You must have seen my earlier post about replacing faulty disk in Linux raid , however if something goes wrong with system sometimes you need to stop and delete Linux Raid array. We will go first about how we can stop linux raid array. here is sample output of status of Raid array: [root@rhel1 ~]# mdadm […]

How to replace Faulty Linux RAID disk Suppose that a disk in the RAID array failed. In that case, you need replace Faulty Linux RAID disk. You must have seen my post about creating RAID 1 array same way I have created Raid 5 array with below command, so that I can demonstrate how we can replace […]

Setting up Linux RAID 1 Configuring LINUX RAID 1 is very essential as its provides redundancy. RAID partitions allows advanced features such as redundancy and better performance. So lets describe how to implement RAID, let’s look at the different types of RAID: ■ RAID 0 (Striping) disks are grouped together to form one large drive. This offers […]

Execute commands on Multiple UNIX servers To get the output from single server we can get it very easily by just executing particular command but what if we would like execute commands on multiple UNIX servers. Use ssh to fulfill above requirement of remote execution. System Scenario: kalwa1 ip 192.168.216.130 kalwa2 ip 192.168.216.131 SSH client is […]

DNS server configuration Please select 720p HD quality in setting for better quality of the video log visualization.

You always need to think in terms of how can we secure server so that it will not be targeted by the hacker. Here is the simple trick is to restrict users in ssh configuration to secure the server. By default ssh configuration accepts all the users to the server, that’s the biggest loop hole in […]