Posts

2022 Jan - Hypervisor migration

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 2022 Jan - Hypervisor migration Virtual machine migration processing I prepared a new server to hold around 10 Virtual Machines (VMs) in Dec 2021.  Spend around a week to move all the VMs over.  Sadly, the machine freeze when there are high load of file sync activities. Tested 2 times, and when the Machine freeze, all VMs will instantly died.  This is when all your colleague will start attacking and chasing you. So, 1 week move to new-server, and 1 week to move back to old server.  So can re-setup the new server and do some load pressure test. This is no fun, as after months of effort, ppl will think that you have done nothing as we are still at the same place as 2021 Nov.  So sad ..  Push push push ...  #### 3 hours later After all VMs moved out .. load test show no error.  God, am dying .. help me .. 

2022 Jan - Nextcloud - Changing User password as admin

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2022 Jan - Nextcloud - Changing User password as admin This is part of administration routine. When a user forget his/her password, instead of using forget password (eg. Dropbox, Google Drive ), admin can reset the password directly. Go to the web portal of your nextcloud, or dashboard Click on your profile icon, and select [ Users ]

2022 Jan - Hypervisor crashed

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 2022 Jan - Hypervisor crashed and VMs failed to boot zfs scrubbing for error check Server freeze while I am trying to migrate data from one VM to another VM.  In the end, all VMs got affected, so I have did a forced reboot. And then, worst nightmare came with server getting a slow boot detecting virtual partitions.  Oh god, come on ... it is 7pm !!! Waited for 10 mins and it is still not moving, thus did a hard reboot again, and it hang in the same place again.  Thus, I went for a quick dinner first. When am back to the office, Hypervisor was up .. but most VMs are dead!  Oh dear, I still need to sleep.  Spend 15 mins to notice VM's partition is missing.  Do I did a partition recovery for each of the VM. Finally managed go leave office around 9pm, but reporting time for next day wont change.  So much fun doing IT. Thus today need to go thru the server to see what causes the server to freeze, and see if need to migrate all VMs to another server. ### Next day After going thru the lo

Add Custom Map to Your Google Map

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 Add Custom Map to Your Google Map - Singapore PCN Map Google Map have change and the previous My Places wont work so smoothly anymore, but they did new a way to allow integration. Today, we are going to get search for a custom map in Google-MyMaps and add the layer into your google map, so you can better plan your route. . Go google search and search [ singapore pcn my maps ] . or just click on this link [ New PCN on Bikes - Google My Maps ] . Click on the star to allow this map to show over your google map . You may remove all other path or icon which you dont wish to see Google Map Now head over to your google map and click on the menu icon And select [ Your places ] Select [ New PCN on Bikes ] and you are done. Now you can see the custom map over your Google-Map Using the Custom Map over your mobile Google Map Personally I feel this is good. As you will be able to see your current live location to determine your action over the custom map. To call out your custom map, launch your

Harddisk failure

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Harddisk failure I have encountered a harddisk failure today.  It is a 3TB harddisk and now it is being detected as 4GB. All data are gone. I've open up the harddisk and this is what I found.  There is a ring of scratch mark around the platter. The scratch marks are created by read/write head scratching on the of the data platter. It would be a nightmare if you are running on a single harddisk system. I am lucky enough that I had planned for a raid system.  I replaced the damaged harddisk, run a few commands and the system is working good again.  The replacement harddisk cost me around S$150, but it is still better than to lose my all my files. Sending the harddisk for data-recovery would cost more, I would estimate that it would cost me near S$2000 to recover 90% of my data. It is always good to have a backup solution for your files.

Internet Explorer (IE) for Windows 11 ?

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 Internet Explorer (IE) for Windows 11 ? Upgraded to Windows 11 and lost your Internet explorer ? You may have some old application that still need IE to function properly and after recent upgrade to Windows 11, you found that IE is missing. Sadly, IE didn't make it to the new Operating System and is disabled. But you can still use [ IE mode on Microsoft Edge ]. launch Microsoft Edge on Windows 10 click the Settings and More on the top-right corner select Settings click on Default browser location [ Internet Explorer compatibility ] turn on the  [ Allow sites to be reloaded in Internet Explorer mode ]

Irfanview - Using irfanview to scan document

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 Irfanview - Using irfanview to scan document Irfanview allow you to connect to the scanner directly and scan the picture directly into the editor for cropping and simple editing.  It is pretty amazing that a small editor comes with some much features. I do have to agree that it would be even better if I can have a few layers to play with, but there are always work around to get the things working. To scan a image directly into irfranview, you can use the following steps. You will need to get your scanner installed, so irfanview can know how to source for the image. . File --> Acquire. (Ctrl+Shift+A) I am so used to the software, that short-cut key is always my preference. After scanning your image, you can call upon the Paint Dialog for cropping and editing. You may use F12, or From menu --> Edit -> Show Paint Dialog From the Paint Dialog, you can see there are plenty of tools for you the annotate on the image. This is only one of the many features that make this a great desk