57 lines
1.8 KiB
Bash
57 lines
1.8 KiB
Bash
#!/bin/bash
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# Checkmk Local Check: Alle NPM-SSL-Zertifikate prüfen mit Domainnamen
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# Speicherort: /usr/lib/check_mk_agent/local/npm_cert_check.sh
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CERT_BASE="/etc/letsencrypt/live"
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WARN_DAYS=30
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CRIT_DAYS=10
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check_cert() {
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local cert_file="$1"
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# CN (Common Name) auslesen
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CN=$(openssl x509 -noout -subject -in "$cert_file" 2>/dev/null | sed -n 's/^subject=.*CN=//p')
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if [ -z "$CN" ]; then
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CN=$(basename "$(dirname "$cert_file")") # Fallback: Ordnername
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fi
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# Ablaufdatum auslesen
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EXPIRY_DATE=$(openssl x509 -enddate -noout -in "$cert_file" 2>/dev/null | cut -d= -f2)
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if [ -z "$EXPIRY_DATE" ]; then
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echo "2 cert_${CN} - Fehler beim Lesen des Zertifikats"
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return
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fi
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EXPIRY_TS=$(date -d "$EXPIRY_DATE" +%s)
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NOW_TS=$(date +%s)
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DAYS_LEFT=$(( (EXPIRY_TS - NOW_TS) / 86400 ))
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# Status setzen
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if [ $DAYS_LEFT -lt 0 ]; then
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STATUS=2
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elif [ $DAYS_LEFT -le $CRIT_DAYS ]; then
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STATUS=2
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elif [ $DAYS_LEFT -le $WARN_DAYS ]; then
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STATUS=1
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else
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STATUS=0
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fi
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# SAN-Einträge (Alternative Namen) auslesen
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SAN=$(openssl x509 -noout -text -in "$cert_file" 2>/dev/null | grep -A1 "Subject Alternative Name" | tail -n1 | sed 's/DNS://g; s/,//g')
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echo "$STATUS cert_${CN} days_left=$DAYS_LEFT;${WARN_DAYS};${CRIT_DAYS};0; Zertifikat '$CN' läuft in $DAYS_LEFT Tagen ab (SAN: $SAN)"
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}
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# Alle Zertifikate unter /etc/letsencrypt/live/npm-* prüfen
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if [ -d "$CERT_BASE" ]; then
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find "$CERT_BASE" -mindepth 1 -maxdepth 1 -type d -name "npm-*" | while read -r dir; do
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cert_file="$dir/fullchain.pem"
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if [ -f "$cert_file" ]; then
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check_cert "$cert_file"
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fi
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done
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else
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echo "2 cert_check - Zertifikatspfad $CERT_BASE nicht gefunden"
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fi
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