VMware HA agent has an error
Jun1
I’ve been experience some problem with VMWare HA. The problem can be considered as weird since I don’t have any problem to add ESX node to the cluster except, all hosts with status “connect” all the time but once a while, some of the node will getting “HA agent has an error” and few minutes later it’s running back to normal. I did some research but mostly people on the Internet suggest to move all the VMs out, put the host in “Maintenance Mode” and reboot it, or reinstall the host, which is very inconvenient.
Below are the steps taken to resolve the issue
Solution : Uninstall & reinstall vpxa from problematic ESX host
First, let’s get the name of the running module
$rpm -qa | grep vpxa
Now we remove it
$service mgmt-vmware stop $/etc/init.d/vmware-vpxa stop $rpm -e [MODULE NAME ABOVE]
Then check again to make sure it’s gone
$rpm -qa | grep vpxa <----This should be empty
After that we restart the service console
$service mgmt-vmware restart
Now let’s vCenter reconfigure HA by doing the following
Disconnect ESX host from cluster Then remove ESX host from cluster Add ESX host to the cluster & reconfigure HA
The problem should be gone now.
Sync folders with Microsoft Robocopy
Jun0
Lets say your source files are in Server1 and you want to get those files out to Server2, Server3, and Server4.
Your source files are in a share called Source on Server1.
Each one of your destination servers has the target directory shared out as Target.
Robocopy \\Server1\Source \\Server2\Destination /MIR /LOG+:Server2.log /NP Robocopy \\Server1\Source \\Server3\Destination /MIR /LOG+:Server3.log /NP Robocopy \\Server1\Source \\Server4\Destination /MIR /LOG+:Server4.log /NP
What this script does is it syncs the source folder (and all subdirectories) with the destination folder ( on all subdirectories)
So if you add a file to the source folder the next time the script is run it will add that file to all the destination folders.
If you delete a file to the source folder the next time the script is run it will delete that file from all the destination folders.
So your source folder becomes your master copy.
The /log switch creates a log file in the same directory as your script which records each transaction. The /NP switch hides the progress bar.
You can run the script manually or schedule it using the Windows scheduler.
Download the software here
Cloud Computing Explained
Jun1
I found this video on Youtube. They did an awesome job on explaining cloud computing. Enjoy!
A great article about iSCSI
Jun0
VMWare has done a great job on creating this article. You can find it here http://www.vmware.com/files/pdf/iSCSI_design_deploy.pdf
VCB: I forgot all about “automount disable” what now?
May2
Before installing VCB and connecting the proxy host to the SAN you should disable automount via diskpart(cmd, diskpart, automount disable, automount scrub). When you don’t disable automount Windows will signature all “incoming” disks. When this happens the VMware hosts will not recognize the VMFS volumes anymore. But fortunately you can re-label the luns as VMFS.
Check with “fdisk -lu” what the current ID value is of the volumes, it’s “SFS” if Windows wrecked it. Write all the devices down and label them again as VMFS:
fdisk /dev/sd? (? the letter for that specific volume)
p d n p 1 default t fb X b 1 128 (disk alignment, check your SAN manual for the correct value, 128 is correct in most cases…) W
Now rescan the HBA devices, esxcfg-rescan vmhba0 etc etc.
10 minutes Regular Expression
Dec1
At the office, nothing much to do today so I played with the regular expression, here are a few fomulars I just created for Cisco gears
show processes cpu | exclude 0\.00\%.*0\.00\%.*\0\.00\% - Shows you all the running processes, excluded the quite ones
show int status | include connected.*_4[135] - Show all ports which connected on vlan 41, 43, 45
show int status | include connected.*_4[1-5] - Show all ports which connected on vlan 41 to 45
show int status | include connected.*_4[1-57-9] - Show all connected port of vlan 41, 42, 43, 44, 45, 47, 48, 49 ( ex. [1-3a-c]: 1 to 3 or a to c )
show int status | include connected.*_4[^12345] - Show all connected port of vlan 40, 46, 47, 48, 49 ( ex. [^123]: Anything but 1, 2 , 3 )
show int status | include connected.*(_4[12345]|_32) - Show all connected port of vlan 41, 42, 43, 44, 45 and 32 ( ex. [A|B] : A or B )
That should help you get the idea how to filter out the show command results