一、环境准备

主网IP 私网IP 主机名 角色 VIP
10.203.178.125 192.168.10.2 node1 主 10.203.178.137,192.168.10.1
10.203.178.127 192.168.10.3 node2 备 -

二、安装配置dhcp

1、10.203.178.125 配置dhcp服务

a、dhcp服务软件安装

yum install -y dhcpd

b、修改配置文件

vim /etc/dhcp/dhcpd.conf

# cobbler slave dhcpd

ddns-update-style interim;

allow booting;

allow bootp;

ignore client-updates;

set vendorclass = option vendor-class-identifier;

option pxe-system-type code 93 = unsigned integer 16;

subnet 192.168.10.0 netmask 255.255.254.0 {

 option routers             192.168.10.1;

 option domain-name-servers 10.202.32.100;

 option subnet-mask         255.255.254.0;

 range dynamic-bootp        192.168.10.10 192.168.10.199;

 default-lease-time         7200;

 max-lease-time             14400;

 next-server                10.203.178.137;

 class "pxeclients" {

    match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";

    if option pxe-system-type = 00:02 {

            filename "ia64/elilo.efi";

    } else if option pxe-system-type = 00:06 {

            filename "grub/grub-x86.efi";

    } else if option pxe-system-type = 00:07 {

            filename "grub/grub-x86_64.efi";

    } else {

            filename "pxelinux.0";

    }

  }

}

c、启动dhcpd服务：

service dhcpd restart

service dhcpd status

2、10.203.178.127 配置dhcp服务

a、安装dhcp服务

同上

b、配置dhcp服务

同上，但修改下列行到另一个c类地址段

range dynamic-bootp 192.168.11.10 192.168.11.199;

c、启动dhcpd服务：

同上

三、安装配置cobbler

yum install -y cobbler

四、安装配置keepalived

1、10.203.178.125安装keepalived服务

a、软件安装

yum install -y keepalived

b、配置keepalived

vim /etc/keepalived/scripts/keepalived.conf

global_defs {

    router_id pribms.dev

}

vrrp_script chk_http1 {

    script "/etc/keepalived/scripts/check_healthy.sh"

    interval 2

}

vrrp_instance VI_1 {

    state BACKUP

    interface eth0

    virtual_router_id 137

    priority 100

    nopreempt

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass 1qaz@WSX

    }

    virtual_ipaddress {

        10.203.178.137

    }

    track_script {

        chk_http1

    }

    master_notify /etc/keepalived/scripts/restart_cobblerd.sh

}

vrrp_instance VI_2 {

    state BACKUP

    interface eth3

    virtual_router_id 101

    priority 100

    nopreempt

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass 2wsx#EDC

    }

    virtual_ipaddress {

        192.168.10.1

    }

}

c、创建 keepalived 健康检查脚本

vim /etc/keepalived/scripts/check_healthy.sh

#!/bin/bash

stop_keepalived() {

    service keepalived stop

    exit 1

}

nc -w 10 -z 127.0.0.1 80 || service httpd restart

nc -w 10 -z 127.0.0.1 8080 || /bin/bash /app/cloud-pri-bms/code/run_app.sh restart

