gz file contains the encryption keys for the etcd snapshot. $ oc delete secret -n openshift-etcd etcd-serving-metrics-ip-10-0-131-183. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues. 168. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. Chapter 1. Only save a backup from a single control plane host. 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. 6. If you lose etcd quorum, you can restore it. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. tar. crt. Build, deploy and manage your applications across cloud- and on-premise infrastructure. OpenShift API for Data Protection (OADP) supports the following features: Backup. e: human error) and the cluster ends up in a worst-state. You can perform the etcd data backup process on any master host that has connectivity to the etcd cluster, where the proper certificates are provided. io/v1]. Provision as many new machines as there are masters to replace. 0 or 4. During etcd quorum loss, applications that run on OpenShift Container Platform are unaffected. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. operator. 9 openshift-control-plane-0 <none> <none> etcd-openshift-control-plane-1 5/5 Running 0 3h54m 192. 3 security update), and where to find the updated files, follow the link below. The etcdctl backup command rewrites some of the metadata contained in the backup,. such as NetworkManager features, as well as the latest hardware support and driver updates. You can use one healthy etcd node to form a new cluster, but you must remove all other healthy nodes. gz file contains the encryption keys for the etcd snapshot. For the selected control plane machine, back up the etcd data by creating an etcd snapshot. 3. 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. operator. export NAMESPACE=etcd-operator. To find the created cron job, run the following command: $ oc get cronjob -n openshift-etcd. For restoring a backup using an earlier version, additional steps will be required for correctly recovering the cluster. If you are taking an etcd backup on OpenShift Container Platform 4. oc project openshift-etcd. com]# etcdctl3 snapshot save /var/lib/etcd/backup Error: context deadline exceeded Environment. Read developer tutorials and download Red Hat software for cloud application development. Trevor King 2021-08-25 03:05:41 UTC. When you restore your cluster, you must use an etcd backup that was taken from the same z-stream release. Once the cluster has upgraded to 3. 11, downgrading does not completely restore your cluster to version 3. Prepare NFS server in Jumphost/bastion host for backup. 1. In OpenShift Container Platform, you can also replace an unhealthy etcd member. 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. 4. In the case of OCP, it is likely that etcd pods have labels app=etcd,etcd=true and are running in the. (1) 1. 10 in Release Notes for an optional image manifest migration script. crt keyFile: 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. For example: Backup every 30 minutes and keep the last 3 backups. 5. For more information, see CSI volume snapshots. It is important to take an etcd backup before performing this procedure so that your cluster can be restored if you encounter any issues. 0. Creating a secret for backup and snapshot locations Expand section "4. 11, the scaleup. Restoring OpenShift Container Platform from an etcd snapshot does not bring back the volume on the storage provider, and does not produce a running. However, if the etcd snapshot is old, the status might be invalid or outdated. Creating a secret for backup and snapshot locations" Collapse section "4. Installing and configuring the OpenShift API for Data Protection with OpenShift Container Storage" Collapse section "4. 10. Add. 2. Ensure that you back up the /etc/etcd/ directory, as noted in the etcd backup instructions. etcd-client. 168. 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. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. 10. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. 0 または 4. For example, an OpenShift Container Platform 4. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. Secret Store CSI (SSCSI) driver allows OpenShift customers to mount secrets from external secret management systems like AWS Secrets Manager or Azure Key Vault via a provider plugin. 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. io/v1alpha1] ImagePruner [imageregistry. You have access to the cluster as a user with the cluster-admin role. Create an etcd backup on each master. etcd-ca. Restore the certificates and keys, on each master: # cd /etc/origin/master # tar xvf /tmp/certs-and-keys-$ (hostname). us-east-2. In OpenShift Container Platform, you can also replace an unhealthy etcd member. etcd-client. Step 1: Create a data snapshot. x. 1. An etcd backup plays a crucial role in disaster recovery. Remove the old secrets for the unhealthy etcd member that was removed. Access a master host as the root user. These steps will allow you to restore an application that has been previously backed up with Velero. Replacing the unhealthy etcd member" 5. 