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.gz1 [root@k8s-master01 ~]# tar xf etcd-v3.3.13-linux-amd64.tar.gz2 [root@k8s-master01 ~]# c...
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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"
#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
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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