1. cfssl安装
# curl -L https://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssl_1.4.1_linux_amd64-o /usr/local/bin/cfssl
# curl -Lhttps://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssljson_1.4.1_linux_amd64-o /usr/local/bin/cfssljson
# curl -L https://github.com/cloudflare/cfssl/releases/download/v1.4.1/cfssl-certinfo_1.4.1_linux_amd64-o /usr/local/bin/cfssl-certinfo
# chmod +x /usr/local/bin/cfssl*
# ll /usr/local/bin/cfssl*
-rwxr-xr-x 1 root root 14842064 Nov 1717:55 /usr/local/bin/cfssl
-rwxr-xr-x 1 root root 11758832 Nov 1717:57 /usr/local/bin/cfssl-certinfo
-rwxr-xr-x 1 root root 9495504 Nov 17 17:56 /usr/local/bin/cfssljson
2. CA脚本
# cat generate_etcd_cert.sh
cfssl gencert -initca ca-csr.json |cfssljson -bare ca -
cfssl gencert -ca=ca.pem-ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json |cfssljson -bare server
3. 编写生成CA需要的脚本
# cat ca-config.json
{
"signing": {
"default": {
"expiry":"87600h"
},
"profiles": {
"www": {
"expiry":"87600h",
"usages": [
"signing",
"keyencipherment",
"server auth",
"client auth"
]
}
}
}
}
# cat ca-csr.json
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
4. 生成CA证书《此处是把CA证书中的命令分开执行的，没有直接执行ca脚本》
# cfssl gencert -initca ca-csr.json |cfssljson -bare ca -
2019/11/17 18:50:27 [INFO] generating anew CA key and certificate from CSR
2019/11/17 18:50:27 [INFO] generatereceived request
2019/11/17 18:50:27 [INFO] received CSR
2019/11/17 18:50:27 [INFO] generatingkey: rsa-2048
2019/11/17 18:50:28 [INFO] encoded CSR
2019/11/17 18:50:28 [INFO] signedcertificate with serial number 209194507194439129246775083370743915368585954788
# ls *.pem
ca-key.pem ca.pem
5. 配置节点文件，用于生成节点证书
# cat server-csr.json
{
"CN": "etcd",
"hosts": [
"192.168.1.106",
"192.168.1.109".
"192.168.1.110"
],
"key": {
"algo": "rsa",
"size": 2048
} ,
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
# 生成证书 脚本的第二行
# cfssl gencert -ca=ca.pem-ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json |cfssljson -bare server
2019/11/17 18:59:14 [INFO] generatereceived request
2019/11/17 18:59:14 [INFO] received CSR
2019/11/17 18:59:14 [INFO] generatingkey: rsa-2048
2019/11/17 18:59:15 [INFO] encoded CSR
2019/11/17 18:59:15 [INFO] signedcertificate with serial number 719085529521326494499438956936026113382590658665
[root@k8s-master1 etcd]# ls server*
server.csr server-csr.json server-key.pem server.pem
#注释
Server.pem 相当于cert
6. 集群部署
服务器：192.168.1.106,192.168.1.109,192.168.1.110
# 192.168.1.106上操作
# 下载
# wgethttps://github.com/etcd-io/etcd/releases/download/v3.2.28/etcd-v3.2.28-linux-amd64.tar.gz
# 解压并查看目录
# tar -zxf etcd-v3.2.28-linux-amd64.tar.gz && mvetcd-v3.2.28-linux-amd64 /opt/etcd
# ls etcd-v3.2.28-linux-amd64
Documentation etcd etcdctl README-etcdctl.md README.md READMEv2-etcdctl.md
# 整理目录
# mkdir /opt/etcd/{bin,cfg}
# mv /opt/etcd/etcd /opt/etcd/bin/etcd
# mv /opt/etcd/etcdctl /opt/etcd/bin/etcdctl
# 编写etcd配置文件
# cat /opt/etcd/cfg/etcd.conf
#[Member]
ETCD_NAME="etcd-1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.1.106:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.1.106:2379,http://127.0.0.1:2379"
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.1.106:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.1.106:2379"
ETCD_INITIAL_CLUSTER="etcd-1=https://192.168.1.106:2380,etcd-2=https://192.168.1.109:2380,etcd-3=https://192.168.1.110:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
# 编写开机启动文件
# cat /opt/etcd/etcd.service
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
EnvironmentFile=/opt/etcd/cfg/etcd.conf
ExecStart=/opt/etcd/bin/etcd \
--name=${ETCD_NAME} \
--data-dir=${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=${ETCD_INITIAL_CLUSTER_STATE} \
--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.pem
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
# 拷贝证书到ssl目录
# cp /opt/TLS/etcd/{ca,server,server-key}.pem /opt/etcd/ssl/
# 拷贝etcd目录到其他节点
# scp -r /opt/[email protected]:/opt
# scp -r /opt/[email protected]:/opt
# 三台etcd集群上操作
# ln -s /opt/etcd/etcd.service /usr/lib/systemd/system/etcd.service
# mkdir /var/lib/etcd
# systemctl daemon-reload
# systemctl start etcd
# systemctl enable etcd
#检查