I’m also trying to add new host with rke, however it always stops with this message: FATA[0006] [network] Host [31. The server have plenty of free space and i-nodes. 4 (CentOS variant). You can find in-depth information about etcd in the official documentation. The snapshot is stored in /opt/rke/etcd-snapshots. We powered up Rancher and cluster nodes, but the cluster didn’t came up succesfully. Cloud-native distributed storage platform for Kubernetes. Installation check For a slightly more involved sanity check of your installation, see Quickstart . 14 -etcd cluster has no leader. And yes, you should definitely configure etcd snapshots and back them up off the hosts. 12. Lines show the traffic flow between components. /kube_config_cluster. 4. It seeams that etcd is snapshotted every 15 minutes and the snapshots are kept for 24 hours. We have not been able to import a new RKE cluster into rancher. May 21, 2020 · Hello All, I have taken backup of rancher cluster etcd node using rke and tried to restore the backup snapshot. Nov 13, 2020 · Failed to start backup server on all etcd nodes. Today we decided to upgrade vSphere on the host so needed to shut all VMs down including k8s cluster nodes. 158) VM-2 (65. 15) with 3 etcd, after a etcd node crash, I lost the container running it. Is it possible to use one etcd cluster for multiple Kubernetes clusters? Eg. I have configured automated backups for my cluster by adding the below in cluster-config. … Jun 18, 2021 · I am trying to setup 3 node cluster with RKE (all controlplane, all worker and all etcd plane) with below things: Docker version is 20. 50" The following docker run command will expose the etcd client API over ports 4001 and 2379, and expose Nov 16, 2022 · Saved searches Use saved searches to filter your results more quickly Oct 30, 2020 · Hi Rancher users, I deployed Rancher with self certificates with a private CA option. Check etcd container logs on each host for more information Apr 7, 2020 · Unfortunately I’ve tried to setup my cluster on DigitalOcean first time using Rancher rke (just wanted to try) and dissapointed. As already pointed out, you can use RKE to have the Rancher etcd database be external, but still have Rancher managed by Kubernetes. 5. It sits at: This cluster is currently Provisioning ; areas that interact directly with it will not be available until Sep 12, 2020 · I set up Rancher on a bare metal server (I have a kubernetes installation on that server and running Rancher via Docker): but I am unable to successfully create a cluster in Rancher. Dec 22, 2023 · The Rancher server data is stored on etcd. 19. Oct 13, 2021 · Hi there, note: I’m not very comfortable in english, hope i’ll be understandable I’ve follow rancher documentation to setup RKE on a single node, after what i was able to connect to rancher GUI and everything went good. Sep 17, 2019 · Hello there, I’m trying to install RKE on RancherOS but during the installation, when RKE tries to check the health of the ETCD clusters, the test fail as you can see on debug. Rancher version: 2. A Kubernetes-native Hyperconverged infrastructure. 5, so on the etcd nodes, the /opt/rke/etcd-snapshots folder mounts the same NFS folder. The following tables break down the port requirements for traffic between the Rancher nodes: Rules for traffic between Rancher nodes A Kubernetes cluster consists of at least one etcd, controlplane, and worker node. The cluster includes a master, etcd on one node, and a worker on another node. I am getting error while restoring backup. Hi, I created a Kubernetes cluster using Rancher UI on Azure cloud. About a week ago I had to update Docker version on all working node including the cp and etcd nodes. When Rancher is used to manage a large infrastructure it is recommended to increase the default keyspace for etcd from the default 2 GB. As this is just to gain some feeling about what kind of problems we could get (before we start to use it for serious things) we provisioned pretty weak nodes with 2 CPUs, 4Gi memory and 40Gi disk. For example To schedule automatic recurring etcd snapshots, you can enable the etcd-snapshot service with extra configuration options. (1 master, etcd, worker and 2 worker), this means 1 controlplane, 1 etcd, 1 worker or 3 worker? Also exact version used helps here. 3, all basically the same as node 1, except node 2 was Control Plane, Worker and etcd and node 3 was just a Worker and etcd. These nodes only have to be able to retrieve information from EC2. 3 Important: Review the Install/Upgrade notes before upgrading to any Rancher version. Thanks RKE version: rke version v0. Note: /var/lib/rancher/rke2 is the default data directory for rke2, it is configurable however via data-dir parameter. 4 rke-core-5 Ready worker 46d v1. 