etcd证书配置

 

ETCD证书

证书类型介绍

client certificate 用于通过服务器验证客户端。例如etcdctl，etcd proxy，fleetctl或docker客户端。
server certificate 由服务器使用，并由客户端验证服务器身份。例如docker服务器或kube-apiserver。
peer certificate 由 etcd 集群成员使用，供它们彼此之间通信使用。

下载 cfssl:

[root@localhost etcd]# wget  https://pkg.cfssl.org/R1.2/cfssl_linux-amd64

[root@localhost etcd]# mv cfssl_linux-amd64 /usr/bin/cfssl

下载 cfssljson：

[root@localhost etcd]# wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
[root@localhost etcd]# mv cfssljson_linux-amd64 /usr/bin/cfssljson　

添加可执行权限：

[root@localhost etcd]# chmod +x /usr/bin/{cfssl,cfssljson}

配置CA选项：

mkdir etcd-ca-gen
cd etcd-ca-gen
cat > ca-config.json << EOF
{
    "signing": {
        "default": {
            "expiry": "43800h"
        },
        "profiles": {
            "server": {
                "expiry": "43800h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth"
                ]
            },
            "client": {
                "expiry": "43800h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "client auth"
                ]
            },
            "peer": {
                "expiry": "43800h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth",
                    "client auth"
                ]
            }
        }
    }
}
EOF
cat > ca-csr.json <<EOF
{
    "CN": "WAE Etcd CA",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "FJ",
            "ST": "Xia Men"
        }
    ]
}
EOF

　　

生成CA证书：

cfssl gencert -initca ca-csr.json | cfssljson -bare ca -#将会生成以下几个文件：
ca-key.pem
ca.csr
ca.pem

　　

生成服务器端证书：

cat > server.json <<EOF
{
    "CN": "WAE Etcd Server",
    "hosts": [
        "127.0.0.1",
        "etcd1-com-hakim.com",
        "etcd2-com-hakim.com",
        "etcd3-com-hakim.com",
        "etcd4-com-hakim.com",
        "etcd5-com-hakim.com"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "FJ",
            "ST": "Xia Men"
        }
    ]
}
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server server.json | cfssljson -bare server

　　

生成对等证书：

cp server.json member.json
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer member.json | cfssljson -bare member

　　

生成客户端证书：

cat > client.json <<EOF
{
    "CN": "client",
    "hosts": [""],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "L": "FJ",
            "ST": "Xia Men"
        }
    ]
}
EOF
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client.json | cfssljson -bare client

　　

将所有pem文件复制到/etc/etcd/etcd-ca/目录下：

mkdir /etc/etcd/etcd-ca/
cp *.pem /etc/etcd/etcd-ca/

　　

配置Etcd

vim /etc/etcd/etcd.conf
# [member]
ETCD_NAME=etcd1
ETCD_DATA_DIR="/var/lib/etcd/data"
ETCD_LISTEN_PEER_URLS="https://0.0.0.0:2380"
ETCD_LISTEN_CLIENT_URLS="https://0.0.0.0:2379"
#[cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://etcd1-com-hakim.com:2380"
ETCD_INITIAL_CLUSTER="etcd1=https://etcd1-com-hakim.com:2380,etcd2=https://etcd2-com-hakim.com:2380,etcd3=https://etcd3-com-hakim.com:2380,etcd4=https://etcd4-com-hakim.com:2380,etcd5=https://etcd5-com-hakim.com:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="https://etcd1-com-hakim.com:2379"
#[security]
ETCD_CERT_FILE="/etc/etcd/etcd-ca/server.pem"
ETCD_KEY_FILE="/etc/etcd/etcd-ca/server-key.pem"
ETCD_CLIENT_CERT_AUTH="true"
ETCD_TRUSTED_CA_FILE="/etc/etcd/etcd-ca/ca.pem"
ETCD_AUTO_TLS="true"
ETCD_PEER_CERT_FILE="/etc/etcd/etcd-ca/member.pem"
ETCD_PEER_KEY_FILE="/etc/etcd/etcd-ca/member-key.pem"
ETCD_PEER_CLIENT_CERT_AUTH="true"
ETCD_PEER_TRUSTED_CA_FILE="/etc/etcd/etcd-ca/ca.pem"
ETCD_PEER_AUTO_TLS="true"

　　

增加etcdctl环境变量

cat > /etc/profile.d/etcd.sh <<EOF
export ETCDCTL_CA_FILE=/etc/etcd/etcd-ca/ca.pem
export ETCDCTL_KEY_FILE=/etc/etcd/etcd-ca/client-key.pem
export ETCDCTL_CERT_FILE=/etc/etcd/etcd-ca/client.pem/EOF
EOF
. /etc/profile.d/etcd.sh

　　

测试etcd是否正常

etcdctl member list
etcdctl cluster-health