I just want to share about the incident that happened on our VMware vSphere environment last week. In our environment, we have mix of windows and Redhat Linux guest operating systems that are running on VMware ESXi . One of the Redhat Linux server rebooted automatically and the root cause was that some one send […]
How to recover VMware ESXi root password ?
We should not lose the superuser account on any operating system especially on VMware ESXi.There may be a chance of loosing root password due to system administrator careless or defective keyboard. If you forgot root password of ESXi host ,then there is no way to recover it .VMware does not provide utility or methods to recover […]
How to use VisualEsxtop on Vsphere Environment ?
VisualEsxtop is an enhanced version of esxtop which gives you wonderful view of the performance statics of esxi hosts. VisualEsxtop can also be connected to vCenter server to reach the ESXi hosts if esxi hosts not directly reachable from your laptop.(port 443). Visual Esxtop allows flexible counter selection and filtering the data. You can also […]
How to generate crashdump of VMware Guests using snapshot ?
Root cause analysis is one of the toughest job.If its come to operating system, We mostly engage the Operating system vendors to find the root cause by analyzing the system logs and crashdump.The system logs will not alone help you to identify the root cause all the time and you need crashdump very badly. How the […]
Solaris Guests on VMware ESXI – Industry’s Best Practice
VMware ESXi servers transform datacenters into scalable and aggregated infrastructure along with vCenter Server. VMware provides platform to use the various services on single physical node.For an example,We can have different Linux flavours,Solaris x86 and windows operating systems on same box as virtual guests using VMware vSphere . As we all know Oracle SUN SPARC […]
Openssl Heartbleed bug on Solaris and Linux
Most of the system administrators and developers are re-directed to fix the openssl’s most threatening bug which is named as heartbleed .Two years ago , openssl has added new extension called heartbeat. Heartbeat actually keep the session alive for a bit ,so that communication will not be broken.Where as in typical SSL, connection will be […]
Heartbleed vulnerability on VMware ESXI 5.5 and Vcenter 5.5
Openssl is an opensource software which is widely used for implementing the transport layer security like SSL and TSL. Openssl provides a cryptographic functions and lot of other functions. Almost two years ago ,there is new function injected to openssl version 1.0.1 which is called heartbeat. What the heartbeat protocol does on openssl ? Heartbeat keep […]
How to Migrate solaris 10 zones to solaris 11 as branded zone ? V2V
If you are planning to move the Solaris 10 zones to Solaris 11 global zones, this step by step procedure will help you. As you know there is no direct method to upgrade the Solaris 10 to Solaris 11, most of the clients would like to run their existing Solaris 10 zones as branded zone […]
How to migrate solaris 10 global zone into solaris 11 ? P2V
In upcoming days,definitely you need to migrate the solaris 10 physical servers as a local zone in solaris 11 global zone if you want to continue to use solaris 10 operating system.These kind of situation rasie due to application incompatibility with high version of operating systems.So you may need to stick with older version of […]
How to install solaris 10 branded zone on solaris 11?
Oracle Solaris 10 allows you to create a Solaris 9 and Solaris 8 as branded zone on SPARC environment and not supported on x86.But oracle soalris 11 allows you to create Solaris 10 as a branded zone on both SPARC and X86 environments.For your information Solaris 9 and Solaris 8 branded zones are not supported […]