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etcd-binary-setup.MD

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创建工作目录

mkdir -p /data/k8s-work
cd /data/k8s-work

下载 cfssl 工具

wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64

chmod +x cfssl*
mv cfssl_linux-amd64 /usr/local/bin/cfssl
mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
mv cfssl-certinfo_linux-amd64 /usr/local/bin/cfssl-certinfo

生成 ca 配置文件

cat > ca-csr.json <<"EOF"
{
"CN": "kubernetes",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "Shanghai",
"L": "Shanghai",
"O": "cncamp",
"OU": "cncamp"
}
],
"ca": {
"expiry": "87600h"
}
}
EOF

生成 ca 证书文件

cfssl gencert -initca ca-csr.json | cfssljson -bare ca

配置 ca 证书策略

cat > ca-config.json <<"EOF"
{
  "signing": {
      "default": {
          "expiry": "87600h"
        },
      "profiles": {
          "kubernetes": {
              "usages": [
                  "signing",
                  "key encipherment",
                  "server auth",
                  "client auth"
              ],
              "expiry": "87600h"
          }
      }
  }
}
EOF

配置 etcd 请求 csr 文件

cat > etcd-csr.json <<"EOF"
{
  "CN": "etcd",
  "hosts": [
    "127.0.0.1",
    "192.168.34.2"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [{
    "C": "CN",
    "ST": "Shanghai",
    "L": "Shanghai",
    "O": "cncamp",
    "OU": "cncamp"
  }]
}
EOF

生成证书

cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=kubernetes etcd-csr.json | cfssljson  -bare etcd
wget https://github.com/etcd-io/etcd/releases/download/v3.5.0/etcd-v3.5.0-linux-amd64.tar.gz
tar -xvf etcd-v3.5.0-linux-amd64.tar.gz
cp -p etcd-v3.5.0-linux-amd64/etcd* /usr/local/bin/

生成 etcd 配置文件

cat >  etcd.conf <<"EOF"
#[Member]
ETCD_NAME="etcd1"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://192.168.34.2:2380"
ETCD_LISTEN_CLIENT_URLS="https://192.168.34.2:2379,http://127.0.0.1:2379"

#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://192.168.34.2:2380"
ETCD_ADVERTISE_CLIENT_URLS="https://192.168.34.2:2379"
ETCD_INITIAL_CLUSTER="etcd1=https://192.168.34.2:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
EOF

Reference

https://www.jianshu.com/p/b02c428950df