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Merged
martialblog merged 2 commits into from
Jun 9, 2026
Merged

Add authentication methods #7

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af9127c
Add authentication methods
martialblog Jun 9, 2026
163c904
Improve alertname
martialblog Jun 9, 2026
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14 changes: 12 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -25,14 +25,22 @@ Usage: notify-alertmanager.sh [OPTIONS]

Options:
-t TYPE Object type: host | service
-T NOTIFICATION_TYPE Icinga notification type: PROBLEM | RECOVERY | ACKNOWLEDGEMENT | FLAPPINGSTART | FLAPPINGSTOP | DOWNTIMESTART | DOWNTIMEEND
-T NOTIFICATION_TYPE Icinga notification type:
PROBLEM | RECOVERY | ACKNOWLEDGEMENT |
FLAPPINGSTART | FLAPPINGSTOP | DOWNTIMESTART | DOWNTIMEEND
-H HOST_NAME Icinga host name
-u ALERTMANAGER_URL Alertmanager base URL (default: http://localhost:9093)
-U USER:PASSWORD Basic authentication credentials
-C CERT_FILE Client certificate file (PEM)
-K KEY_FILE Client private key file (PEM)
-S CA_FILE CA certificate file (PEM)
-c COMMENT Notification comment
-a AUTHOR Notification author
-i ICINGA_URL Icinga URL for the object (used in annotations)
-l LABELS Extra labels as comma-separated key=value pairs
-s STATE Object state: UP | DOWN | UNREACHABLE | OK | WARNING | CRITICAL | UNKNOWN
-s STATE Object state:
UP | DOWN | UNREACHABLE |
OK | WARNING | CRITICAL | UNKNOWN
-v Verbose output
-h Show this help

Expand All @@ -45,6 +53,8 @@ Service options:
-N SERVICE_DISPLAY_NAME Service display name (optional)
```

The options `ALERTMANAGER_URL` and `ALERTMANAGER_BASIC_AUTH` can be set via environment variables.

Examples:

```bash
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35 changes: 27 additions & 8 deletions notify-alertmanager.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
set -euo pipefail

ALERTMANAGER_URL="${ALERTMANAGER_URL:-http://localhost:9093}"
ALERTMANAGER_BASIC_AUTH=${ALERTMANAGER_BASIC_AUTH:-}
TIMEOUT=10
NOTIFICATION_TYPE=""
OBJECT_TYPE=""
Expand All @@ -14,6 +15,9 @@ SERVICE_NAME=""
SERVICE_DISPLAY_NAME=""
NOTIFICATION_COMMENT=""
NOTIFICATION_AUTHOR=""
CA_CERT=""
CLIENT_CERT=""
CLIENT_KEY=""
ICINGA_URL=""
EXTRA_LABELS=""
VERBOSE=0
Expand All @@ -26,7 +30,11 @@ Options:
-t TYPE Object type: host | service
-T NOTIFICATION_TYPE Icinga notification type: PROBLEM | RECOVERY | ACKNOWLEDGEMENT | FLAPPINGSTART | FLAPPINGSTOP | DOWNTIMESTART | DOWNTIMEEND
-H HOST_NAME Icinga host name
-u ALERTMANAGER_URL Alertmanager base URL (default: $ALERTMANAGER_URL)
-u ALERTMANAGER_URL Alertmanager base URL (env: ALERTMANAGER_URL)
-U USER:PASSWORD Basic authentication credentials (env: ALERTMANAGER_BASIC_AUTH)
-C CERT_FILE Client certificate file (PEM)
-K KEY_FILE Client private key file (PEM)
-S CA_FILE CA certificate file (PEM)
-c COMMENT Notification comment
-a AUTHOR Notification author
-i ICINGA_URL Icinga URL for the object (used in annotations)
Expand All @@ -47,7 +55,7 @@ EOF
}

# Parsing arguments
while getopts ":t:T:H:d:A:n:N:s:u:c:a:i:l:vh" opt; do
while getopts ":t:T:H:d:A:n:N:s:u:c:a:i:l:vhU:C:K:S:" opt; do
case $opt in
t) OBJECT_TYPE="$OPTARG" ;;
T) NOTIFICATION_TYPE="$OPTARG" ;;
Expand All @@ -58,6 +66,10 @@ while getopts ":t:T:H:d:A:n:N:s:u:c:a:i:l:vh" opt; do
N) SERVICE_DISPLAY_NAME="$OPTARG" ;;
s) STATE="$OPTARG" ;;
u) ALERTMANAGER_URL="$OPTARG" ;;
U) ALERTMANAGER_BASIC_AUTH="$OPTARG" ;;
C) CLIENT_CERT="$OPTARG" ;;
K) CLIENT_KEY="$OPTARG" ;;
S) CA_CERT="$OPTARG" ;;
c) NOTIFICATION_COMMENT="$OPTARG" ;;
a) NOTIFICATION_AUTHOR="$OPTARG" ;;
i) ICINGA_URL="$OPTARG" ;;
Expand Down Expand Up @@ -87,9 +99,9 @@ fi

# Determine alert state and severity
if [[ "$OBJECT_TYPE" == "service" ]]; then
ALERTNAME="IcingaService"
ALERTNAME="IcingaNotificationForService"
else
ALERTNAME="IcingaHost"
ALERTNAME="IcingaNotificationForHost"
fi

# Simple JSON string escaping (handles quotes, backslashes, newlines)
Expand Down Expand Up @@ -208,19 +220,26 @@ if [[ "$VERBOSE" -eq 1 ]]; then
fi

# Sending the notification
HTTP_RESPONSE=$(curl \
CURL_CMD=(curl \
--silent \
--show-error \
--max-time "$TIMEOUT" \
--connect-timeout 5 \
--write-out "\n%{http_code}" \
--request POST \
--header "Content-Type: application/json" \
--data "$PAYLOAD" \
"$ENDPOINT" 2>&1) || {
--data "$PAYLOAD"
)

[[ -n "$ALERTMANAGER_BASIC_AUTH" ]] && CURL_CMD+=(--user "$ALERTMANAGER_BASIC_AUTH")
[[ -n "$CLIENT_CERT" ]] && CURL_CMD+=(--cert "$CLIENT_CERT")
[[ -n "$CLIENT_KEY" ]] && CURL_CMD+=(--key "$CLIENT_KEY")
[[ -n "$CA_CERT" ]] && CURL_CMD+=(--cacert "$CA_CERT")

HTTP_RESPONSE=$("${CURL_CMD[@]}" "$ENDPOINT" 2>&1) || {
echo "ERROR: Alertmanager unreachable at $ENDPOINT" >&2
exit 2
}
}

HTTP_BODY=$(echo "$HTTP_RESPONSE" | sed '$d')
HTTP_CODE=$(echo "$HTTP_RESPONSE" | tail -n1)
Expand Down