• 四、etcd数据库集群部署


    1、下载安装
    二进制下载:
    https://github.com/coreos/etcd/releases/download/v3.3.13/etcd-v3.3.13-linux-amd64.tar.gz

     1 [root@k8s-master01 ~]# tar xf etcd-v3.3.13-linux-amd64.tar.gz 
     2 [root@k8s-master01 ~]# cd etcd-v3.3.13-linux-amd64
     3 [root@k8s-master01 etcd-v3.3.13-linux-amd64]# ll
     4 总用量 29776
     5 drwxr-xr-x 10 1000 1000 4096 5月 3 2019 Documentation
     6 -rwxr-xr-x 1 1000 1000 16927136 5月 3 2019 etcd
     7 -rwxr-xr-x 1 1000 1000 13498880 5月 3 2019 etcdctl
     8 -rw-r--r-- 1 1000 1000 38864 5月 3 2019 README-etcdctl.md
     9 -rw-r--r-- 1 1000 1000 7262 5月 3 2019 README.md
    10 -rw-r--r-- 1 1000 1000 7855 5月 3 2019 READMEv2-etcdctl.md

    只有etcd,etcdctl两个文件有用

    2、安装etcd

     1 #创建etcd所需要的目录
     2 [root@k8s-master01 opt]# mkdir -p etcd/{bin,cfg,ssl}
     3 #拷贝下载下来的可执行命令
     4 [root@k8s-master01 ~]# cp etcd-v3.3.13-linux-amd64/{etcd,etcdctl} /opt/etcd/bin/
     5 #拷贝我们生成的自签证书
     6 [root@k8s-master01 ~]# cp k8s/tls/etcd/{server,server-key,ca}.pem /opt/etcd/ssl/
     7 [root@k8s-master01 ~]# tree /opt/etcd
     8 /opt/etcd
     9 ├── bin
    10 │   ├── etcd
    11 │   └── etcdctl
    12 ├── cfg
    13 └── ssl
    14     ├── ca.pem
    15     ├── server-key.pem
    16     └── server.pem

    3、生成启动和配置文件
    #配置文件

     1 [root@k8s-master01 ~]# cat /opt/etcd/cfg/etcd.conf 
     2 
     3 #[Member]
     4 ETCD_NAME="etcd-1"
     5 ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
     6 ETCD_LISTEN_PEER_URLS="https://etcd01:2380"
     7 ETCD_LISTEN_CLIENT_URLS="https://etcd01:2379"
     8 
     9 #[Clustering]
    10 ETCD_INITIAL_ADVERTISE_PEER_URLS="https://etcd01:2380"
    11 ETCD_ADVERTISE_CLIENT_URLS="https://etcd01:2379"
    12 ETCD_INITIAL_CLUSTER="etcd-1=https://etcd01:2380,etcd-2=https://etcd02:2380,etcd-3=https://etcd03:2380"
    13 ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
    14 ETCD_INITIAL_CLUSTER_STATE="new"
    View Code

    #启动文件

     1 [root@k8s-master01 etcd]# cat /opt/etcd/etcd.service 
     2 [Unit]
     3 Description=Etcd Server
     4 After=network.target
     5 After=network-online.target
     6 Wants=network-online.target
     7 
     8 [Service]
     9 Type=notify
    10 EnvironmentFile=/opt/etcd/cfg/etcd.conf
    11 ExecStart=/opt/etcd/bin/etcd 
    12         --name=${ETCD_NAME} 
    13         --data-dir=${ETCD_DATA_DIR} 
    14         --listen-peer-urls=${ETCD_LISTEN_PEER_URLS} 
    15         --listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 
    16         --advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} 
    17         --initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} 
    18         --initial-cluster=${ETCD_INITIAL_CLUSTER} 
    19         --initial-cluster-token=${ETCD_INITIAL_CLUSTER_TOKEN} 
    20         --initial-cluster-state=new 
    21         --cert-file=/opt/etcd/ssl/server.pem 
    22         --key-file=/opt/etcd/ssl/server-key.pem 
    23         --peer-cert-file=/opt/etcd/ssl/server.pem 
    24         --peer-key-file=/opt/etcd/ssl/server-key.pem 
    25         --trusted-ca-file=/opt/etcd/ssl/ca.pem 
    26         --peer-trusted-ca-file=/opt/etcd/ssl/ca.pem
    27 Restart=on-failure
    28 LimitNOFILE=65536
    29 
    30 [Install]
    31 WantedBy=multi-user.target
    View Code

