Author: Ramdev

14

Network Physical Connectivity Check for Solaris and Linux

Network connectivity checks For the server without OS  ( just Racked hardware and powered up)   For X86 Hardware We have to make LED checks – like when we disconnect the cable at the server side / switch side the Link / Act LEDs should lit...

11

Solaris Troubleshooting : Using Truss to Identify the Signals sending to a Process

One of the Sample Issue: Customer frequently sees in /var/adm/messages syslogd: going down on signal 15 which indicates that the system rebooted from a normal shutdown or init 6, yet no reboot has actually occurred and uptime indicates that no reboot occurred. If you stop the...

1

Sysadmin BestPractices: Configuring loghost on Sun Fire 3800, 4800, 4900, 6800 and E6900

It is considered a ‘Best Practice’ to configure a ‘loghost’s for each server and production domain. A ‘Loghost’ on a Solaris platform can permanently save messages that are logged in the System Controller’s NVRAM buffer. This will insure that they are not lost due to either a...

5

Understanding Linux Hugepages

Before we discuss about Huge pages, we should revise some of the basic concepts about Operating system memory management. Operating systems basically deals with two types of memory for its operations one is Physical memory ( actual Physical RAM) and the second is Virtual memory ( combination of Physical...

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