kubernetes 集群安装etcd集群,带证书

install etcd

  1. 准备证书
    https://www.kubernetes.org.cn/3096.html

在master1需要安装CFSSL工具,这将会用来建立 TLS certificates。

export CFSSL_URL="https://pkg.cfssl.org/R1.2"
wget "${CFSSL_URL}/cfssl_linux-amd64" -O /usr/local/bin/cfssl
wget "${CFSSL_URL}/cfssljson_linux-amd64" -O /usr/local/bin/cfssljson
chmod +x /usr/local/bin/cfssl /usr/local/bin/cfssljson

创建集群 CA 与 Certificates
在这部分,将会需要产生 client 与 server 的各组件 certificates,并且替 Kubernetes admin user 产生 client 证书。

建立/etc/etcd/ssl文件夹,然后进入目录完成以下操作。

 mkdir -p /etc/etcd/ssl && cd /etc/etcd/ssl
 export PKI_URL="https://kairen.github.io/files/manual-v1.8/pki"

下载ca-config.json与etcd-ca-csr.json文件,并产生 CA 密钥:

wget "${PKI_URL}/ca-config.json" "${PKI_URL}/etcd-ca-csr.json"
cfssl gencert -initca etcd-ca-csr.json | cfssljson -bare etcd-ca
ls etcd-ca*.pem
etcd-ca-key.pem  etcd-ca.pem

下载etcd-csr.json文件,并产生 kube-apiserver certificate 证书:

wget "${PKI_URL}/etcd-csr.json"   #修改IP为本地,如果是集群,每个节点IP都要添加进去
cfssl gencert \
  -ca=etcd-ca.pem \
  -ca-key=etcd-ca-key.pem \
  -config=ca-config.json \
  -profile=kubernetes \
  etcd-csr.json | cfssljson -bare etcd

ls etcd*.pem
etcd-ca-key.pem  etcd-ca.pem  etcd-key.pem  etcd.pe

若节点 IP 不同,需要修改etcd-csr.json的hosts。

完成后删除不必要文件: rm -rf *.json

确认/etc/etcd/ssl有以下文件:

ls /etc/etcd/ssl
etcd-ca.csr  etcd-ca-key.pem  etcd-ca.pem  etcd.csr  etcd-key.pem  etcd.pem
  1. Etcd 安装与设定
    首先在master1节点下载 Etcd,并解压缩放到 /opt 底下与安装:
export ETCD_URL="https://github.com/coreos/etcd/releases/download"
cd && wget -qO- --show-progress "${ETCD_URL}/v3.2.9/etcd-v3.2.9-linux-amd64.tar.gz" | tar -zx
mv etcd-v3.2.9-linux-amd64/etcd* /usr/local/bin/ && rm -rf etcd-v3.2.9-linux-amd64

完成后新建 Etcd Group 与 User,并建立 Etcd 配置文件目录:

groupadd etcd && useradd -c "Etcd user" -g etcd -s /sbin/nologin -r etcd

下载etcd相关文件,我们将来管理 Etcd:

export ETCD_CONF_URL="https://kairen.github.io/files/manual-v1.8/master"
wget "${ETCD_CONF_URL}/etcd.conf" -O /etc/etcd/etcd.conf
wget "${ETCD_CONF_URL}/etcd.service" -O /lib/systemd/system/etcd.service

编辑/etc/etcd/etcd.conf
把IP改成本地IP,0.0.0.0的不要改。
如果是etcd集群,ETCD_INITIAL_CLUSTER="master1=https://192.168.1.144:2380,node1=https://192.168.1.145:2380,node2=https://192.168.1.146:2380"
master1,node1,node2与ETCD_NAME参数匹配。

建立 var 存放信息,然后启动 Etcd 服务:

mkdir -p /var/lib/etcd && chown etcd:etcd -R /var/lib/etcd /etc/etcd
  1. node1,node2 etcd安装(如果单点etcd跳过此步)
    从master1 copy配置文件
mkdir -p /etc/etcd/ssl && cd /etc/etcd/ssl
scp  192.168.1.144:/etc/etcd/ssl/* .
scp  192.168.1.144:/usr/local/bin/etcd* /usr/local/bin/
groupadd etcd && useradd -c "Etcd user" -g etcd -s /sbin/nologin -r etcd
scp  192.168.1.144:/etc/etcd/etcd.conf /etc/etcd/etcd.conf
scp  192.168.1.144:/lib/systemd/system/etcd.service /lib/systemd/system/etcd.service
mkdir -p /var/lib/etcd && chown etcd:etcd -R /var/lib/etcd /etc/etcd

vim /etc/etcd/etcd.conf
ETCD_NAME改为node1 node2, 及修改IP

  1. 启动etcd
    systemctl enable etcd.service && systemctl start etcd.service
    如为集群,则都要启动
    验证,集群内节点注意时间要同步
 export CA="/etc/etcd/ssl"
 ETCDCTL_API=3 etcdctl  --cacert=${CA}/etcd-ca.pem \
    --cert=${CA}/etcd.pem  --key=${CA}/etcd-key.pem \
    --endpoints="https://192.168.1.144:2379" \
    endpoint health
 ETCDCTL_API=3 etcdctl  --cacert=${CA}/etcd-ca.pem \
    --cert=${CA}/etcd.pem  --key=${CA}/etcd-key.pem \
    --endpoints="https://192.168.1.144:2379" \
    member list

 

posted @ 2018-09-29 18:49  大数据从业者FelixZh  阅读(694)  评论(0编辑  收藏  举报