rconf

rconf is configuration server with web UI that will sync service configuration to remote machines instantly.

• Why?
• Quick start
• Code execution
• Cookbook
  • join all devices in single vpn network using zerotier

Why?

Puppet, salt, ansible all invent their own languages for configuration. You need to google how to do simpliest things. Why should you, if you can use same commands you are used to?

Quick start

install rconf on server machine

curl https://i.jpillora.com/slavaGanzin/rconf! | bash

run rconf and configure your server by answering a list of questions

$ rconf                                                                                                                               

? Select networks will share your config:
 wlp0s20f3 [192.168.1.85/24]
? Web GUI username: admin
? Web GUI password: admin
? Remote sync token: ea9b50e5de7e17e0ff38f0b7808917acbbe87ca6ce46ee831d5c009bf87a2049
? Daemonize with systemd? No
To install on remote machine:
  curl https://i.jpillora.com/slavaGanzin/rconf! | bash

wlp0s20f3:
  Web UI:
    http://192.168.1.85:14141  
  sync config command:
    rconf http://192.168.1.85:14141/ea9b50e5de7e17e0ff38f0b7808917acbbe87ca6ce46ee831d5c009bf87a2049

open web UI

# this is my internal ip, look for your url in your own cli
chromium http://192.168.1.85:14141

uncomment services key in rconf.yaml using web UI

services:
  #service name
  hello:
    #will work only on machines that selected tag "test" for syncronization
    tag: test
    #will work only on linux machines
    platform: linux
    files:
      #local file hello.sh will be copied to /usr/local/bin/hello.sh on remote machine
      hello.sh: /usr/local/bin/hello.sh
    install:
      #if running \`which hello.sh\` will fail on remote machine - apply \`chmod\`
      hello.sh: chmod +x /usr/local/bin/hello.sh
    #command that will rerun on every update of configuration files
    command: hello.sh world

Select commented lines and press CTRL+/ Press CTLR+S to save!

edit hello.sh in Web ui

#!/usr/bin/env bash

echo "Hello $1!"

Press CTLR+S to save!

copy sync config command from server console and run it

$ rconf "http://192.168.1.85:14141/ea9b50e5de7e17e0ff38f0b7808917acbbe87ca6ce46ee831d5c009bf87a2049"

? Node id: node1
? Select tags to sync:
 test
? Daemonize with systemd? No
✔ run: hello.sh world
Hello world!

Code execution

If you need dynamic configuration, i.e. tailored for each host use {{{return javascript code}}} in any configuration file (except rconf.yaml). For example:

#nginx.conf
http {
    events {
        worker_connections {{{return parseInt(Math.random()*100)}}};
    }
    server {
        listen {{{return rconf.interfaces.eth0.address}}}:3001;
        server_name {{{
            if (rconf.env.HOSTNAME) return rconf.env.HOSTNAME
            return 'default.hostname'
          }};
    }
}

Is this secure? No. Use with caution

Cookbook

join all devices in single vpn network using zerotier

services:
  zerotier-linux:
    tag: zerotier-network1
    platform: linux
    install:
      zerotier-cli: curl -s https://install.zerotier.com | sudo bash
    command: zerotier-cli join network1