https://github.com/matsumotory/mruby-rcon

lightweight virtualization tool for linux processes module for mruby
https://github.com/matsumotory/mruby-rcon

Last synced: about 2 months ago
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lightweight virtualization tool for linux processes module for mruby

• Host: GitHub
• URL: https://github.com/matsumotory/mruby-rcon
• Owner: matsumotory
• License: other
• Created: 2015-11-25T02:31:36.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2018-11-14T03:20:00.000Z (about 6 years ago)
• Last Synced: 2024-10-18T18:23:33.772Z (3 months ago)
• Language: Ruby
• Homepage:
• Size: 8.79 KB
• Stars: 9
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# mruby-rcon

mruby-rcon is a lightweight virtualization mrbgem for linux processes.

## build rcon

```

rake

```

and create `rcon` binary into current directory.

## example

```ruby

# httpd.rb

Rcon.new({

  :command => "/usr/sbin/httpd -X",

  :resource => {

    # cgroup name

    :group => "httpd",

    # cgroup root path

    # centos "/cgroup" by default

    # ubuntu "/sys/fs/cgroup"

    :root => "/cgroup"

    # CPU [msec] exc: 30000 -> 30%

    :cpu_quota => 30000,

    # IO [Bytes/sec]

    :blk_dvnd => "202:0",

    :blk_rbps => 10485760,

    :blk_wbps => 10485760,

    # Memory [Bytes]

    :mem => 512 * 1024 * 1024,

    :oom => true,

  },

}).run

# callback memory limit event (default :oom)

# }).run_with_mem_eventfd do |ret|

#   puts "OOM KILLER!!! > #{ret}"

# end

# callback memory limit event for oom

# }).run_with_mem_eventfd(:oom) do |ret|

#   puts "OOM KILLER!!! > #{ret}"

# end

# callback memory limit event for usage(4MByte)

# }).run_with_mem_eventfd(:usage, 4 * 1024 * 1024) do |ret|

#   puts "Usage Up or Down to threadshould !!! > #{ret}"

# end

```

## run

```

sudo ./rcon httpd.rb

```

### auto memory expansion example

```ruby

Virtualing.new({

#(snip)

  :resource => {

    #(snip)

    :oom => false,

  },

#(snip)

}).run_with_mem_eventfd_loop do |ret|

  puts "OOM KILLER!!! current memory: #{mem}"

  sleep 2

  c = Virtualing::MEMORY.new group

  mem = mem * 2

  c.limit_in_bytes = mem

  c.modify

  puts "current memory expand to #{mem}"

end

```

## License

under the MIT License:

- see LICENSE file