选题: 20190929 Bash Script to Generate System Uptime Reports on Linux

sources/tech/20190929 Bash Script to Generate System Uptime Reports on Linux.md
2024-12-23 21:20:42 +08:00 · 2019-09-29 00:54:36 +08:00 · 2019-09-29 00:54:36 +08:00 · 476cebf7a4
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+[#]: collector: (lujun9972)
+[#]: translator: ( )
+[#]: reviewer: ( )
+[#]: publisher: ( )
+[#]: url: ( )
+[#]: subject: (Bash Script to Generate System Uptime Reports on Linux)
+[#]: via: (https://www.2daygeek.com/bash-script-generate-linux-system-uptime-reports/)
+[#]: author: (Magesh Maruthamuthu https://www.2daygeek.com/author/magesh/)
+
+Bash Script to Generate System Uptime Reports on Linux
+======
+
+For some purposes you may need to collect the **[Linux system uptime][1]** report once a month.
+
+If so, you can use one of the following **[bash scripts][2]** based on your requirements.
+
+Why should we collect this report?
+
+Restarting the Linux server after a certain period of time is a good practice to fix some pending issues.
+
+It is advisable to restart once in 180 days. But this period may vary depending on your company’s policy.
+
+If you have been running the server for a long time without restarting.
+
+This can lead to some performance issues or memory problems on the server, which I have noticed on many servers.
+
+These scripts provide all system uptime reports in one place.
+
+### What is Uptime Command
+
+uptime command will tell how long the system has been running. It gives a one line display of the following information.
+
+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.
+
+### What Is tuptime?
+
+[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.
+
+### 1) Bash Script to Check Linux System Uptime
+
+This bash script will collect all the server uptime and send the report to the given email id.
+
+Please replace your email id instead of ours, otherwise you will not receive mails.
+
+```
+# vi /opt/scripts/system-uptime-script.sh
+
+#!/bin/bash
+> /tmp/uptime-report.out
+for host in cat /tmp/servers.txt
+do
+echo -n "$host: "
+ssh $host uptime | awk '{print $3,$4}' | sed 's/,//'
+done | column -t >> /tmp/uptime-report.out
+cat /tmp/uptime-report.out | mail -s "Linux Servers Uptime Report" "[email protected]"
+```
+
+Set an executable permission to **“system-uptime-script.sh”** file.
+
+```
+$ chmod +x /opt/scripts/system-uptime-script.sh
+```
+
+Finally run the bash script to get the output.
+
+```
+# sh /opt/scripts/system-uptime-script.sh
+```
+
+You will receive a report like the one below.
+
+```
+# cat /tmp/uptime-report.out
+
+192.168.1.5:          2      days
+192.168.1.6:          15     days
+192.168.1.7:          30     days
+192.168.1.8:          7      days
+192.168.1.9:          67     days
+192.168.1.10:         130    days
+192.168.1.11:         23     days
+```
+
+### 2) Bash Script to Check If Linux System is Running Over 30 Days
+
+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.
+
+```
+# vi /opt/scripts/system-uptime-script-1.sh
+
+#!/bin/bash
+> /tmp/uptime-report-1.out
+for host in cat /tmp/servers.txt
+do
+echo -n "$host: "
+ssh $host uptime | awk '{print $3,$4}' | sed 's/,//'
+done | column -t >> /tmp/uptime-report-1.out
+cat /tmp/uptime-report-1.out | awk ' $2 >= 30' > /tmp/uptime-report-2.out
+cat /tmp/uptime-report-2.out | mail -s "Linux Servers Uptime Report" "[email protected]"
+```
+
+Set an executable permission to **“system-uptime-script-1.sh”** file.
+
+```
+$ chmod +x /opt/scripts/system-uptime-script-1.sh
+```
+
+Finally add a **[cronjob][4]** to automate this. It runs daily at 7AM.
+
+```
+# crontab -e
+
+0 7 * * * /bin/bash /opt/scripts/system-uptime-script-1.sh
+```
+
+**Note:** You will receive an email alert at 7AM every day, which is for yesterday’s date details.
+
+You will receive a report like the one below.
+
+```
+# cat /tmp/uptime-report-2.out
+
+192.168.1.7:          30     days
+192.168.1.9:          67     days
+192.168.1.10:         130    days
+```
+
+--------------------------------------------------------------------------------
+
+via: https://www.2daygeek.com/bash-script-generate-linux-system-uptime-reports/
+
+作者：[Magesh Maruthamuthu][a]
+选题：[lujun9972][b]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]: https://www.2daygeek.com/author/magesh/
+[b]: https://github.com/lujun9972
+[1]: https://www.2daygeek.com/linux-system-server-uptime-check/
+[2]: https://www.2daygeek.com/category/shell-script/
+[3]: https://www.2daygeek.com/linux-tuptime-check-historical-uptime/
+[4]: https://www.2daygeek.com/crontab-cronjob-to-schedule-jobs-in-linux/