0-3. We have 6 3-node HA Kubernetes clusters; 1 running Rancher, and 5 others being managed by that Rancher instance. Oct 21, 2021 · I am new to rancher and facing some issue. bundle. So I first deleted 1 etcd+cp node from a cluster, uninstalled Docker and then reinstalled the Etcd backup and recovery for Rancher launched Kubernetes clusters can be easily performed. yml and rancher-cluster. etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API Pass the config to the Kubernetes APIServer as encryption-provider-config; Once enabled any created secret will be encrypted with this key. 1 system, using RancherD following these instructions: When I get to the step where I run systemctl start rancherd-server. Lately started to get logs “Failed to update lock: etcdserver: mvcc: database space exceeded” checking etcd for the cluster we have everything looks … Apr 24, 2020 · Hello again. I believe that the etcd data is mounted as a volume on the host, so it doesn’t lose all of its data on a reboot. It’s a 2-node setup with certs from geotrust. yml file: nodes: - address: 10. yml nodes: address: lsbxcpch009 user: rancher role: [controlplane,worker Sep 6, 2022 · I have two fresh ubuntu VM(s) VM-1 (65. It's important to understand that enabling encryption for you cluster means that you can no longer access encrypted data in your etcd database and/or etcd database backups without using your encryption keys. yaml The Rancher GUI came up and when I created a new cluster, it gives me an error: [etcd] Failed to bring up Etcd Plane: etcd May 25, 2018 · Shapshots of the etcd are then stored on each etcd node unter /opt/rke/etcd-snapshots. Rancher App (Global UI) Features and Enhancements Major Jun 28, 2021 · I am trying out kubernetes and rancher for the first time and tried launching it via docker on AlmaLinux 8. Mar 20, 2020 · Hello all, I’m trying to restore an rke cluster from an etcd snapshot, and i’m having some troubles. (Yes, it is a dev setup. When you create an EKS, AKS, or GKE cluster in Rancher, then delete it, Rancher destroys the cluster. 28. Our kubernetes specification as below: kubernetes version: v1. When increasing this value you should also increase the size of the host. 132. Rancher Kubernetes Engine built for hybrid environments. Rancher recommends configuring recurrent etcd snapshots for all production clusters. You have the option of simply deleting the cluster in the Rancher UI, or your can run a script that removes Rancher components from the nodes. enabled There are three roles that can be assigned to nodes: etcd, controlplane and worker. 2 for new production workloads, due to a recently discovered bug that may cause data loss when etcd is killed under high load. My "Rancher / etcd" and "Rancher / etcd (Nodes)" graphs aren't populating either. In Cloud-Native Infrastructure Manage your entire cloud-native stack with Rancher Prime, covering OS, storage, VMs, containers, and more — on one platform. Find a kubernetes-etcd container that is in running state. But when I try to do that, getting the arm64 binary via the K3s documentation, multiple scripts, as well as a direct download, when I go to execute it, I get: Mar 14, 2019 · A cluster driver allows Rancher to create and administer a cloud host-launched Kubernetes cluster. 9 rke version: v1. x. Their published advisory provides recommendations of how to avoid triggering the issue, but as of today, there is no official fix/resolution to the May 25, 2024 · Hello, We have two rke2-servers on two RHEL 8 machines, and after a reboot on one of them, we started getting rke2[3715192]: {“level”:“warn”,“ts”:“2024 Nov 6, 2018 · Add 3 new nodes with the 2 system roles (etcd and controlplane). 4-k3s1 CNI: embedded Flannel v0. Note that if you disable encryption then any encrypted secrets will not be readable until you enable encryption again using the same key. This cluster is currently Provisioning; areas that interact directly with it will not be available until the API is ready. All nodes (including rancher server) run Ubuntu 16. Running etcd in standalone mode In order to expose the etcd API to clients outside of the Docker host you’ll need use the host IP address when configuring etcd. yml The snapshot and pki. Oct 21, 2022 · Hi everyone, I had an etcd failure on a 3 node Rancher 2. 47], try #1 INFO[0019] Removing container [cert-deployer] on host [10. Jul 31, 2019 · FATA[0212] [etcd] Failed to bring up Etcd Plane: [etcd] Etcd Cluster is not healthy When I subsequently run kubectl commands such as kubectl --kubeconfig kube_config_cluster. After some Jan 17, 2019 · In my case, Rancher was not deleting a cluster in broken etcd state, for days. The maximum setting is 8GB and the host should have enough RAM to keep the entire dataset in memory. 136. Editing Clusters in the Rancher UI The Rancher UI provides two ways to edit a cluster: With a form. 20] failed to report healthy. 8 HA Cluster type: Custom hosted on AWS, Docker version: 1. For registered clusters using etcd as a control plane, snapshots must be taken manually outside of the Rancher UI to use for backup and recovery. 