准备一台centos6的机器
yum install epel-release -y
yum install tftp-server dhcp syslinux nginx -y
vim /etc/dhcp/dhcpd.conf
*************************************************
allow booting;
allow bootp;
ddns-update-style interim;
ignore client-updates;
subnet 192.168.33.0 netmask 255.255.255.0 {
option subnet-mask 255.255.255.0;
option broadcast-address 192.168.33.255;
range dynamic-bootp 192.168.33.200 192.168.33.240;
next-server 192.168.33.50;
filename "pxelinux.0";
}
*************************************************
centos6本机ip为192.168.33.50
dhcp ip范围为192.168.33.200-192.168.33.240
cd /var/lib/tftpboot
cp /usr/share/syslinux/pxelinux.0 .
wget https://stable.release.core-os.net/amd64-usr/current/coreos_production_pxe.vmlinuz
wget https://stable.release.core-os.net/amd64-usr/current/coreos_production_pxe_image.cpio.gz
采用的是stable分支,目前版本是1353.7.0
cd /var/lib/tftpboot
mkdir pxelinux.cfg
vim pxelinux.cfg/default
*************************************************
default coreos
prompt 1
timeout 15
display boot.msg
label coreos
menu default
kernel coreos_production_pxe.vmlinuz
initrd coreos_production_pxe_image.cpio.gz
append coreos.first_boot=1 coreos.config.url=http://192.168.33.50/pxe.ign
*************************************************
coreos.config.url配置项里的文件是ignition文件,后面会提到
vim /usr/share/nginx/html/pxe.ign
*************************************************
{
"ignition": {
"version": "2.0.0",
"config": {}
},
"storage": {},
"systemd": {},
"networkd": {},
"passwd": {
"users": [
{
"name": "core",
"sshAuthorizedKeys": [
"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGdByTgSVHq..."
]
}
]
}
}
*************************************************
配置了core用户的ssh认证,其中key信息请提供ssh公钥内容
service dhcpd start
service xinetd start
chkconfig tftp on
service nginx start
接下来就可以从pxe启动机器了,启动完毕就会是coreos的登陆界面
我们可以使用ssh core@ip连接coreos进行操作了