walkingdevs/status-watcher repository overview

⁠Server (s) status watcher

It pings (every minute) servers in the servers.json file. Ping is a HTTP GET request or a TCP open connect. Telegram bot is used for notification. Every 10080 minute bot messages a report with servers uptime. How uptime is calculated (not accurate, but ok):

(successfull respond counts of server) * 100.0 / (alltime request count) 

"Server is down" notifications is send only when server is not responding in a 3 minutes. Because there can be a lot of routing failures. 3 minute delay is better than wrong "server is down" notifications

You should create a telegram bot and chat. Then pass bot token, bot username and chat ID as ENV variables to docker container. How to get chat ID? Example: create a chat, add bot as chat member, then go to the web.telegram.org and select chat. In browser's location bar you will see something like "https://web.telegram.org/#/im?p=g1234456789⁠". Chat ID is: -1234456789 (with minus, it's important)

⁠Quick usage

mkdir -pv status-watcher-dir

cat >> servers.json << EOF
{
  "http": [
    {
      "url": "http://google.com"
    },
    {
      "url": "https://vk.com"
    }
  ],
  "tcp": [
    {
      "host": "localhost",
      "port": 8080
    },
    {
      "host": "localhost",
      "port": 8081
    }
  ]
}
EOF

docker run --restart always -d \
           --name watcher \
           -v $PWD/status-watcher-dir:/status-watcher-dir \
           -e "token"="token" \
           -e "username"="username" \
           -e "chatId"="chatId" \
           walkingdevs/status-watcher