56 lines
1.7 KiB
Bash
56 lines
1.7 KiB
Bash
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#!/bin/bash
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: '
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This script writes the CPU usage and the free disk space to a file in a loop.
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The results are prepended to the file, so the most recent results are at the
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top. This is so that the most recent information can easily be read from the
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top of the file and the file can easily be truncated if needed.
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This script is run by the serverload.service systemd process. The
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serverload.service file should be copied to
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/etc/systemd/system/serverload.service.
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The systemd process can then be started with the following commands:
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sudo systemctl start serverload.service
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The status of the process can be checked with:
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sudo systemctl is-active serverload.service
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'
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# Define Loop Interval
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loop_interval=60
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webportal_repo_setup_scripts="/home/user/skynet-webportal/setup-scripts"
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logfile_name="serverload.log"
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logfile=$webportal_repo_setup_scripts/$logfile_name
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jsonfile="serverload.json"
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nginx_docker_path="/usr/local/share"
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# Create logfile if it doesn't exist
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if [[ ! -e $logfile ]]; then
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echo "init" > $logfile
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fi
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# Write the output in an infinite loop.
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while true; do
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# CPU usage
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cpu=$(echo $[100-$(vmstat 1 2|tail -1|awk '{print $15}')])
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sed -i "1iCPU: ${cpu}" $logfile
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# Disk Usage
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disk=$(df -Ph . | tail -1 | awk '{print $4}')
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sed -i "1iDISK: ${disk}" $logfile
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# Write the timestamp
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timestamp=$(date)
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sed -i "1iTIMESTAMP: ${timestamp}" $logfile
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# Write and copy a json file of the latest results to nginx docker container
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# to serve
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printf '{"cpu":"%s","disk":"%s","timestamp":"%s"}' "$cpu" "$disk" "$timestamp" > $webportal_repo_setup_scripts/$jsonfile
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docker cp $webportal_repo_setup_scripts/$jsonfile nginx:$nginx_docker_path/$jsonfile
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# Sleep
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sleep $loop_interval
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done
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