sizes above are in the raw (uncompressed) state.
 * Id in config: clusterconfig/crds
 
 
+## CephCluster
+
+collects statuses of the`cephclusters.ceph.rook.io` resources
+from Openshift Data Foundation Stack.
+
+API Reference:
+  https://github.com/rook/rook/blob/master/pkg/apis/ceph.rook.io/v1/types.go
+
+* Location in archive: config/storage/<namespace>/<name>.json
+* Id in config: clusterconfig/ceph_cluster
+* Since versions:
+  * 4.12+
+
+
 ## CertificateSigningRequests
 
 collects anonymized CertificateSigningRequests.

docs/insights-archive-sample/config/storage/openshift-storage/ocs-storagecluster-cephcluster.json

@@ -0,0 +1,48 @@
+{
+    "ceph": {
+        "capacity": {},
+        "details": {
+            "MDS_ALL_DOWN": {
+                "message": "1 filesystem is offline",
+                "severity": "HEALTH_ERR"
+            },
+            "MDS_UP_LESS_THAN_MAX": {
+                "message": "1 filesystem is online with fewer MDS than max_mds",
+                "severity": "HEALTH_WARN"
+            },
+            "MGR_DOWN": {
+                "message": "no active mgr",
+                "severity": "HEALTH_WARN"
+            }
+        },
+        "health": "HEALTH_ERR",
+        "lastChanged": "2022-07-18T13:43:24Z",
+        "lastChecked": "2022-07-19T07:29:56Z",
+        "previousHealth": "HEALTH_WARN",
+        "versions": {
+            "mon": {
+                "ceph version 16.2.7-112.el8cp (e18db2ff03ac60c64a18f3315c032b9d5a0a3b8f) pacific (stable)": 3
+            },
+            "overall": {
+                "ceph version 16.2.7-112.el8cp (e18db2ff03ac60c64a18f3315c032b9d5a0a3b8f) pacific (stable)": 3
+            }
+        }
+    },
+    "conditions": [
+        {
+            "lastHeartbeatTime": "2022-07-19T07:29:56Z",
+            "lastTransitionTime": "2022-07-18T13:42:23Z",
+            "message": "Cluster created successfully",
+            "reason": "ClusterCreated",
+            "status": "True",
+            "type": "Ready"
+        }
+    ],
+    "message": "Cluster created successfully",
+    "phase": "Ready",
+    "state": "Created",
+    "version": {
+        "image": "registry.redhat.io/rhceph/rhceph-5-rhel8@sha256:b20a05e20403da9775408fde0f10ba9c81c5610a3814db7786dd43ce4b2aba4a",
+        "version": "16.2.7-112"
+    }
+}

manifests/03-clusterrole.yaml

@@ -263,6 +263,13 @@ rules:
     verbs:
       - get
       - list
+  - apiGroups:
+      - ceph.rook.io
+    resources:
+      - cephclusters
+    verbs:
+      - get
+      - list
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding

pkg/gatherers/clusterconfig/ceph_cluster.go

@@ -0,0 +1,54 @@
+//nolint: dupl
+package clusterconfig
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/openshift/insights-operator/pkg/record"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/klog/v2"
+)
+
+// GatherCephCluster collects statuses of the`cephclusters.ceph.rook.io` resources
+// from Openshift Data Foundation Stack.
+//
+// API Reference:
+//   https://github.com/rook/rook/blob/master/pkg/apis/ceph.rook.io/v1/types.go
+//
+// * Location in archive: config/storage/<namespace>/<name>.json
+// * Id in config: clusterconfig/ceph_cluster
+// * Since versions:
+//   * 4.12+
+func (g *Gatherer) GatherCephCluster(ctx context.Context) ([]record.Record, []error) {
+	gatherDynamicClient, err := dynamic.NewForConfig(g.gatherKubeConfig)
+	if err != nil {
+		return nil, []error{err}
+	}
+
+	return gatherCephCluster(ctx, gatherDynamicClient)
+}
+
+func gatherCephCluster(ctx context.Context, dynamicClient dynamic.Interface) ([]record.Record, []error) {
+	cephClusterList, err := dynamicClient.Resource(cephClustereResource).List(ctx, metav1.ListOptions{})
+	if errors.IsNotFound(err) {
+		return nil, nil
+	}
+	if err != nil {
+		klog.V(2).Infof("Unable to list %s resource due to: %s", gatherCephCluster, err)
+		return nil, []error{err}
+	}
+
+	var records []record.Record
+	for i := range cephClusterList.Items {
+		item := &cephClusterList.Items[i]
+		status := item.Object["status"]
+		records = append(records, record.Record{
+			Name: fmt.Sprintf("config/storage/%s/%s", item.GetNamespace(), item.GetName()),
+			Item: record.JSONMarshaller{Object: status},
+		})
+	}
+	return records, nil
+}

