kubernetes 1.8 安装脚本之ETCD

本次使用环境為：CentOs 7.3

Etcd v3.2.9

IP	组件
192.168.2.11	etcd1
192.168.2.12	etcd1
192.168.2.13	etcd1
192.168.2.1	宿主机

每个虚拟机已经提前安装好了etcd
脚步在宿主机上运行，宿主机需要无密ssh各服务器。宿主机需要安装cfssl
kubernetes 1.8 安装脚本一共有3个脚本，每个脚本需要放在对应名字的文件夹下。3个文件夹需要在同一父目录之下，因为后面的脚本需要使用前面脚本生成的*.pem

wget https://raw.githubusercontent.com/bravem/bravem.github.com/master/k8sinstall/etcd/etcd.sh[/code] 
#!/bin/bash
#********************************************************************
#Author:    bravewang
#QQ:        6142553
#blog       http://brave666.blog.51cto.com/ #Date:      2017-11-14
#********************************************************************
export host1=192.168.2.11
export host2=192.168.2.12
export host3=192.168.2.13
export zhuji="$host1 $host2 $host3"

cat << EOF > etcd-csr.json
{
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"O": "etcd",
"OU": "etcd Security",
"L": "Beijing",
"ST": "Beijing",
"C": "CN"
}
],
"CN": "etcd",
"hosts": [
"127.0.0.1",
"localhost",
"$host1",
"$host2",
"$host3",
"$host4",
"$host5"
]
}
EOF

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

cat << EOF > etcd-root-ca-csr.json
{
"key": {
"algo": "rsa",
"size": 4096
},
"names": [
{
"O": "etcd",
"OU": "etcd Security",
"L": "Beijing",
"ST": "Beijing",
"C": "CN"
}
],
"CN": "etcd-root-ca"
}
EOF

cfssl gencert --initca=true etcd-root-ca-csr.json | cfssljson --bare etcd-root-ca
cfssl gencert --ca etcd-root-ca.pem --ca-key etcd-root-ca-key.pem --config etcd-gencert.json etcd-csr.json | cfssljson --bare etcd

#for IP in $zhuji ; do
#   scp etcd-3.2.7-1.fc28.x86_64.rpm root@$IP:~
#   ssh root@$IP rpm -ivh etcd-3.2.7-1.fc28.x86_64.rpm
#done
for IP in $zhuji ;do
ssh root@$IP mkdir /etc/etcd/ssl -p
scp *.pem root@$IP:/etc/etcd/ssl
ssh root@$IP chown -R etcd:etcd /etc/etcd/ssl
ssh root@$IP chmod -R 644 /etc/etcd/ssl/*
ssh root@$IP chmod 755 /etc/etcd/ssl
ssh root@$IP chown -R etcd:etcd /var/lib/etcd
done

conf()
{
cat << EOF > etcd${IP##*.}.conf
# [member]
ETCD_NAME=etcd${IP: -1}
ETCD_DATA_DIR="/var/lib/etcd/etcd.etcd"
ETCD_WAL_DIR="/var/lib/etcd/wal"
ETCD_SNAPSHOT_COUNT="100"
ETCD_HEARTBEAT_INTERVAL="100"
ETCD_ELECTION_TIMEOUT="1000"
ETCD_LISTEN_PEER_URLS="https://$IP:2380"
ETCD_LISTEN_CLIENT_URLS="https://$IP:2379,http://127.0.0.1:2379"
ETCD_MAX_SNAPSHOTS="5"
ETCD_MAX_WALS="5"
#ETCD_CORS=""

# [cluster]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://$IP:2380"
# if you use different ETCD_NAME (e.g. test), set ETCD_INITIAL_CLUSTER value for this name, i.e. "test=http://..."
ETCD_INITIAL_CLUSTER="etcd1=https://$host1:2380,etcd2=https://$host2:2380,etcd3=https://$host3:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_ADVERTISE_CLIENT_URLS="https://$IP:2379"
#ETCD_DISCOVERY=""
#ETCD_DISCOVERY_SRV=""
#ETCD_DISCOVERY_FALLBACK="proxy"
#ETCD_DISCOVERY_PROXY=""
#ETCD_STRICT_RECONFIG_CHECK="false"
#ETCD_AUTO_COMPACTION_RETENTION="0"

# [proxy]
#ETCD_PROXY="off"
#ETCD_PROXY_FAILURE_WAIT="5000"
#ETCD_PROXY_REFRESH_INTERVAL="30000"
#ETCD_PROXY_DIAL_TIMEOUT="1000"
#ETCD_PROXY_WRITE_TIMEOUT="5000"
#ETCD_PROXY_READ_TIMEOUT="0"

# [security]
ETCD_CERT_FILE="/etc/etcd/ssl/etcd.pem"
ETCD_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
ETCD_CLIENT_CERT_AUTH="true"
ETCD_TRUSTED_CA_FILE="/etc/etcd/ssl/etcd-root-ca.pem"
ETCD_AUTO_TLS="true"
ETCD_PEER_CERT_FILE="/etc/etcd/ssl/etcd.pem"
ETCD_PEER_KEY_FILE="/etc/etcd/ssl/etcd-key.pem"
ETCD_PEER_CLIENT_CERT_AUTH="true"
ETCD_PEER_TRUSTED_CA_FILE="/etc/etcd/ssl/etcd-root-ca.pem"
ETCD_PEER_AUTO_TLS="true"

# [logging]
#ETCD_DEBUG="false"
# examples for -log-package-levels etcdserver=WARNING,security=DEBUG
#ETCD_LOG_PACKAGE_LEVELS=""
EOF
}

for IP in $zhuji; do
ssh root@$IP hostnamectl set-hostname docker${IP##*.}
conf
scp etcd${IP##*.}.conf root@$IP:/etc/etcd/etcd.conf
ssh root@$IP systemctl daemon-reload
sleep 1
ssh root@$IP systemctl restart etcd
sleep 2
ssh root@$IP systemctl enable etcd
done
测试
export ETCDCTL_API=3
etcdctl --cacert=/etc/etcd/ssl/etcd-root-ca.pem --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --endpoints=https://192.168.2.11:2379,https://192.168.2.12:2379,https://192.168.2.13:2379 endpoint health

[root@localhost ~]# export ETCDCTL_API=3
[root@localhost ~]# etcdctl --cacert=/etc/etcd/ssl/etcd-root-ca.pem --cert=/etc/etcd/ssl/etcd.pem --key=/etc/etcd/ssl/etcd-key.pem --endpoints=https://192.168.2.11:2379,https://192.168.2.12:2379,https://192.168.2.13:2379 endpoint health https://192.168.2.13:2379 is healthy: successfully committed proposal: took = 7.411904ms https://192.168.2.11:2379 is healthy: successfully committed proposal: took = 2.796868ms https://192.168.2.12:2379 is healthy: successfully committed proposal: took = 2.456265ms