Category Archives: IT Tips

Install certificate for Unifi Controller

1. Request certificate. I saved my certificate as unifi2020.crt and unifi2020.key
2. Replace certificate on unifi controller

3. Restart unifi

expand AWS EC2 FreeBSD ZFS disk

For testing purpose, I setup a Freebsd instance on AWS, which is using zfs on root.
And then I add 10G disk space to the root volume. Even though I enabled auto-expand for zroot, it seems the 10G space is not added to system. Here are the steps to expand the disk for zroot:

1. Reboot the server.  Even though it’s said that reboot is not necessary, I suggest to reboot the server to make sure server can recognize the new size.

2. As the disk size change, we need to fix the GPT partition table first.

3. Some documents said can use “zpool online -e” to expand the disk. As shown in above picture, the command can’t auto update GPT and assign the space to zfs partition.

4. We need to use gpart to update GPT first, then expand the zfs partition.

Customize Office 365 Home installation

I just switched from Office2019 retail to Office 365 Home edition.
And we also can’t choose which office program to install, which means by default access/outlook will be installed on my computer and OneNote will not be installed.

And I checked MS document (https://support.office.com/en-us/article/product-ids-that-are-supported-by-the-office-deployment-tool-for-click-to-run-77654e77-aaeb-4ed6-84eb-1d8b0e086590), it seems we can also use Office Deployment Tool to customize Office 365 Home/Personal installation.

1, go to https://config.office.com to generate a configuration file for installation. For Office Suites, you can choose Office365 Proplus, and we’ll change it after the configuration file is generated.
2, select the Apps you want to install.
3. For the update channel, select “Monthly”
4. Answer the rest questions
5. Click export to download the XML file.
6. Open the XML file, change prodouctID from O365ProPlusRetail to O365HomePremRetail or O365PersonalRetail.
7. Download office deployment tool from https://www.microsoft.com/en-us/download/details.aspx?id=49117
8, open command line, run

Done!

And below are my configuration files, you can use it if you want.

fix new iphone can’t sync with outlook.com issue

It seems Microsoft is encourage people to use the app outlook. The app is good, but I still need to sync the contact between my iphone and outlook to get my contacts number.
Spent some time to check this issue, here is the fix:

Disable Firefox 65+ urlbar/address bar suggestion popups

According to https://bugzilla.mozilla.org/show_bug.cgi?id=1502392, browser.urlbar.autocomplete.enabled pref is no more used in Firefox 65.
So you can’t set below pref to false to disable the annoying Firefox address bar/url bar popups.

The only way to disable the popup is to use userChrome.css to control Firefox User interface.
Add below line to userChrome.css, done.