Ubuntu, find used disk space
To easily find where your disk space is being used from the command line you can use the NCDU utilty. To run this use:
More...HP BL490c G7 Blade within a c7000 BladeSystem Chassis with Flex-10 Networking Fails after ESXi 5.5 Upgrade
After an upgrade to ESXi 5.5 from ESXi 5.1, all the networking on the host stopped working, as I had already upgraded other BL490c G7 blades with (seemingly) identical hardware but upon upgrading this one the NICS were detected but there was no connectivity through the chassis, the flex-10 to the host. All checks on […]
More...HP BladeSystem Flex 10 Ethernet Switch Configuration
Had to do a bit of configuration on an HP c7000 blade chassis the other day. There was a need to have two separate uplink pairs going to two different pairs of switches from the single chassis. I needed to provide both uplink paths to each host within the chassis (they were ESXi hosts). Here […]
More...Disable UAC in Microsoft Windows 2012 R2
If you like me, don’t want to have an admin prompt each time you want to save a file to a server you can disable UAC, by ensuring that all Administrators of the server don’t require approval to make minor changes. So if you say had a file on the C: drive you were trying […]
More...Exchange 2010 – Can’t Delete Mailbox Database
While doing some housekeeping on an Exchange 2010 server, I needed to delete a mailbox database but couldn’t getting the error shown below: PROBLEM: The mailbox database ‘Mailbox Database 2 G-L’ cannot be deleted. Mailbox Database 2 G-L Failed Error:This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, or arbitration mailboxes. To […]
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When trying to deploy an OVF using the web interface getting error: Client Integration Plug-in must be installed to enable OVF functionality
Problem: When trying to deploy an OVF using the web interface, you getting this error message below. Even when you have installed the client integration plugins it still doesn’t work. “Client Integration Plug-in must be installed to enable OVF functionality” Solution: 1. Uninstall any/all existing Vmware client integration plugins from: Control Panel->Add/Remove Programs 2. Restart […]
More...Exchange 2010 Restoration fails with: ROP Error: 0x80070057 Error: MapiExceptionInvalidParameter: Unable to modify table.
A colleague had a problem when attempting a restore a mailbox, this error was generated: Error: MapiExceptionInvalidParameter: Unable to modify table. (hr=0x80070057, ec=-2147024809) Diagnostic context: Lid: 55847 EMSMDBPOOL.EcPoolSessionDoRpc called [length=228] Lid: 43559 EMSMDBPOOL.EcPoolSessionDoRpc returned [ec=0x0][length=348][latency=15] Lid: 23226 — ROP Parse Start — Lid: 27962 ROP: ropModifyRules [65] Lid: 17082 ROP Error: 0x80070057 Lid: 27745 Lid: […]
More...VM won’t vMotion on Nutanix Cluster – Error: msg.vmk.status.VMK_BUSY
Had an issue where a VM would not migrate to another node within the Nutanix cluster, getting this error message after about 21%. To resolve this I used: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1031636 even though this is for version 4.x this worked for VMware 5.5. On the host under advanced settings change this setting: Migrate.VMotionResolveswaptype = 1 Change the […]
More...Check an SSL Certificate File in plain English
You need to verify that a file cert.pem contains the certificate you expected, to do this you can use this command to view the certificate in plain text with expiry date etc visible.
More...Using check_snmp to check if a metric is within a range or not
Sometimes a metric needs to fall between a range to be considered OK, and outside the range (i.e. above and below) for a warning, and outside that range (i.e. above and below) for a critical. So for example monitoring the input voltage into a APC UPS to ensure it is within a certain range. So […]
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