when mhc is managed create an alert for frequent remediation (#2123)

README.md

@@ -116,11 +116,7 @@ questions or comments.
 
     * machineset: Ensures that a minimum of two worker replicas are met.
 
-    * machinehealthcheck: Ensures the MachineHealthCheck resource is running as configured so that at most one worker node at a time is automatically
-      reconciled when not ready for at least 5 minutes.
-        * The CR will only be applied when both `aro.machinehealthcheck.managed` and `aro.machinehealthcheck.enabled` are set to `"true"`.
-        * When `aro.machinehealthcheck.enabled` is `"false"` and `aro.machinehealthcheck.managed` is `"false"` the CR will be removed from the cluster.
-        * If `aro.machinehealthcheck.enabled` is `"false"` no actions will be taken to modify the CR.
+    * machinehealthcheck: Ensures the MachineHealthCheck resource is running as configured. See [machinehealthcheck/doc.go](pkg/operator/controllers/machinehealthcheck/doc.go)
         * More information around the MHC CR can be found [in openshift documentation of MHC](https://docs.openshift.com/container-platform/4.9/machine_management/deploying-machine-health-checks.html)
 
     * monitoring: Ensures that the OpenShift monitoring configuration in the `openshift-monitoring` namespace is consistent and immutable.

go.mod

@@ -48,6 +48,7 @@ require (
 	github.com/openshift/machine-config-operator v3.11.0+incompatible
 	github.com/pires/go-proxyproto v0.6.2
 	github.com/pkg/errors v0.9.1
+	github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.48.1
 	github.com/prometheus/client_golang v1.12.1
 	github.com/prometheus/common v0.33.0
 	github.com/sirupsen/logrus v1.8.1

go.sum

@@ -2348,6 +2348,7 @@ github.com/proglottis/gpgme v0.1.1/go.mod h1:fPbW/EZ0LvwQtH8Hy7eixhp1eF3G39dtx7G
 github.com/prometheus-community/prom-label-proxy v0.2.0/go.mod h1:XdjyZg7LCbCC5FADHtpgNp6kQ0W9beXVGfmcvndMj5Y=
 github.com/prometheus-operator/prometheus-operator v0.48.1/go.mod h1:lXJz0R74XkhfLwsw5mIeLPJZOVIQp6kQyMyMjOU+MWY=
 github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.44.1/go.mod h1:3WYi4xqXxGGXWDdQIITnLNmuDzO5n6wYva9spVhR4fg=
+github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.48.1 h1:OGC7+ktZ6h8xI99VB6i8iuiXecdhUmwto9vbGzoVMac=
 github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.48.1/go.mod h1:3WYi4xqXxGGXWDdQIITnLNmuDzO5n6wYva9spVhR4fg=
 github.com/prometheus-operator/prometheus-operator/pkg/client v0.48.1/go.mod h1:k4BrWlVQQsvBiTcDnKEMgyh/euRxyxgrHdur/ZX/sdA=
 github.com/prometheus/alertmanager v0.20.0/go.mod h1:9g2i48FAyZW6BtbsnvHtMHQXl2aVtrORKwKVCQ+nbrg=

hack/validate-imports/validate-imports.go

@@ -157,6 +157,8 @@ func acceptableNames(path string) []string {
 		return []string{"coreosarch"}
 	case "github.com/openshift/installer/pkg/rhcos":
 		return []string{"rhcospkg"}
+	case "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1":
+		return []string{"monitoringv1"}
 	case "golang.org/x/crypto/ssh":
 		return []string{"", "cryptossh"}
 	case "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1":

pkg/operator/controllers/machinehealthcheck/bindata.go

@@ -1,6 +1,7 @@
 // Code generated for package machinehealthcheck by go-bindata DO NOT EDIT. (@generated)
 // sources:
 // staticresources/machinehealthcheck.yaml
+// staticresources/mhcremediationalert.yaml
 package machinehealthcheck
 
 import (
@@ -97,6 +98,26 @@ func machinehealthcheckYaml() (*asset, error) {
 	return a, nil
 }
 
