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145 lines
4.6 KiB
Markdown
145 lines
4.6 KiB
Markdown
[#]: collector: (lujun9972)
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[#]: translator: (geekpi)
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[#]: reviewer: ( )
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[#]: publisher: ( )
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[#]: url: ( )
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[#]: subject: (Bash Script to Generate System Uptime Reports on Linux)
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[#]: via: (https://www.2daygeek.com/bash-script-generate-linux-system-uptime-reports/)
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[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
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Bash Script to Generate System Uptime Reports on Linux
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======
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For some purposes you may need to collect the **[Linux system uptime][1]** report once a month.
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If so, you can use one of the following **[bash scripts][2]** based on your requirements.
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Why should we collect this report?
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Restarting the Linux server after a certain period of time is a good practice to fix some pending issues.
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It is advisable to restart once in 180 days. But this period may vary depending on your company’s policy.
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If you have been running the server for a long time without restarting.
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This can lead to some performance issues or memory problems on the server, which I have noticed on many servers.
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These scripts provide all system uptime reports in one place.
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### What is Uptime Command
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uptime command will tell how long the system has been running. It gives a one line display of the following information.
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The current time, how long the system has been running, how many users are currently logged on, and the system load averages for the past 1, 5, and 15 minutes.
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### What Is tuptime?
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[Tuptime][3] is a tool for report the historical and statistical running time of the system, keeping it between restarts. Like uptime command but with more interesting output.
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### 1) Bash Script to Check Linux System Uptime
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This bash script will collect all the server uptime and send the report to the given email id.
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Please replace your email id instead of ours, otherwise you will not receive mails.
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```
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# vi /opt/scripts/system-uptime-script.sh
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#!/bin/bash
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> /tmp/uptime-report.out
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for host in cat /tmp/servers.txt
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do
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echo -n "$host: "
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ssh $host uptime | awk '{print $3,$4}' | sed 's/,//'
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done | column -t >> /tmp/uptime-report.out
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cat /tmp/uptime-report.out | mail -s "Linux Servers Uptime Report" "[email protected]"
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```
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Set an executable permission to **“system-uptime-script.sh”** file.
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```
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$ chmod +x /opt/scripts/system-uptime-script.sh
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```
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Finally run the bash script to get the output.
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```
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# sh /opt/scripts/system-uptime-script.sh
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```
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You will receive a report like the one below.
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```
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# cat /tmp/uptime-report.out
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192.168.1.5: 2 days
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192.168.1.6: 15 days
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192.168.1.7: 30 days
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192.168.1.8: 7 days
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192.168.1.9: 67 days
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192.168.1.10: 130 days
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192.168.1.11: 23 days
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```
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### 2) Bash Script to Check If Linux System is Running Over 30 Days
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This bash script collects server running over 30 days and sends the report to the given email id. You can change the days according to your needs.
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```
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# vi /opt/scripts/system-uptime-script-1.sh
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#!/bin/bash
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> /tmp/uptime-report-1.out
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for host in cat /tmp/servers.txt
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do
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echo -n "$host: "
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ssh $host uptime | awk '{print $3,$4}' | sed 's/,//'
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done | column -t >> /tmp/uptime-report-1.out
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cat /tmp/uptime-report-1.out | awk ' $2 >= 30' > /tmp/uptime-report-2.out
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cat /tmp/uptime-report-2.out | mail -s "Linux Servers Uptime Report" "[email protected]"
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```
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Set an executable permission to **“system-uptime-script-1.sh”** file.
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```
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$ chmod +x /opt/scripts/system-uptime-script-1.sh
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```
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Finally add a **[cronjob][4]** to automate this. It runs daily at 7AM.
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```
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# crontab -e
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0 7 * * * /bin/bash /opt/scripts/system-uptime-script-1.sh
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```
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**Note:** You will receive an email alert at 7AM every day, which is for yesterday’s date details.
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You will receive a report like the one below.
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```
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# cat /tmp/uptime-report-2.out
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192.168.1.7: 30 days
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192.168.1.9: 67 days
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192.168.1.10: 130 days
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```
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--------------------------------------------------------------------------------
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via: https://www.2daygeek.com/bash-script-generate-linux-system-uptime-reports/
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作者：[Magesh Maruthamuthu][a]
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选题：[lujun9972][b]
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译者：[译者ID](https://github.com/译者ID)
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校对：[校对者ID](https://github.com/校对者ID)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
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[a]: https://www.2daygeek.com/author/magesh/
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[b]: https://github.com/lujun9972
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[1]: https://www.2daygeek.com/linux-system-server-uptime-check/
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[2]: https://www.2daygeek.com/category/shell-script/
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[3]: https://www.2daygeek.com/linux-tuptime-check-historical-uptime/
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[4]: https://www.2daygeek.com/crontab-cronjob-to-schedule-jobs-in-linux/
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