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プロセスの数、CPU使用率、メモリ使用率(RSS/VSZ)を取るプラグインです
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| #!/bin/bash | |
| # MIT License | |
| # | |
| # Copyright (c) 2025 buty4649 | |
| # | |
| # Permission is hereby granted, free of charge, to any person obtaining a copy | |
| # of this software and associated documentation files (the "Software"), to deal | |
| # in the Software without restriction, including without limitation the rights | |
| # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| # copies of the Software, and to permit persons to whom the Software is | |
| # furnished to do so, subject to the following conditions: | |
| # | |
| # The above copyright notice and this permission notice shall be included in all | |
| # copies or substantial portions of the Software. | |
| # | |
| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| # SOFTWARE. | |
| # Mackerel plugin for process monitoring | |
| # Usage: ./mackerel-plugin-proc-stats process_name | |
| process_name="$1" | |
| if [ -z "$process_name" ]; then | |
| echo "Usage: $0 process_name" >&2 | |
| exit 1 | |
| fi | |
| # Output meta information when MACKEREL_AGENT_PLUGIN_META is set | |
| if [ "$MACKEREL_AGENT_PLUGIN_META" = "1" ]; then | |
| cat << EOF | |
| # mackerel-agent-plugin | |
| { | |
| "graphs": { | |
| "proc_stats.${process_name}": { | |
| "label": "Process ${process_name}", | |
| "unit": "integer", | |
| "metrics": [ | |
| { | |
| "name": "count", | |
| "label": "Process Count" | |
| }, | |
| { | |
| "name": "cpu_percent", | |
| "label": "CPU Usage (%)" | |
| }, | |
| { | |
| "name": "rss", | |
| "label": "RSS Memory", | |
| "unit": "bytes" | |
| }, | |
| { | |
| "name": "vsz", | |
| "label": "VSZ Memory", | |
| "unit": "bytes" | |
| } | |
| ] | |
| } | |
| } | |
| } | |
| EOF | |
| exit 0 | |
| fi | |
| timestamp=$(date +%s) | |
| prefix="proc_stats.${process_name}" | |
| # Get process metrics using ps and awk | |
| ps -C "$process_name" -o %cpu,rss,vsz --no-headers 2>/dev/null | awk -v prefix="$prefix" -v timestamp="$timestamp" ' | |
| BEGIN { | |
| total_cpu = 0 | |
| total_rss = 0 | |
| total_vsz = 0 | |
| process_count = 0 | |
| } | |
| { | |
| if (NF >= 3 && $1 ~ /^[0-9]*\.?[0-9]+$/ && $2 ~ /^[0-9]+$/ && $3 ~ /^[0-9]+$/) { | |
| total_cpu += $1 | |
| total_rss += $2 * 1024 # KB to Bytes | |
| total_vsz += $3 * 1024 # KB to Bytes | |
| process_count++ | |
| } | |
| } | |
| END { | |
| if (process_count == 0) { | |
| exit 1 | |
| } | |
| print prefix ".count\t" process_count "\t" timestamp | |
| print prefix ".cpu_percent\t" total_cpu "\t" timestamp | |
| print prefix ".rss\t" total_rss "\t" timestamp | |
| print prefix ".vsz\t" total_vsz "\t" timestamp | |
| }' | |
| # Check awk exit status and handle process not found | |
| if [ $? -ne 0 ]; then | |
| echo "Process '$process_name' not found" >&2 | |
| exit 1 | |
| fi |
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