# Sparrowdo Perl6 Configuration Management Tool. # Build status [![Build Status](https://travis-ci.org/melezhik/sparrowdo.svg)](https://travis-ci.org/melezhik/sparrowdo) # Install zef install Sparrowdo # Usage sparrowdo --host=remote-host [options] For example: # ssh host, bootstrap first, use of local repository sparrowdo --host=13.84.166.232 --repo=file:///home/gimy/repo --verbose --bootstrap # docker host, don't add sudo sparrowdo --docker=SparrowBird --no_sudo # localhost, with sudo sparrowdo --localhost # DSL Sparrow6 DSL is high level functions to manage configurations. Just create a file named `sparrowdo` in current working directory and add few functions: $ cat sparrowfile user 'zookeeper'; group 'birds'; directory '/var/data/avifauna/greetings/', %( owner => 'zookeeper' ); file-create '/var/data/avifauna/greetings/sparrow.txt', %( owner => 'zookeeper', group => 'birds', mode => '0644', content => 'I am little but I am smart' ); service-start 'nginx'; package-install ('nano', 'ncdu', 'mc' ); The full list of function is available at [Sparrow6 DSL](https://github.com/melezhik/Sparrow6/blob/master/documentation/dsl.md) documentation. If DSL is not enough you can call any Sparrow6 plugin using `task-run` function: task-run "show me your secrets", "azure-kv-show", %( kv => "Stash" # key vault name secret => ( "password", "login" ) # secret names ) ## DSL vs `task-run` function DSL is high level adapter with addition of some "syntax sugar" to make a code concise and readable. DSL functions are Perl6 functions, you take advantage of input parameters validation. However DSL is limited. Not every Sparrow6 plugin has related DSL function. Once we've found some Sparrow6 plugin common enough we add a proper DSL wrapper for it. In case you need more DSL wrappers let us know! # Sparrowdo workflow ==================== ==================== | | --- [ Bootstrap ] | | LocalHost | MasterHost | --- [ Sparrowdo Scenario ] ---> | TargetHost | Docker | | * | | Ssh ==================== | ==================== {Sparrow6 Module} | {Sparrow6 Module} \ parameters \-----------------> [ tasks ] ^ ^ ^ / / / ------------ / / / { Repository } --------------------- ------------ [ plugins ] ------------ / | \ / | \ / | \ / | \ [CPAN] [RubyGems] [PyPi] ## Master host Master host is where Sparrow6 tasks "pushed" to target hosts. Sparrowdo should be installed on master host: $ zef install Sparrowdo ## Sparrowdo scenario Sparrowdo scenario is collection of Sparrow6 tasks executed on target host. ## Target hosts Target hosts are configured by Sparrow6 which should be installed there as well: $ zef install Sparrow6 ## Bootstrap Bootstrap is process of automation of Sparrow6 installation on target host: $ sparrowdo --host=192.168.0.1 --bootstrap Bootstrap runs under `sudo` and requires sudo privileges on target host. ## Sudo Execution of Sparrow6 tasks on target host is made under `sudo` by default, to disable this use `no_sudo` flag: $ sparrowdo --docker=brave_cat --no_sudo # We don't need sudo on docker ## Varios types of target hosts Once sparrowfile is created it could be run on target host. Ssh host: $ sparrowdo --host=192.168.0.1 Docker container: $ sparrowdo --docker=old_dog Localhost: $ sparrowdo --localhost ## Repositories Sparrowdo use Sparrow6 repository to download tasks that are executed on target hosts. During scenario execution Sparrowdo pulls plugins from repository and runs it _with parameters_. Plugin that gets run with parameters is a Sparrow6 task. * Detailed explanation of Sparrow6 tasks is available at [Sparrow6 development](https://github.com/melezhik/Sparrow6/blob/master/documentation/development.md) documentation. * Detailed explanation of Sparrow6 plugins [Sparrow6 plugins](https://github.com/melezhik/Sparrow6/blob/master/documentation/plugins.md) documentation * Detailed explanation of Sparrow6 repositories is available at [Sparrow6 repositories](https://github.com/melezhik/Sparrow6/blob/master/documentation/repository.md) documentation. By default local repository located at `~/repo` is used: $ sparrowdo --host=192.168.0.1 # using repo ~/repo Use `--repo` flag to set repository URI. For example: $ sparrowdo --repo=file:///tmp/repo --localhost # use /tmp/repo repository for local mode $ docker run --name --name=fox -d sh -v /tmp/repo:/var/data $ sparrowdo --repo=/var/data --docker=fox --repo=file://var/data # mount /tmp/repo to /var/data within docker instance $ sparrowdo --repo=http://sparrow.repo # use http repository Ssh mode supports synchronizing local file repositories with master and target host using rsync. It extremely useful if for some reason you can't use http based repositories: $ sparrowdo --sync=/tmp/repo --host=192.168.0.1 # rsync local repository /tmp/repo to target host # and use it within target host Read [Sparrow6 documentation](https://github.com/melezhik/Sparrow6/blob/master/documentation/repository.md) to know more about Sparrow6 repositories. # Sparrowdo files anatomy When Sparrowdo scenario executed there are might be _related_ that get _copied_ to a target host, for convenience, so that one can reliably refer to those files inside Sparrowdo scenario. Thus Sparrowdo _project_ might consists of various files and folders: . ├── conf │ └── alternative.pl6 ├── config.pl6 ├── data │ └── list.dat ├── files │ └── baz.txt ├── sparrowfile └── templates └── animals.tmpl * `sparrowfile` The minimal setup is just `sparrowfile` placed in the current working directory. That file contains Sparrowdo scenario to be executed. One may optionally define other data that make up the whole set up: * `conf` Directory to hold configuration