3) - its ok but when I add new cluster → Custom, check etcd, worker, controlplane, copy generated command and run on the other server named “app”. Can you help? Thanks! PD: etcd-1 and etcd-data-1 are working, i don’t know why i got 2 May 25, 2021 · We have setup a production HA rancher cluster with K3S: v1. Rebuilds the etcd cluster using the local snapshot; Before you run this command, you must: Run rke remove to remove your Kubernetes cluster and clean the nodes; Download your etcd snapshot from S3, if applicable. Can be ran standalone so any k8s (not just K3s) can use Kine; Implements a subset of etcdAPI (not usable at all for general purpose etcd) Translates etcdTX calls into the desired API (Create, Update, Delete) When running larger Rancher installations with 15 or more clusters it is recommended to increase the default keyspace for etcd from the default 2GB. 1 In Rancher v2. 47 user: ubuntu role: [controlplane, worker, etcd] I start RKE installation but at the end it says: INFO[0019] Checking if container [cert-deployer] is running on host [10. 47 May 29, 2018 · Hi, I have a testcluster with 2 nodes, 1: etc/control 2:worker I saw that my pods first got deployed to the etc/control node. This section contains commands and tips for troubleshooting nodes with the etcd role. Details on which ports are used in each situation are found under Downstream Cluster Port Requirements . version v2. . How can I change this behaviour? Of course I can taint them, but I don’t really want to do … In the Rancher UI, etcd backup and recovery for Rancher launched Kubernetes clusters can be easily performed. 04 VM (4 cores, 16 GB RAM) but failed to create a cluster after several attempts. 0 Suddenly, the UI is showing that the Control Pane and etcd node is unavailable, and show that “kubelet has disk pressure”. Oct 13, 2021 · Hi folks, I’m brand new to rancher and trying it in my homelab. See #43109 and the upstream Kubernetes changelog for a full list of changes. Rancher installed on Machine3 and able to generate clusters on Machine3. 0: 1323: July 11, 2019 May 31, 2019 · For anyone else as silly as me, if you run openssl against your etcd url, it will tell you what is bad about the certs. 11 Removing Rancher Components from Registered Clusters For registered clusters, the process for removing Rancher is a little different. This is what I am doing: Click the button to Add cluster Define a name for the cluster, then click Next without changing any default settings Select all options: etcd, control and worker. 1. The easiest options are to either keep /opt/rke/etcd-snapshots as a local folder during the restore process and only mount the NFS share there after it has been completed, or to only mount the NFS share to one node with an etcd role in the beginning. The primary way to configure RKE2 is through its config file. If I shutdown any of the nodes on which etcd/Control Plane run, then the Kubernetes Cluster becomes unreachable altogether. I am getting the below response when i execute the command rke up config --name cluster. In Kubernetes, etcd is also a role for nodes that store the cluster state. The maximum setting is 8 GB and the host should have enough RAM to keep the entire dataset in memory. Oct 21, 2021 · I am new to rancher and facing some issue. Configuration Options Configuration File . management … There are also other CRDs, but I only edited these two. yml version, I get the following error: Jun 6, 2021 · Saved searches Use saved searches to filter your results more quickly Oct 11, 2018 · the Rancher Server itself, each etcd Node; and each Node in the control plane. etcd-ha:2379 W Jul 20, 2019 · RKE version: 0. We’ll go over configuring etcd to use specific ciphers which enable stronger encryption for securing intra-cluster etcd traffic. 3 Nodes with etcd+cp and 4 worker nodes. So if I’m getting this right, each API-Server in each cluster needs to have access to the same compute power as the rancher server itself? In comparison, if the etcd node in a Rancher 1. 15-rancher1 Was it restarted or did something else happen? No, I also tried to nuke_rancher_kube_node. I’ve then set up a kubernetes cluster using the web interface, containing 2 nodes, where theses 2 nodes had all the roles : Worker, control plane and etcd. 168. When i try to turn on exporter-kube-etcd. Both DCs has some amount of etcd and control plane nodes. Issue: The etcd container restarts intermittently, causing downtime in the Rancher UI Feb 5, 2019 · Other nodes were 10. Dec 14, 2022 · Cloud-Native Infrastructure Manage your entire cloud-native stack with Rancher Prime, covering OS, storage, VMs, containers, and more — on one platform. I then used gui to Jul 18, 2019 · hi, have a Rancher installation using docker image. 8 3 RHEL 8. yaml INFO[0000] Running RKE version: v0. 