CentOS Cobbler 是一种用于自动化 Linux 系统部署的工具,可以通过网络启动 (PXE) 的方式快速安装、重装物理服务器和虚拟机。以下是一些使用 CentOS Cobbler 的技巧:
sudo yum install cobbler cobbler-web httpd dhcp tftp-server pykickstart xinetd
sudo systemctl enable cobblerd
sudo systemctl start cobblerd
sudo systemctl enable httpd
sudo systemctl start httpd
sudo cobbler setup
/etc/dhcp/dhcpd.conf
文件,添加以下内容:subnet 192.168.1.0 netmask 255.255.255.0 {
range 192.168.1.100 192.168.1.200;
option routers 192.168.1.1;
option domain-name-servers 8.8.8.8, 8.8.4.4;
filename "pxelinux.0";
next-server 192.168.1.2;
}
将 192.168.1.0
替换为你的子网,192.168.1.1
替换为你的网关,192.168.1.2
替换为 Cobbler 服务器的 IP 地址。之后,重启 DHCP 服务以应用更改:sudo systemctl restart dhcpd
/etc/xinetd.d/tftp
文件,设置 server_args
参数:server_args -s /var/lib/tftpboot
重启 xinetd 服务以应用更改:sudo systemctl restart xinetd
/tmp/
目录下。运行以下命令将操作系统添加到 Cobbler:sudo cobbler import --path /tmp/ --name centos-7.3
sudo cobbler profile add --name centos-7.3 --kickstart /var/lib/cobbler/kickstarts/default.ks
sudo cobbler system add --name centos-7.3 --profile centos-7.3 --netboot-enabled true
sudo cobbler sync
sudo systemctl status cobblerd
cobbler check
tail -f /var/log/cobbler/cobblerd.log
dmesg | grep -i panic
journalctl -b -1
sudo systemctl stop firewalld && sudo systemctl disable firewalld
sed -i 's/selinux.*/selinuxdisabled/g' /etc/selinux/config
sysctl -w vm.dirty_ratio=50
sysctl -w vm.dirty_background_ratio=10
/etc/cobbler/dhcp.template
和 /etc/xinetd.d/tftp
文件,确保配置正确。sudo systemctl restart tftp && sudo systemctl enable tftp
top
、vmstat
、iostat
等来监控系统资源使用情况,及时发现并解决性能瓶颈。vm.dirty_ratio
和 vm.dirty_background_ratio
参数来优化文件系统缓存。sshd -o GSSAPIAuthentication no
logrotate -f /etc/logrotate.conf
sudo useradd newuser
sudo passwd newuser
sudo usermod -aG newgroup newuser
chmod 700 /path/to/directory
sudo chown newuser /path/to/file
sudo chgrp newgroup /path/to/file
通过这些技巧,可以更高效地使用 CentOS Cobbler 进行自动化 Linux 系统部署和管理。