dozzie's code

Welcome to the page dedicated to tools written by ​dozzie (GPG public key).

Most of these tools are written with system administrator's tasks in mind, so they address specific needs encountered by sysadmin (by me, in this case).

Projects

All the projects can be found here: ​http://dozzie.jarowit.net/code/. Some may also be published on ​GitHub. Perl modules are certainly pushed to ​CPAN.

The projects are managed in ​git version control system, so you'll need to learn it a bit if you want to access the code (though each tool has a short how-to-get instructions provided). History can be viewed on ​local gitweb instance.

No tarballs with code are provided, at least for now.

monitoring helpers

Seismometer

Monitoring system designed around processing stream of messages with state and metrics. The system consists of tools for generating, transporting, and processing JSON messages, and the tools can be useful on their own.

​Tool's home page

logdevourer

Log parsing standalone daemon, based on ​liblognorm library.

​Tool's repository

DashWiki

Wiki engine for dashboards. DashWiki integrates data from different sources (through XML-RPC, HTTP and such) and allows easy creation of dashboards, releasing sysadmin from necessity of writing web applications over and over again.

​Tool's home page

flowmon

Network flow monitor. Displays traffic summaries for flows, which are defined by ​BPF filters.

You can think of this being similar ​iftop.

Tool's page

general purpose sysadmin helpers

HarpCaller

RPC system for running administrative tasks on remote servers, designed to be usable from a web application. Procedures to be called are part of system’s configuration, and their returned results can be inspected at later time.

This is a second iteration over xmlrpcd idea.

​Tool's home page

yumbootstrap

Chroot installer for distributions that use Yum (mainly Red Hat, CentOS and Fedora). As the name suggests, it's a RPM clone for ​debootstrap.

Tool's page

cfgen

Config generator that uses templates (​Template::Toolkit) parametrized with ​YAML files filled with values for each host.

Tool's page

cronbuilder

Tool that pulls sources from one repository, builds them using supplied command and pushes changes to another repository.

Not a difficult thing, but constant rewriting scripts (to keep silence when no changes were made) is annoying when it comes to details.

Tool's page

xmlrpcd

Daemon and shell client utility, both using ​XML-RPC protocol wrapped in SSL and provided with HTTP authentication.

Daemon is just a trivial HTTP server, that passes XML-RPC calls to appropriate Perl scripts. It's just simpler to configure such a small daemon than Apache, lighttpd or nginx.

Tool's page

rsync-ssl

The Right Way(tm) of doing rsync over SSL. Uses stunnel 4.x.

Tool's page

sftponly

Remember ​scponly, a shell providing copy-only access to users?

Want to close them in chroot() environment?

Don't want to bother with creating full-blown chroot() or even small /dev contents?

This is the (my) way to go.

sftponly doesn't need any files -- especially device files -- in user's home directory, so it's quite easy to manage multiple copy-only accounts. Your users will not be able to break their environment anymore.

Tool's page

pwgen

pwgen is a password generator producing passwords that are easy to remember.

This is translation original ​pwgen tool (well, at least a generation algorithm) to Perl and Python languages.

Tool's page

cfauditdump

Tool that dumps audit database coming from ​cfengine 2.x (3.x in BerkeleyDB format works as well) in ​YAML format.

Tool's page

Erlang applications

Indira

Helper library making starting Erlang code as a daemon way easier.

Application's page

subproc

Subprocess manager for Erlang, providing more tools to work with unix processes and ports with a backpressure ({active,once} and passive modes).

Application's page

TOML

​TOML file loader library.

Application's page

gen_inotify

Linux' inotify(7) subsystem bindings.

Application's page

estap

Simple test library for Erlang. Mimics excellent ​Test::More module and is a ​TAP producer.

Module's page

xmerlrpc

XML-RPC client and server library.

Application's page

mod_sse

Low-dependency ​Server-Sent Events server side implementation.

Application's page

Python modules

liblognorm bindings

Python bindings for ​liblognorm, log parsing library. Bindings support liblognorm version 1.1.x.

​Module's repository

Perl modules

​Log::Message::JSON

Module for structured logging. Log::Message::JSON is basically a hash(ref) that magically stringifies to JSON when necessary.

​Module's CPAN page

​Log::Log4perl::Appender::Fluent

Module for structured logging. It's a ​Log::Log4perl appender that submits data to ​Fluentd. It works with plain strings, but when passed ​Log::Message::JSON or ​Log::Message::Structured, it passes full structure.

​Module's CPAN page

​Sys::Facter

Perl clone of ​Facter, compatible with ​pfacter.

​Module's CPAN page

Ruby modules

Test::TAP::More

Simple test framework for Ruby. Mimics excellent ​Test::More module and is a ​TAP producer.

Module's page

Quick build how-to

Many of the tools (especially recent ones) are prepared to make a package (DEB and RPM).

1. Clone the repository:

   git clone http://dozzie.jarowit.net/code/cfgen.git
   

2. Install tools for building packages
   • for Debian: packages dpkg-dev, fakeroot, build-essential
   • for Red Hat/CentOS: packages make, rpm-build

And possibly compilers (gcc, g++).

3. Build a package:
   • for Debian:

     dpkg-buildpackage -b -uc
     

   • for Red Hat/CentOS:

     make srpm
     rpmbuild --rebuild *.src.rpm
     

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For original Trac start page, see WikiStartOld.