    4、拷贝etcd目录到etcd01,etcd02,etcd03机器上

    1 [root@k8s-master01 ~]# scp -r /opt/etcd/ etcd01:/opt/
    2 [root@k8s-master01 ~]# scp -r /opt/etcd/ etcd02:/opt/
    3 [root@k8s-master01 ~]# scp -r /opt/etcd/ etcd03:/opt/


    5、分别修改3台etcd的cfg/etcd.conf文件,IP为自己的IP
    #etcd01

    [root@etcd01 ~]# cat /opt/etcd/cfg/etcd.conf 
    
    #[Member]
    ETCD_NAME="etcd-1"
    ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
    ETCD_LISTEN_PEER_URLS="https://10.16.8.161:2380"
    ETCD_LISTEN_CLIENT_URLS="https://10.16.8.161:2379"
    
    #[Clustering]
    ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.16.8.161:2380"
    ETCD_ADVERTISE_CLIENT_URLS="https://10.16.8.161:2379"
    ETCD_INITIAL_CLUSTER="etcd-1=https://10.16.8.161:2380,etcd-2=https://10.16.8.162:2380,etcd-3=https://10.16.8.163:2380"
    ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
    ETCD_INITIAL_CLUSTER_STATE="new"

    #etcd02

    #[Member]
    ETCD_NAME="etcd-2"
    ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
    ETCD_LISTEN_PEER_URLS="https://10.16.8.162:2380"
    ETCD_LISTEN_CLIENT_URLS="https://10.16.8.162:2379"
    
    #[Clustering]
    ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.16.8.162:2380"
    ETCD_ADVERTISE_CLIENT_URLS="https://10.16.8.162:2379"
    ETCD_INITIAL_CLUSTER="etcd-1=https://10.16.8.161:2380,etcd-2=https://10.16.8.162:2380,etcd-3=https://10.16.8.163:2380"
    ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
    ETCD_INITIAL_CLUSTER_STATE="new"


    #etcd03

    [root@etcd03 ~]# cat /opt/etcd/cfg/etcd.conf
    
    #[Member]
    ETCD_NAME="etcd-3"
    ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
    ETCD_LISTEN_PEER_URLS="https://10.16.8.163:2380"
    ETCD_LISTEN_CLIENT_URLS="https://10.16.8.163:2379"
    
    #[Clustering]
    ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.16.8.163:2380"
    ETCD_ADVERTISE_CLIENT_URLS="https://10.16.8.163:2379"
    ETCD_INITIAL_CLUSTER="etcd-1=https://10.16.8.161:2380,etcd-2=https://10.16.8.162:2380,etcd-3=https://10.16.8.163:2380"
    ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
    ETCD_INITIAL_CLUSTER_STATE="new"


    6、3台etcd机器上分别拷贝etcd.service到/usr/lib/systemd/system

    [root@etcd01 ~]# mv /opt/etcd/etcd.service /usr/lib/systemd/system
    [root@etcd02 ~]# mv /opt/etcd/etcd.service /usr/lib/systemd/system
    [root@etcd03 ~]# mv /opt/etcd/etcd.service /usr/lib/systemd/system

    7、启动和开机启动etcd

    [root@etcd01 ~]# systemctl daemon-reload
    [root@etcd01 ~]# systemctl start etcd
    [root@etcd01 ~]# systemctl enable etcd

    8、查看集群状态

    [root@etcd01 ~]# /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://10.16.8.161:2379,https://10.16.8.162:2379,https://10.16.8.163:2379" 
     cluster-health
    
    member 592bed4fa345de89 is healthy: got healthy result from https://10.16.8.163:2379
    member 7fc93466fcfffccf is healthy: got healthy result from https://10.16.8.162:2379
    member d83d38380a38f404 is healthy: got healthy result from https://10.16.8.161:2379
    cluster is healthy
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  • 原文地址:https://www.cnblogs.com/xw115428/p/11955946.html
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