+var _mhcremediationalertYaml = []byte("\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\x74\x91\x4d\x8b\x14\x4d\x10\x84\xef\xfd\x2b\xe2\xf8\xbe\x87\x5e\x5d\x0f\x22\x75\x10\x44\x84\xbd\x2c\xc8\x08\x5e\x44\x86\x9c\xea\x70\xaa\x98\xfa\x68\x32\xb3\x67\xdd\x7f\x2f\xdd\xd3\xea\x5e\xcc\x63\x55\x3e\x11\x4f\x51\x32\xe7\xaf\x54\xcb\xbd\x05\xd4\xde\xb2\x77\xcd\xed\x7c\x17\xbb\xb2\xdb\x5d\xec\xf5\xd5\xf5\x7e\xb8\xe4\x36\x05\x7c\xd6\x5e\xe9\x89\x8b\x1d\x96\xc2\xa1\xd2\x65\x12\x97\x30\x00\x4d\x2a\x03\x6a\x8a\xa3\xb2\x72\xca\xe2\xb9\xb7\x51\x0a\xd5\xf7\x5b\x9b\x25\x32\xa0\xcf\x6c\x96\xf2\x0f\x1f\xab\xc4\x94\x1b\x47\x99\xf3\x00\x14\x39\xb1\xd8\x1a\x05\xcc\x7f\x7a\x02\x2e\xef\x6c\x3b\xd3\x5e\x18\xb0\x05\x8e\xba\x14\xda\x60\x33\xe3\xba\x7f\xd6\xbe\xcc\x1b\x39\xee\x1a\xa6\x1c\xff\xa5\x02\x6c\xf4\xad\x68\xbc\x05\x06\x7c\x39\x7c\x7a\xbc\xe9\x3c\x50\x8a\xa7\x8f\x89\xf1\x72\xf8\x8b\x1f\xc4\xf9\x90\xcf\x69\xa3\x00\xfe\x9c\x35\x20\xb7\xa8\x14\xe3\x7f\x55\xe6\x7c\xdc\x9f\x93\x36\x3e\xae\xfc\xf1\x45\xff\xd1\x96\x18\x69\x76\xf4\xee\x52\xf0\xed\xed\xeb\xfa\xfd\x7f\xbc\xc7\xfd\x9e\xf8\xa1\xb5\xee\xdb\xe6\xae\xb6\xce\x23\xcd\xe4\xcc\x00\x3c\x75\xbd\x50\xd1\xfa\x44\x43\x92\x2b\x71\x22\x1b\x7e\x17\x70\xc2\x1b\x74\x45\xed\x4a\x78\xae\x34\xe4\x06\x4f\x44\x11\x73\xa4\xbe\x28\x3c\x65\x43\x95\x67\xe4\x36\xe5\x28\x4e\x48\xc3\xd2\xcc\xe5\x54\xb8\x15\x94\x2e\x13\x74\x69\x2d\xb7\x33\xfa\x8d\x8f\x65\x31\xa7\xee\x4a\x2f\x3f\x69\x1d\xe3\x95\x9a\xfd\x39\xe0\x49\x74\xc5\x86\x5f\x01\x00\x00\xff\xff\x76\x45\x90\xe0\x4e\x02\x00\x00")
+
+func mhcremediationalertYamlBytes() ([]byte, error) {
+	return bindataRead(
+		_mhcremediationalertYaml,
+		"mhcremediationalert.yaml",
+	)
+}
+
+func mhcremediationalertYaml() (*asset, error) {
+	bytes, err := mhcremediationalertYamlBytes()
+	if err != nil {
+		return nil, err
+	}
+
+	info := bindataFileInfo{name: "mhcremediationalert.yaml", size: 0, mode: os.FileMode(0), modTime: time.Unix(0, 0)}
+	a := &asset{bytes: bytes, info: info}
+	return a, nil
+}
+
 // Asset loads and returns the asset for the given name.
 // It returns an error if the asset could not be found or
 // could not be loaded.
@@ -150,6 +171,7 @@ func AssetNames() []string {
 // _bindata is a table, holding each asset generator, mapped to its name.
 var _bindata = map[string]func() (*asset, error){
 	"machinehealthcheck.yaml":  machinehealthcheckYaml,
+	"mhcremediationalert.yaml": mhcremediationalertYaml,
 }
 
 // AssetDir returns the file names below a certain
@@ -194,6 +216,7 @@ type bintree struct {
 
 var _bintree = &bintree{nil, map[string]*bintree{
 	"machinehealthcheck.yaml":  {machinehealthcheckYaml, map[string]*bintree{}},
+	"mhcremediationalert.yaml": {mhcremediationalertYaml, map[string]*bintree{}},
 }}
 
 // RestoreAsset restores an asset under the given directory

pkg/operator/controllers/machinehealthcheck/doc.go

@@ -5,8 +5,9 @@ package machinehealthcheck
 
 /*
 
-The controller in this package aims to ensure that MachineHealthCheck objects
-exist and are correctly configured to automatically mitigate non-ready worker nodes.
+The controller in this package aims to ensure the ARO MachineHealthCheck CR and MHC Remediation Alert
+exist and are correctly configured to automatically mitigate non-ready worker nodes and create an in-cluster alert
+when remediation is occuring frequently.
 