pkg/gatherers/clusterconfig/ceph_cluster_test.go

@@ -0,0 +1,68 @@
+package clusterconfig
+
+import (
+	"context"
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/runtime/serializer/yaml"
+	dynamicfake "k8s.io/client-go/dynamic/fake"
+)
+
+func Test_GatherCephCluster(t *testing.T) {
+	var cephClusterYAML = `
+apiVersion: ceph.rook.io/v1
+kind: CephCluster
+metadata:
+  name: ocs-storagecluster-cephcluster
+  namespace: openshift-storage
+status:
+  attribute1: value1
+  ceph:
+    phase: Ready
+    health: HEALTH_ERROR
+`
+
+	dynamicClient := dynamicfake.NewSimpleDynamicClientWithCustomListKinds(runtime.NewScheme(), map[schema.GroupVersionResource]string{
+		cephClustereResource: "CephClustersList",
+	})
+	decUnstructured := yaml.NewDecodingSerializer(unstructured.UnstructuredJSONScheme)
+	testCephCluster := &unstructured.Unstructured{}
+
+	_, _, err := decUnstructured.Decode([]byte(cephClusterYAML), nil, testCephCluster)
+	if err != nil {
+		t.Fatal("unable to decode cephcluster ", err)
+	}
+	_, err = dynamicClient.Resource(cephClustereResource).
+		Namespace("openshift-storage").
+		Create(context.Background(), testCephCluster, metav1.CreateOptions{})
+	if err != nil {
+		t.Fatal("unable to create fake cephcluster ", err)
+	}
+
+	records, errs := gatherCephCluster(context.Background(), dynamicClient)
+	assert.Len(t, errs, 0, "unexpected errors when gathering CephCluster resource")
+	assert.Len(t, records, 1)
+
+	recordData, err := records[0].Item.Marshal()
+	assert.NoError(t, err)
+	var recordedCephCluster map[string]interface{}
+	err = json.Unmarshal(recordData, &recordedCephCluster)
+	assert.NoError(t, err)
+
+	a1, ok, err := unstructured.NestedString(recordedCephCluster, "attribute1")
+	assert.NoError(t, err)
+	assert.True(t, ok)
+	assert.Equal(t, "value1", a1)
+
+	ceph, ok, err := unstructured.NestedMap(recordedCephCluster, "ceph")
+	assert.NoError(t, err)
+	assert.True(t, ok)
+	assert.Equal(t, "Ready", ceph["phase"])
+	assert.Equal(t, "HEALTH_ERROR", ceph["health"])
+}

pkg/gatherers/clusterconfig/clusterconfig_gatherer.go

@@ -82,6 +82,7 @@ var gatheringFunctions = map[string]gathererFuncPtr{
 	"kube_controller_manager_logs":      (*Gatherer).GatherKubeControllerManagerLogs,
 	"overlapping_namespace_uids":        (*Gatherer).GatherNamespacesWithOverlappingUIDs,
 	"support_secret":                    (*Gatherer).GatherSupportSecret,
+	"ceph_cluster":                      (*Gatherer).GatherCephCluster,
 }
 
 func New(

pkg/gatherers/clusterconfig/const.go

@@ -52,11 +52,12 @@ var (
 	openshiftStorageResource = schema.GroupVersionResource{
 		Group: "ocs.openshift.io", Version: "v1", Resource: "storageclusters",
 	}
-
+	cephClustereResource = schema.GroupVersionResource{
+		Group: "ceph.rook.io", Version: "v1", Resource: "cephclusters",
+	}
 	jaegerResource = schema.GroupVersionResource{
 		Group: "jaegertracing.io", Version: "v1", Resource: "jaegers",
 	}
-
 	costManagementMetricsConfigResource = schema.GroupVersionResource{
 		Group: "costmanagement-metrics-cfg.openshift.io", Version: "v1beta1", Resource: "costmanagementmetricsconfigs",
 	}