The disaster recovery documentation provides information for administrators on how to recover from several disaster situations that might occur with their OpenShift Container Platform cluster. ec2. openshift. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Restarting the cluster. Do not downgrade. In OpenShift Container Platform, you can also replace an unhealthy etcd member. The output of this command will show the etcd pods running. Ensure that you back up the /etc/etcd/ directory, as noted in the etcd backup instructions. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Any advice would be highly appreciated :)Operator to manage the lifecycle of the etcd members of an OpenShift cluster - GitHub - openshift/cluster-etcd-operator: Operator to manage the lifecycle of the etcd members of an OpenShift cluster. 168. 명령어 백업. 2. Follow these steps to back up etcd data by creating an etcd snapshot and backing up the resources for the static pods. 11 Release Notes. Back up etcd v3 data: # systemctl show etcd --property=ActiveState,SubState # mkdir -p. etcd is a consistent and highly-available key value store used as Kubernetes’ backing store for all cluster data. openshift. Red Hat OpenShift Dedicated. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. You should only save a snapshot from a single master host. Get training, subscriptions, certifications, and more for partners to build, sell, and support customer solutions. openshift. etcd-ca. among the following examples: ETCD alerts from etcd-cluster-operator like: etcdHighFsyncDurations etcdIn. 4. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues when restarting. Securing etcd. Red Hat OpenShift Dedicated. Now that I’m bringing the cluster back up, I noticed all the certificates have expired. Pass in the name of the unhealthy etcd member that you took note of earlier in this procedure. Do not take an etcd backup before the first certificate rotation completes, which occurs 24 hours after installation, otherwise the backup will contain expired certificates. Red Hat OpenShift Dedicated. gz. Before we start node rebuild activity lets talk about the etcd backup and its steps. English. As an administrator, you might need to follow one or more of the following procedures in order to return your cluster to a working state. For more information, see "Backing up etcd". 168. 7. openshift. For security reasons, store this file separately from the etcd snapshot. You have access to the cluster as a user. Openshift Container Platform 4: Etcd backup cronjob. This solution. In OpenShift Container Platform, you can also replace an unhealthy etcd member. gz file contains the encryption keys for the etcd snapshot. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Only save a backup from a single master host. When Data Mover is enabled, you can restore stateful applications. 10. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. 4# etcdctl member list c300d358075445b, started, master-0,. For example, it can help protect the loss of sensitive data if an etcd backup is exposed to the incorrect parties. Next steps. yaml and deploy it. etcd can be optionally configured for high availability, typically deployed with 2n+1 peer services. 10. For the selected control plane machine, back up the etcd data by creating an etcd snapshot. View the member list: Copy. If applicable, you might also need to recover from expired control plane certificates. Trevor King 2021-08-25 03:05:41 UTC. Red Hat OpenShift Online. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. Before completing a backup of the etcd cluster, you need to create a Secret in an existing or new temporary namespace containing details about the authentication mechanism used by. us-east-2. io/v1] ImageContentSourcePolicy [operator. When both options are in use, the lower of the two values limits the number of pods on a node. Environment. If you lose etcd quorum, you can restore it. 1. 5. 2. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. 12 cluster, you can set some of its core components to be private. Do not take an etcd backup before the first certificate rotation completes, which occurs 24 hours after installation, otherwise the backup will contain expired certificates. $ oc get secrets -n openshift-etcd | grep ip-10-0-131-183. In OpenShift Container Platform, you can perform a graceful shutdown of a cluster so that you can easily restart the cluster later. etcd-openshift-control-plane-0 5/5. Connect to the running etcd container, passing in the name of a pod that is not on the affected node: In a terminal that has access to the cluster as a cluster-admin user, run the following command: Copy. Red Hat OpenShift Container Platform. For information on the advisory (Moderate: OpenShift Container Platform 4. compute. This process is no different than the process of when you remove a node from the cluster and add a new one back in its place. An etcd backup plays a crucial role in disaster recovery. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. etcd-openshift-control-plane-0 5/5. etcd-openshift-control-plane-0 5/5 Running 11 3h56m 192. Add. It is possible to use the etcd backup to recover from the scenario where one or more master nodes have been lost. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Overview. You might need to temporarily shut down your cluster for maintenance reasons, or to save on resource costs. 59 and later. When restoring, the etcd-snapshot-restore. All cluster data is stored here. 0 or 4. Build, deploy and manage your applications across cloud- and on-premise infrastructure. io/v1]. 