39 lines
715 B
Plaintext
39 lines
715 B
Plaintext
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#!/bin/bash
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#
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# check_ping_by_hostname
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#
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# Attempts to resolve the name for and ping ourselves based on the device's
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# hostname.
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#
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name="$HOSTNAME"
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# Ensure $name is available
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if [ -z "$name" ]; then
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echo "CRITICAL: No hostname(?!)"
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exit 2
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fi
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# Ensure we have the tools we need
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for cmd in dig ping; do
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if ! command -v "$cmd" > /dev/null 2>&1; then
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echo "UNKNOWN: Missing command for check: $cmd"
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exit 3
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fi
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done
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# Ensure we can dig ourselves
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if [ -z "$(dig +short "$name")" ]; then
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echo "CRITICAL: Could not resolve hostname or found empty record: $name"
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exit 2
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fi
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# Ping ourselves
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if ! ping "$name" -c 1 > /dev/null 2>&1; then
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echo "CRITICAL: Could not ping self"
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exit 2
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else
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echo "OK"
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exit 0
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fi
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