8. The keyspace size can also be adjusted in smaller installations if you Aug 18, 2020 · I was a Rancher 1. I sshed into the newly created node and looked at the rancher-agent container logs there is no errors: [root@mynewnode1 ~]# docker ps CONTAINER ID IMAGE COMMAND To save a snapshot of etcd from each etcd node in the cluster config file, run the rke etcd snapshot-save command. 15-rancher1)? I tried by replicating the command line I see on the working etcd nodes, adjusting the command line Mar 2, 2020 · I am trying to upload cluster. 15 cluster (k8s v1. Check etcd container logs on each host for more information Feb 21, 2020 · Hi, We have a Rancher cluster on premise, with 1 node for etcd and controlplane and 2 worker nodes. Now tryining to bootstrap a user cluster with three nodes failing with: Failed to apply the ServiceAccount needed fo… Feb 28, 2021 · This article will walk Rancher administrators through hardening the cluster communication between etcd nodes. Sep 3, 2020 · Hi, I was trying to restore my ETCD from a snapshot from Rancher’s UI but got the problem described here: https://github. In Rancher GUI get following error: [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy: hosts [x. 5 with Docker 17. ) It is a custom managed cluster, so the node was added with sudo docker run -d --privileged --restart=unless-stopped --net=host -v… Apr 26, 2021 · The following guide will show you how to run etcd under Docker using the static bootstrap process. I am able to get everything else to work just fine but the etcd node is having some issues. If Mar 15, 2022 · I installed rancher/rancher:stable (version 2. So we ssh’d into the cluster and removed the offending etcd member that didn’t exist (remove member <node_id>) - and all 3 remaining etcd nodes claim to be ‘healthy’ but it can’t recover (as rancher is Metrics, Dashboards, Alerts and more for Rancher RKE2 Etcd Integration in Sysdig Monitor. Also, I should set this flag in kube-apiserver, but the guide only talks about extra-args Mar 28, 2024 · Release v2. The 2 others etcd are fine, the whole cluster is up and running. Nov 9, 2018 · This has been working perfectly for us. May 5, 2021 · We have a Rancher Provisioned cluster (VMware driver) and when we scale up new worker nodes they sit there forever at “Waiting to register with Kubernetes”. 3. Configure RKE Use your original rancher-cluster. 3. Jul 9, 2018 · As you can see, the Rancher server stores all its resources in an etcd database, similar to how Kubernetes native resources like Pod, Namespace, etc. v2. This etcd database also runs on all three nodes, and requires an odd number of nodes so that it can always elect a leader with a majority of the etcd cluster. 51:2379, 10. The cluster will be stuck in an updating state and not move forward to upgrading controlplane or worker nodes. rkestate files. The snapshot is saved in /opt/rke/etcd-snapshots. When you delete a registered cluster through Rancher, the Rancher server disconnects from the cluster. Acessing the node leads to: This cluster is Jun 12, 2020 · Got it to work. part file out from under etcd while its in the process of taking the snapshot. 04, needs to be configured for use with Rancher. The keyspace size can also be adjusted in smaller installations if you Rebuilds the etcd cluster using the local snapshot; Before you run this command, you must: Run rke remove to remove your Kubernetes cluster and clean the nodes; Download your etcd snapshot from S3, if applicable. Manually sync the snapshot across all etcd nodes. RKE Provisioning Major Bug Fixes RKE clusters can successfully restore from an etcd snapshot. yml services: etcd: snapshot: true creation: 1h re… Dec 19, 2020 · Hello, I have a RKE cluster with 5 nodes configured: NAME STATUS ROLES AGE VERSION rke-core-1 Ready controlplane,etcd,worker 46d v1. If the etcd database cannot elect a leader, etcd can fail, requiring the cluster to be restored from backup. Check etcd container logs on each host for more information The second policy is for the nodes with the etcd or worker role. Rationale. rkestate, which is decoupled from the etcd backups. This is Rancher 2. tls. Jun 29, 2021 · docker logs etcd. Now node3 has a problem and is unable to start etcd. If an etcd node fails at any time, the upgrade will fail and no more nodes will be upgraded. I am not sure how to troubleshoot. 2) I am trying to set up a HA k3s cluster with embedded ETCD. 04. 16. Nov 17, 2021 · These instructions are for using etcdctl to access cluster information, indexes, or data or debug K3s embedded etcd when running single Node Rancher in Docker. For a breakdown of the port requirements for etcd nodes, controlplane nodes, and worker nodes in a Kubernetes cluster, refer to the port requirements for the Rancher Kubernetes Engine. Restore Operations on the Cluster May 31, 2019 · For anyone else as silly as me, if you run openssl against your etcd url, it will tell you what is bad about the certs. Installing Kubernetes 1. enabled from globlal --> tools --> monitoring --> show advanced options ( left down corner ) --> add answer --> paste | exporter-kube-etcd. yml file from cli. I would like to know how to restore the cluster functionally if one of the DCs fails permanently. 