sleep 2

nc -w 10 -z 127.0.0.1 80 || stop_keepalived

nc -w 10 -z 127.0.0.1 8080 || stop_keepalived

d、创建 keepalived 角色切换为主之后的触发脚本

vim /etc/keepalived/scripts/restart_cobblerd.sh

#!/bin/bash

#Auther: Harry

#Date: 2019-09-12

/etc/init.d/cobblerd restart

/usr/bin/cobbler sync

e、启动keepalived并设置开机启动

# 启动服务

service keepalived start

ip a

# 打开开机自启动并验证：

chkconfig keepalived on

chkconfig keepalived --list

2、10.203.178.127安装keepalived服务

a、软件安装

同上

b、配置keepalived

同上

# 修改

priority 99

# 删除

nopreempt

c、创建keepalived监控检查脚本

同上

d、创建 keepalived 角色切换为主之后的触发脚本

同上

e、启动keepalived并设置开机启动

同上

五、安装配置rsync服务：

功能：rysnc客户端可以将指定目录中的文件同步到rsync服务器端

1、10.203.178.125配置rsync服务

a、安装rsync、xinetd、inotify-tools软件

yum install -y rsync xinetd inotify-tools

b、编辑rsyncd.conf配置文件

vim /etc/cobbler/rsync.template

在前面插入下面这段

log file = /var/log/rsyncd.log

pidfile = /var/run/rsyncd.pid

lock file = /var/run/rsync.lock

secrets file = /etc/rsync.pass

motd file = /etc/rsyncd.Motd

[systems]

path = /app/cobbler/config/systems.d/

comment = systemd

uid = root

gid = root

use chroot = no

read only = no

list = no

max connections = 200

timeout = 600

auth users = appfiles_user

hosts allow = 10.203.178.127

[tftpboot]

path = /app/tftpboot/

comment = tftpboot

uid = root

gid = root

use chroot = no

read only = no

list = no

max connections = 200

timeout = 600

auth users = appfiles_user

hosts allow = 10.203.178.127

同步到/etc/rsyncd.conf配置文件中

cobbler sync

c、设置rsync同步的账号和密码

echo "appfiles_user:123456" > /etc/rsync.pass

chmod 600 /etc/rsyncd.conf

chmod 600 /etc/rsync.pass

d、配置rsync同步密码

echo 123456> /etc/keepalived/passwd.txt

chmod 600 /etc/keepalived/passwd.txt

e、设置rsync服务开机自启动

chkconfig rsync on

chkconfig rsync --list

f、配置rsync_inotify.sh脚本文件

同步路径：

src1=/app/cobbler/config/systems.d/

src2=/app/tftpboot/

vim /opt/rsync_scripts/rsync_inotify.sh

#!/bin/bash

#20150608

export PATH=$PATH:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/binsbin:/bin:/usr/sbin:/usr/bin:/root/bin

src1=/app/cobbler/config/systems.d/

src2=/app/tftpboot/

des1=systems

des2=tftpboot

passwdfile=/etc/keepalived/passwd.txt

ip=10.203.178.127

logfile=/var/log/rsync_app.log

if ! grep -q 8192000 /proc/sys/fs/inotify/max_user_watches ; then

echo 8192000 > /proc/sys/fs/inotify/max_user_watches

fi

/usr/bin/inotifywait -mrq --timefmt '%Y-%m-%d %H:%M' --format '%T %w%f %e' -modify,delete,create,attrib $src1 | \

while read file ; do

rsync -vzrtopg --delete --progress $src1 appfiles_user@$ip::$des1 --passworfile=$passwdfile

echo "$file was synced" >> ${logfile} 2>&1

done &

/usr/bin/inotifywait -mrq --timefmt '%Y-%m-%d %H:%M' --format '%T %w%f %e' -modify,delete,create,attrib $src2 | \

while read file ; do

rsync -vzrtopg --delete --progress $src2 appfiles_user@$ip::$des2 --passworfile=$passwdfile

