How shell monitors scripts

This article mainly introduces shell how to monitor the script, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

1 prepare the monitoring machine

Linux system, ordinary server is fine, requirements:

Install ssh client, if you want to send SMS, you also need to prepare SMS cat and install gnokii or gammu

2 Edit ssh_config configuration file

/ etc/ssh/ssh_config configuration file, setting "GSSAPIAuthentication no"

Edit / etc/ssh/sshd_config the monitored linux, add UseDNS no, and finally restart sshd

3 Log in to the linux host using the key

4 set up a sh directory to store shell scripts

Mkdir-p / root/sh/crontab/log

The sh directory stores shell scripts

The crontab/log directory stores error messages

5 prepare the configuration file

The code is as follows:

Cat / root/sh/CONFIG

MOBILES= "13xxxxxxxxx 18xxxxxxxxx 13xxxxxxxxx"

MAILS= "dongnan@jb51.net user2@jb51.net"

ESXI_HOSTS= "192.168.57.91 192.168.57.93"

PHYSICAL_HOSTS= "192.168.57.112 192.168.0.1 192.168.57.99"

LINUX_WEB_HOSTS= "192.168.57.82 192.168.57.70 10.0.100.72 10.0.100.73 10.0.100.75 10.0.100.76 10.0.100.77 10.0.100.78"

WIN_WEB_HOSTS= "10.0.100.81 10.0.100.83"

DB_SLAVE_HOSTS= "10.0.100.82"

ALLHOSTS= "$ESXI_HOSTS $PHYSICAL_HOSTS $LINUX_WEB_HOSTS $WIN_WEB_HOSTS $DB_SLAVE_HOSTS"

Note: this profile is used to define global variables, including ip address, email address, phone number, etc.

6 crontab task planning

The code is as follows:

Crontab-l

# ping

* / 1 * / root/sh/chk_ping.sh > > / root/sh/cron.log 2 > & 1

# df

* / root/sh/chk_df.sh > > / root/sh/cron.log 2 > & 1

# load

* / 1 * / root/sh/chk_load.sh > > / root/sh/cron.log 2 > & 1

# mysql_replicate

* / 1 * / root/sh/chk_mysql_replicate.sh > > / root/sh/cron.log 2 > & 1

# web

* / 1 * / root/sh/chk_web.sh > > / root/sh/cron.log 2 > & 1

# xxxx

#..

Note: the execution time of the script] needs to be determined according to the actual function of the script. For example, chk_df monitors the disk space of the server and executes it once an hour.

All monitoring scripts are tested normally under rhel5/centos5, other linux systems please test by yourself.

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