HI! I continue blogging about sparrowdo - a simple perl6 configuration management tool.

This is what we've learned so far:

Installing packages

Consider out latest example with installing CPAN packages:

$ cat sparrowfile use v6; use Sparrowdo; task_run %( task => 'install CGI', plugin => 'cpan-package', parameters => %( list => 'CGI' ), );

What we are trying to do here is to install CGI CPAN module using cpan-package plugin. Here is little trick is hidden. A cpan-package implies you have a cpanm client pre-installed at your system. Let's see what will happen if it is not:

$ sparrowdo --ssh_port=2200 --host=127.0.0.1 --ssh_user=vagrant running sparrow tasks on 127.0.0.1 ... running task <install-CGI> plg <cpan-package> parameters: {list => CGI} /opt/sparrow/tmp/8417/opt/sparrow/plugins/public/cpan-package/story.t .. # [/opt/sparrow/plugins/public/cpan-package/modules/cpanm] # install CGI ... # /opt/sparrow/plugins/public/cpan-package/modules/cpanm/story.bash: line 22: cpanm: command not found not ok 1 - scenario succeeded # Failed test 'scenario succeeded' # at /usr/local/share/perl/5.20.2/Outthentic.pm line 193. not ok 2 - output match 'install ok' # [/opt/sparrow/plugins/public/cpan-package] # cpan-package-done ok 3 - output match 'cpan-package-done' 1..3 # Failed test 'output match 'install ok'' # at /usr/local/share/perl/5.20.2/Outthentic.pm line 239. # Looks like you failed 2 tests of 3. Dubious, test returned 2 (wstat 512, 0x200) Failed 2/3 subtests Test Summary Report ------------------- /opt/sparrow/tmp/8417/opt/sparrow/plugins/public/cpan-package/story.t (Wstat: 512 Tests: 3 Failed: 2) Failed tests: 1-2 Non-zero exit status: 2 Files=1, Tests=3, 0 wallclock secs ( 0.02 usr 0.00 sys + 0.10 cusr 0.00 csys = 0.12 CPU) Result: FAIL The spawned process exited unsuccessfully (exit code: 1) in block <unit> at /home/melezhik/.rakudobrew/moar-nom/install/share/perl6/site/resources/CDEEEB90951FEDF24FB0EE4EFB79E7A6061B289C line 3

Upps, obviously we see the reason of the failure here:

cpanm: command not found

So, we need to install cpanm client to our system first to make it working cpan-package plugin. One day I probably add this dependency into cpan-package itself , but for now we could use a package-generic plugin to install any system packages.

Luckily we have cpanminus ubuntu package to install cpanm client on our ubuntu box:

$ cat sparrowfile use v6; use Sparrowdo; task_run %( task => 'install cpanm client', plugin => 'package-generic', parameters => %( list => 'cpanminus' ) ); task_run %( task => 'install CGI', plugin => 'cpan-package', parameters => %( list => 'CGI', ), );

Let's give it a run ...

$ sparrowdo --ssh_port=2200 --host=127.0.0.1 --ssh_user=vagrant running sparrow tasks on 127.0.0.1 ... running task <install cpanm client> plg <package-generic> parameters: {list => cpanminus} /opt/sparrow/tmp/8792/opt/sparrow/plugins/public/package-generic/story.t .. # [/opt/sparrow/plugins/public/package-generic/modules/apt-get] # trying to install cpanminus ... # installer - apt-get # Package: cpanminus # Version: 1.7014-1 # Status: install ok installed ok 1 - output match 'Status: install ok installed' # [/opt/sparrow/plugins/public/package-generic] # package-generic-done ok 2 - output match 'package-generic-done' 1..2 ok All tests successful. Files=1, Tests=2, 2 wallclock secs ( 0.02 usr 0.00 sys + 0.67 cusr 0.20 csys = 0.89 CPU) Result: PASS running task <install-CGI> plg <cpan-package> parameters: {list => CGI} /opt/sparrow/tmp/10304/opt/sparrow/plugins/public/cpan-package/story.t .. # [/opt/sparrow/plugins/public/cpan-package/modules/cpanm] # install CGI ... # CGI is up to date. (4.31) # install ok ok 1 - output match 'install ok' # [/opt/sparrow/plugins/public/cpan-package] # cpan-package-done ok 2 - output match 'cpan-package-done' 1..2 ok All tests successful. Files=1, Tests=2, 0 wallclock secs ( 0.01 usr 0.00 sys + 0.18 cusr 0.05 csys = 0.24 CPU) Result: PASS

Ok, now it succeeded!

A few comments on package-generic usage:

A limited set of platforms are supported - CentOS, Ubuntu, Debian. At least this works for me. If you need more - let me know or make a pull request!

No "platform-sensitive" packages naming conventions available like in other more mature systems ( chef, ansible ).

One day I would like something like that into sparrowdo API:

task_run %( task => 'install apache webserver', plugin => 'package-generic', parameters_for_platform => %( ubuntu => %( list => 'apache2' ), debian => %( list => 'apache2' ), cetnos => %( list => 'httpd' ), default => %( list => 'apache2' ), ), );

And finally. No specific version installation is supported. The plugin is quite simple. But it works for me. If you consider more complicated cases - let me know! :)

Cleaning up old packages

In case you have Ubuntu, Debian boxes a latest version of package-generic plugin make it possible to autoremove old, useless stuff:

task_run %( task => 'remove old packages', plugin => 'package-generic', parameters => %( action => 'autoremove' ) );

That is it. Approaching to the end ... :)

All the best. And see you soon. I have not thought about next topic too much, but probably I will be talking about managing users and groups with the help of sparrowdo ...