Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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SAN (Storage area Networking) for System Administrators

 In conventional IT systems, storage devices are connected to servers by means of SCSI cables. The idea behind storage networks is that these SCSI cables are replaced by a network, which is installed in addition to the existing LAN.  Server and storage devices can exchange data...

1

Solaris SVM : Grow Mirrored root under SDS / SVM

This is a step by step procedure to grow a root filesystem which is mirrored using Solstice Disksuite or Solaris Volume Manager. It is strongly recommended that a backup of the root filesystem be performed  prior to following this procedure. Also, experience with the Disksuite or Solaris Volume...

6

Cloud Computing – It's not just another buzzword, but a near future

WHAT IS CLOUD COMPUTING? Google, Yahoo, Amazon, and others have built large, purpose-built architectures to support their applications and taught the rest of the world how to do massively scalable architectures to support compute, storage, and application services. Cloud computing is about moving services, computation and/or...

0

Veritas VxVM : Fails to start after rebooting the system

Upon boot-time startup, the VERITAS Volume Manager configuration daemon vxconfigd scans all the disks and reads the private regions on the disks. It has been observed in some rare situations, where – I/Os to a disk are failing, and – there are lengthy delays before the...

2

Solaris Troubleshooting NIS : Configure Master, Slave and Client

Below procedure gives the steps to configure NIS Master Server, Slave Server and Client services in both solaris 9 and Solaris 10 Configuring NIS Master Server You must login as root. 1.  Define the NIS domainname. # domainname example-domain –> “example-domain” is the domain name.  It...

0

Solaris Troubleshooting : Identifying the network address and port number for a running process

For Solaris System Administrators It is often necessary to find out all the related processes that are using a specific network port.  There are several ways to accomplish this (lsof, pfiles, crash): Method 1: lsof examples: Ex: netstat -a shows a connection between hodware.port 36169 to...

 
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