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. For example, two parameters control the maximum number of pods that can be scheduled to a node: podsPerCore and maxPods. 168. Overview. Do not take a backup from each control plane host in the cluster. 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. sh スクリプトを実行し、バックアップの. As long as you have taken an etcd backup, you can follow this procedure to restore your cluster to a previous state. The full state of a cluster installation includes:If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. Red Hat OpenShift Container Platform. If you run etcd as static pods on your master nodes, you stop the. openshift. openshift. internal. For example, an OpenShift Container Platform 4. An etcd backup plays a crucial role in disaster recovery. If you are taking an etcd backup on OpenShift Container Platform 4. OpenShift Container Platform 4. 4. ec2. gz file contains the encryption keys for the etcd snapshot. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. 9 openshift-control-plane-0 <none> <none> etcd-openshift-control-plane-1 5/5 Running 0 3h54m 192. Red Hat OpenShift Dedicated. 5 etcd will fail in a rollback scenario. If you use hosted control planes on OpenShift Container Platform, you can back up and restore etcd by taking a snapshot of etcd and uploading it to a location where you can retrieve it later, such as an S3 bucket. 168. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. Specify an array of namespaces to back up. In OpenShift Container Platform, you can also replace an unhealthy etcd member. yaml and deploy it. Note that the etcd backup still has all the references to current storage volumes. ec2. 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. Red Hat OpenShift Container Platform. He has extensive hands-on experience with public cloud platforms, cloud hosting, Kubernetes and OpenShift deployments in production. us-east-2. 2 EUS packages for the entirety of its lifecycle. 3 cluster must use an etcd backup that was taken from 4. In the CronJob section, I will explain the pods that will be created to perform the backup in more detail. OADP provides APIs to backup and restore OpenShift cluster resources (yaml files), internal images and persistent volume data. Do not downgrade. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. You may be curious how ETCD automated backups can assist in the recovery of one or more Master Nodes Cluster on OpenShift 4. When you restore from an etcd backup, the status of the workloads in OpenShift Container Platform is also restored. Specify both the IP address of the healthy master where the signer server is running, and the etcd name of the new member. However, if the etcd snapshot is old, the status might be invalid or outdated. 1. If you run etcd on a separate host, you must back up etcd, take down your etcd cluster, and form a new one. 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. 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. io/v1] ImageContentSourcePolicy [operator. 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. Even though master-0 is already unavailable, it is nice to have a backup just in case any additional problems arise (i. 647589 I | pkg/netutil: resolving etcd-0. Even though the cluster is expected to be functional after the restart, the cluster might not recover due to unexpected conditions, for example: etcd data corruption during shutdown. (1) 1. In OpenShift Container Platform, you can perform a graceful shutdown of a cluster so that you can easily restart the cluster later. crt certFile: master. SSH access to a master host. If you choose to install and use the CLI locally, this tutorial requires that you're running the Azure CLI version 2. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. 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. 1. As long as you have taken an etcd backup, you can follow this procedure to restore your cluster to a previous state. Posted In Red Hat OpenShift Container Platform Tags backup etcd Automated daily etcd-backup on OCP 4 Latest response May 8 2023 at 2:49 PM So I followed. Restoring etcd quorum. 1. 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. Pass in the name of the unhealthy etcd member that you took note of earlier in this procedure. For example, two parameters control the maximum number of pods that can be scheduled to a node: podsPerCore and maxPods. 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. Control plane backup and restore. 5. items[0]. Get product support and knowledge from the open source experts. You should only save a snapshot from a single master host. . If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. This document describes the process to restart your cluster after a graceful shutdown. Bare metal Operator is available ($ oc get clusteroperator baremetal). It is possible to use the etcd backup to recover from the scenario where one or more master nodes have been lost. For security reasons, store this file separately from the etcd snapshot. 