 There are two flags which control the operations performed by the controller:
 
@@ -15,10 +16,11 @@ aro.machinehealthcheck.enabled:
 - When set to true, the controller continues on to check the managed flag
 
 aro.machinehealthcheck.managed
-- When set to false, the controller will attempt to remove the aro-machinehealthcheck CR from the cluster.
+- When set to false, the controller will attempt to remove the aro-machinehealthcheck CR and the MHC Remediation alert from the cluster.
   This should effectively disable the MHC we deploy and prevent the automatic reconciliation of nodes.
-- When set to true, the controller will deploy/overwrite the aro-machinehealthcheck CR to the cluster.
-  This enables the cluster to self heal when at most 1 worker node goes not ready for at least 5 minutes.
+- When set to true, the controller will deploy/overwrite the aro-machinehealthcheck CR and the MHC Remediation alert to the cluster.
+  This enables the cluster to self heal when at most 1 worker node goes not ready for at least 5 minutes and alert when remediation
+  occurs 2 or more times within an hour.
 
 The aro-machinehealth check is configured in a way that if 2 worker nodes go not ready it will not take any action.
 More information about how the MHC works can be found here:

pkg/operator/controllers/machinehealthcheck/machinehealthcheck_controller.go

@@ -52,10 +52,16 @@ func (r *Reconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.
 		if err != nil {
 			return reconcile.Result{RequeueAfter: time.Hour}, err
 		}
+
+		err = r.dh.EnsureDeleted(ctx, "PrometheusRule", "openshift-machine-api", "mhc-remediation-alert")
+		if err != nil {
+			return reconcile.Result{RequeueAfter: time.Hour}, err
+		}
 		return reconcile.Result{}, nil
 	}
 
 	var resources []kruntime.Object
+
 	// this loop prevents us from hard coding resource strings
 	// and ensures all static resources are accounted for.
 	for _, assetName := range AssetNames() {

pkg/operator/controllers/machinehealthcheck/machinehealthcheck_controller_test.go

@@ -60,7 +60,7 @@ func TestReconciler(t *testing.T) {
 			wantErr: "",
 		},
 		{
-			name: "Managed Feature Flag is false: ensure mhc is deleted",
+			name: "Managed Feature Flag is false: ensure mhc and its alert are deleted",
 			arocli: arofake.NewSimpleClientset(&arov1alpha1.Cluster{
 				ObjectMeta: metav1.ObjectMeta{
 					Name: arov1alpha1.SingletonClusterName,
@@ -74,6 +74,7 @@ func TestReconciler(t *testing.T) {
 			}),
 			mocks: func(mdh *mock_dynamichelper.MockInterface) {
 				mdh.EXPECT().EnsureDeleted(gomock.Any(), "MachineHealthCheck", "openshift-machine-api", "aro-machinehealthcheck").Times(1)
+				mdh.EXPECT().EnsureDeleted(gomock.Any(), "PrometheusRule", "openshift-machine-api", "mhc-remediation-alert").Times(1)
 			},
 			wantErr: "",
 		},
@@ -96,6 +97,26 @@ func TestReconciler(t *testing.T) {
 			wantErr:          "Could not delete mhc",
 			wantRequeueAfter: time.Hour,
 		},
+		{
+			name: "Managed Feature Flag is false: mhc deletes but mhc alert fails to delete, an error is returned",
+			arocli: arofake.NewSimpleClientset(&arov1alpha1.Cluster{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: arov1alpha1.SingletonClusterName,
+				},
+				Spec: arov1alpha1.ClusterSpec{
+					OperatorFlags: arov1alpha1.OperatorFlags{
+						enabled: strconv.FormatBool(true),
+						managed: strconv.FormatBool(false),
+					},
+				},
+			}),
+			mocks: func(mdh *mock_dynamichelper.MockInterface) {
+				mdh.EXPECT().EnsureDeleted(gomock.Any(), "MachineHealthCheck", "openshift-machine-api", "aro-machinehealthcheck").Times(1)
+				mdh.EXPECT().EnsureDeleted(gomock.Any(), "PrometheusRule", "openshift-machine-api", "mhc-remediation-alert").Return(errors.New("Could not delete mhc alert"))
+			},
+			wantErr:          "Could not delete mhc alert",
+			wantRequeueAfter: time.Hour,
+		},
 		{
 			name: "Managed Feature Flag is true: dynamic helper ensures resources",
 			arocli: arofake.NewSimpleClientset(&arov1alpha1.Cluster{
@@ -142,10 +163,7 @@ func TestReconciler(t *testing.T) {
 			tt.mocks(mdh)
 
