1. All services in Red Hat can use TCP Wrappers. True or False? 1a. False. A service needs to have support for TCP Wrappers to be able to use it. 2. The firewall service is disabled by default. True or False? 2a. False. The firewall service...
The idea behind running BIND in a chroot jail is to limit the amount of access any malicious individual could gain by exploiting vulnerabilities in BIND. It is for the same reason that we run BIND as a non-root user. This should be considered as a...
In most cases, this warning occurs at the OBP “ok” prompt if the power-up initialization (right after the banner was displayed) was aborted. Usually,this is done by using the Stop-A keystroke (XIR Reset).If after such an occurrence “boot” command is executed, the system displays the following...
Hosts remotely mount other hosts, often times via routers, bridges with straight NFS mounts or with automount. Sometimes, the process accessing those remote hosts just hangs forever or gets the message: NFS SERVER <servername> NOT RESPONDING ..sometimes followed by NFS SERVER <servername> OK
This post will give you give you a quick glance of some useful AIX command that I usually keep handy for my own reference. I am not a regular AIX admin but at the same time I don’t want to be panic If I have to...
To disable the agent on a system, you must first change the VCS service group to an OFFLINE state. You can stop the application completely, or switch the service group to another system. To disable the agent Determine if the service group is online. At...
Introduction to Virtual Disks virtual disk contains two components: the virtual disk itself as it appears in a domain guest, and the virtual disk backend, which is where data is stored and where virtual I/O ends up. The virtual disk backend is exported from a...
In our earlier tutorial, we discussed ‘Virtualization in Linux using KVM‘ & created a virtual machine using graphical user interface. In this tutorial, we will learn to create & manage virtual machines using Command line interface (CLI). The CLI tool to create new machine is called...
[mlw_quizmaster quiz=34]
System Controller battery (BATTERY at SC/BAT/V_BAT has exceeded low warning) failure in T-series servers. Many a times you will get a hardware error in /var/adm/messages (or at ALOM/LOM prompt, console messages) for SC battery failure, In this post I will explain the battery replacement procedure along...
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