echo "$file was synced" >> ${logfile} 2>&1

done &

sleep 2

date '+%Y-%m-%d %H:%M:%S' >> /var/log/rync_date.log

wait

2、10.203.178.127配置rsync服务

a、安装rsync、xinetd、inotify-tools软件

同上

b、编辑rsyncd.conf配置文件

vim /etc/cobbler/rsync.template

同上

# 修改

hosts allow = 10.203.178.125

同步到/etc/rsyncd.conf配置文件中

同上

c、设置rsync同步的账号和密码

同上

d、配置rsync同步密码

同上

e、重启xinetd服务并设置rsync服务开机自启动

chkconfig rsync on

chkconfig rsync --list

service xinetd restart

f、配置rsync_inotify.sh脚本文件

同上

#修改

ip=10.203.178.125

六、故障恢复：

1、场景简介

正常情况下，10.203.178.125作为主节点提供服务

10.203.178.127作为备节点

主节点上的数据实时同步到备节点

2、主节点10.203.178.125宕机的情况

a、恢复10.203.178.125服务

检查httpd服务

service httpd status

service httpd start

检查cobbler服务

service cobblerd status

service cobblerd start

检查api服务

telnet 127.0.0.1 8080

/bin/bash /app/cloud-pri-bms/code/run_app.sh start

b、同步10.203.178.127数据到10.203.178.125

10.203.178.125检查并启动xinetd服务

/etc/init.d/xinetd status

/etc/init.d/xinetd start        #未启动则手动启动服务

10.203.178.127执行同步脚本并创建文件

nohup sh /opt/rsync_scripts/rsync_inotify.sh >>/app/clog/rsync.log 2>&1 &

touch /app/cobbler/config/systems.d/1111.txt

touch /app/tftpboot/2222.txt

10.203.178.125上验证是否同步：

ll /app/cobbler/config/systems.d/

ll /app/tftpboot/

10.203.178.127上删掉刚才创建的文件

rm /app/cobbler/config/systems.d/1111.txt

rm /app/tftpboot/2222.txt

c、启动10.203.178.125高可用服务

检查keepalived服务并启动

service keepalived status

service keepalived start

3、备节点10.203.178.127宕机的情况

a、恢复10.203.178.127服务

检查httpd服务

service httpd status

service httpd start

检查cobbler服务

service cobblerd status

service cobblerd start

检查api服务

telnet 127.0.0.1 8080

/bin/bash /app/cloud-pri-bms/code/run_app.sh start

b、同步10.203.178.125数据到10.203.178.127

10.203.178.127检查并启动xinetd服务

service xinetd status

service xinetd start

10.203.178.125执行同步脚本并创建文件

touch /app/cobbler/config/systems.d/1111.txt

touch /app/tftpboot/2222.txt

10.203.178.127上验证是否同步

ll /app/cobbler/config/systems.d/

ll /app/tftpboot/

10.203.178.125上删掉刚才创建的文件

rm /app/cobbler/config/systems.d/1111.txt

rm /app/tftpboot/2222.txt

10.203.178.127重启cobbler服务并同步

service cobblerd restart

cobbler sync

c、启动10.203.178.127高可用服务

检查keepalived服务并启动

service keepalived status

service keepalived start

最新文章

  1. 关于MySQL的CRUD操作
  2. gcc 常用命令行及解释
  3. IOS绘制渐变背景色折线图的一种尝试
  4. 解决在android开发中ViewPager中Gallery无法滑动问题
  5. 5.POST中文乱码解决方案
  6. 故事板(Storyboard)
  7. 282. Expression Add Operators
  8. 1054. The Dominant Color (20)
  9. Android 换肤功能的实现（Apk插件方式）
  10. postgresql C/C++ API 接口
  11. 轻松搞定javascript日期格式化问题
  12. C# 调用C++ DLL 的类型转换
  13. NPAPI简介
  14. UIApplication 和 Appdelegate-----iOS
  15. Vue.js优雅的实现列表清单
  16. 【转】sed命令n，N，d，D，p，P，h，H，g，G，x解析
  17. mysql 按类别之用一条SQL语句查询出每个班前10名学生数据
  18. vim编辑器中没有高亮显示，退格键不能使用的问题
  19. Java面试知识点之线程篇（二）
  20. LaTeX 中使两张表格并排

热门文章

  1. exe4j打包--exe转安装包
  2. python自动化运维技术读书笔记
  3. vue组件传值之$attrs、$listeners
  4. Lasso估计论文学习笔记(一)
  5. java 中 size() 和 length()
  6. DIY显示器篇------DIY教程
  7. MySQL数据库安装步骤
  8. centos 7 修改sshd | 禁止 root登录及脚本定义
  9. stage_ros的world文件配置方法
  10. 007 Linux系统优化进阶