如何在使用kubeadm创建的Kubernetes集群上备份etcd-RPC错误:代码= 13 [英] How to backup etcd on a Kubernetes cluster created with kubeadm - rpc error: code = 13

问题描述

我有一个用kubeadm创建的K8s集群，它由一个主节点和两个工作器组成.

I have a K8s cluster created with kubeadm that consists of a master node and two workers.

我正在关注有关etcd备份的此文档文章: https://kubernetes.io/docs/tasks/administer-cluster/configure-upgrade-etcd/#backing-up-an-etcd-cluster

I am following this documentation article regarding the etcd backup: https://kubernetes.io/docs/tasks/administer-cluster/configure-upgrade-etcd/#backing-up-an-etcd-cluster

我必须使用etcdctl来备份etcd数据库，所以我进入运行在主节点上的etcd pod中，从那里进行操作:kubectl exec -it -n kube-system etcd-ip-x-x-x-x sh

I have to use etcdctl to backup the etcd db so I sh into the etcd pod running on the master node to do it from there: kubectl exec -it -n kube-system etcd-ip-x-x-x-x sh

注意:主节点在此路径/var/lib/etcd中托管etcd数据库，该路径作为/var/lib/etcd中的VolumeMount安装在Pod上.

NOTE: The master node hosts the etcd database in this path /var/lib/etcd which is mounted on the pod as a VolumeMount in /var/lib/etcd.

按照我运行的文档操作:ETCDCTL_API=3 etcdctl --endpoints 127.0.0.1:2379 snapshot save snapshotdb，它返回以下错误:

Following the doc I run: ETCDCTL_API=3 etcdctl --endpoints 127.0.0.1:2379 snapshot save snapshotdb and it returns the following error:

Error:  rpc error: code = 13 desc = transport: write tcp 127.0.0.1:44464->127.0.0.1:2379: write: connection reset by peer

这是什么问题?

推荐答案

我设法使其能够将证书信息添加到命令中:

I managed to make it work adding the certificates info to the command:

ETCDCTL_API=3 etcdctl --endpoints https://127.0.0.1:2379 --cacert=/etc/kubernetes/pki/etcd/ca.crt --cert=/etc/kubernetes/pki/etcd/healthcheck-client.crt --key /etc/kubernetes/pki/etcd/healthcheck-client.key snapshot save ./snapshot.db

这篇关于如何在使用kubeadm创建的Kubernetes集群上备份etcd-RPC错误:代码= 13的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！