Collabograte

Collabograte: An Integration Platform for Collaboration Components Kartik Subbarao Consultant kartiksubbarao.com subbarao@computer.org Code: https://github.com/kartiksubbarao/collabograteMailing list: http://groups.google.com/group/collabograte

The Integration Challenge Project A Project B Upstream Projects OS Distribution OS Distributions A.rpm/deb B.rpm/deb Company 1 Company 2 Enterprise IT A B A B

One Option: Preintegrated Stacks Project A Project B Upstream Projects OS Distribution A A.rpm/deb B B.rpm/deb Preintegrated OS Distributions Stack Stack Providers Company 1 Company 2 Enterprise IT A B A B

Collabograte Company 1 A BProject A OS Distribution A.rpm/deb B.rpm/deb Company 2 Project B A B Collabograte

Objectives● Provide a platform for integrating collaboration components● Build a community of IT integrators who are interested in collaboration● Provide a channel for communicating integration-related feedback to upstream projects and OS distributions

What Collabograte is Not● Collabograte is not: – A preintegrated, turnkey solution – A single stack of fixed deliverables – A business – A hosted service – A heavyweight repository for “certified” versions of upstream code – Targeted for nontechnical end users

VM KVM Xen OS CentOS RHEL Ubuntu Debian Configuration Management Puppet ChefCollabograte Directory OpenLDAP 389DSComponents Wiki MediaWiki MoinMoin DokuWikiCurrently Supported Blogs WordPress Drupal Mail Possible Future Transport Postfix Mail Store Cyrus IMAP Dovecot Mailing Lists Sympa Discussion Forums INN phpBB Instant ejabberd jabberd2 Openfire Messaging Other TBD

Context: Integration and Differentiation Upstream Projects High need for Differentiation Intermediate need for OS Distributions Differentiation and Integration High need for Enterprise IT Integration

Guiding Principles

Use and Contribute to Actively Maintained Work● Use existing OS packages wherever possible, and seek to improve them where necessary● Contribute integration-friendly features to upstream projects● Maximize both technical and collaborative benefits

Maximize User Freedom● Enable as many useful platforms/components/tools as possible● Choose dependencies as consciously as possible● Open Source – FreeBSD license

Minimize Footprint of Configuration Changes● Change only those things that need to be changed● Keep in mind that integration is rarely a one- time event, while managing current requirements● Pay attention to evolving application defaults● Treat configuration files as collections of objects and make targeted modifications – Augeas is a valuable tool for this

Augeas Example● Given the following in /etc/hosts: 192.168.122.10 example.com● The following Augeas command: set /files/etc/hosts/*[canonical = example.com] /alias[last()+1] lists.example.com● Looks for the /etc/hosts entry with a canonical hostname of example.com, and adds lists.example.com as an alias: 192.168.122.10 example.com lists.example.com● More info at http://augeas.net

Flexibility and Structure● Both flexibility and structure are valuable● Integration often involves the art of adapting something without changing it too much● It may make sense to selectively override principles as a tradeoff

Integration Overview

VM Installation on a Host System● Install the prerequisite RPMs on the host system with yum install qemu-kvm libvirt virt-manager virt-viewer rpm-build● Clone the collabograte git repository on the host system with git clone https://github.com/kartiksubbarao/collabograte● Create the virtual machine on the host system with create_vm.sh● Build the collabograte-puppet RPM on the host system with make -C puppet rpm● Copy the collabograte RPM to the guest VM and install it with yum install collabograte-pupppet*.rpm● Apply the puppet manifests on the guest VM with puppet apply -e include collabograte

Common Module● Module for configurations/settings that are referenced/required across multiple modules● Host/Domain name● Common utility packages● Administrative usernames and passwords● Syslog configuration

LDAP Directory● Currently supports OpenLDAP● Sample LDIF and additional schema sourced from the Fedora 389 Directory Server Project● Username and password authentication● Groups used as mailing lists and IM groups

dn: uid=scarter,ou=People,dc=example,dc=comobjectClass: topobjectClass: personobjectClass: organizationalPersonobjectClass: inetOrgPersoncn: Sam CartergivenName: Samsn: Carterou: Accountingl: Sunnyvaleuid: scartermail: scarter@example.comtelephoneNumber: +1 408 555 4798facsimileTelephoneNumber: +1 408 555 9751roomNumber: 4612manager: uid=dmiller,ou=People,dc=example,dc=com

Wiki● Currently supports MediaWiki● Uses the LdapAuthentication extension to integrate with the LDAP Directory● Partially configured with WWW::Mechanize

Blogs● Currently supports WordPress Multisite● Uses the wpDirAuth plugin to integrate with the LDAP Directory● Partially configured with WWW::Mechanize

Mail Transport and Mail Store● Currently supports Postfix for Mail Transport and Cyrus IMAP for the Mail Store● Postfix and Cyrus IMAP are integrated with LMTP● Postfix uses LDAP for mail routing decisions, and Cyrus IMAP uses saslauthd to authenticate users against the LDAP Directory

Mailing Lists and Discussion Forums● Currently supports Sympa for Mailing Lists and INN for Discussion Forums (Newsgroups)● Sympa uses LDAP for user authentication and authorization● Lists are maintained as groups in the LDAP directory● Sympa Lists are bidirectionally gatewayed to INN Newsgroups

Instant Messaging● Currently supports ejabberd● Uses the LDAP Directory for authentication, authorization and roster membership

Git Tags and Branches● Git tags mark release versions for the project as a whole, or for one or more components● Git branches enable local customizations for specific components, to be managed alongside common configuration● The project community will evolve these conventions over time

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Collabograte

by Kartik Subbarao on Feb 27, 2012

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