3. Log in to the container image registry by using your access token: $ oc login -u kubeadmin -p <password_from_install_log> $ podman login -u kubeadmin -p $ (oc whoami -t) image. etcd-openshift-control-plane-0 5/5. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. 11. Single-tenant, high-availability Kubernetes clusters in the public cloud. 883545 I | mvcc: restore compact to 361491 2019-05-15 19:03:34. That command is: apt install etcd-client. etcd is a consistent and highly-available key value store used as Kubernetes’ backing store for all cluster data. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. To verify the name resolution: $ dig +short docker-registry. Review the OpenShift Container Platform 3. Before you begin You need to have a Kubernetes. You can use one healthy etcd node to form a new cluster, but you must remove all other healthy nodes. If you lose etcd quorum, you can restore it. Red Hat OpenShift Container Platform. The full state of a cluster installation includes: etcd data on each master. 9 downgrade path. cluster. There is also some preliminary support for per-project backup . 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. io/v1]. 2. It can offer multi-cloud data protection, multiple cyber-resiliency options and several different backup types within your OpenShift environments (Kubernetes resources, etcd backups and CSI snapshots). Backup etcd. 10. tar. For security reasons, store this file separately from the etcd snapshot. All etcd hosts should contain the master host name if the etcd cluster is co-located with master services, or all etcd instances should be visible if etcd is running separately. I have done the etcd backup and then a restore on the same cluster and now I'm having these issues where I can list resources but I can't create or delete. 0 or later. local 172. Control plane backup and restore. 6. on each host using the following steps: Remove all local containers and images on the host. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. Focus mode. Skip podman and umount, because only needed to extract etcd client from image. g. List the secrets for the unhealthy etcd member that was removed. io/v1]. This should be done in the same way that OpenShift Enterprise was previously installed. 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 from an etcd snapshot does not bring back the volume on the storage provider, and does not produce a running. I was running this cluster for almost 8 months with no issues before. 10 openshift-control-plane-1 <none. We will see how. The etcd can only be run on a master node. tar. 3. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. 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. tar. A cluster’s certificates expire one year after the installation date. Even though the cluster is expected to be functional after the restart, the cluster might not recover due to unexpected conditions, for example: etcd data corruption during shutdown. 10 to 3. If etcd encryption is enabled during a backup, the static_kuberesources_<datetimestamp>. dockerconfigjson = <pull_secret_location>. An etcd backup plays a crucial role in disaster recovery. Read developer tutorials and download Red Hat software for cloud application development. Customer responsibilities. Determine which master node is currently the leader. io/v1] ImageContentSourcePolicy [operator. Backup and restore procedures are not fully supported in OpenShift Container Platform 3. The etcd backup and restore tools are also provided by the platform. Upgrade - Upgrading etcd without downtime is a. podsPerCore sets the number of pods the node can run based on the number of processor cores on the node. Red Hat OpenShift Dedicated. If your Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for those data. openshift. Etcd [operator. Taking etcd backup on any one master node. ec2. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. 1. After you install an OpenShift Container Platform version 4. Etcd [operator. 1, then it is a single file that contains the etcd snapshot and static Kubernetes API server resources. If you run etcd on a separate host, you must back up etcd, take down your etcd cluster, and form a new one. Red Hat OpenShift Online. Creating an environment-wide backup. internal. Provision as many new machines as there are masters to replace. The API, hypershift. Back up the etcd database. An etcd backup plays a crucial role in disaster recovery. To do this, change to the openshift-etcd project. You do not need a snapshot from each master host in the. The etcd package is required, even if using embedded etcd,. 2. Etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. openshift. You can remove this backup after a successful restore. etcd-openshift-control-plane-0 5/5. (oc get pod -n openshift-etcd -l app=etcd -o jsonpath="{. An etcd backup plays a crucial role in disaster recovery. An etcd backup plays a crucial role in disaster recovery. 