mgmt

README

mgmt: This is: mgmt!

Community:

Come join us on IRC in #mgmtconfig on Freenode! You may like the #mgmtconfig hashtag if you're on Twitter.

Questions:

Please join the #mgmtconfig IRC community! If you have a well phrased question that might benefit others, consider asking it by sending a patch to the documentation FAQ section. I'll merge your question, and a patch with the answer!

Quick start:

• Clone the repository recursively, eg: git clone --recursive https://github.com/purpleidea/mgmt/.
• Get the remaining golang dependencies on your own, or run make deps if you're comfortable with how we install them.
• Run make build to get a freshly built mgmt binary.
• Run time ./mgmt run --file examples/graph0.yaml --converged-timeout=1 to try out a very simple example!
• To run continuously in the default mode of operation, omit the --converged-timeout option.
• Have fun hacking on our future technology!

Examples:

Please look in the examples/ folder for more examples!

Documentation:

Please see: DOCUMENTATION.md or PDF.

Roadmap:

Please see: TODO.md for a list of upcoming work and TODO items. Please get involved by working on one of these items or by suggesting something else! Feel free to grab one of the straightforward #mgmtlove issues if you're a first time contributor to the project or if you're unsure about what to hack on!

Bugs:

Please set the DEBUG constant in main.go to true, and post the logs when you report the issue. Bonus points if you provide a shell or OMV reproducible test case. Feel free to read my article on debugging golang programs.

Dependencies:

• golang 1.4 or higher (required, available in most distros)

• golang libraries (required, available with go get)

    go get github.com/coreos/etcd/client
    go get gopkg.in/yaml.v2
    go get gopkg.in/fsnotify.v1
    go get github.com/codegangsta/cli
    go get github.com/coreos/go-systemd/dbus
    go get github.com/coreos/go-systemd/util
    go get github.com/coreos/pkg/capnslog
  

• stringer (required for building), available as a package on some platforms, otherwise via go get

    go get golang.org/x/tools/cmd/stringer
  

• pandoc (optional, for building a pdf of the documentation)

• graphviz (optional, for building a visual representation of the graph)

Patches:

We'd love to have your patches! Please send them by email, or as a pull request.

On the web:

• James Shubin; blog: Next generation configuration mgmt
• James Shubin; video: Introductory recording from DevConf.cz 2016
• James Shubin; video: Introductory recording from CfgMgmtCamp.eu 2016
• Julian Dunn; video: On mgmt at CfgMgmtCamp.eu 2016
• Walter Heck; slides: On mgmt at CfgMgmtCamp.eu 2016
• Marco Marongiu; blog: On mgmt
• Felix Frank; blog: From Catalog To Mgmt (on puppet to mgmt "transpiling")
• James Shubin; blog: Automatic edges in mgmt (...and the pkg resource)
• James Shubin; blog: Automatic grouping in mgmt
• John Arundel; tweet: “Puppet’s days are numbered.”
• Felix Frank; blog: Puppet, Meet Mgmt (on puppet to mgmt internals)
• Felix Frank; blog: Puppet Powered Mgmt (puppet to mgmt tl;dr)
• James Shubin; blog: Automatic clustering in mgmt
• James Shubin; video: Recording from CoreOSFest 2016
• James Shubin; video: Recording from DebConf16 (Slides)

Happy hacking!

Documentation

Overview

The elastic etcd algorithm works in the following way: * When you start up mgmt, you can pass it a list of seeds. * If no seeds are given, then assume you are the first server and startup. * If a seed is given, connect as a client, and optionally volunteer to be a server. * All volunteering clients should listen for a message from the master for nomination. * If a client has been nominated, it should startup a server. * All servers should list for their nomination to be removed and shutdown if so. * The elected leader should decide who to nominate/unnominate to keep the right number of servers.

package packagekit // TODO

Pgraph (Pointer Graph)