 			ctx := context.Background()
-			r := &Reconciler{
-				arocli: tt.arocli,
-				dh:     mdh,
-			}
+			r := NewReconciler(tt.arocli, mdh)
 			request := ctrl.Request{}
 			request.Name = "cluster"
 

pkg/operator/controllers/machinehealthcheck/staticresources/mhcremediationalert.yaml

@@ -0,0 +1,18 @@
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: mhc-remediation-alert
+  namespace: openshift-machine-api
+  labels:
+    prometheus: k8s
+    role: alert-rules
+spec:
+  groups:
+  - name: sre-mhc-remediation-alert
+    rules:
+    - alert: SREMachineHealthCheckRemediationRateHigh
+      expr: increase(mapi_machinehealthcheck_remediation_success_total [60m]) > 1
+      Annotations:
+        Message:  worker nodes have been remediated 2 or more times in the last hour this may indicate an unstable workload running on the cluster
+      labels:
+        severity: warning

pkg/util/scheme/scheme.go

@@ -9,6 +9,7 @@ import (
 	machinev1beta1 "github.com/openshift/api/machine/v1beta1"
 	securityv1 "github.com/openshift/api/security/v1"
 	mcv1 "github.com/openshift/machine-config-operator/pkg/apis/machineconfiguration.openshift.io/v1"
+	monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	rbacv1 "k8s.io/api/rbac/v1"
@@ -39,7 +40,7 @@ func init() {
 	utilruntime.Must(rbacv1defaults.RegisterDefaults(scheme.Scheme))
 	utilruntime.Must(machinev1beta1.AddToScheme(scheme.Scheme))
 	utilruntime.Must(consolev1.AddToScheme(scheme.Scheme))
-
+	utilruntime.Must(monitoringv1.AddToScheme(scheme.Scheme))
 	// AzureMachineProviderSpec is not registered by default
 	scheme.Scheme.AddKnownTypes(machinev1beta1.GroupVersion, &machinev1beta1.AzureMachineProviderSpec{})
 }

vendor/github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/LICENSE

@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

vendor/github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/register.go

@@ -0,0 +1,19 @@
+// Copyright 2018 The prometheus-operator Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package monitoring
+
+const (
+	GroupName = "monitoring.coreos.com"
+)

vendor/github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1/doc.go

@@ -0,0 +1,18 @@
+// Copyright 2017 The prometheus-operator Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +k8s:deepcopy-gen=package
+// +groupName=monitoring.coreos.com
+
+package v1

vendor/github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1/register.go

@@ -0,0 +1,67 @@
+// Copyright 2018 The prometheus-operator Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+
+	"github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring"
+)
+
+// SchemeGroupVersion is the group version used to register these objects
+var SchemeGroupVersion = schema.GroupVersion{Group: monitoring.GroupName, Version: Version}
+
+// Resource takes an unqualified resource and returns a Group qualified GroupResource
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+var (
+	// localSchemeBuilder and AddToScheme will stay in k8s.io/kubernetes.
+	SchemeBuilder      runtime.SchemeBuilder
+	localSchemeBuilder = &SchemeBuilder
+	AddToScheme        = localSchemeBuilder.AddToScheme
+)
+
+func init() {
+	// We only register manually written functions here. The registration of the
+	// generated functions takes place in the generated files. The separation
+	// makes the code compile even when the generated files are missing.
+	localSchemeBuilder.Register(addKnownTypes)
+}
+
+// Adds the list of known types to api.Scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&Prometheus{},
+		&PrometheusList{},
+		&ServiceMonitor{},
+		&ServiceMonitorList{},
+		&PodMonitor{},
+		&PodMonitorList{},
+		&Probe{},
+		&ProbeList{},
+		&Alertmanager{},
+		&AlertmanagerList{},
+		&PrometheusRule{},
+		&PrometheusRuleList{},
+		&ThanosRuler{},
+		&ThanosRulerList{},
+	)
+	metav1.AddToGroupVersion(scheme, SchemeGroupVersion)
+	return nil
+}

vendor/github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1/thanos_types.go

