Hap - A simple and effective provisioner.

Hap helps manage build scripts with git and run them concurrently on multiple remote hosts using composable blocks.

First, hap create to setup a new local repo. Then add hosts to the generated Hapfile.Once hosts are in place, hap init will setup the remote hosts. Finally, hap build will execute the build blocks and commands specified in the Hapfile for each host. After hap build a .happened file is saved with the current sha of remote repo. To run hap build again a new commit is required.

Tun arbitrary commands use hap c, and to execute individual scripts with hap exec.

If you only have one host, just use the default section. Then the -all or -host flag while running hap is not necessary.

Make sure every build script is executable before committing to the local repo.

Installation

via Go

go get github.com/gwoo/hap/cmd/hap

Binaries

darwin/amd64

curl -L -C - -O https://github.com/gwoo/hap/releases/download/v1.4/hap-darwin-amd64; chmod a+x hap-darwin-amd64

linux/amd64

curl -L -C - -O https://github.com/gwoo/hap/releases/download/v1.4/hap-linux-amd64; chmod a+x hap-linux-amd64

Basic Workflow

• Run hap create <name>
• Modify Hapfile
• Run hap init and hap build

Environment Variables

Hap exports HAP_HOSTNAME, HAP_USER, HAP_ADDR for use in scripts.

Hapfile

The Hapfile uses git-config syntax. There are 3 sections, default, host, and build. The default section holds host config that will be applied to all hosts. The host section holds a named host config. A host config includes addr, username, password, identity, build, and cmd. Only addr is required. The identity should point to a local ssh private key that has access to the host via the authorized_keys. The build section holds mulitple cmds that could be applied to a host. Multiple build and cmd are permitted for each host.

Example Hapfile

A default build is specified, so init.sh and update.sh are executed for each host. Host one specifies two commands, notify.sh and cleanup.sh, to be run after the default build commands.

[default]
username = "root"
identity = "~/.ssh/id_rsa"
build = "default" ; applied to all hosts

[host "one"]
addr = "10.0.20.10:22"
cmd = "./notify.sh"
cmd = "./cleanup.sh"

[host "two"]
addr = "10.0.20.11:22"

[build "default"]
cmd = ./init.sh
cmd = ./update.sh

Usage

Usage of hap:
  -all=false: Use ALL the hosts.
  -host="": Individual host to use for commands.
  -v=false: Verbose flag to print command log.

Available Commands:
hap build			Run the builds and commands from the Hapfile.
hap c <command>		Run an arbitrary command on the remote host.
hap create <name>	Create a new Hapfile at <name>.
hap exec <script>	Execute a script on the remote host.
hap init			Initialize a new remote host.
hap push			Push current repo to the remote.

License

The BSD License http://opensource.org/licenses/bsd-license.php.