11 clusters running multiple masters, one of the master nodes includes additional CA certificates in /etc/origin/master , /etc/etcd/ca, and /etc/etcd/generated_certs. This automation lets OpenShift customers run 10-plus to a 100-plus clusters without scaling their operations team linearly. tar. io/v1alpha1] ImagePruner [imageregistry. Doing it with the etcd Operator simplifies operations and avoids common upgrade. Creating a secret for backup and snapshot locations Expand section "4. An etcd backup plays a crucial role inThe aescbc type means that AES-CBC with PKCS#7 padding and a 32 byte key is used to perform the encryption. An etcd backup plays a crucial role in disaster recovery. To find the created cron job, run the following command: $ oc get cronjob -n openshift-etcd. 2. x very cleverly took the manual instructions from the backing up etcd documentation and automated them with a CronJob. operator. Get a shell into one of the contrail-etcd pods. xRestarting the cluster gracefully. In the case of OCP, it is likely that etcd pods have labels app=etcd,etcd=true and are running in the. Red Hat OpenShift Dedicated. After backups have been created, they can be restored onto a newly installed version of the relevant component. export NAMESPACE=etcd-operator. Instead, you either take a snapshot from a live member with the etcdctl snapshot save command or copy the member/snap/db file from an etcd data directory. Read developer tutorials and download Red Hat software for cloud application development. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Description W. oc project openshift-etcd. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. Perform the restore action on K10 by selecting the target namespace as etcd-restore. Provide the path to the new pull secret file. 10 openshift-control-plane-1 <none. The fastest way for developers to build, host and scale applications in the public cloud. Let’s change to the openshift-etcd project oc project openshift-etcd. Upgrade - Upgrading etcd without downtime is a critical but difficult task. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. Build, deploy and manage your applications across cloud- and on-premise infrastructure. For example, it can help protect the loss of sensitive data if an etcd backup is exposed to the incorrect parties. x. 168. This process is no different than the process of when you remove a node from the cluster and add a new one back in its place. As we continue to grow, we would wish to reach and impact more people who visit and take advantage of the guides we have on our blog. Do not create a backup from each. Some key metrics to monitor on a deployed OpenShift Container Platform cluster are p99 of etcd disk write ahead log duration and the number of etcd leader changes. Focus mode. DNSRecord [ingress. In OpenShift Enterprise, you can back up (saving state to separate storage) and restore (recreating state from separate storage) at the cluster level. You must take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues. Step 1: Create a data snapshot. Chapter 5. There is also some preliminary support for per-project backup . If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. 6. Follow these steps to back up etcd data by creating a snapshot. In the CronJob section, I will explain the pods that will be created to perform the backup in more detail. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Solution Verified - Updated 2023-09 -23T13:21:29+00:00 - English . It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues when restarting the cluster. Note that the etcd backup still has all the references to current storage volumes. Copied! $ oc rsh -n openshift-etcd etcd-ip-10-0-154-204. Single-tenant, high-availability Kubernetes clusters in the public cloud. 5. Back up the etcd database. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. tar. Specific namespaces must be created for running ETCD backup pods. sh script is backward compatible to accept this single file. Prerequisites Access to the cluster as a user with the cluster-admin role through a certificate-based kubeconfig file, like the one that was used during installation. About 300Mb for a daily backup and 2. internal 2/2 Running 7 122m etcd-member-ip-10-0-171-108. cluster. Log in to your cluster as a cluster-admin user using the following command: $ oc login The server uses a certificate signed by an unknown authority. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. To perform an etcd backup, start a debug session for a master node, change your root directory to the host, and run. Vulnerability scanning. 3. When you enable etcd encryption, the following OpenShift API server and Kubernetes API server resources are encrypted:. yml and add the following information:You have taken an etcd backup. 0. This snapshot can be saved and used at a later time if you need to restore etcd. Note that the etcd backup still has all the references to the storage volumes. Here are three examples of backup options: A backup of etcd (e. 1. Skip podman and umount, because only needed to extract etcd client from image. An etcd backup plays a crucial role in disaster recovery. Next steps. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. For security reasons, store this file separately from the etcd snapshot. Installing and configuring the OpenShift API for Data Protection with OpenShift Container Storage" 4. In OpenShift Container Platform, you. 11에서 Control Plane (Master Nodes)에서 etcdctl 명령어로 snapshot 백업이 가능하다. You should take a backup of etcd or VM snapshot for insurance. Note: Save. 8 Backing up and restoring your OpenShift Container Platform cluster Red Hat OpenShift Documentation Team Legal Notice Abstract This document provides instructions for backing up your. An etcd backup plays a crucial role in disaster recovery. In OpenShift Container Platform, you can also replace an unhealthy etcd member. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Add. Red Hat OpenShift Container Platform. Backing up etcd data. Follow these steps: Forward the etcd service port and place the process in the background: kubectl port-forward --namespace default. The fastest way for developers to build, host and scale applications in the public cloud. 1. If you run etcd on a separate host, you must back up etcd, take down your etcd cluster, and form a new one. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. openshift. Backing up etcd data. tar. 11, downgrading does not completely restore your cluster to version 3. com:2380 to 10. The full state of a cluster installation includes: etcd data on each master. This document describes the process to restart your cluster after a graceful shutdown. ec2. 2 cluster must use an etcd backup that was taken. The etcd 3. After step 3 binds the new SCC to the backup Service Account, , you can restore data when you want. 2:$ oc -n openshift-etcd get pods -l k8s-app = etcd. Delete all containers: # docker rm. gz file contains the encryption keys for the etcd snapshot. In the initial release of OpenShift Container Platform version 3. Azure Red Hat OpenShift 4. There are a variety of ways to customize a backup to avoid backing up inappropriate resources via namespaces or labels. Node failure due to hardware. 10. For example, if podsPerCore is set to 10 on a node with 4 processor cores, the maximum number of pods allowed on the node will be 40. 3 requires Docker 1. This section covers how to install and configure Velero and how to use Velero to take backup/restore on an Openshift Container. Get product support and knowledge from the open source experts. The OpenShift Container Platform node configuration file contains important options. The etcd backup and restore tools are also provided by the platform. This is fixed in OpenShift Container Platform 3. (oc get pod -n openshift-etcd -l app=etcd -o jsonpath="{. Application backup and restore operations Expand section "1. The Backup CR creates backup files for Kubernetes resources and internal images, on S3 object storage, and snapshots for persistent volumes (PVs), if the cloud provider uses a native snapshot API or the Container Storage Interface (CSI) to create snapshots, such as OpenShift Container Storage 4. Red Hat OpenShift Online. (1) 1. For security reasons, store this file separately from the etcd snapshot. Fortunately, GlusterFS, an underlying technology behind Red Hat OpenShift Container Storage (RHOCS), does. OCP Disaster Recovery Part 1 - How to Create Automated ETCD Backup in OpenShift 4. 9 recovery guide mentions only etcdctl snapshot save, no etcdctl backup. crt. 3. August 3, 2023 16:34. ETCD performance troubleshooting guide for OpenShift Container Platform . local databases are installed (by default) as OpenShift resources onto your. 1. 9 recovery guide mentions only etcdctl snapshot save, no etcdctl backup. If an etcd host has become corrupted and the /etc/etcd/etcd. Then, see the release notes. io/v1alpha1] ImagePruner [imageregistry. 3. Access a master host. Single-tenant, high-availability Kubernetes clusters in the public cloud. Follow these steps to back up etcd data by creating an etcd snapshot and backing up the resources for the static pods. 1, then this procedure generates a single file that contains the etcd snapshot and static Kubernetes API server resources. Copy to clipboard. Etcd [operator. If your Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for those data. OCP Disaster Recovery Part 1 - How to Create Automated ETCD Backup in OpenShift 4. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Use the following steps to move etcd to a different device: Procedure. Red Hat OpenShift Dedicated. etcd-openshift-control-plane-0 5/5. Create an etcd backup on each master. internal from snapshot. IMHO the best solution is to define a Cronjob in the same project as the db, the Job will use an official OpenShift base image with the OC CLI, and from there execute a script that will connect to the pod where the db runs ( oc rsh. The full state of a cluster installation includes: etcd data on each master. Creating an environment-wide backup; Host-level tasks; Project-level tasks; Docker tasks; Managing Certificates;. OADP features. 1. 2. 5. on each host using the following steps: Remove all local containers and images on the host. Copied! $ oc rsh -n openshift-etcd etcd-ip-10-0-154-204. An etcd backup plays a crucial role in disaster recovery. Client secrets (etcd-client, etcd-metric-client, etcd-metric-signer, and etcd-signer) are added to the openshift-config, openshift-monitoring, and openshift-kube-apiserver. NOTE: After any update in the OpenShift cluster, it is highly recommended to perform a backup of ETCD. An etcd backup plays a crucial role in. Read developer tutorials and download Red Hat software for cloud application development. For security reasons, store this file separately from the etcd snapshot. kubeletConfig: podsPerCore: 10. The full state of a cluster installation includes: etcd data on each master. For example, an OpenShift Container Platform 4. 