k8s之etcd集群安装(五)
集群规划
主机名 角色 ip
HDss7-12.host.com ectc lead 192.168.12.12
HDss7-21.host.com ectc follow 192.168.12.21
HDss7-22.host.com ectc follow 192.168.12.22
1. hdss7-200创建etcd证书
[root@hdss7-200 ~]# cat /opt/certs/ca-config.json
{
"signing": {
"default": {
"expiry": "175200h"
},
"profiles": {
"server": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"server auth"
]
},
"client": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"client auth"
]
},
"peer": {
"expiry": "175200h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
[root@hdss7-200 ~]# cat /opt/certs/etcd-peer-csr.json
{
"CN": "k8s-etcd",
"hosts": [
"192.168.12.11",
"192.168.12.12",
"192.168.12.21",
"192.168.12.22"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "beijing",
"L": "beijing",
"O": "od",
"OU": "ops"
}
]
}
[root@hdss7-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json |cfssl-json -bare etcd-peer
[root@hdss7-200 certs]# ll
total 36
-rw-r--r-- 1 root root 840 Jun 6 13:03 ca-config.json
-rw-r--r-- 1 root root 989 Jun 6 11:19 ca.csr
-rw-r--r-- 1 root root 334 Jun 6 11:18 ca-csr.json
-rw------- 1 root root 1679 Jun 6 11:19 ca-key.pem
-rw-r--r-- 1 root root 1334 Jun 6 11:19 ca.pem
-rw-r--r-- 1 root root 1062 Jun 6 13:04 etcd-peer.csr
-rw-r--r-- 1 root root 379 Jun 6 13:04 etcd-peer-csr.json
-rw------- 1 root root 1679 Jun 6 13:04 etcd-peer-key.pem
-rw-r--r-- 1 root root 1424 Jun 6 13:04 etcd-peer.pem
2.hdss7-12安装etcd
[root@hdss7-12 ~]# useradd -s /sbin/nologin -M etcd
[root@hdss7-12 ~]# mkdir -p /opt/src
[root@hdss7-12 ~]# cd /opt/src
[root@hdss7-12 src]# ll
total 9620
-rw-r--r-- 1 root root 9850227 Apr 1 18:44 etcd-v3.1.20-linux-amd64.tar.gz
[root@hdss7-12 src]# tar xf etcd-v3.1.20-linux-amd64.tar.gz -C /opt/
[root@hdss7-12 src]# cd ..
[root@hdss7-12 opt]# mv etcd-v3.1.20-linux-amd64/ etcd-v3.1.20
[root@hdss7-12 opt]# ls
etcd-v3.1.20 src
[root@hdss7-12 opt]# ll
total 0
drwxr-xr-x 3 478493 89939 123 Oct 11 2018 etcd-v3.1.20
drwxr-xr-x 2 root root 45 Jun 6 13:08 src
[root@hdss7-12 opt]# ln -s /opt/etcd-v3.1.20/ /opt/etcd
创建目录，拷贝证书、私钥
[root@hdss7-12 opt]# mkdir -p /opt/etcd/certs /data/etcd /data/logs/etcd-server
[root@hdss7-12 opt]# cd /opt/etcd/certs/
将运维主机上生成的ca.pem etc-peer-key.pem etc-peer.pem 拷贝到/opt/etcd/certs目录中，私钥文件权限为600
[root@hdss7-12 certs]# scp hdss7-200:/opt/certs/ca.pem .
[root@hdss7-12 certs]# scp hdss7-200:/opt/certs/etcd-peer-key.pem .
[root@hdss7-12 certs]# scp hdss7-200:/opt/certs/etcd-peer.pem .
[root@hdss7-12 certs]# chown -R etcd.etcd /opt/etcd/certs /data/etcd /data/logs/etcd-server
[root@hdss7-12 certs]# ll
total 12
-rw-r--r-- 1 etcd etcd 1334 Jun 6 13:10 ca.pem
-rw------- 1 etcd etcd 1679 Jun 6 13:10 etcd-peer-key.pem
-rw-r--r-- 1 etcd etcd 1424 Jun 6 13:10 etcd-peer.pem
[root@hdss7-12 certs]#
创建etcd服务启动脚本IP地址改成本机IP -- 此文件本目录中有，上传修改即可，不要粘贴复制,格式容易出错
[root@hdss7-12 certs]# cat /opt/etcd/etcd-server-startup.sh
#!/bin/sh
./etcd --name etcd-server-7-12 \
--data-dir /data/etcd/etcd-server \
--listen-peer-urls https://192.168.12.12:2380 \
--listen-client-urls https://192.168.12.12:2379,http://127.0.0.1:2379 \
--quota-backend-bytes 8000000000 \
--initial-advertise-peer-urls https://192.168.12.12:2380 \
--advertise-client-urls https://192.168.12.12:2379,http://127.0.0.1:2379 \
--initial-cluster etcd-server-7-12=https://192.168.12.12:2380,etcd-server-7-21=https://192.168.12.21:2380,etcd-server-7-22=https://192.168.12.22:2380 \
--ca-file ./certs/ca.pem \
--cert-file ./certs/etcd-peer.pem \
--key-file ./certs/etcd-peer-key.pem \
--client-cert-auth \
--trusted-ca-file ./certs/ca.pem \
--peer-ca-file ./certs/ca.pem \
--peer-cert-file ./certs/etcd-peer.pem \
--peer-key-file ./certs/etcd-peer-key.pem \
--peer-client-cert-auth \
--peer-trusted-ca-file ./certs/ca.pem \
--log-output stdout
[root@hdss7-12 certs]# chmod +x /opt/etcd/etcd-server-startup.sh
[root@hdss7-12 certs]# chown -R etcd.etcd /opt/etcd-v3.1.20/ /data/etcd /data/logs/etcd-server
[root@hdss7-12 certs]# yum install supervisor -y
[root@hdss7-12 certs]# systemctl start supervisord
更改supervisord的配置文件：[program:etcd-server-7-12]名字需要根据实际更改
[root@hdss7-12 certs]# cat /etc/supervisord.d/etcd-server.ini
[program:etcd-server-7-12]
command=/opt/etcd/etcd-server-startup.sh ; the program (relative uses PATH, can take args)
numprocs=1 ; number of processes copies to start (def 1)
directory=/opt/etcd ; directory to cwd to before exec (def no cwd)
autostart=true ; start at supervisord start (default: true)
autorestart=true ; retstart at unexpected quit (default: true)
startsecs=30 ; number of secs prog must stay running (def. 1)
startretries=3 ; max # of serial start failures (default 3)
exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT ; signal used to kill process (default TERM)
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=etcd ; setuid to this UNIX account to run the program
redirect_stderr=true ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/etcd-server/etcd.stdout.log ; stdout log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false ; emit events on stdout writes (default false)
[root@hdss7-12 certs]# supervisorctl update
etcd-server-7-12: added process group
[root@hdss7-12 certs]# supervisorctl status