I use Ahsay to do a file level backup on a Linux (Centos 6.6) machine. The scheduled backups suddenly started being missed. The following error appeared when I ran the backup manually. # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x0000003337e7f5bf, pid=2150, tid=140190110197504 # Read More…
Author: Jordansphere
I currently work for an ISP on the South coast as a Senior Engineer. I mainly spend my time maintaining the Cloud. CCNA, VCP4/5, VCP-Cloud
Add a Read-Only User to VCSA
Scenario: I wanted to add a user with read-only privileges to the vcenter server appliance in order to run the Dell D-Pack 1) Firstly SSH to the VCSA Then add the user jord-vcenter:~ # useradd delldpack Set a password for the user jord-vcenter:~ # passwd delldpack Changing password for delldpack. New UNIX password: BAD PASSWORD: is Read More…
Hostname Configuration Error – cPanel DNS Only
One of our cPanel DNS Only servers was throwing up the below error: Hostname Configuration Error: ns9.jordansphere.co.uk Your WHM server is configured with IP address xxx.xxx.xxx.xxx and has a misconfigured hostname. This misconfiguration can cause some services on your server to not restart properly. The cause of your misconfiguration is: WHM has detected a manual Read More…
Script to Reset CBT on a Single VM in VMware
I wanted to reset CBT (Change Block Tracking) on a single VM to due to the VMware bug (KB2090639) which affects any VMs that have expanded disks over 128GB. Using this script over the manual option prevents the restart of the VM as the modification is performed online using a Power CLI script. In the below example the Read More…
Script to Output to CSV and Email Disk Sizes of VMs
I wanted to get a list of all disk sizes, insert this into a .csv file then email the file to a couple of recipients. Using Powershell, I wanted to get a list of all the production severs from a vCenter 5.5 server which were all located in a "Production" folder. Add-PSSnapin VMware.VimAutomation.Core Connect-VIServer -Server Read More…
Convert To Template Grayed out after Upgrade to vSphere 5.5
I recently upgraded a vsphere deployment from 5.1 to 5.5. I then wanted to upgrade the templates to the new VM HW and VM Tools. Upon attempting this the convert to virtual machine option was grayed out. To fix this we simply need to remove the template from the inventory and re-add it. To add Read More…
Features in vSphere Traditional Client Versus Web Client in 5.5
As we all know by now VMware are steering end users away from the traditional vSphere client and towards the web client. Below is a list of features that the other doesn't support. Traditional vSphere Client – Resource maps – Update Manager. Users are able to scan hosts and attach baselines in the web client Read More…
Upgrading vCloud Director ESXi Hosts
In my environment to fully upgrade to vcloud suite 5.5 I would have to use the following order: A) vCloud Director B) vCNS (vShield Manager) C) vCenter D) ESXi hosts E) vShield Edge In this post I will be discussing the process of upgrading the ESXi hosts from 5.1 to 5.5 1) In vCloud Read More…
Single LUN Inactive on One Host
Scenario: I have 7 hosts connecting to an Equallogic Group (2 x 6000s). There are 3 LUNs visible to each host and locked down to specific ISCI IP range. ( eg 172.17.16.0/24). All 6 hosts could see all 3 luns but one 1 host could only see 2 of the 3 LUNs available. The protocol is Read More…
HA VM Monitoring for Single VM in vSphere
I have HA VM monitoring turned off on a specific cluster in a vSphere 5.1 environment. However, I wanted to ensure a certain VM was monitored to fit in line with an SLA. The cluster settings were disabled as expected. To enable VM monitoring please ensure VM tools are installed and up to date. Read More…
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