1. Creating an environment-wide backup involves copying important data to assist with restoration in the case of crashing instances, or corrupt data. Add the restored master hosts to the etcd cluster. openshift. In OpenShift Container Platform, you can restore your cluster and its components by recreating cluster elements, including nodes and applications, from separate storage. md OpenShift etcd backup CronJob You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Installing and configuring the OpenShift API for Data Protection with OpenShift Container Storage". us-east-2. tar. Replacing the unhealthy etcd member" 5. In OpenShift Container Platform, you can also replace an unhealthy etcd member. 0 or 4. Remove the old secrets for the unhealthy etcd member that was removed. gz file contains the encryption keys for the etcd snapshot. Overview. An etcd backup plays a crucial role in disaster recovery. Single-tenant, high-availability Kubernetes clusters in the public cloud. If your Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for the data. However, it is important to understand when it is appropriate to use OADP instead of etcd’s built-in backup/restore. After you have an etcd backup, you can restore to a previous cluster state. io/v1]. If you lose etcd quorum, you can restore it. If you are taking an etcd backup on OpenShift Container Platform 4. If you run etcd as static pods on your master nodes, you stop the. If you run etcd as static pods on your master nodes, you stop the. oc get backups -n velero <name of backup> -o yaml A successful backup with output phase:Completed and the objects will live in the container in the storage account. internal. This includes situations where a majority of master hosts have been lost, leading to etcd quorum loss and the cluster going offline. io/v1]. Note that the etcd backup still has all the references to the storage volumes. Add the new etcd host to the list of the etcd servers OpenShift Container Platform uses to store the data, and remove any failed etcd hosts: etcdClientInfo: ca: master. 3. 2. 2 cluster must use an etcd backup that was taken from 4. internal. There is also some preliminary support for per-project backup. Get training, subscriptions, certifications, and more for partners to build, sell, and support customer solutions. io/v1] ImageContentSourcePolicy [operator. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. yaml Then adjust the storage configuration to your needs in backup-storage. Red Hat OpenShift Dedicated. Backup and restore procedures are not fully supported in OpenShift Container Platform 3. x to AWS S3 Bucket; Configure Static IPv4 Address in OpenShift 4. OpenShift Container Platform 3. clustername. 3. This backup can be saved and used at a later time if you need to restore etcd. View the member list: Copy. 我们都知道 etcd 是 OpenShift/Kubernetes 集群里最为重要的一个组件，用于存储集群所有资源对象的状态。. openshift. internal. This document describes the process to restart your cluster after a graceful shutdown. You must replace RHEL7 workers with RHEL8 or. Get product support and knowledge from the open source experts. $ oc delete secret -n openshift-etcd etcd-serving-metrics-ip-10-0-131-183. 3Gb for 8 days worth of backups is nothing these days. In OpenShift Container Platform, you can also replace an unhealthy etcd member. The etcd component is used as Kubernetes’ backing store. Only save a backup from a single control plane host. Only save a backup from a single master host. In the initial release of OpenShift Container Platform version 3. io/v1] ImageContentSourcePolicy [operator. Red Hat OpenShift Container Platform. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. ec2. etcd (読みはエトセディー) は、 オープンソース で分散型の、一貫したキーバリューストア (key-value store) で、マシンの分散システムまたはクラスタの共有構成、サービス検出、スケジューラー調整を可能にします。. internal. $ oc get pods -n openshift-etcd | grep etcd etcd-ip-10-0-143-125. Note that the etcd backup still has all the references to the storage volumes. oc get backups -n velero <name of backup> -o yaml A successful backup with output phase:Completed and the objects will live in the container in the storage account. $ oc -n openshift-etcd rsh etcd-master-0 sh-4. compute. Overview. For example, an OpenShift Container Platform 4. Get training, subscriptions, certifications, and more for partners to build, sell, and support customer solutions. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. If you are taking an etcd backup on OpenShift Container Platform 4. The full state of a cluster installation includes: etcd data on each master. Note that you must use an etcd backup that was taken from the same z-stream release, and then you can restore the OpenShift cluster from the backup. 1, Red Hat introduced the concept of channels for recommending the appropriate release versions for cluster upgrades. Verify that the new member is available and healthy. Red Hat OpenShift Online. If you have. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. If you lose etcd quorum, you can restore it. $ oc get secrets -n openshift-etcd | grep ip-10-0-131-183. This backup can be saved and used at a later time if you need to restore etcd. Chapter 4. Restore from the etcd backup:Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. Backup etcd. When you restore your cluster, you must use an etcd backup that was taken from the same z-stream release. より安全な自動更新を容易にし、ホストに. This backup can be saved and used at a later time if you need to restore etcd. internal 2/2 Running 0 15h etcd-member-ip-10-0-147-172. A cluster’s certificates expire one year after the installation date. Do not take an etcd backup before the first certificate rotation completes, which occurs 24 hours after installation, otherwise the backup will contain expired certificates. internal. If you would prefer to watch or listen, head on. You must back up etcd data before shutting down a cluster; etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Restoring OpenShift Container Platform components. Create pvc with name etcd-backup; Note.