20. Security & Performance Secure your Kubernetes with Rancher Prime with zero-trust full lifecycle container management, advanced policy management and insights. 45] is not able to connect to the following ports: [10. 15 Embedded Etcd CRI: embedded Containerd v1. Place the etcd snapshot and the pki. Ensure that the etcd data directory has permissions of 700 or more restrictive. 8 Operating system and kernel: Rancher OS version: v1. Please check network policies and firewall rules Investigating, this one is the log of etcd pod that Feb 12, 2019 · [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy: hosts [10. 10. Apr 4, 2022 · The etcd maintainers have recommended against the use of etcd 3. yml Jul 5, 2024 · Hi Rancher Community, I’m facing an issue with my Rancher setup where the etcd container on the Rancher master node is restarting frequently. Since the failure was data corruption, I decided to remove the node from the cluster, and try to add it again. 6 setup. This diagram is applicable to Kubernetes clusters launched with Rancher using RKE. I’m Apr 2, 2019 · We have several Rancher managed clusters, and we reboot the nodes regularly for maintenance and have not had any issues with etcd corruption. 2. Rancher successfully running on three nodes. openssl s_client -showcerts -connect your_servername:2379 In my case, it was because the machine I was running rke froms time was 5 hours out and was creating certificates valid for 5 hours time, meaning they were 8 hours out Jan 12, 2020 · I would like to run multiple Kubernetes clusters on bare-metal, but I would hate to waste 3 physical servers per cluster for an etcd cluster. Both options make the same deletions. In this section, you'll learn how to create backups of the rke2 cluster data and to restore the cluster from backup. x, SLA applies to running Rancher Feb 12, 2019 · I have installed a single-node Rancher 2. As the Docker version has to be updated to a certain version, I could not use the normal apt-get upgrade command. pem file to id_rsa using puttyGen tool (exporting to openssh) format 2] And used address field only with the ip addresses of the openstack vms, I was able to get the cluster installed successfully. Any help will be appreciated. Separating Worker Nodes from Nodes with Other Roles When designing your cluster(s), you have two options: Oct 24, 2023 · I have cluster of ETCD and it keeps throwing abnormal error. After establishing a baseline of normal etcd operational metrics, observe them for abnormal deltas between metric refreshes, which indicate potential issues with etcd. Now the cluster is in error: [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy. I’ve followed the instructions in the docs - Feb 15, 2024 · Hi, I tried to upgrade my cluster, and somehow - rancher decided to delete two machines at ones (VSPhere provider), causing the progress to get stuck. The state of a Kubernetes cluster is maintained in etcd. io --set ingress. Tuning etcd for Large Installations. 6 k8s user and back then I was told to use a shared NFS folder to save the backup files. Here are the details: Setup: I have a Rancher master node with RKE1 configured. 7-rancher1-1. service, I get sev… Feb 12, 2020 · Hello community, we have RKE cluster of 3 nodes with all roles provisioned via vSphere cloud provider. Apr 29, 2019 · Saved searches Use saved searches to filter your results more quickly Oct 20, 2023 · 1. x RKE version is v1. If the node reports that the etcd cluster is healthy, a snapshot is created from it and optionally uploaded to S3. Sep 8, 2020 · Hello, I am facing issues while restoring etcd snapshot on my RKE cluster. Set up as follows 4x Vms running alpine linux hostnames rancher1–rancher4 (virt host is proxmox) installed docker, and ran the following to create the mgmgt/cluster: docker run -d --restart=unless-stopped -p 80:80 -p 443:443 --privileged rancher/rancher That worked, i went into the gui and all looked fine. 03. 