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How to use iptables to realize backup and restore operation in Linux

2025-01-23 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >

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Linux how to use iptables to achieve backup and recovery operations, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

1. Iptables configuration file location: / etc/sysconfig/iptables

Master computer: that is, the machine in the operation of the business; backup machine: that is, when the master computer fails, it switches to the backup machine.

-- the operation on the main control computer

2. Set up a directory:

The code is as follows:

Mkdir-p / bak/iptables/

Mkdir / root/script/

3. Create a script in the / root/script/ directory:

The code is as follows:

Vi backup.sh

Cp / etc/sysconfig/iptables / bak/iptables/iptables_$ (date +% Y%m%d%H)

4. Customize automatic tasks:

The code is as follows:

Crontab-e

* / 10 * / usr/sbin/ntpdate 210.72.145.44

10 * sh / root/script/backup.sh

-- operate on the backup machine

5. Set up a directory:

The code is as follows:

Mkdir-p / bak/iptables/ {lt,yd} # lt directory put Unicom jump backup, yd directory put mobile jump backup

Mkdir / root/script/

6. Create a script in the / root/script/ directory:

The code is as follows:

Vi scp_lt.sh

#! / usr/bin/expect-f

Set password gst

Spawn scp-P 22 root@202.105.135.52:/etc/sysconfig/iptables / bak/iptables/lt/iptables

Set timeout 300

Expect "root@202.105.135.52's password:"

Set timeout 300

Send "$passwordr"

Set timeout 300

Send "exitr"

Expect eof

7. Create a script in the / root/script/ directory:

The code is as follows:

Vi scp_yd.sh

#! / usr/bin/expect-f

Set password gst

Spawn scp-P 22 root@183.62.178.91:/etc/sysconfig/iptables / bak/iptables/yd/iptables

Set timeout 300

Expect "root@183.62.178.91's password:"

Set timeout 300

Send "$passwordr"

Set timeout 300

Send "exitr"

Expect eof

8. Create a script in the / root/script/ directory:

The code is as follows:

Vi backup.sh

Expect / root/script/scp_lt.sh

Expect / root/script/scp_yd.sh

Sed-I's Universe 202.105.135.52 / bak/iptables/lt/iptables 183.62.178.85

Sed-I's Placement 58.251.49.18 Plus 58.250.56.154Compact g'/ bak/iptables/lt/iptables

Cp / bak/iptables/lt/iptables / etc/sysconfig/iptables

/ etc/init.d/iptables restart

/ etc/init.d/iptables save

Mv / bak/iptables/lt/iptables / bak/iptables/lt/iptables_$ (date +% Y%m%d%H)

Mv / bak/iptables/yd/iptables / bak/iptables/yd/iptables_$ (date +% Y%m%d%H)

9. Note that you need to log in remotely once on the backup machine to get the public key of RSA, and then you don't have to log in like this, otherwise the script will execute an error

10. Customize automatic tasks:

The code is as follows:

Crontab-e

* / 10 * / usr/sbin/ntpdate 210.72.145.44

20 * sh / root/script/backup.sh

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