@@ -0,0 +1,220 @@
+// Copyright 2020 The prometheus-operator Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+import (
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+const (
+	ThanosRulerKind    = "ThanosRuler"
+	ThanosRulerName    = "thanosrulers"
+	ThanosRulerKindKey = "thanosrulers"
+)
+
+// ThanosRuler defines a ThanosRuler deployment.
+// +genclient
+// +k8s:openapi-gen=true
+// +kubebuilder:resource:categories="prometheus-operator"
+type ThanosRuler struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+	// Specification of the desired behavior of the ThanosRuler cluster. More info:
+	// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+	Spec ThanosRulerSpec `json:"spec"`
+	// Most recent observed status of the ThanosRuler cluster. Read-only. Not
+	// included when requesting from the apiserver, only from the ThanosRuler
+	// Operator API itself. More info:
+	// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+	Status *ThanosRulerStatus `json:"status,omitempty"`
+}
+
+// ThanosRulerList is a list of ThanosRulers.
+// +k8s:openapi-gen=true
+type ThanosRulerList struct {
+	metav1.TypeMeta `json:",inline"`
+	// Standard list metadata
+	// More info: https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#metadata
+	metav1.ListMeta `json:"metadata,omitempty"`
+	// List of Prometheuses
+	Items []*ThanosRuler `json:"items"`
+}
+
+// ThanosRulerSpec is a specification of the desired behavior of the ThanosRuler. More info:
+// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+// +k8s:openapi-gen=true
+type ThanosRulerSpec struct {
+	// PodMetadata contains Labels and Annotations gets propagated to the thanos ruler pods.
+	PodMetadata *EmbeddedObjectMetadata `json:"podMetadata,omitempty"`
+	// Thanos container image URL.
+	Image string `json:"image,omitempty"`
+	// An optional list of references to secrets in the same namespace
+	// to use for pulling thanos images from registries
+	// see http://kubernetes.io/docs/user-guide/images#specifying-imagepullsecrets-on-a-pod
+	ImagePullSecrets []v1.LocalObjectReference `json:"imagePullSecrets,omitempty"`
+	// When a ThanosRuler deployment is paused, no actions except for deletion
+	// will be performed on the underlying objects.
+	Paused bool `json:"paused,omitempty"`
+	// Number of thanos ruler instances to deploy.
+	Replicas *int32 `json:"replicas,omitempty"`
+	// Define which Nodes the Pods are scheduled on.
+	NodeSelector map[string]string `json:"nodeSelector,omitempty"`
+	// Resources defines the resource requirements for single Pods.
+	// If not provided, no requests/limits will be set
+	Resources v1.ResourceRequirements `json:"resources,omitempty"`
+	// If specified, the pod's scheduling constraints.
+	Affinity *v1.Affinity `json:"affinity,omitempty"`
+	// If specified, the pod's tolerations.
+	Tolerations []v1.Toleration `json:"tolerations,omitempty"`
+	// If specified, the pod's topology spread constraints.
+	TopologySpreadConstraints []v1.TopologySpreadConstraint `json:"topologySpreadConstraints,omitempty"`
+	// SecurityContext holds pod-level security attributes and common container settings.
+	// This defaults to the default PodSecurityContext.
+	SecurityContext *v1.PodSecurityContext `json:"securityContext,omitempty"`
+	// Priority class assigned to the Pods
+	PriorityClassName string `json:"priorityClassName,omitempty"`
+	// ServiceAccountName is the name of the ServiceAccount to use to run the
+	// Thanos Ruler Pods.
+	ServiceAccountName string `json:"serviceAccountName,omitempty"`
+	// Storage spec to specify how storage shall be used.
+	Storage *StorageSpec `json:"storage,omitempty"`
+	// Volumes allows configuration of additional volumes on the output StatefulSet definition. Volumes specified will
+	// be appended to other volumes that are generated as a result of StorageSpec objects.
+	Volumes []v1.Volume `json:"volumes,omitempty"`
+	// ObjectStorageConfig configures object storage in Thanos.
+	// Alternative to ObjectStorageConfigFile, and lower order priority.
+	ObjectStorageConfig *v1.SecretKeySelector `json:"objectStorageConfig,omitempty"`
