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Questions tagged [etcd]

etcd is a highly-available key value store for shared configuration and service discovery, inspired by Apache ZooKeeper and doozer.

etcd is a highly-available key value store for shared configuration and service discovery, inspired by Apache ZooKeeper and doozer, with a focus on being:

  • Simple: curl'able user facing API (HTTP+JSON)
  • Secure: optional SSL client cert authentication
  • Fast: benchmarked 1000s of writes/s per instance
  • Reliable: properly distributed using Raft

etcd is written in Go and uses the Raft consensus algorithm to manage a highly-available replicated log.

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deis images with dependencies of etcd have error executing bin/boot script: "waiting for etcd at :4001..."

I'm building a Deis cluster with 3 nodes on CoreOS as recommend the Readme Section with Vagrant, but when I execute: make run some error occur on registry.service. After some time inspecting deis/image, I found that all image with dependencies of…
enrique-carbonell
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k8s scheduler wants to schedule pod on non existing node

I am running k8s: clientVersion: buildDate: "2023-08-13T08:25:01Z" compiler: gc gitCommit: 25b4e43193bcda6c7328a6d147b1fb73a33f1598 gitTreeState: dirty gitVersion: v1.27.3-dirty goVersion: go1.20.5 major: "1" minor: 27+ platform:…
Kevin
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How to import YAML structure in etcd

We have below YAML structure which consists of multiple key / values pair . these are basically dictionary kind of structure used in kubernetes . Instead of keeping these configuration items in YAML file , we thought to use the key/value store…
user2315104
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how to implemet a grpc resolver with etcd in C++?

2 problems: i've built and install grpc with guide https://github.com/grpc/grpc/blob/master/BUILDING.md, grpc tag is v1.41.0. but i can't find resolver.h nor balancer.h in /usr/local/include/grpc++/, but in grpc source code its in…
peng alan
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etcd not starting, getting error while probing status

I am trying to install Kubernetes, the hard way. Instead, of installing on GCP or using VirtualBox, I am installing on AWS. I'm using Red hat Linux image. I am using 3 nodes for etcd in Stacked Topology. However, while starting the etcd service, it…
CuriousMind
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Openshift secure delete using "oc delete secret"

I have been asked by security auditors to explain the underlying process of oc delete secret What they want to establish is that the secret is not recoverable by forensics tools for example, once deleted. Thanks in advance for any input.
Michael
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ETCD 3.4.3 not starting with systemd file

I am trying to run a single node ETCD 3.4.3 cluster. I used to run ETCD cluster with the same configuration file before but now the configuration is not working for any version of ETCD. The ETCD server is a virtualbox(6.0.14r133895) machine spawned…
zaman sakib
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How to apply new config parameter/ flags to etcd server

Team, I have 3 etcd servers running and I need to apply new config by exporting variables to values. But how should I assure they are applied and how to apply after exporting variables? Basically, I exec into etcdPod and did this but how to assure…
AhmFM
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Generate alarms and notifications and send mail based on a condition in Python

I am running an etcd cluster in my machine. I have added three members too. Is it possible to generate the an alarm/notification based on the condition that cluster is healthy/not-healthy and is it possible to read some email-ids from a YAML file…
Karan Saxena
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Why do we need to provide the client's private key to the etcd server

could somebody please explain why, when configuring a secure etcd cluster, we need to provide the client private key? Cf --key-file here: https://coreos.com/etcd/docs/latest/op-guide/security.html I've never seen this in HTTPS 2 way ssl, for me,…
khaldoune
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Ansible etcd lookup plugin issue

I've etcd running on the Ansible control machine (local). I can get and put the values as shown below but Ansible wouldn't get values, any thoughts? I can also get the value using curl I got this simple playbook #!/usr/bin/env…
Sahas
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Kubernetes refuses to work with rkt, containers not starting, wrong systemd error

I have hit a wall trying to setup kubernetes with rkt on coreos when deploying the master node. This is the main problem I see from the kubelet logs...some systemd error which is obviously wrong because coreos latest stable uses 225... I have…
untore
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Kubernetes: Frequently unable to communicate with kublet api (connection refused)

I'm deploying a new kubernetes cluster on a single node (Ubuntu 22.04) The problem is I frequently get this error when running any kubectl commands (hostnames changed) The connection to the server k8cluster.example.com:6443 was refused - did you…
Aditya K
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How stop and start the api server instance in kubeadm installed kubernetes? (etcd restore)

In order to restore an etcd backup the documentation says (https://kubernetes.io/docs/tasks/administer-cluster/configure-upgrade-etcd/#restoring-an-etcd-cluster): stop all API server instances restore state in all etcd instances restart all API…
michael.kebe
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If I delete the pod data in etcd, what will happen in kubelet?

If I stop the Apiserver and delete a pod data in etcd, then I restart the Apiserver. What will happen in kubelet and if the kubelet will delete the real pod?
kongshuo
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