Solaris 10

Solaris Booting /OBP/Run-Levels/User Admins..

Understanding the booting process is important in the sense that you can get a clear idea when a system faces a booting problem if you are familiar with the booting sequence and steps involved. You can thereby isolate a booting phase and quickly resolve the issues….

 

About Telnet – FTP – TFTP

Telnet is a protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP).

 

Swap FS Creating and FS Tuning

On modern hardware with 32GB memory or more swap space is rarely used for its primary purpose. Bu Solaris has a very elegant idea of linking swap space and /tmp. In other words /tmp in Solaris is memory based filesystem and files in it disappear on reboot.  That means that it is important for Solaris administrators to understand the features of the Solaris swap. There are three major area of interest here…

 

Solaris Block Devices and Mount / Un-mounting Options

Under Solaris, one of the most involved UNIX devices to understand is the disk device file. Here are several key points that may help…

Performance issues-Solaris

If its comes to performance issue in Unix operating systems, everybody will be behind on CPU.But not all the time CPU will cause for the performance problem. Because sometimes CPU may waiting for resources like Disk I/O, Swapping ,Network.As sysadmin you should able to pin point where the problem.vmstat is very useful command to determined where it the problem…. 

Jump Start Configuration

Setup and configuration of jumpstart server & clients .Jumpstart offers a way to install Solaris using network over multiple server with similar of different configurations……….

Solaris SMF

Service management facility was first introduced in Solaris 10 for managing system and application services. This replaces the legacy init scripts and other startup scripts….

Solaris NFS Guide for Beginners

Network File System (NFS) is a protocol which allows file systems on one system to be made available on a remote system on the network. NFS works on the server-client model with server sharing the resource and client mounting it….

Solaris Crash Dump and Core Dump

Core files are just a process dump (image from physical memory) when the process terminates abnormally. These files are very important to find the root cause of process(application/DB) failure.  Normally , application/DB  need to send these core files to application vendor to fix this issue. Otherwise system administrator’s job will become hectic to perform the core file clean up all the time to prevent the root filesystem full…..

Solaris DNS Configuration

A DNS Client service is a component that resolves and caches Domain Name System (DNS) domain names. When the DNS Client service receives a request from the user or from a whatever process to resolve a DNS name that it does not contain in its cache, it queries an assigned DNS server on port 53 for an IP address…

Solaris  Multipating

Oracle Solaris Storage Multipathing MPxIO provides multipath access to storage luns by grouping together the physical paths and presenting a single logical path. MPxIO can also be referred as STMS or SCSI_VHCI due to the commands used and logical device paths created. ..

Solaris Sys Log Management

Syslog is a standard Solaris system utility and requires very little configuration.  Syslog reads and forwards system messages to appropriate log-files (ie. /var/adm/messages) and can also be configured to forward messages to users and/or other non-default log-files.

Role Based Access Control RBAC

individual users can be assigned to roles, such as system administrator, network administrator, or operator.
Roles are associated with rights profiles…..