Tagged: solaisadmin

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...

4

Scripting : SVM Root Mirroring for SOLARIS

Here I am posting the script that mirrors primary root disk to selected mirror disk ( of same geometry and size ) . And script will automatically perform the mirror attach operations that required  before and after the server reboot.  The script  will perform following operations,...

43

Working with Solaris Server Consoles using LOM/ ILOM/ ALOM/ ELOM/ RSC

Access Server’s OS Console from the LOM service Processor:   Server Models : SunFire V100/V120/V1280/E2900 and Netra 1280/1290 You can use below command to navigate between Server OS console and LOM port: connecting to console from LOM prompt: sc/lom>console Returning to LOM from the Server console...

5

Solaris Troubleshooting : Disk i/o Performance Issues

This post is to highlight some of the steps needed to diagnose if an issue is in fact a disk performance issue or not.  And if it is, what data will be collected to help diagnose the issue. Please note that performance in general is not an...

48

Configuring Solaris 10 host with SAN storage ( EMC Clariion )

Configuring SAN storage is usual task of system administration in Enterprise network environment. And Of course  there is lot of  engineering activity involved in certifying a process , that defines the guidelines on what hardware / software matrix should be used for stabled operating environment. In this...

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...

6

Solaris 10 : mpathadm vs luxadm – manage multipathing in solaris 10

Solaris Multipathing software MPXIO operate now with new arrays using other protocols like SAS or iscsi, . The old Solaris luxadm command still manage FC arrays, but mpathadm command has been developed to work on all the arrays using FC, SAS, and Iscsi connections.

5

Solaris Troubleshooting : Calculate TCP retransmission rate using netstat

This post explains you the information on the TCP retransmission measurement using netstat -s for Solaris. A system with a high retransmission rate indicates network congestion and can cause network oriented applications (like web servers) to operate slowly. Procedure to Calculate TCP retransmission rate: TCP expects acknowledgments from...

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