prometheus grafana openshift

Configuring most OpenShift Container Platform framework components, including the cluster monitoring stack, happens post-installation. The Operator resets everything to the defined state by default and by design. Add a remoteWrite: section under data/config.yaml/prometheusK8s. Configure Dead Mans Snitch to page the operator if the Dead mans switch alert is silent for 15 minutes. The OpenShift Container Platform Ansible openshift_cluster_monitoring_operator role configures and deploys the Cluster Monitoring Operator using the variables from the inventory file. As an engineer responsible for maintaining a stack, metrics are one of the most important tools for understanding your infrastructure. For more information, see Dead mans switch PagerDuty below. Summary: Prometheus isnt ingesting samples. Prometheus Cluster Monitoring | Configuring Clusters | OpenShift A local Alertmanager that routes alerts from Prometheus instances is enabled by default in the openshift-monitoring project of the OpenShift Container Platform monitoring stack. Use the process described above to add this configuration. See the OpenShift Container Platform documentation on taints and tolerations, See the Kubernetes documentation on taints and tolerations. persistent You can access Prometheus, Alerting UI, and Grafana web UIs using a Web browser through the OpenShift Container Platform Web console. OpenShift dashboards | GPU-Accelerated Machine Learning with OpenShift OpenShift Container Platform ships with a pre-configured and self-updating monitoring stack that is based on the Prometheus open source project and its wider eco-system. PagerDuty supports this mechanism through an integration called Dead Mans Snitch. This. Understanding how to update labels on nodes, Placing pods on specific nodes using node selectors, See the Kubernetes documentation for details on the nodeSelector constraint. Monitors Openshift cluster using prometheus. Openshift-monitoring: This Is the default cluster monitoring, which will always be installed along with the cluster. The following modifications are explicitly not supported: Creating additional ServiceMonitor, PodMonitor, and PrometheusRule objects in the openshift-* and kube-* projects. FlashStack for Cloud Native with Cisco Intersight, Red Hat OpenShift Apply the credentials file to the cluster: Now that you have configured authentication, visit the Targets page of the web interface again. Highlighted in the diagram above, at the heart of the monitoring stack sits the OpenShift Container Platform Cluster Monitoring Operator (CMO), which watches over the deployed monitoring components and resources, and ensures that they are always up to date. The following example checks the log level in the prometheus-operator deployment in the openshift-user-workload-monitoring project: Check that the pods for the component are running. This relates to the Prometheus instance that monitors core OpenShift Container Platform components only: To configure components that monitor user-defined projects: Edit the user-workload-monitoring-config ConfigMap object in the openshift-user-workload-monitoring project: The following example ConfigMap object configures a data retention period and minimum container resource requests for Prometheus. Summary: Reloading Prometheus' configuration failed. The following log levels can be applied to the relevant component in the cluster-monitoring-config and user-workload-monitoring-config ConfigMap objects: debug. Overview Revisions Reviews You will need to label your servers as follows: Master Servers: role=master Infrastructure Severs: role=infra Application/Node Servers: role=app Then you will need cAdvisor, kube-state-metrics and node-exporter to get all the info you need. If monitoring components remain in a Pending state after configuring the nodeSelector constraint, check the pod logs for errors relating to taints and tolerations. For production environments, it is highly recommended to configure persistent storage. For more information about the OpenShift Container Platform Cluster Monitoring Operator, see the Cluster Monitoring Operator GitHub project. To specify the size of the persistent volume claim for Prometheus and Alertmanager, change these Ansible variables: openshift_cluster_monitoring_operator_prometheus_storage_capacity (default: 50Gi), openshift_cluster_monitoring_operator_alertmanager_storage_capacity (default: 2Gi). Solution Verified - Updated 2020-08-22T04:41:27+00:00 - English . You can connect to Prometheus using