kubernetes单节点部署ETCD的教程

这篇文章给大家分享的是kubernetes单节点部署ETCD的教程。小编觉得挺实用的，因此分享给大家学习。如下资料是关于部署ETCD的内容。

软件采用版本

服务器角色分配

前期注意

所有实验虚拟机均已关闭selinux核心防护功能

建立工作目录用于存放二进制软件包

[root@master ~]# cd /[root@master /]# mkdir k8s

安装ETCD数据库（三节点备份）

master端方面

下载ca证书创建、管理工具cfssl

[root@master k8s]# curl -L https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -o /usr/local/bin/cfssl[root@master k8s]# curl -L https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -o /usr/local/bin/cfssljson[root@master k8s]# curl -L https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -o /usr/local/bin/cfssl-certinfo[root@master k8s]# chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson /usr/local/bin/cfssl-certinfo

生成ca证书

//定义ca证书，生成ca证书配置文件[root@master k8s]# cat > ca-config.json < ca-csr.json <

生成etcd各节点之间通信证书

（注意IP地址的变化）

//生成etcd节点之间的通信验证签名//节点地址必须要更改[root@master k8s]# cat > server-csr.json <

配置etcd二进制文件包

//解压安装etcd[root@master k8s]# tar zxf etcd-v3.3.10-linux-amd64.tar.gz//建立存放etcd配置文件、命令、证书的目录[root@master k8s]# mkdir -p /opt/etcd/{cfg,bin,ssl}[root@master k8s]# ls /opt/etcd/bin  cfg  ssl//将etcd中的文件分门别类存放[root@master k8s]# mv etcd-v3.3.10-linux-amd64/etcd /opt/etcd/bin/[root@master k8s]# mv etcd-v3.3.10-linux-amd64/etcdctl /opt/etcd/bin/[root@master k8s]# cp -p *.pem /opt/etcd/ssl///etcd命令文件[root@master k8s]# ls /opt/etcd/bin/etcd  etcdctl//etcd证书[root@master k8s]# ls /opt/etcd/ssl/ca-key.pem  ca.pem  server-key.pem  server.pem

建立etcd配置文件

[root@master k8s]# cat </opt/etcd/cfg/etcd//[Member]ETCD_NAME="etcd01"ETCD_DATA_DIR="/var/lib/etcd/default.etcd"ETCD_LISTEN_PEER_URLS="https://192.168.142.220:2380"ETCD_LISTEN_CLIENT_URLS="https://192.168.142.220:2379"//[Clustering]ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.142.220:2380"ETCD_ADVERTISE_CLIENT_URLS="https://192.168.142.220:2379"ETCD_INITIAL_CLUSTER="etcd01=https://192.168.142.220:2380,etcd02=https://192.168.142.136:2380,etcd03=https://192.168.142.132:2380"ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"ETCD_INITIAL_CLUSTER_STATE="new"EOF

建立etcd启动脚本

[root@master k8s]# cat </usr/lib/systemd/system/etcd.service[Unit]Description=Etcd ServerAfter=network.targetAfter=network-online.targetWants=network-online.target[Service]Type=notifyEnvironmentFile=/opt/etcd/cfg/etcdExecStart=/opt/etcd/bin/etcd \--name=etcd01 \--data-dir=\${ETCD_DATA_DIR} \--listen-peer-urls=\${ETCD_LISTEN_PEER_URLS} \--listen-client-urls=\${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \--advertise-client-urls=\${ETCD_ADVERTISE_CLIENT_URLS} \--initial-advertise-peer-urls=\${ETCD_INITIAL_ADVERTISE_PEER_URLS} \--initial-cluster=\${ETCD_INITIAL_CLUSTER} \--initial-cluster-token=\${ETCD_INITIAL_CLUSTER_TOKEN} \--initial-cluster-state=new \--cert-file=/opt/etcd/ssl/server.pem \--key-file=/opt/etcd/ssl/server-key.pem \--peer-cert-file=/opt/etcd/ssl/server.pem \--peer-key-file=/opt/etcd/ssl/server-key.pem \--trusted-ca-file=/opt/etcd/ssl/ca.pem \--peer-trusted-ca-file=/opt/etcd/ssl/ca.pemRestart=on-failureLimitNOFILE=65536[Install]WantedBy=multi-user.targetEOF

推送证书、配置文件、启动脚本至node节点上

//将证书、配置文件推送至其它节点[root@master ~]# scp -r /opt/etcd/ root@192.168.142.136:/opt/[root@master ~]# scp -r /opt/etcd/ root@192.168.142.132:/opt///推送启动脚本[root@master ~]# scp /usr/lib/systemd/system/etcd.service root@192.168.142.136:/usr/lib/systemd/system/[root@master ~]# scp /usr/lib/systemd/system/etcd.service root@192.168.142.132:/usr/lib/systemd/system/

node端方面

更改各node节点收到的配置文件

node1

[root@node1 etcd]# vim /opt/etcd/cfg/etcd//[Member]ETCD_NAME="etcd02"                      //节点名称ETCD_DATA_DIR="/var/lib/etcd/default.etcd"ETCD_LISTEN_PEER_URLS="https://192.168.142.136:2380"               //节点地址ETCD_LISTEN_CLIENT_URLS="https://192.168.142.136:2379"               //节点地址//[Clustering]ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.142.136:2380"               //节点地址ETCD_ADVERTISE_CLIENT_URLS="https://192.168.142.136:2379"               //节点地址

node 2

[root@node2 ~]# vim /opt/etcd/cfg/etcd//[Member]ETCD_NAME="etcd03"ETCD_DATA_DIR="/var/lib/etcd/default.etcd"ETCD_LISTEN_PEER_URLS="https://192.168.142.132:2380"                      //节点名称ETCD_LISTEN_CLIENT_URLS="https://192.168.142.132:2379"                      //节点名称//[Clustering]ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.142.132:2380"                      //节点名称ETCD_ADVERTISE_CLIENT_URLS="https://192.168.142.132:2379"                      //节点名称

所有节点

开启服务

//各节点关防火墙[root@node1 etcd]# systemctl stop firewalld.service[root@node1 etcd]# setenforce 0[root@node1 etcd]# systemctl disable firewalld.service//开启etcd服务[root@node1 etcd]# systemctl start etcd[root@node1 etcd]# systemctl enable etcd

群集健康检查，查看群集成员

//群集各节点健康检查[root@master ~]# /opt/etcd/bin/etcdctl --ca-file=/opt/etcd/ssl/ca.pem \--cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem \--endpoints="https://192.168.142.220:2379,https://192.168.142.136:2379,https://192.168.142.132:2379" \cluster-health//查看etcd群集成员[root@master ~]# /opt/etcd/bin/etcdctl --ca-file=/opt/etcd/ssl/ca.pem \--cert-file=/opt/etcd/ssl/server.pem --key-file=/opt/etcd/ssl/server-key.pem \--endpoints="https://192.168.142.220:2379,https://192.168.142.136:2379,https://192.168.142.132:2379" member list

以上就是kubernetes单节点部署ETCD的教程，内容较为全面，而且我也相信有相当的一些工具可能是我们日常工作可能会见到或用到的。通过这篇文章，希望你能收获更多。