Thinks to explore: 1

Zabbix
glusterfs
monit
bacula : -> open source network backup.
powerdns

nagios
puppet
Cacti
OpenTSDB
ganglia
Flume
Hadoop
logstash
graphite
 

Technology should need to learn:

    GFS, BigTable, MapReduce, Chubby and large-scale 'cloud computing' clusters.
    Languages: Python, Ruby, PHP, Perl, Javascript, Shell
    SQL/Database : MySQL, SQLite, Cassandra
    Distributed Caches: Redis, Memcache
    Distributed Processing: Hadoop + Pig + ZooKeeper + Mahout
    Cloud Platforms: Amazon Web Services, Google App Engine, Microsoft Azure
    Protocols: XMPP, Jingle, ICE, RTSP, SMTP, POP, IMAP
    Installers: NSIS
    Code Repository Tools: Git, SVN, CVS
    Collaboration: JIRA, Confluence
    Build Management: Ant, Maven, MsBuild, Nant, Glu, Hudsan
    OS: Linux (Redhat, CentOS), Ubuntu, freebsd
    Monitoring: Nagios, Cactii, Ganglia, nagiosgraph, RRDTools, Ntop
    CI: Teamcity, Clover, Hudson
    Config Management: Puppet
    Infrastructure: ServerIron Load Balancers,
    File Systems: Ext3, NTFS, XFS, GFS
    Mail Servers: Qmail, Postfix, Sendmail
    App/Web Servers: Tomcat, Resin, IIS, PHP Accelerator, Jetty, apache http
    Mailing List: Exmlm, Mailman, Sympa
    Jabber Servers: eJabberd, Tigase, Openfire
    VOIP Servers: Asterisk
    DNS Servers: BIND, Power DNS,
    Proxy servers: Squid, ISA, Perdition, NGinx, Varnish, Perlbal
    Few more: tcp/ip, http, load balancers, web servers, memcache,
    DB Replication: Slony, MSSQL Replication
    FTP Servers: Proftpd, VSftpd
    Virtualization: Xen, VmWare
    Patch Management: WSUS, Yum, up2date
    Apache, memcached, Squid, MySQL, NFS, DHCP, NTP, SSH, DNS, and SNMP
    Advanced knowledge of Linux, TCP/IP and web services
    A strong background in internet service deployment, provisioning, IP networking, service infrastructure, or software deployments.
    Bootstrap, other, awk, sed, tc, cfengine, openNMS, MRTC, OpenVPN, HAProxy.
    Security and venerability tools, CISSP, CEH tools.
    Storage.
    Dbugging tools, gd, firefox web tools: greasemonkey and other imp web imp tools/plugins.


Queue system: [ Message Broker ]

. Gearman
. RabbitMQ
. ZeroMQ
. Amazon SQS
. WebSphere  MQ [ MQSeries ]
. Advanced Message Queuing Protocol [ AMQP ]
. http://en.wikipedia.org/wiki/Gearman
. Redis
- web analytics softwares:  [ Analog, AWStats,CrawlTrack, Open Web Analytics, Piwik, W3Perl, Webalizer, syslog-ng ]
- awstat [ sudo apt-get install awstat ] at browser: file:///usr/share/doc/awstats/html/index.html
- webalizer [ web log analysis software ]
- nodejs
- mongodb

    Development
        Languages: Scala, Python, Ruby, Java, C#, VB.net, PHP, VC++, C++, Perl, XUL, Javascript, C, Shell
        Web Technologies: HTML 5, CSS, Dojo, jQuery, YUI, Flash, Silverlight
        Frameworks & Libraries: Hibernate, Hibernate Shards, Spring, Apache MINA, Project Grizzly, log4j, XAPool, Poolman
        RDBMS: Postgres, MySQL, Microsft SQL Server, Firebird, SQLite
        NoSql Stores: Redis, Cassandra, Voldemort, Berkeley DB
        Distributed Caches: Redis, Memcache
        Distributed Queues: Kestrel, RabbitMQ
        Distributed Processing: Hadoop + Pig + ZooKeeper + Mahout
        Cloud Platforms: Amazon Web Services, Google App Engine, Microsoft Azure
        Protocols: XMPP, Jingle, ICE, RTSP, SMTP, POP, IMAP
        Scripting: Perl, Python, Ruby
        Unit Testing: JUnit, NUnit, MbUnit
        Stress Testing: Jmeter, Tsung, Iozone, Iometer, Bonnie, Bonnie++
        Functional Testing: Watir, Selenium
        Installers: NSIS
        Code Repository Tools: Git, SVN, CVS
        Collaboration: JIRA, Confluence
        Build Management: Ant, Maven, MsBuild, Nant
        CI: Teamcity, Clover, Hudson
        IDEs: Aptana, Komodo, Eclipse, IntelliJ, Visual Studio, EMacs!
    System Administration
        OS: Linux (Redhat, CentOS), Windows
        Monitoring: Nagios, Cactii, Ganglia
        Config Management: Puppet
        Infrastructure: ServerIron Load Balancers, Cisco ASA Firewall, FC/iSCSI SANs (Comet, Dell)
        Scripting: Bash, Perl, Expect, Python, PHP, VBS, Powershell
        File Systems: Ext3, NTFS, XFS, GFS
        Other: DRBD, Heartbeat, ldirectord, RIS, LVS
    Servers
        App/Web Servers: Tomcat, Resin, IIS, PHP Accelerator, Jetty
        Mail Servers: Qmail, Postfix, Sendmail
        Mailing List: Exmlm, Mailman, Sympa
        Antivirus / Antispam: clamd, Razor, Kaspersky server, Pyzor, Policyd, RBL/DNSBL
        Jabber Servers: eJabberd, Tigase, Openfire
        VOIP Servers: Asterisk
        DNS Servers: BIND, Power DNS, DLZ, Microsoft DNS
        Proxy servers: Squid, ISA, Perdition, NGinx, Varnish, Perlbal
        DB Replication: Slony, MSSQL Replication
        FTP Servers: Proftpd, VSftpd
        Virtualization: Xen, VmWare
        Patch Management: WSUS, Yum, up2date
    UI
        UI Prototyping: Balsamiq, Axure
        Design: Photoshop, Flash, Coreldraw
        Web: ECMAscript (actionscript/javascript), RSS, XML, HTML (4.01), XHTML, CSS1.0 & CSS2.1

softwareLoadBalancer
http://linuxpoison.blogspot.in/2008/09/opensource-load-balancing-software.html

1. Linux Virtual Server  [ http://www.LinuxVirtualServer.org/  ]
2. BalanceNG  [  http://www.inlab.de/balanceng/  ]
3. HAproxy  [  http://haproxy.1wt.eu/ ]
4. Pen   [  http://siag.nu/pen/  ]
5. Crossroads Load Balancer  [ http://crossroads.e-tunity.com/ ]
6. balance [ http://www.inlab.de/balance.html ]
7. Distributor load balance   [ http://distributor.sourceforge.net/ ]
8. Pure load balancer   [ http://plb.sunsite.dk/ ]
9. Load Balancer Project  [ http://www.jmcresearch.com/projects/loadbalancer/ ]
10. mod_athena  [ http://ath.sourceforge.net/ ]
11. udpbalancer  [ http://dev.acts.hu/udpbalancer/  ]
12. MultiLoad   [ http://download.laukien.com ]
13. Zen Load balancer [ http://zenloadbalancer.sourceforge.net ]