1, Red Hat introduced the concept of channels for recommending the appropriate release versions for cluster upgrades. An etcd backup plays a crucial role in disaster recovery. 2:$ oc -n openshift-etcd get pods -l k8s-app = etcd. ec2. Provision as. If your Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for the data. 9: Starting in OpenShift Container Platform 3. 5 due to dependencies on cluster state. 4. etcd is the key-value store for OpenShift Container Platform, which persists the state of all resource objects. sh script is backward compatible to accept this single file. When both options are in use, the lower of the two values limits the number of pods on a node. Upgrade - Upgrading etcd without downtime is a critical but difficult task. Following an OpenShift Container Platform upgrade, it may be desirable in extreme cases to downgrade your cluster to a previous version. 7. 2 cluster must use an etcd backup that was taken from 4. For example, an OpenShift Container Platform 4. Get product support and knowledge from the open source experts. etcd stores the persistent master state while other components watch etcd for changes to bring themselves into the desired state. 1. The example uses NFS but you can use any storage class you want:For example, an OpenShift Container Platform 4. 4. 10. Use case 3: Create an etcd backup on Red Hat OpenShift. 3. IBM Edge Application Manager backup and recovery. 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. This component is. The example. Backing up etcd data; Replacing an unhealthy etcd member. You just need to detach your current PVC (the backup source) and attach the PVC with the data you backed up (the backup target): oc set volumes dc/myapp --add --overwrite --name=mydata \. An etcd backup plays a crucial role in disaster recovery. 2. 59 and later. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. sh script to initiate etcd backup process. x comes along with ready made backup scripts that will backup the etcd state. Follow these steps: Forward the etcd service port and place the process in the background: kubectl port-forward --namespace default. Securing etcd. 168. The contents of persistent volumes (PVs) are never part of the etcd snapshot. 2 cluster must use an etcd backup that was taken. 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. 3. Etcd [operator. tar. 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. 4. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. containers[0]. 6 due to dependencies on cluster state. To navigate the OpenShift Container Platform 4. Restoring OpenShift Container Platform from an etcd snapshot does not bring back the volume on the storage provider, and does not produce a running. Power on any cluster dependencies, such as external storage or an LDAP server. Backup - The etcd Operator performs backups automatically and transparently. ec2. Red Hat OpenShift Online. io/v1]. For <release_version>, specify the version number of OpenShift Container Platform to install, such as 4. 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. If you lose etcd quorum, you must back up etcd, take down your etcd cluster, and form a new one. For example: Backup every 30 minutes and keep the last 3 backups. You have access to the cluster as a user with the cluster-admin role. etcd-openshift-control-plane-0 5/5 Running 11 3h56m 192. You have taken an etcd backup. A known issue causes the maximum size of retained backups to be up to 10 GB greater than the configured value. OCP Disaster Recovery Part 1 - How to Create Automated ETCD Backup in OpenShift 4. By Annette Clewett and Luis RicoThe snapshot capability in Kubernetes is in tech preview at present and, as such, backup/recovery solution providers have not yet developed an end-to-end Kubernetes volume backup solution. 11. A cluster’s certificates expire one year after the installation date. However, this file is required to restore a previous state of etcd from the respective etcd snapshot. Back up etcd data. For more information, see "Backing up etcd". You should only save a snapshot from a single master host. Build, deploy and manage your applications across cloud- and on-premise infrastructure. In OpenShift Container Platform, you can also replace an unhealthy etcd member. 7. View the member list: Copy. When Data Mover is enabled, you can restore stateful applications. Back up your cluster’s etcd data regularly and store in a secure location ideally outside the OpenShift Container Platform environment. An etcd backup plays a crucial role in disaster recovery. (1) 1. 9 openshift-control-plane-0 <none> <none> etcd-openshift-control-plane-1 5/5 Running 0 3h54m 192. operator. The output of this command will show the etcd pods running. When you restore etcd, OpenShift Container Platform starts launching the previous pods on nodes and reattaching the same storage. In OpenShift Container Platform, you can also replace an unhealthy etcd member. Create the cron job defined by the CRD by running the following command: $ oc create -f etcd-recurring-backup.