geekmungus

The ramblings of a computer geek.

A repository of information that i've found from my experience, anything interesting I find i'll post up here so that someone else might find it useful!

My posts will be classified by subject area on the left hand column, select the subject area or search the site using the "Search this site" button at the top right. The most recent posts are listed for each topic area below, hope you find something of help!

VMWare

Can't unmount an NFS datastore from a ESXi host PROBLEMAs part of a storage replacement programme, we had migrated all our VMs off the NFS datastore. When attempting to unmount the datastore from the host(s) we where ...
Posted 29 Sept 2017, 03:53 by Tristan Self
vMOTION (including Storage vMOTION) Fails Migrating from ESXi 5.5 to ESXi 6.0 U1 When attempting to migrate a VM from VMware ESXi 5.5. to ESXi 6.0 U1 you may experience problems, this does not affect all VMs only some and they ...
Posted 25 May 2017, 06:44 by Tristan Self
Ping from a specific VMKernel Port to test Connectivity If you need to test connectivity between two VMKernel ports VMK's you can use the following command:# vmkping -I vmk2 <Destination IP>If you have seperate IP stacks for ...
Posted 28 Nov 2016, 01:37 by Tristan Self
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 ...
Posted 22 Aug 2016, 12:05 by Tristan Self
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 ...
Posted 19 May 2016, 01:53 by Tristan Self

Showing posts 1 - 5 of 25. View more »

Microsoft Windows

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 ...
Posted 20 Jan 2016, 01:20 by Tristan Self
Copy files within a directory structure to another directory, leaving the directories behind I had an interesting request, how to move a load of PDF files from one directory structure to another but leaving behind that directory structure so all the files end ...
Posted 5 Aug 2015, 03:22 by Tristan Self
Create a SSL CSR from Command Line with Subject Alternate Name To create a CSR and include not only a CN (Common Name) but also a SAN(s) too, you can use the following process.1. Firstly create a text file ...
Posted 16 Jun 2015, 07:09 by Tristan Self
Remove licence from Office 365 user In our case, we were needing to remove some licences from some users, as we had an educational licence, the names of the service plans and licenses were a bit ...
Posted 27 May 2015, 01:08 by Tristan Self
Backup Pcounter balances for export to another system So you are moving from Pcounter to another printing system, but you want to export your users balances to export them to another system.To do this find the account ...
Posted 26 May 2015, 07:24 by Tristan Self

Showing posts 1 - 5 of 49. View more »

Linux and Nagios

Storing Credentials for Scripts Outside of Version Control (Environment Variables Example) So you have a Python script (for example), and you need to store some access credentials for an API it accesses (for example), now you could put the username and ...
Posted 5 Sept 2020, 00:48 by Tristan Self
Using check_http to Monitor Cloudflare Websites If you try to monitor a cloudflare fronted website with NagiosXI check_http you may get this:[root@wtgc-nagios-01 libexec]# ./check_http -H www.mysite.com -SHTTP ...
Posted 14 Aug 2020, 01:26 by Tristan Self
MicroK8s (Kubernetes) - Raspberry Pi Ubuntu Linux Basic Setup Guide - Part 4 (Image Repositories) https://microk8s.io/docs/registry-imagesSo images. A container is based on an image. You can pull these images in from the outside world, e.g. from a Public ...
Posted 6 Aug 2020, 14:13 by Tristan Self
MicroK8s (Kubernetes) - Raspberry Pi Ubuntu Linux Basic Setup Guide - Part 3 (Further Tasks) Well Part 2 was very long, so lets have a shorter one and cover how you can adjust your application on the fly and add the other worker nodes to ...
Posted 6 Aug 2020, 13:56 by Tristan Self
MicroK8s (Kubernetes) - Raspberry Pi Ubuntu Linux Basic Setup Guide - Part 2 (Build Your Own Image and Deploy It) Log onto your master node via SSH.We're going to build an image and then deploy it, so as a developer you'd probably be developing on your own ...
Posted 6 Aug 2020, 13:48 by Tristan Self

Showing posts 1 - 5 of 32. View more »