4 rke-core-3 Ready controlplane,etcd,worker 46d v1. yml file setup (i am hiding Apr 1, 2020 · I want to change the roles of a node from worker to worker,etcd. I dont know why. It is showing restarted only. msg="stat /backup/snapshot: no such file or directory Feb 4, 2020 · To apply these options I modified the service definition in the cluster. For each etcd node in the cluster, the etcd cluster health is checked. Rancher runs up to 3 instances of etcd on 3 different hosts. If the directory is configured on the nodes as a shared mount, it will be overwritten. It was the ssh file, as soon as 1]I converted from . Setting up Clusters in a Hosted Kubernetes Provider Sep 18, 2020 · In this article, we will install an Etcd cluster and configure monitoring using Prometheus and Grafana, all with the help of Rancher. Level 1; Description. Two of the nodes are etcd and Control Plane, the other 3 are workers. What helped was removing finalizers lines from the cluster objects using the following commands: kubectl edit cluster … kubectl edit clusters. asc-dev. The idea is that, once the process is complete, we will have 3 hosts sharing the etcd and controlplane roles and 3 separate hosts with the worker role. When running the command, an additional container is created to take the snapshot. When running larger Rancher installations with 15 or more clusters it is recommended to increase the default keyspace for etcd from the default 2GB. Rancher needs to be installed on a supported Kubernetes version. I was trying to run it as a regular user instead as the root user since there seem to be certain issues about running things as root. We have a 4 node Custom cluster and having issues with the Snapshot. Snapshots of the etcd database are taken and saved either locally onto the etcd nodes or to a S3 compatible target. etcd-snapshot runs in a service container alongside the etcd container. 4 rke-core-4 Ready worker 46d v1. 6, and the cluster itself is v1. However, installing Rancher on a single-node cluster can be useful if you want to save resources by using a single node in the short term, while preserving a high-availability migration path. 27] failed to report healthy. I tried to restore the etc-backup (it has worked before in similar situations), and that made rancher “realize” that the nodes that it deleted is gone - so thats good 🙂 However, it is not stuck with this: “waiting for 2 etcd machines to Oct 29, 2020 · After creating the host, it will install Docker and launch an agent to register itself to the cluster and provision the needed components onto the host. Check etcd container logs on each host for more information Rancher Nov 27, 2018 · Hello guys, I’m having an issue with Rancher 2. In a host-launched Kubernetes cluster, your hosting platform operates the new cluster’s control plane and etcd components, while you provision and configure your worker nodes (via Rancher as well). The cluster (and Rancher installation, which runs in 1 docker container on a different machine) is Jul 26, 2024 · etcd is a consistent and highly-available key value store used as Kubernetes' backing store for all cluster data. and in rancher dashboard, i get this. For yesterday rancher in not coming up. The keyspace size can also be adjusted in smaller installations if you Jan 22, 2021 · Hallo I am trying to install a new Rancher on a newly installed Ubuntu 20. It worked fine back then so I assumed the same strategy on Rancher 2. The goal is to not have Rancher running on our individual, personal/work, computers. 6 installation need that less compute power? Old: 1 CPU 1. Oct 14, 2022 · Hey guys I have a standard Rancher 2 Setup. Hi I did search on this forum but could not find a working solution. Upgrades of Controlplane Nodes This section describes the roles for etcd nodes, controlplane nodes, and worker nodes in Kubernetes, and how the roles work together in a cluster. Rancher. Nov 25, 2020 · Hello, I have installed ubuntu 2004 with docker from official repositories. I have the simplest cluster. Below are the logs : panic: freepages: failed to get all reachable pages (page 2656: multiple references) 2021/10/21 08:55:06 [FATAL] etcd exited [WARNING] Deprecated ‘–logger=capnslog’ flag is set; use ‘–logger=zap’ flag instead [WARNING] Deprecated ‘–logger Rancher在三个不同的主机上运行多达三个 etcd 实例。如果运行 etcd 的多数主机出了故障,按以下步骤做灾难恢复: 在 Kubernetes-> Infrastructure Stacks页面中,展开 Kubernetes 栈。点击 etcd 服务。查找一个处于 running 状态的 kubernetes-etcd 容器。 Typically Rancher is installed on three RKE nodes that all have the etcd, control plane and worker roles. Copy the command generated and Nov 16, 2022 · Saved searches Use saved searches to filter your results more quickly Sep 24, 2021 · Hi, I have problems bootstraping a rancher user cluster. Using a config file allows you to set many additional options available for an RKE2 installation. Operating system and kernel: centos 7. yml file per the service example at the bottom of the page, and then ran: $ rke up --config cluster. 34. 