+	// ObjectStorageConfigFile specifies the path of the object storage configuration file.
+	// When used alongside with ObjectStorageConfig, ObjectStorageConfigFile takes precedence.
+	ObjectStorageConfigFile *string `json:"objectStorageConfigFile,omitempty"`
+	// ListenLocal makes the Thanos ruler listen on loopback, so that it
+	// does not bind against the Pod IP.
+	ListenLocal bool `json:"listenLocal,omitempty"`
+	// QueryEndpoints defines Thanos querier endpoints from which to query metrics.
+	// Maps to the --query flag of thanos ruler.
+	QueryEndpoints []string `json:"queryEndpoints,omitempty"`
+	// Define configuration for connecting to thanos query instances.
+	// If this is defined, the QueryEndpoints field will be ignored.
+	// Maps to the `query.config` CLI argument.
+	// Only available with thanos v0.11.0 and higher.
+	QueryConfig *v1.SecretKeySelector `json:"queryConfig,omitempty"`
+	// Define URLs to send alerts to Alertmanager.  For Thanos v0.10.0 and higher,
+	// AlertManagersConfig should be used instead.  Note: this field will be ignored
+	// if AlertManagersConfig is specified.
+	// Maps to the `alertmanagers.url` arg.
+	AlertManagersURL []string `json:"alertmanagersUrl,omitempty"`
+	// Define configuration for connecting to alertmanager.  Only available with thanos v0.10.0
+	// and higher.  Maps to the `alertmanagers.config` arg.
+	AlertManagersConfig *v1.SecretKeySelector `json:"alertmanagersConfig,omitempty"`
+	// A label selector to select which PrometheusRules to mount for alerting and
+	// recording.
+	RuleSelector *metav1.LabelSelector `json:"ruleSelector,omitempty"`
+	// Namespaces to be selected for Rules discovery. If unspecified, only
+	// the same namespace as the ThanosRuler object is in is used.
+	RuleNamespaceSelector *metav1.LabelSelector `json:"ruleNamespaceSelector,omitempty"`
+	// EnforcedNamespaceLabel enforces adding a namespace label of origin for each alert
+	// and metric that is user created. The label value will always be the namespace of the object that is
+	// being created.
+	EnforcedNamespaceLabel string `json:"enforcedNamespaceLabel,omitempty"`
+	// PrometheusRulesExcludedFromEnforce - list of Prometheus rules to be excluded from enforcing
+	// of adding namespace labels. Works only if enforcedNamespaceLabel set to true.
+	// Make sure both ruleNamespace and ruleName are set for each pair
+	PrometheusRulesExcludedFromEnforce []PrometheusRuleExcludeConfig `json:"prometheusRulesExcludedFromEnforce,omitempty"`
+	// Log level for ThanosRuler to be configured with.
+	LogLevel string `json:"logLevel,omitempty"`
+	// Log format for ThanosRuler to be configured with.
+	LogFormat string `json:"logFormat,omitempty"`
+	// Port name used for the pods and governing service.
+	// This defaults to web
+	PortName string `json:"portName,omitempty"`
+	// Interval between consecutive evaluations.
+	EvaluationInterval string `json:"evaluationInterval,omitempty"`
+	// Time duration ThanosRuler shall retain data for. Default is '24h',
+	// and must match the regular expression `[0-9]+(ms|s|m|h|d|w|y)` (milliseconds seconds minutes hours days weeks years).
+	Retention string `json:"retention,omitempty"`
+	// Containers allows injecting additional containers or modifying operator generated
+	// containers. This can be used to allow adding an authentication proxy to a ThanosRuler pod or
+	// to change the behavior of an operator generated container. Containers described here modify
+	// an operator generated container if they share the same name and modifications are done via a
+	// strategic merge patch. The current container names are: `thanos-ruler` and `config-reloader`.
+	// Overriding containers is entirely outside the scope of what the maintainers will support and by doing
+	// so, you accept that this behaviour may break at any time without notice.
+	Containers []v1.Container `json:"containers,omitempty"`
+	// InitContainers allows adding initContainers to the pod definition. Those can be used to e.g.
