linux--12week | 易学教程

1、配置chrony服务，实现服务器时间自动同步
-->下载chrony服务器：
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更改下时间：

-->配置并启动：

重新启动服务：

cilent端：
-->下载chrony服务：
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更改配置并重启服务：

地址指向时钟服务器：

重启服务后时间：

2、实现cobbler+pxe自动化装机：
-->pxe自动化安装centos7:
1-安装httpd tftp-server dhcp syslinu system-config-kickstart tree
2-搭建本地yum源，并启动各项服务；
mkdir -p /var/www/html/centos/7/os/x86_64
mount /dev/sr0 /var/www/html/centos/7/os/x86_64
mkdir -p /var/www/html/ksdir/
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3-配置DHCP服务器；
cp /usr/share/doc/dhcp-4.2.5/dhcpd.conf.example /etc/dhcp/dhcpd.conf --复制配置文件
更改DHCP相对应的文件：
subnet 192.168.10.0 netmask 255.255.255.0 {
28 range 192.168.10.100 192.168.10.254;
29 option routers 192.168.10.1；
30 filename "pxelinux.0"; --启动的bootloader,rpm包syslinux
31 next-server 192.168.10.12; --本地安装源系统的地址
32 }
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重启DHCPD
4-配置tftp-server文件：进行pxe安装 ;
mkdir -p /var/lib/tftpboot/pxelinux.cfg
cp /var/www/html/centos/7/os/x86_64/isolinux/vmlinuz /var/lib/tftpboot/
cp /var/www/html/centos/7/os/x86_64/isolinux/initrd.img .
cp /var/www/html/centos/7/os/x86_64/isolinux/isolinux.cfg /var/lib/tftpboot/pxelinux.cfg/default --启动菜单文件
cp /usr/share/syslinux/menu.c32 . --菜单引导文件
cp /usr/share/syslinux/pxelinux.0 . --引导的bootloader
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5-配置系统应答文件，kickstart

6-配置系统引导菜单：
default menu.c32
timeout 600
menu title CentOS 7
label linux
menu label ^PXE Install CentOS 7
kernel vmlinuz
append initrd=initrd.img ks=http://192.168.10.12/ksdir/test.cfg
label yumbase
menu label Test this ^media & install CentOS 7
kernel vmlinuz
append initrd=initrd.img inst.repo=http://192.168.10.12/centos/7/os/x86_64/
label local
menu default
menu label Boot from ^local drive
localboot 0xffff
6-开机去掉相对应的挂载CD，保证在同一局域网，开始自动安装;
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-->实现cobbler自动安装centos7；
1-yum install cobbler dhcp tree--安装相关的软件
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2-mount /dev/sr0 /mnt/ --挂载光盘
3-systemctl start httpd tftp.socket cobblerd --启动相关的服务
4-cobbler check --检查配置项

5-更改：/etc/cobbler/settings 文件：
    vim /etc/cobbler/settings
    default_password_crypted: "$1$RFO.hOYF$g79MJdrxFJMgpggQlhjev/"    #openssl passwd -1   --生成md5登录密码；
        ！[](https://s4.51cto.com/images/blog/202004/17/2d88b0066e6b50a85a21815c5a49d27c.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)

    next_server: 192.168.37.17 --tftp服务器地址
    manage_dhcp: 1      --dhcp服务器
    server: 192.168.37.17  --cobbler服务器地址
6-更改DHCP服务器配置：vim /etc/cobbler/dhcp.template  
    subnet 192.168.10.0 netmask 255.255.255.0 {
      option routers             192.168.10.2;
      option domain-name-servers 180.76.76.76;
      option subnet-mask         255.255.255.0;
      range dynamic-bootp        192.168.10.100 192.168.10.254;}

        ![](https://s4.51cto.com/images/blog/202004/17/5f14e355e91b363a499bf9e02f514ac8.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)

    下载boorloader：cobbler get-loaders
7-重启服务：mkdir -p /usr/share/cobbler/web/cobbler.wsgi --创建该文件
            systemctl restart cobblerd   
            cobbler sync
            systemctl start dhcpd 
            ![](https://s4.51cto.com/images/blog/202004/17/f76739cbb3e544857dbe64889d3b67f7.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)
8-导入cobbler的yum源；
    cobbler import distro --path=/mnt --name=centos-7-x86_64 --arch=x86_64
        导入文件会在：/var/www/cobbler下
    cobbler distro list  --查看是否导入
    ![](https://s4.51cto.com/images/blog/202004/17/23605579ea8fecddd06072cbc58a827a.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)
9-生成ks文件：
    cp ks7_mini.cfg /var/lib/cobbler/kickstarts/ --复制文件到配置目录
    cobbler profile add --name=centos-7-x86_64_mini --distro=centos-7-x86_64 --kickstart=/var/lib/cobbler/kickstarts/ks7_mini.cfg --生成相关的ks文件
    ![](https://s4.51cto.com/images/blog/202004/17/1e3536577e1b07af2e0ae4e59d200175.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)
    cobbler profile list --查看生成的KS目录
    cobbler profile remove --name=centos-7-x86_64  --删除多余的KS目录
10-更改开机默认属性：vim /etc/cobbler/pxe/pxedefault.template
     1 DEFAULT menu
          2 PROMPT 0
          3 MENU TITLE Cobbler | http://cobbler.github.io/
          4 TIMEOUT 200
          5 TOTALTIMEOUT 1000 --等待时间为十秒
          6 ONTIMEOUT $pxe_timeout_profile
          7 
          8 LABEL local
          9         MENU LABEL (local)
         10         LOCALBOOT  
         12 $pxe_menu_items
         13         MENU DEFAULT  --更改默认安装系统为自定系统
         14 
         15 MENU end
         ![] (https://s4.51cto.com/images/blog/202004/17/b66ea6bbb413c1f775b59835bc195a09.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_90,type_ZmFuZ3poZW5naGVpdGk=)

    重启所有服务，并同步数据：cobbler sync
        systemctl restart httpd tftp.socket cobblerd dhcpd
        cobbler sync
11-开机安装：

来源：oschina

链接：https://my.oschina.net/u/4324861/blog/3274289

标签

CentOS

cobbler