files * `config.pl6` Default configuration file, if placed in current working directory will define Sparrowdo configuration, see also [scenarios configuration](#scenario-configuration) section, alternatively one may place configuration file to `conf` directory and choose to run with that file: $ sparrowdo --conf=conf/alternative.pl6 * `files` Directory containing files, so one could write such a scenario: file "/foo/bar/baz.txt", %( source => "files/baz.txt" ) * `templates` The same as `files` directory, but for templates, technically `templates` and `files` as equivalent, but named separately for logical reasons. Obviously one can populate templates using that directory: template-create '/var/data/animals.txt', %( source => ( slurp 'templates/animals.tmpl' ), owner => 'zookeeper', group => 'animals' , mode => '644', variables => %( name => 'red fox', language => 'English' ), ); * `data` The same as `files` and `templates` folder but to keep "data" files, just another folder to separate logically different pieces of data: file "/data/list.txt", %( source => "data/list.dat" ) # Scenario configuration If `config.pl6` file exists at the current working directory it _will be loaded_ via Perl6 [EVALFILE](https://docs.perl6.org/routine/EVALFILE) at the _beginning_ of scenario. For example: $ cat config.pl6 { user => 'foo', install-base => '/opt/foo/bar' } Later on in the scenario you may access config data via `config` function, that returns configuration as Perl6 Hash object: $ cat sparrowfile my $user = config; my $install-base = config; To refer configuration files at arbitrary location use `--conf` parameter: $ sparrowdo --conf=conf/alternative.conf See also [Sparrowdo files anatomy](#sparrowdo-files-anatomy) section. # Including other Sparrowdo scenarios Because Sparrowdo scenarios are Perl6 code files, you're free to include other scenarios into "main" one using via Perl6 [EVALFILE](https://docs.perl6.org/routine/EVALFILE) mechanism: $ cat sparrowfile EVALFILE "another-sparrowfile"; Including another scenario does not include related files (`data`, `files`, `templates`) into main one, so you can only reuse Sparrowdo scenario itself, but not it's _related_ files. # Bootstrap and manual install To ensure that target hosts has all required Sparrow6 dependencies one may choose bootstrap mechanism that installs those dependencies on target host. This operation is carried out under `sudo`. Bootstrap is disabled by default and should be enabled by `--bootstrap` option: $ sparrowdo --host=192.168.0.1 --bootstrap Be aware that all dependencies will be installed _system wide_ rather then user account, because `sudo` is used. if you don't want bootstrap target host, you can always choose to install Sparrow6 zef module on target host, which is enough to start using Sparrowdo to manage target host: $ zef install Sparrow6 # Run Sparrowdo on docker Sparrowdo supports docker as target host, just refer to running docker container by name to run Sparrowdo scenario on it: $ sparrowdo --docker=running-horse # Run Sparrowdo on ssh hosts This is probably one the most common use case for Sparrowdo - configuring servers by ssh: $ sparrowdo --host=192.168.0.1 # Run Sparrowdo in local mode In case you need to run sparrowdo on localhost use `--localhost` flag: $ sparrowdo --localhost # Sparrowdo cli `sparrowdo` is Sparrowdo cli to run Sparrowdo scenarios, it accepts following arguments: * `--host` Ssh host to run Sparrowdo scenario on. Default value is `127.0.0.1`, none required. * `--docker` Docker container name to run Sparrowdo scenario on, none required. * `--localhost` If set, runs Sparrowdo in localhost, in that case Sparrow6 tasks get run directly withouth launching ssh * `--ssh_user` If set defines ssh user when run Sparrowdo scenarion over ssh, none required. * `--ssh_port` If set defines ssh port to use when run Sparrowdo scenarion over ssh. Default value is 22. If set, run Sparrowdo scenario on localhost, don't consfuse with `--host=127.0.0.1` which runs scenarion on the machine but using ssh. * `--repo` Defines Sparrow6 repository `URI`, for example: --repo=https://192.168.0.1 # Remote http repository --repo=file:///var/data/repo # Local file system repository If `--repo` is not set, Sparrowdo uses default local repository located at `~/repo` path. Sparrowdo uses repository to pull plugins from, see also [Sparrowdo workflow](#sparrowdo-workflow) section. See also [Sparrow6 Repositories](https://github.com/melezhik/Sparrow6/blob/master/documentation/repository.md) documentation. * `--sync` If set synchronize local file system repository with target hosts using `rsync`, it's useful if for some reasons remote http repositories are not available or disable, so one can _automatically copy_ repository from master host to target. `--sync` parameter value should file path pointing repository directory at master host: --sync=/var/data/repository * `--no_index_update` If set, don't request Sparrow6 repository update. Useful when in limited internet and using http based remote repositories. * `--verbose` If set print additional information during Sparrowdo scenario execution. * `--debug` If set, runs Sparrow6 tasks in `debug` mode, giving even more information, during scenario execution. * `--prefix` If set, define path to be appending to local cache directory on target host, used predominantly when running concurrent Sparrowdo scenario on one target host, for example in Sparky CI server. None required, no default value. # Author Alexey Melezhik # See also * [Sparrow6](https://github.com/melezhik/Sparrow6) # Thanks To God as the One Who inspires me to do my job!