+	// fetch secrets for injection into the ThanosRuler configuration from external sources. Any
+	// errors during the execution of an initContainer will lead to a restart of the Pod.
+	// More info: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/
+	// Using initContainers for any use case other then secret fetching is entirely outside the scope
+	// of what the maintainers will support and by doing so, you accept that this behaviour may break
+	// at any time without notice.
+	InitContainers []v1.Container `json:"initContainers,omitempty"`
+	// TracingConfig configures tracing in Thanos. This is an experimental feature, it may change in any upcoming release in a breaking way.
+	TracingConfig *v1.SecretKeySelector `json:"tracingConfig,omitempty"`
+	// Labels configure the external label pairs to ThanosRuler. If not provided, default replica label
+	// `thanos_ruler_replica` will be added as a label and be dropped in alerts.
+	Labels map[string]string `json:"labels,omitempty"`
+	// AlertDropLabels configure the label names which should be dropped in ThanosRuler alerts.
+	// If `labels` field is not provided, `thanos_ruler_replica` will be dropped in alerts by default.
+	AlertDropLabels []string `json:"alertDropLabels,omitempty"`
+	// The external URL the Thanos Ruler instances will be available under. This is
+	// necessary to generate correct URLs. This is necessary if Thanos Ruler is not
+	// served from root of a DNS name.
+	ExternalPrefix string `json:"externalPrefix,omitempty"`
+	// The route prefix ThanosRuler registers HTTP handlers for. This allows thanos UI to be served on a sub-path.
+	RoutePrefix string `json:"routePrefix,omitempty"`
+	// GRPCServerTLSConfig configures the gRPC server from which Thanos Querier reads
+	// recorded rule data.
+	// Note: Currently only the CAFile, CertFile, and KeyFile fields are supported.
+	// Maps to the '--grpc-server-tls-*' CLI args.
+	GRPCServerTLSConfig *TLSConfig `json:"grpcServerTlsConfig,omitempty"`
+	// The external Query URL the Thanos Ruler will set in the 'Source' field
+	// of all alerts.
+	// Maps to the '--alert.query-url' CLI arg.
+	AlertQueryURL string `json:"alertQueryUrl,omitempty"`
+}
+
+// ThanosRulerStatus is the most recent observed status of the ThanosRuler. Read-only. Not
+// included when requesting from the apiserver, only from the Prometheus
+// Operator API itself. More info:
+// https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
+// +k8s:openapi-gen=true
+type ThanosRulerStatus struct {
+	// Represents whether any actions on the underlying managed objects are
+	// being performed. Only delete actions will be performed.
+	Paused bool `json:"paused"`
+	// Total number of non-terminated pods targeted by this ThanosRuler deployment
+	// (their labels match the selector).
+	Replicas int32 `json:"replicas"`
+	// Total number of non-terminated pods targeted by this ThanosRuler deployment
+	// that have the desired version spec.
+	UpdatedReplicas int32 `json:"updatedReplicas"`
+	// Total number of available pods (ready for at least minReadySeconds)
+	// targeted by this ThanosRuler deployment.
+	AvailableReplicas int32 `json:"availableReplicas"`
+	// Total number of unavailable pods targeted by this ThanosRuler deployment.
+	UnavailableReplicas int32 `json:"unavailableReplicas"`
+}
+
+// DeepCopyObject implements the runtime.Object interface.
+func (l *ThanosRuler) DeepCopyObject() runtime.Object {
+	return l.DeepCopy()
+}
+
+// DeepCopyObject implements the runtime.Object interface.
+func (l *ThanosRulerList) DeepCopyObject() runtime.Object {
+	return l.DeepCopy()
+}

vendor/modules.txt

@@ -1253,6 +1253,10 @@ github.com/pquerna/cachecontrol/cacheobject
 # github.com/proglottis/gpgme v0.1.1
 ## explicit; go 1.11
 github.com/proglottis/gpgme
+# github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring v0.48.1
+## explicit; go 1.14
+github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring
+github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1
 # github.com/prometheus/client_golang v1.12.1
 ## explicit; go 1.13
 github.com/prometheus/client_golang/prometheus