4 But I have a problem, periodically, every certain time of use Jul 18, 2019 · have a Rancher installation using docker image. Upgrades of etcd Nodes A cluster upgrade begins by upgrading the etcd nodes one at a time. onapdemo July 16, 2018, 6:18am 1. yml, run the rke etcd snapshot-restore command to launch etcd from the backup: $ rke etcd snapshot-restore --name snapshot. When the snapshot is completed, the container is automatically removed. Contribute to rancher/rancher-etcd development by creating an account on GitHub. Jun 13, 2024 · Can you attach the complete logs from the rancher-system-agent and rke2 systemd units, and the etcd pod logs (from /var/log/pods), on the node where this occurs?I don't see how this would even happen, unless something is deleting the . get stored in a user cluster. Colors are used purely for visual aid etcd Aug 6, 2019 · On Rancher2 cluster page I’ve seen that etcd gets unhealty pretty often lately. If you need help troubleshooting core Kubernetes cluster components like: etcd; kube-apiserver; kube-controller-manager; kube-scheduler; kubelet; kube-proxy; nginx-proxy; Kubernetes resources Feb 5, 2019 · Other nodes were 10. Given its critical role, regular backups of ETCD are essential for maintaining cluster Aug 28, 2019 · Monitoring etcd wit Rancher cluster monitoring. 51:2380]. Additionally, one-time snapshots can be taken as well. sh and create the new cluster and the output was the same. Below are the logs : panic: freepages: failed to get all reachable pages (page 2656: multiple references) 2021/10/21 08:55:06 [FATAL] etcd exited [WARNING] Deprecated ‘–logger=capnslog’ flag is set; use ‘–logger=zap’ flag instead [WARNING] Deprecated ‘–logger When running larger Rancher installations with 15 or more clusters it is recommended to increase the default keyspace for etcd from the default 2GB. How can I restart the missing container (from image rancher/mirrored-coreos-etcd:v3. We’ll see how easy it is to accomplish this without the need of dependencies, as we can take full advantage of Rancher’s App Catalog. Etcd metrics display the operations of the etcd database on each of your cluster nodes. The encryption configuration is stored in the cluster state file cluster. creating one etcd cluster with Rancher and then add it to the other Kubernetes clusters with the external etcd option? However, Rancher doesn't destroy registered clusters when you delete them through the Rancher UI. In this scenario nodes in remaining DC will continue functioning, but etcd will be in an unhealthy state because it won’t be able to form the This section contains information to help you troubleshoot issues when using Rancher. x of rancher, so this was a node solely used for running Rancher using Docker? For registered cluster nodes, the Rancher UI exposes the ability to cordon, drain, and edit the node. For this I’ve done the following: stopped the rke2 server job deleted all data in the etcd data folder ran etcdtl member remove on one of the remaining nodes. In a single-node Kubernetes cluster, the Rancher server does not have high availability, which is important for running Rancher in production. 3 Highlights Rancher now supports Kubernetes v1. Evacuate the system roles (etcd and controlplane) from the original 2 hosts. On one extra Server I installed the docker version 2. 4 rke-core-2 Ready controlplane,etcd,worker 46d v1. tar. 6. To see all the resources Rancher creates in the Rancher server etcd, simply ssh in to the Rancher container, and run kubectl get crd: After the new node is added to the cluster. See #41547. x] failed to report healthy. openssl s_client -showcerts -connect your_servername:2379 In my case, it was because the machine I was running rke froms time was 5 hours out and was creating certificates valid for 5 hours time, meaning they were 8 hours out Jul 1, 2021 · I am trying out kubernetes and rancher for the first time and tried launching it via docker on AlmaLinux 8. 1 Kubectl version: Client Version: version. May 18, 2020 · etcd: extra_args: event-ttl: 72h. Type/provider of hosts: openstack. By default, the etcd-snapshot service takes a snapshot for every node that has the etcd role and stores them to local disk in /opt/rke/etcd-snapshots. com/rancher/rancher/issues/25410 So the Aug 2, 2024 · ETCD, a distributed key-value store, is integral to Kubernetes as it maintains the cluster’s state data. While creating an Amazon EC2 cluster , you must fill in the IAM Instance Profile Name (not ARN) of the created IAM role when creating the Node Jul 16, 2018 · Rancher 1. source=secret --set privateCA=true --kubeconfig . Feb 5, 2010 · External Etcd 3. Rancher 1. 18. etcd hostname_override: k8s Etcd Backup and Restore. 8. We would like to use Rancher in the same context that we are currently running Minikube. 2 and 10. gz file are expected to be saved at /opt/rke/etcd-snapshots on each etcd node. gz file in /opt/rke/etcd-snapshots. 1: 736: January 27, 2020 How to monitor spring boot? Rancher. 