Grafana to visualize your data. See computing resources recommendations for details. For this example, a new route is added to reflect alert routing of the frontend team. The pods affected by the new configuration restart automatically. In addition to Prometheus and Alertmanager, OpenShift Container Platform Monitoring also includes node-exporter and kube-state-metrics. The new configuration is applied automatically. Arc Kubernetes () Prometheus OpenShift Container Platform 3.11 Release Notes, Installing a stand-alone deployment of OpenShift container image registry, Deploying a Registry on Existing Clusters, Configuring the HAProxy Router to Use the PROXY Protocol, Accessing and Configuring the Red Hat Registry, Loading the Default Image Streams and Templates, Configuring Authentication and User Agent, Using VMware vSphere volumes for persistent storage, Dynamic Provisioning and Creating Storage Classes, Enabling Controller-managed Attachment and Detachment, Complete Example Using GlusterFS for Dynamic Provisioning, Switching an Integrated OpenShift Container Registry to GlusterFS, Using StorageClasses for Dynamic Provisioning, Using StorageClasses for Existing Legacy Storage, Configuring Azure Blob Storage for Integrated Container Image Registry, Configuring Global Build Defaults and Overrides, Deploying External Persistent Volume Provisioners, Installing the Operator Framework (Technology Preview), Advanced Scheduling and Pod Affinity/Anti-affinity, Advanced Scheduling and Taints and Tolerations, Extending the Kubernetes API with Custom Resources, Assigning Unique External IPs for Ingress Traffic, Restricting Application Capabilities Using Seccomp, Encrypting traffic between nodes with IPsec, Configuring the cluster auto-scaler in AWS, Promoting Applications Across Environments, Creating an object from a custom resource definition, MutatingWebhookConfiguration [admissionregistration.k8s.io/v1beta1], ValidatingWebhookConfiguration [admissionregistration.k8s.io/v1beta1], LocalSubjectAccessReview [authorization.k8s.io/v1], SelfSubjectAccessReview [authorization.k8s.io/v1], SelfSubjectRulesReview [authorization.k8s.io/v1], SubjectAccessReview [authorization.k8s.io/v1], ClusterRoleBinding [authorization.openshift.io/v1], ClusterRole [authorization.openshift.io/v1], LocalResourceAccessReview [authorization.openshift.io/v1], LocalSubjectAccessReview [authorization.openshift.io/v1], ResourceAccessReview [authorization.openshift.io/v1], RoleBindingRestriction [authorization.openshift.io/v1], RoleBinding [authorization.openshift.io/v1], SelfSubjectRulesReview [authorization.openshift.io/v1], SubjectAccessReview [authorization.openshift.io/v1], SubjectRulesReview [authorization.openshift.io/v1], CertificateSigningRequest [certificates.k8s.io/v1beta1], ImageStreamImport [image.openshift.io/v1], ImageStreamMapping [image.openshift.io/v1], EgressNetworkPolicy [network.openshift.io/v1], OAuthAuthorizeToken [oauth.openshift.io/v1], OAuthClientAuthorization [oauth.openshift.io/v1], AppliedClusterResourceQuota [quota.openshift.io/v1], ClusterResourceQuota [quota.openshift.io/v1], ClusterRoleBinding [rbac.authorization.k8s.io/v1], ClusterRole [rbac.authorization.k8s.io/v1], RoleBinding [rbac.authorization.k8s.io/v1], PriorityClass [scheduling.k8s.io/v1beta1], PodSecurityPolicyReview [security.openshift.io/v1], PodSecurityPolicySelfSubjectReview [security.openshift.io/v1], PodSecurityPolicySubjectReview [security.openshift.io/v1], RangeAllocation [security.openshift.io/v1], SecurityContextConstraints [security.openshift.io/v1], VolumeAttachment [storage.k8s.io/v1beta1], BrokerTemplateInstance [template.openshift.io/v1], TemplateInstance [template.openshift.io/v1], UserIdentityMapping [user.openshift.io/v1], Container-native Virtualization Installation, Container-native Virtualization Users Guide, Container-native Virtualization Release Notes, Configuring OpenShift Container Platform cluster monitoring, Accessing Prometheus, Alertmanager, and Grafana, Capacity Planning for Cluster Monitoring Operator, configure Dead Mans Snitch for PagerDuty. For information on system requirements for persistent storage, see Capacity Planning for Cluster Monitoring Operator. Because Prometheus has two replicas and Alertmanager has three replicas, you need five PVs to support the entire monitoring stack. ', Kubernetes API server client 'Job/Instance' is experiencing X errors / sec.'