etcd集群安装配置

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ETC集群配置
yum install etcd
安装
etcd每台安装步骤都一样，所以etcd2、etcd3都以etcd1步骤一样
安装只需一条命令即可：
yum -y install etcd

修改配置文件
ETCD_DATA_DIR=”/var/lib/etcd/etcd01″
ETCD_LISTEN_PEER_URLS=”http://192.168.15.1:2380″
ETCD_LISTEN_CLIENT_URLS=”http://127.0.0.1:2379,http://192.168.15.1:2379″
ETCD_NAME=”etcd01″
ETCD_INITIAL_ADVERTISE_PEER_URLS=”http://192.168.15.1:2380″
ETCD_ADVERTISE_CLIENT_URLS=”http://192.168.15.1:2379″
ETCD_INITIAL_CLUSTER=”etcd01=http://192.168.15.1:2380,etcd02=http://192.168.15.2:2380,etcd03=http://192.168.15.3:2380″
ETCD_INITIAL_CLUSTER_TOKEN=”etcd-cluster”
ETCD_INITIAL_CLUSTER_STATE=”new”

vi /usr/lib/systemd/system/etcd.service
新增

ExecStart=/bin/bash -c “GOMAXPROCS=$(nproc) /usr/bin/etcd –name=\”${ETCD_NAME}\” –data-dir=\”${ETCD_DATA_DIR}\” –listen-client-urls=\”${ETCD_LISTEN_CLIENT_URLS}\” –listen-peer-urls=\”${ETCD_LISTEN_PEER_URLS}\” –advertise-client-urls=\”${ETCD_ADVERTISE_CLIENT_URLS}\” –initial-cluster-token=\”${ETCD_INITIAL_CLUSTER_TOKEN}\” –initial-cluster=\”${ETCD_INITIAL_CLUSTER}\” –initial-cluster-state=\”${ETCD_INITIAL_CLUSTER_STATE}\”

修改data-dir文件夹权限
chmod –R 777 /var/lib/etcd

[root@master01 member]# etcdctl member list
5bb3134465862e70: name=etcd03 peerURLs=http://192.168.15.3:2380 clientURLs=http://192.168.15.3:2379 isLeader=false
7760d3410f15c71b: name=etcd02 peerURLs=http://192.168.15.2:2380 clientURLs=http://192.168.15.2:2379 isLeader=false
ca8d009d60a70df4: name=etcd01 peerURLs=http://192.168.15.1:2380 clientURLs=http://192.168.15.1:2379 isLeader=true

至此，etcd集群已配置完成。接下来可以对kubernetes集群apiserver配置文件进行修改，使其指向etcd集群
#修改master节点，apiserver配置文件
[root@master ~]# cat /etc/kubernetes/apiserver