2 INFO[0000] Initiating Kubernetes cluster INFO[0000] [certificates] Generating admin certificates and kubeconfig INFO[0000] Successfully Deployed state Jan 23, 2018 · I | flags: recognized and used environment variable ETCD_DATA_DIR=/data/etcd W | flags: unrecognized environment variable ETCDCTL_ENDPOINT=http://etcd. Lately started to get logs “Failed to update lock: etcdserver: mvcc: database space exceeded” checking etcd for the cluster we have Jan 26, 2018 · Then I’ve run a rancher/server in docker. Cluster Config File: Instead of using the Rancher UI to choose Kubernetes options for the cluster, advanced users can create an RKE2 config file. The cluster remains live, although it's no When running larger Rancher installations with 15 or more clusters it is recommended to increase the default keyspace for etcd from the default 2GB. The advantages of configuring S3 is that if all etcd nodes are lost, your snapshot is saved remotely and can be used to restore the cluster. 6 with a 5-node Kubernetes Cluster. 3 hvm (all in AWS) If i look k8s containers i see how containers are continuously restarting. 5 GB vs. 0-k3s. May 4, 2022 · rancher/coreos-etcd:v3. yml [root@csp-centos2 etcd-snapshots]# rke up config cluster. Mar 31, 2023 · Hi, Running a 13 nodes rancher 2. Kubernetes components. May 10, 2019 · [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy: hosts [10. Before you begin Before you follow steps in this page to deploy, manage, back up or restore etcd In a single-node Kubernetes cluster, the Rancher server does not have high availability, which is important for running Rancher in production. New: 4 CPU 16GB Jun 22, 2020 · Currently having a problem with a cluster node which was restored from a file backup (basically the whole cluster was restored from a file/VM backup). etcd Nodes Rancher uses etcd as a data store in both single node and high-availability installations. To specify the RKE2 version, use the INSTALL_RKE2_VERSION environment variable when running the RKE2 installation script. The cluster is for development, so all nodes live on single physical host. If a majority of hosts running etcd fail, follow these steps: In Kubernetes-> Infrastructure Stacks, expand the Kubernetes stack. We have it sitting behind a Citrix LB and the certs/setup seem fine (at least to the browsers). Consider the level of ciphers in use and how they could impact the Oct 17, 2019 · Hi, Assuming there is a 6-nodes k8s cluster spanning across 2 data centers, 3 nodes in each. Command line arguments and environment variables are also available, but RKE2 is installed as a systemd service and thus these are not as easy to leverage. [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy: hosts [192. 4 RKE config: cluster. Rancher was reporting it could not find one of the nodes (which was not in the cluster anymore). Of course, I turned to Google and it's indicating to use etcdctl to try to force a . I am referring to the official document Here is what I have executed on VM-1 curl -sfL ht… Etcd Metrics Note: Only supported for Rancher launched Kubernetes clusters. Sep 25, 2023 · Machine 3, also running Ubuntu 22. 54. 2) on an Ubuntu 20. The cipher suites defined in the example could trade off speed for stronger encryption. I created one with all three roles (etcd, Control Pane and Worker) as a test, but the cluster is stuck in the Provisioning state with the error: This cluster is currently Provisioning; areas that interact directly Mar 5, 2015 · The etcd project does not currently maintain a helm chart, however you can follow the instructions provided by Bitnami’s etcd Helm chart. Aug 21, 2019 · Hi folks, I’m tiring to configure rancher cluster monitoring for get metrics from etcd server, k8s has bean deployed wit kuberspay ( etcd run in all master node on port 2379 ). Exec into the container, by using Execute Shell. db --config cluster. The Rancher GUI came up and when I try to create a new cluster, it is stuck in . Oct 27, 2020 · The command I used: helm install rancher rancher-latest/rancher --namespace cattle-system --set hostname=rancher-draco. To find out which versions of Kubernetes are supported for your Rancher version, refer to the support maintenance terms. With server running, I’ve deployed new k8s cluster with one host, using RancherOS AMI 1. 13. 2 OS A super user with sudo privilage on all three nodes and ssh_key pair copied in the home directory of the user (ssh-copy-id) VM’s are provisioned in Azure Infrastructure Below is my cluster. Click on the etcd service. export HostIP="192. May 26, 2021 · I installed a 3 node cluster with rke one year ago. Steps to Reproduce: I am tyring to run rke -d up command. If your Kubernetes cluster uses etcd as its backing store, make sure you have a back up plan for the data. Add 1 new node with the worker role. The keyspace size can also be adjusted in smaller installations if you Nov 24, 2020 · Hi, I successfully installed Rancher (2. But i’m having same issue. 11 Ensure that the etcd data directory permissions are set to 700 or more restrictive Profile Applicability. Does anyone know, if that is also possible for the etcd of Rancher itself, if Rancher is installed as single node? Regards, Domenic Nov 6, 2017 · [etcd] Failed to bring up Etcd Plane: etcd cluster is unhealthy: hosts [10. 6+k3s1. 0. ahcvhp zzwefq khdgms bvjixwd hzcgyz cashgwp kofda huw lhcif hzjw