Microsoft DPM

Dealing with "Suspect Tapes" in Microsoft DPM 2012 R2 Sometimes a tape will be marked as suspect, seemingly for no reason. To resolve this you need to do the follow these instructions to first identify the MediaID of the ...
Posted 27 Apr 2015, 00:25 by Tristan Self
Dell 6Gbps SAS HBA - Adapter(s) Disabled by User Upon booting the Dell PowerEdge R720 server with two Dell 6Gbps SAS HBAs that are installed and connected to a two drive Dell PowerVault TL4000 I got this error message ...
Posted 5 Sept 2014, 00:39 by Tristan Self
Microsoft DPM 2012 R2 Reporting Services Doesn't Work This was an issue when trying to setup a scheduled job in DPM, you can run reports but you can't set an automatic report.Platform:System Center Data Protection ...
Posted 26 Aug 2014, 05:37 by Tristan Self
DPM Reporting Broken after an Upgrade to New Hardware PROBLEM:You upgraded DPM after the upgrade you can click to run any reports in "Reporting" within the DPM console and you get an error like the following:Cannot open ...
Posted 9 Jan 2014, 10:21 by Tristan Self
After Upgrading to DPM 2012 SP1 SQL Maintenance Tasks are Inaccessible PROBLEM:Using Microsoft DPM 2012 SP1 with the locally installed SQL 2008 R2 SP2 instance (i.e. the one that DPM installs) once installed, you can't get into the ...
Posted 9 Jan 2014, 10:17 by Tristan Self

Showing posts 1 - 5 of 13. View more »

Cisco and Networking

Kemp Load Master and Palo Alto Firewall - Random Packet Drops and Disconnections We had a rather irritating issue whereby we were seeing intermittent packet drops and connection failures on our Kemp Load Master.The Kemp Load Master sat inbetween a Palo Alto ...
Posted 18 Jul 2020, 04:21 by Tristan Self
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 ...
Posted 19 Aug 2016, 07:46 by Tristan Self
Cisco ASA Firewall - DMZ to Inside Access On a Cisco ASA firewall you will probably want to use the DMZ for servers that are web facing, and also restrict/deny any access they have to the internal ...
Posted 15 Jul 2015, 09:26 by Tristan Self
Cisco ASA NAT Exemption (post version 8.3) The changes to the ASA IOS post version 8.3 changes the way that NAT works. NAT Exemption is normally used to disable translation for certain addresses e.g. for ...
Posted 13 Jul 2015, 08:52 by Tristan Self
Cisco ASA Static NAT (pre version 8.3) Pre version 8.3 to statically NAT an internal host to an external IP address you would use the following: static (inside,outside) 212.219.63.195 192.168.100 ...
Posted 13 Jul 2015, 06:35 by Tristan Self

Showing posts 1 - 5 of 22. View more »

General IT

Running BT Analogue Telephone Line via Structured CAT5e Network Cabling (RJ45) From time to time you need to run normal POTS telephone over structured cabling, the main issue is that in the UK the pin outs can be different from the ...
Posted 26 Oct 2016, 04:31 by Tristan Self
SharePoint 2013 - Fix graphical glitch on timeline We had a weird graphical glitch on the timeline webpart on our SharePoint installation, we couldn't figure out what was happening. Until that is we checked out the element ...
Posted 25 Jun 2015, 02:15 by Tristan Self
SharePoint 2013 - Hide Horizontal Scrollbar on Front Page On our Microsoft SharePoint 2013 home page, we had a horizontal scrollbar appear.What seemed to be happening was within the master CSS file was that the "s4-workspace" was ...
Posted 23 Jun 2015, 07:45 by Tristan Self
Hide Search Box on top bar of SharePoint 2013 Front Page So you have the box at the top, this confuses our users, so we need to remove it. To do this you can just use a simple script on the ...
Posted 23 Jun 2015, 01:57 by Tristan Self
Change size of Search Box Web Part - SharePoint 2013 You want to change the size of the search box web part, this is fairly straight forward when you know how.1. Firstly get the name/ID of the search ...
Posted 22 Jun 2015, 03:01 by Tristan Self

Showing posts 1 - 5 of 34. View more »

Microsoft SQL and Databases

Shrink Microsoft SQL Database Transaction Logs PROBLEM: Your SQL transaction log has grown to be really big, this might be because a load of data was added, or your backup procedures were failing to truncate the ...
Posted 7 Jan 2014, 06:01 by Tristan Self
Microsoft SQL 2000 SP4 In-Place Upgrade to SQL 2005 - Upgrade Advisor Error We had a very old server running SQL 2000 SP4 that we needed to upgrade to SQL 2005, as we didn't have the staff resource available for a complete ...
Posted 13 Jan 2012, 00:39 by Tristan Self
Oracle TNS Listener Errors I recently had to resolve some TNS listener errors on a Oracle database server. It was Oracle 11g running on Microsoft Windows 2003 Server R2 SP2 32bit.Basically the problem ...
Posted 12 Jun 2011, 05:18 by Tristan Self
Oracle, VMWare and Why You Should Add Indexes to Improve Performance I recently completed a migration of an 8 year old Oracle server to a nice new VM running on VMware Vpshere 4.1, this went without too many problems. However ...
Posted 12 Jun 2011, 05:17 by Tristan Self

Showing posts 1 - 4 of 4. View more »

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