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System Administration of Splunk

System Administration of Splunk. Take the sh out of IT. What is it?. Search and analysis engine Google like search of your log data. Versions. Free 500MB/day Reporting Ad-hoc search Enterprise (all above and) 500MB/day and more! Access controls Distributed Search, Load Balancing

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System Administration of Splunk

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  1. System Administration of Splunk Take the sh out of IT.

  2. What is it? • Search and analysis engine • Google like search of your log data

  3. Versions • Free • 500MB/day • Reporting • Ad-hoc search • Enterprise (all above and) • 500MB/day and more! • Access controls • Distributed Search, Load Balancing • Monitoring & Alerting

  4. OS Supported • Windows (32 & 64-bit) • Linux • Solaris • OSX • FreeBSD • AIX • HP-UX

  5. Data Sources

  6. Two parts of Splunk • Splunkd • Does all the heavy lifting. • Indexes all files • Controls Access to data • Core component • SplunkWeb • User interface to the data • CherryPY web server

  7. Two types of forwarder • Normal Forwarding • Lightweight Forwarding • Only difference is Lightweight disables SplunkWeb

  8. Setup 1Single Server • Server 1 • Install Splunkd and SplunkWeb

  9. Configuration of Server 1 • Via WebGUI under Manager tab • Add Receiver Port to enable forwarders

  10. Setup 2Forwarder Setup (most common) • Server1 • Install Splunkd and SplunkWeb • ServerX • Install Splunkd

  11. Configuration of ServerX • Via inputs.conf file and install script • Or CLI • Splunk add forward-server server1:9500 –auth admin:changeme (or ServerY if using a proxy type forwarding system) • Splunk add monitor E:\logs\W3SVC259463726 –index=SaaSIndex1 [default] host = ServerX [WinEventLog:Security] index = SaaSIndex1 disabled = 0 start_from = oldest current_only = 0 evt_resolve_ad_obj = 1 checkpointInterval = 5 [monitor://E:\logs\W3SVC259463726] _blacklist=(archive) disabled = false index = SaaSIndex1 SPLUNK\etc\system\local\inputs.conf

  12. Setup 3Proxy Forwarder • Server 1 • Install Splunkd and SplunkWeb • ServerX • Install Splunkd • ServerY • Install Splunkd

  13. Configuration of ServerY • Same as other server for local log file indexing • Need to setup to proxy traffic [pipeline:tcp] disabled = true [pipeline:udp] disabled = false SPLUNK\etc\apps\SplunkLightForwarder\local\default-mode.conf

  14. Script to install on windows @echo off cls echo ========================== echo Installation started echo ========================== setlocal IF "%PROCESSOR_ARCHITECTURE%" == "AMD64" goto b64 IF "%PROCESSOR_ARCHITEW6432%" == "AMD64" goto b64 :b32 set SPLUNK_MSI=E:\Splunk\splunk-4.0.9-74233-x86-release.msi goto endb6432 :b64 set SPLUNK_MSI=E:\Splunk\splunk-4.0.9-74233-x64-release.msi exit :endb6432 set LOC=%ProgramFiles%\Splunk msiexec.exe /i "%SPLUNK_MSI%" INSTALLDIR="%LOC%" LAUNCHSPLUNK=0 SPLUNK_APP="" AUTOSTARTSERVICE=1 /QUIET xcopy etc "%LOC%\etc" /s /f /y pushd "%LOC%\bin\" splunk clean eventdata sample -f move "%LOC%\etc\splunk-forwarder.license" "%LOC%\etc\splunk.license" splunk restart splunk add index saas_dev -auth admin:changeme splunk add index saas_admin -auth admin:changeme splunk enable app SplunkLightForwarder -auth admin:changeme splunk add forward-server server1.mydomain.com:9500 -auth admin:changeme splunk stop

  15. Key Things to Remember! • Never modify files in the default directories • When using critical network links between sites use the limits.conf file to restrict Splunk • If you don’t know how something is working check the splunk site. Lots of great articles

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