. For application monitoring on RHOCP, you need to set up your own Prometheus and Grafana deployments. NodeExporter has disappeared from Prometheus target discovery. The persistent volume claimed by PersistentVolumeClaim in namespace Namespace has X% free. It also configures two dashboards that provide metrics for the router network. OpenShift Container Platform does not support resizing an existing persistent storage volume used by StatefulSet resources, even if the underlying StorageClass resource used supports persistent volume sizing. However, this built-in monitoring capability provides read-only cluster monitoring and does not allow monitoring any additional target. Custom Grafana dashboards for Red Hat OpenShift Container Platform 4 Modifying resources of the stack. It deploys its own . Save the file to apply the changes to the ConfigMap object. However this is unsupported, as configuration paradigms might change across Prometheus releases, and such cases can only be handled gracefully if all configuration possibilities are controlled. To enable persistent storage of Prometheus time-series data, set this variable to true in the Ansible inventory file: To enable persistent storage of Alertmanager notifications and silences, set this variable to true in the Ansible inventory file: How much storage you need depends on the number of pods. Application Monitoring on Red Hat OpenShift Container Platform - IBM Build, deploy and manage your applications across cloud- and on-premise infrastructure, Single-tenant, high-availability Kubernetes clusters in the public cloud, The fastest way for developers to build, host and scale applications in the public cloud. In order to be able to deliver updates with guaranteed compatibility, configurability of the OpenShift Container Platform Monitoring stack is limited to the explicitly available options. Application Monitoring on Red Hat OpenShift Container Platform - IBM If only one label is specified, ensure that enough nodes contain that label to distribute all of the pods for the component across separate nodes. The following example lists the status of pods in the openshift-user-workload-monitoring project: If an unrecognized loglevel value is included in the ConfigMap object, the pods for the component might not restart successfully. Multiple routes may be added beneath the original route, typically to define the receiver for the notification. An attribute that has an unlimited number of potential values is called an unbound attribute. This is ideal if you Learn More: Azure Monitor managed service for Prometheus Documentation ; Collect Prometheus metrics from an Arc-enabled Kubernetes cluster (preview) Add new routes. You have installed the OpenShift CLI (oc). No service disruption occurs during this process. In your Grafana, add a source such as Prometheus: 1. It can sometimes take a while for these components to redeploy. Please remove overrides before continuing. If they are modified, the stack will reset them. It is administrators responsibility to dedicate sufficient storage to ensure that the disk does not become full. Verify that etcd is now being correctly monitored. You can move any of the monitoring stack components to specific nodes. ClusterMonitoringOperator has disappeared from Prometheus target discovery. Procedure. If you do not need the local Alertmanager, you can disable it by configuring the cluster-monitoring-config config map in the openshift-monitoring project. Prometheus has two replicas and Alertmanager has three replicas, which amounts to five PVs. Accessing Prometheus, Alertmanager, and Grafana The following example lists the status of pods in the openshift-monitoring project: It may take a few minutes after applying the change for these pods to terminate. Dedicate sufficient local persistent storage to ensure that the disk does not become full. Defaults to 2Gi. In this case, the path to the configuration file is /usr/share/ansible/openshift-ansible/playbooks/openshift-monitoring/config.yml. Update the PVC configuration for the monitoring component under data/config.yaml: The following example configures the PVC size to 100 gigabytes for the Prometheus instance that monitors user-defined projects: The following example sets the PVC size to 20 gigabytes for Thanos Ruler: Save the file to apply the changes. 1. (static config). You have limited the number of samples that can be accepted per target scrape in user-defined projects, by using enforcedSampleLimit. The components affected by the new configuration are moved to the new nodes automatically. Enable persistent storage of Alertmanager notifications and silences.
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