手动部署ETCD集群
0.准备etcd软件包
[[email protected] k8s]# wget https://github.com/coreos/etcd/releases/download/v3.2.18/etcd-v3.2.18-linux-amd64.tar.gz
[[email protected] k8s]# tar zxf etcd-v3.2.18-linux-amd64.tar.gz
[[email protected] k8s]# cd etcd-v3.2.18-linux-amd64
[[email protected] etcd-v3.2.18-linux-amd64]# cp etcd etcdctl /data/kubernetes/bin/
#拷贝到其他2个master节点
[[email protected] etcd-v3.2.18-linux-amd64]# scp etcd etcdctl 10.31.90.202:/data/kubernetes/bin/
[[email protected] etcd-v3.2.18-linux-amd64]# scp etcd etcdctl 10.31.90.203:/data/kubernetes/bin/
1.创建 etcd 证书签名请求:
==这里需要列出所有需要安装etcd节点的ip,不然会导致后续报错。==
[[email protected] ssl]# vim etcd-csr.json
{
"CN": "etcd",
"hosts": [
"127.0.0.1",
"10.31.90.201",
"10.31.90.202",
"10.31.90.203"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "BeiJing",
"L": "BeiJing",
"O": "k8s",
"OU": "System"
}
]
}
2.生成 etcd 证书和私钥:
[[email protected] ~]# cfssl gencert -ca=/data/kubernetes/ssl/ca.pem -ca-key=/data/kubernetes/ssl/ca-key.pem -config=/data/kubernetes/ssl/ca-config.json -profile=kubernetes etcd-csr.json | cfssljson -bare etcd
会生成以下证书文件
[[email protected] ssl]# ls -l etcd*
-rw-r--r-- 1 root root 1062 Dec 24 17:33 etcd.csr
-rw-r--r-- 1 root root 296 Dec 24 17:32 etcd-csr.json
-rw------- 1 root root 1679 Dec 24 17:33 etcd-key.pem
-rw-r--r-- 1 root root 1436 Dec 24 17:33 etcd.pem
3.将证书移动到master节点的/data/kubernetes/ssl目录下
[[email protected] ssl]# cp etcd*.pem /data/kubernetes/ssl/
[[email protected] ssl]# scp etcd*.pem 10.31.90.202:/data/kubernetes/ssl/
[[email protected] ssl]# scp etcd*.pem 10.31.90.203:/data/kubernetes/ssl/
[[email protected] ssl]# rm -f etcd.csr etcd-csr.json
4.设置ETCD配置文件
[[email protected] k8s]# vim /data/kubernetes/cfg/etcd.conf
#[member]
ETCD_NAME="etcd-node1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
#ETCD_SNAPSHOT_COUNTER="10000"
#ETCD_HEARTBEAT_INTERVAL="100"
#ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="https://10.31.90.201:2380"
ETCD_LISTEN_CLIENT_URLS="https://10.31.90.201:2379,https://127.0.0.1:2379"
#ETCD_MAX_SNAPSHOTS="5"
#ETCD_MAX_WALS="5"
#ETCD_CORS=""
#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.31.90.201:2380"
# if you use different ETCD_NAME (e.g. test),
# set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="etcd-node1=https://10.31.90.201:2380,etcd-node2=https://10.31.90.202:2380,etcd-node3=https://10.31.90.203:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="k8s-etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="https://10.31.90.201:2379"
#[security]
CLIENT_CERT_AUTH="true"
ETCD_CA_FILE="/data/kubernetes/ssl/ca.pem"
ETCD_CERT_FILE="/data/kubernetes/ssl/etcd.pem"
ETCD_KEY_FILE="/data/kubernetes/ssl/etcd-key.pem"
PEER_CLIENT_CERT_AUTH="true"
ETCD_PEER_CA_FILE="/data/kubernetes/ssl/ca.pem"
ETCD_PEER_CERT_FILE="/data/kubernetes/ssl/etcd.pem"
ETCD_PEER_KEY_FILE="/data/kubernetes/ssl/etcd-key.pem"
5.创建ETCD系统服务
[[email protected] k8s]# vim /etc/systemd/system/etcd.service
[Unit]
Description=Etcd Server
After=network.target
[Service]
Type=simple
WorkingDirectory=/var/lib/etcd
EnvironmentFile=-/data/kubernetes/cfg/etcd.conf
# set GOMAXPROCS to number of processors
ExecStart=/bin/bash -c "GOMAXPROCS=$(nproc) /data/kubernetes/bin/etcd"
Type=notify
[Install]
WantedBy=multi-user.target
6.重新加载系统服务
[[email protected] k8s]# systemctl daemon-reload
[[email protected] k8s]# systemctl enable etcd
[[email protected] k8s]# scp /data/kubernetes/cfg/etcd.conf 10.31.90.202:/data/kubernetes/cfg/
[[email protected] k8s]# scp /data/kubernetes/cfg/etcd.conf 10.31.90.203:/data/kubernetes/cfg/
[[email protected] k8s]# scp /etc/systemd/system/etcd.service 10.31.90.202:/etc/systemd/system/
[[email protected] k8s]# scp /etc/systemd/system/etcd.service 10.31.90.203:/etc/systemd/system/
在所有节点上创建etcd存储目录并启动etcd
[[email protected] ~]# mkdir /var/lib/etcd
[[email protected] ~]# systemctl start etcd
[[email protected] ~]# systemctl status etcd
下面需要大家在所有的 etcd 节点重复上面的步骤,并修改对应的配置文件,直到所有机器的 etcd 服务都已启动。
7.验证集群
[[email protected] k8s]# etcdctl --endpoints=https://10.31.90.201:2379 > --ca-file=/data/kubernetes/ssl/ca.pem > --cert-file=/data/kubernetes/ssl/etcd.pem > --key-file=/data/kubernetes/ssl/etcd-key.pem cluster-health
member 6d88194636f8d570 is healthy: got healthy result from https://10.31.90.202:2379
member ad9448fdb3b3cd26 is healthy: got healthy result from https://10.31.90.203:2379
member fb7fb38e5e81969b is healthy: got healthy result from https://10.31.90.201:2379
cluster is healthy
后续会陆续更新所有的安装文档,如果你觉得我写的不错,希望大家多多关注点赞,非常感谢!
原文地址:http://blog.51cto.com/billy98/2334706
时间: 2024-10-12 00:24:26