傻瓜化备份/恢复K8S集群Etcd数据
媒介：备份告急数据，简化重复操纵，让一指禅、点点点也能完成运维使命。
脚本呈现界面如下：
https://img-blog.csdnimg.cn/direct/48845d4a213743df8a5bb588880397a7.png
1、检察Etcd版本
root@master:~# cat /etc/kubernetes/manifests/etcd.yaml | grep image: | awk '{print $2}'
registry.aliyuncs.com/google_containers/etcd:3.5.10-0 2、下载安装Etcd操纵命令etcdctl
#下载etcdctl
root@master:~# wget https://github.com/etcd-io/etcd/releases/download/v3.5.10/etcd-v3.5.10-linux-amd64.tar.gz
root@master:~#
#解压缩
root@master:~# tar -zxvf etcd-v3.5.10-linux-amd64.tar.gz
root@master:~#
#移进可执行程序目录
root@master:~# sudo mv etcd-v3.5.10-linux-amd64/etcdctl /usr/bin/
root@master:~# sudo mv etcd-v3.5.10-linux-amd64/etcdutl /usr/bin/
root@master:~#
#查看一下etcdctl版本
root@master:~# etcdctl
NAME:
etcdctl - A simple command line client for etcd3.
USAGE:
etcdctl
VERSION:
3.5.10
API VERSION:
3.5
#创建备份目录
root@master:~# mkdir -p /data/backup/file 3、Etcd数据备份/恢复脚本
#!/bin/bash
#AUTHOR : Created by YaoButing
#PLATFORM : Ubuntu 20.04.6 LTS (Focal Fossa）
#VERSION : 1.0
#DATE : 2024-05-06
#DESCRIPTION: This script is used to muanual backup/restore etcd data.
###############################################################################
NUMBER=100
while (($NUMBER>0))
do
echo " "
echo " 请选择需要执行的操作 "
echo "********************************************************************"
echo "* *"
echo "* [ 1 ]. Etcd数据备份 [ 2 ]. Etcd数据恢复 *"
echo "* *"
echo "********************************************************************"
echo "* 按 0 推出脚本 *"
read -p "请输入将要执行的动作序号:" NUMBER
echo " "
echo " "
if (($NUMBER==1))
then
echo "###########--1--###########开始备份Etcd数据###############"
echo " "
ETCDCTL_API=3 etcdctl --endpoints=https://127.0.0.1:2379 \
--cacert=/etc/kubernetes/pki/etcd/ca.crt \
--cert=/etc/kubernetes/pki/etcd/server.crt \
--key=/etc/kubernetes/pki/etcd/server.key \
snapshot save /data/backup/etcd-snapshot-`date "+%Y-%m-%d"`.db
echo ""
echo "###########--1--############Etcd数据备份完毕##############"
echo " "
echo "###########--1--############验证Etcd快照##################"
echo " "
ETCDCTL_API=3 etcdctl --write-out=table snapshot status /data/backup/etcd-snapshot-`date "+%Y-%m-%d"`.db
echo " "
elif (($NUMBER==2))
then
echo "###########--2--###########下面是现有的Etcd备份文件########"
ls /data/backup/ | sort -k 2 | nl
ls /data/backup/ | sort -k 2 > /data/backup/file/file.txt
read -p "#####-----------请输入要恢复的Etcd备份文件行号:" DB
etcdfile=$(sed -n "${DB}p" /data/backup/file/file.txt)
echo ""
echo "创建恢复目录'/var/lib/etcd-restore'"
mkdir /opt/backup
mkdir /var/lib/etcd-restore
mv /etc/kubernetes/manifests/kube* /opt/backup/
ETCDCTL_API=3 etcdctl --endpoints=https://127.0.0.1:2379 \
--cacert=/etc/kubernetes/pki/etcd/ca.crt \
--cert=/etc/kubernetes/pki/etcd/server.crt \
--key=/etc/kubernetes/pki/etcd/server.key \
--data-dir=/var/lib/etcd-restore \
snapshot restore /data/backup/$etcdfile
cp /opt/backup/* /etc/kubernetes/manifests/
mv /etc/kubernetes/manifests/etcd.yaml /etc/kubernetes/manifests/bak.etcd.yaml
sed 's!/var/lib/etcd!/var/lib/etcd-restore!'/etc/kubernetes/manifests/bak.etcd.yaml > /etc/kubernetes/manifests/etcd.yaml
cat /etc/kubernetes/manifests/etcd.yaml | grep '/var/lib/etcd-restore'
systemctl daemon-reload
systemctl restart kubelet
echo ""
echo "###########--2--###########Etcd数据恢复结束################"
echo ""
echo "数据恢复已结束，但仍需等待几分钟再进行查看验证..."
elif (($NUMBER==0))
then
echo "###########--- 程序即将退出 ---######################"
else
echo "########--- 输入错误，请按照指定序号输入 --------############"
fi
done
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