carnival 1.2

Fabric-based software provisioning tool

Carnival

Software provisioning tool, built on top of Fabric

Also carnival contrib package available.

• Runs on MacOs and Linux
• Tested on Ubuntu and CentOS

Install

$ pip3 install carnival
$ pip3 install carnival_contrib  # Optional community receipts

Docs

Documentation available at readthedocs.org

Cli

Usage

$ carnival --help
Usage: carnival [OPTIONS] [deploy_frontend|deploy_backend]...

    Options:
    -d, --dry_run  Simulate run
    --debug        Turn on debug mode
    --help         Show this message and exit.

Competion

• for Bash: place eval "$(_CARNIVAL_COMPLETE=source carnival)" in .bashrc
• for ZSH: place eval "$(_CARNIVAL_COMPLETE=source_zsh carnival)" in .zshrc

Quick example

carnival_file.py - entry point for carnival cli

Lets create one.

from carnival import Step, Host, Task, cmd

class Deploy(Task):
    def run(self):
        self.step(
            DeployFrontend(),
            Host("1.2.3.5", ssh_user="root", can="context", additional="give"),
        )

        self.step(
            DeployFrontend(),
            [
                Host("root@1.2.3.6", can="give", additional="context"),
                Host("root@1.2.3.7", can="context", additional="give"),
            ]
        )


class DeployFrontend(Step):
    def run(self, can, additional, **kwargs):
        cmd.apt.install_multiple("htop", "nginx")
        cmd.systemd.enable("nginx", start_now=True)


class DeployBackend(Step):
    def run(self, can, additional, **kwargs):
        cmd.apt.install_multiple("htop")
        cmd.docker.install_ce_ubuntu()
        cmd.docker.install_compose()

Run

$  python3 -m carnival deploy
💃💃💃 Runing ⛏frontend at 🖥 1.2.3.4
...
💃💃💃 Runing ⛏frontend at 🖥 1.2.3.5
...

Develop

Run tests

$ make dev  # Run docker containers for testing
$ make test_deps  # Install test dependencies
$ make test  # run static analyzers and tests
$ make qs  # Run static analyzers only
$ make nodev  # Stop docker containers

Run carnival from dev env

$ python3 -m carnival --help