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ildkule/gatus: add healthcheck for mariadb

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h7x4
2026-07-21 16:15:05 +09:00
parent a99a83c0d8
commit 3d551fab52
2 changed files with 86 additions and 0 deletions
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hosts/ildkule/services/monitoring/gatus/default.nix
+7
View File
@@ -6,6 +6,7 @@ in
imports = [
./minecraft-checker.nix
./postgres-checker.nix
./mariadb-checker.nix
];
services.gatus = {
@@ -140,6 +141,12 @@ in
"[BODY].ok == true"
];
})
(mkService "MariaDB" "http://localhost:1339" // {
conditions = [
"[STATUS] == 200"
"[BODY].ok == true"
];
})
(mkService "Email (SMTP)" "starttls://mail.pvv.ntnu.no:587")
(mkService "Email (POP3)" "tls://mail.pvv.ntnu.no:995")
(mkService "Email (IMAP)" "tls://mail.pvv.ntnu.no:993")
hosts/ildkule/services/monitoring/gatus/mariadb-checker.nix
+79
View File
@@ -0,0 +1,79 @@
{ config, pkgs, ... }:
{
sops.secrets."keys/gatus/mariadb" = {
restartUnits = [ "phh-gatus-mariadb-checker.service" ];
};
sops.templates."gatus-mariadb-checker.env" = {
restartUnits = [ "phh-gatus-mariadb-checker.service" ];
content = ''
MYSQL_HOST=mysql.pvv.ntnu.no
MYSQL_PORT=3306
MYSQL_DATABASE=mysql
MYSQL_USER=gatus_healthcheck
MYSQL_PASSWORD=${config.sops.placeholder."keys/gatus/mariadb"}
'';
};
services.python-http-handlers."gatus-mariadb-checker" = {
listenStreams = [ "127.0.0.1:1339" ];
libraries = with pkgs.python3Packages; [
pymysql
];
serviceConfig = {
EnvironmentFile = config.sops.templates."gatus-mariadb-checker.env".path;
};
handler = ''
import os
import json
import pymysql
class Handler(BaseHTTPRequestHandler):
def do_GET(self):
try:
conn = pymysql.connect(
host=os.environ["MYSQL_HOST"],
port=int(os.environ.get("MYSQL_PORT", "3306")),
user=os.environ["MYSQL_USER"],
password=os.environ["MYSQL_PASSWORD"],
database=os.environ.get("MYSQL_DATABASE", "mysql"),
connect_timeout=5,
)
try:
with conn.cursor() as cur:
cur.execute("SELECT VERSION();")
(version,) = cur.fetchone()
cur.execute("SHOW STATUS LIKE 'Threads_connected';")
(_, connections) = cur.fetchone()
cur.execute("SHOW DATABASES;")
databases = cur.fetchall()
finally:
conn.close()
body = {
"ok": True,
"version": version,
"connections": int(connections),
"databases": len(databases),
}
data = json.dumps(body).encode()
self.send_response(200)
self.send_header("Content-Type", "application/json")
self.send_header("Content-Length", str(len(data)))
self.end_headers()
self.wfile.write(data)
except Exception as e:
data = json.dumps({"ok": False, "error": str(e)}).encode()
self.send_response(500)
self.send_header("Content-Type", "application/json")
self.send_header("Content-Length", str(len(data)))
self.end_headers()
self.wfile.write(data)
'';
};
}