npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

p3x-systemd-manager

v2024.4.121

Published

⌚ SystemD Manager, watchdog, notifier and service

Downloads

106

Readme

NPM Donate for Corifeus / P3X Contact Corifeus / P3X Corifeus @ Facebook Uptime Robot ratio (30 days)

⌚ SystemD Manager, watchdog, notifier and service v2024.4.121

Bugs are evident™ - MATRIX️

NodeJS LTS is supported

Built on NodeJs version

v22.1.0

Description

Use case

Get a notification via e-mail when a SystemD service becomes failed. If you enable boot, every times to startup the notifier, it sends failed and not-found (trigger) services so you can remove them from SystemD and get cleaned.

Also it is easy to configure additional triggers like running, stopped or all the whole SystemD changes via LoadState / other properties and trigger a result / status and notify or add in different notifier like Twitter / Facebook etc.

Evolve

It is easy to evolve the functions. I just created for my server to get failed services via notify e-mail, but if you need additional functions, please fork and pull. It is easy to add in anything or change services etc... All DBus based and async/await wrappers.

Detailed

It is a Linux/Unix/BSD (tested only in Debian/Testing repo) based SystemD manager. Notifies via e-mail with NodeMailer, it polls via an interval as a watchdog. It also has a wrapper for DBus to manage services and via events as well if you do not like polling. I guess watchdog will be replaced 100%.

SystemD DBus Manager

References: DBus, Node Dbus

Prerequisites

#you probably might need a c++11 if it is old, 
#for additional requirements check out .travis.yml
sudo apt-get install libdbus-1-dev libglib2.0-dev

Using from code

Please do not use yarn, because it asks for sudo and prompt (unless you are root).

npm install p3x-systemd-manager --save

SystemD DBus Notifier

#!/usr/bin/env node
const systemd = require('p3x-systemd-manager');
const settings = systemd.lib.getSettings();
if (settings === false) {
    return;
}
systemd.boot(settings);
systemd.notifier(settings);

SystemD Watchdog Notify

This notifies changes in the SystemD via e-mail. Right now it polls, so that it gets all changes. It task about 30-50 milliseconds per run on my 3.3 GHz Pentium 2 cores, not too much. All automatic, requires email and a few tweaks as you want.

const Watchdog = require('p3x-systemd-manager').watchdog;
const settings = require('./settings.json');
const watchdog = Watchdog(settings);
watchdog.run();
Looks like this
Feb 22 11:41:31 server systemd[1]: Started p3x-watchdog.
Feb 22 11:41:32 server watchdog[2196]: started
Feb 22 11:41:32 server watchdog[2196]: watchdog type(s): service
Feb 22 11:41:32 server watchdog[2196]: ping: 2 hours
Feb 22 11:41:32 server watchdog[2196]: interval: 10 seconds
Feb 22 11:41:32 server watchdog[2196]: command: systemctl --plain --no-pager --no-legend  --type=service
Feb 22 11:41:32 server watchdog[2196]: ping - 51 items - every 2 hours
Feb 22 11:41:32 server watchdog[2196]: Mail is working.

Using terminal

git clone https://github.com/patrikx3/systemd-manager.git
cd systemd-manager
sudo apt-get install libdbus-1-dev libglib2.0-dev
npm install
./notifier settings.json
#it is used to be a watchdog, polling
./watchdog settings.json

Settings

Checkout artifacts/setttings.json

filter.type: Array, can be empty, actual man systemctl type. Service is the safest. Not always working when you fine tune, some are weird.

nodemailer.config: Exact nodemailer config, any of that.

interval, ping: Uses npm milliseconds framework for turn into actual milliseconds from a string. This is for Watchdog, not needed anymore.

sudo: for the watchdog either you need to use root, or via sudo (true|false). For SystemD needs root, but you can use another user, and it will use sudo then when polling.

For SystemD DBus notifier you need to use root anyway. I think it cannot do anything else so it's safe to take over the system, also it's internal, no web interface for now.

{
    "debug": false,
    "filter": {
        "type": [
            "service"
        ],
        "exclude": [],
        "include": [],
        "trigger": {
            "SubState": [
                "failed"
            ]
        }
    },
    "boot": {
        "enabled": true,
        "trigger": {
            "SubState": [
                "failed"
            ]
        }
    },
    "moment": "LLL",
    "prefix": "P3X-SYSTEMD-NOTIFIER",
    "dbus": {
        "address": "unix:path=/run/dbus/system_bus_socket",
        "display": ":0"
    },
    
    "interval": "watchdog only",
    "interval": "10 seconds",
    
    "ping": "watchdog only",
    "ping": "2 hours",
    
    "sudo": "watchdog only",
    "sudo": false,
    
    "email": {
        "to": "system@localhost",
        "from": "system@localhost"
    },
    "nodemailer": {
        "singleton": true,
        "config": {
            "host": "mail.localhost",
            "port": 465,
            "secure": true,
            "auth": {
                "user": "system@localhost",
                "pass": "unknown"
            }
        }
    },
    "ignoreErrors": [
        "The maximum number of pending replies per connection has been reached",
        "No introspectable"
    ]
}

Weird errors

There are 2 errors that I could not catch or why it happens, so I created a hack:

const settings = {
    "ignoreErrors": [
        "The maximum number of pending replies per connection has been reached",
        "No introspectable"
    ]
}
process.on("unhandledRejection", function (err) {
    if (err && err.message && settings.ignoreErrors.includes(err.message)) {
        console.warn('ignoring error', err)
    } else {
        // user your own logic
        console.error(err)
        process.exit(-1)
    }
});

The two error messages:

"The maximum number of pending replies per connection has been reached"
"No introspectable"

Support Our Open-Source Project ❤️

If you appreciate our work, consider starring this repository or making a donation to support server maintenance and ongoing development. Your support means the world to us—thank you!

Server Availability

Our server may occasionally be down, but please be patient. Typically, it will be back online within 15-30 minutes. We appreciate your understanding.

About My Domains

All my domains, including patrikx3.com and corifeus.com, are developed in my spare time. While you may encounter minor errors, the sites are generally stable and fully functional.

Versioning Policy

Version Structure: We follow a Major.Minor.Patch versioning scheme:

  • Major: Corresponds to the current year.
  • Minor: Set as 4 for releases from January to June, and 10 for July to December.
  • Patch: Incremental, updated with each build.

Important Changes: Any breaking changes are prominently noted in the readme to keep you informed.


P3X-SYSTEMD-MANAGER Build v2024.4.121

NPM Donate for Corifeus / P3X Contact Corifeus / P3X Like Corifeus @ Facebook