Ken's Tech Note

The following RegEx removes the query string part of an URL. This will be useful to find the aggregate traffic of a page. Custom Filter -> Advanced Extract A -> Request URI -> [.*?]\? Output $A1

In an unanticipated request I have to move a WordPress installation running on a LAMP stack to an Azure instance running WIMP (Windows, IIS, MySQL PHP). In the Azure settings, MySQL is running as a cloud-based database service. BackupBuddy has been a reliable tool for single site migration and its beta has support for multi-site migration which is sufficiently reliable. But moving from Linux to Windows is another story. The alternative is the free Duplicator - which I only come to know of having contacting WPML.org technical support for another reason. The key steps: 1) Change permalink back to default 2) Deactivate / Delete any unused plug-ins 3) Backup using Duplicator 4) Download the installer.php and the .zip archive 5) Upload installer.php and the unzipped files to Windows server This pre-unzip is necessary so that the php script does not have to tackle the unzip which resulted in a timeout in our scenario. And I have no access to Windows RDS to change the php.ini co...

Starting to migrate servers to AWS. The AWS Linux AMI has the AWS CLI pre-installed and setting up is pretty easy. AWS Linux AMI is CentOS-based and has different configurations/settings with Debian-based Ubuntu. To install the AWS CLI, follow these steps: SSH with username ubuntu and the private key file apt - get install python - pip pip install awscli Then config awscli with command: aws configure At this point, you will be prompted to enter the Access Key and Secret Key. It should be created in the IAM module. The keys should be re-generated from time-to-time for security purpose. Remember to attach a policy for access. By default the IAM created will have no policy attached. Two files are created to store the config enter under the user's directory in .aws directory.

Recently trying to setup a mail re-direct (or a cc) to an external e-mail address. It is important to first determine if you are running courier or dovecot because the syntax is different. Under dovecot, it should be in sieve syntax. Therefore, under ISPConfig3 -> Email -> Email Mailbox -> Custom Rules, enter: redirect "mail@example.com"; Ensure it is double straight quotes and semi-colon at the end. Wait until the update is done (usually a few minutes) via the cron jobs of ISPConfig3 updating the /var/vmail/domain/username/.sieve

Linux 建立使用 Swap file Linux 要建立 Swap file 的步驟如下： (下述是建立 512M 的 swap，一次讀寫1024bytes，路徑 /tmp、檔名皆可隨意更改) sudo su – # 先切成 root 下述操作比較方便 dd if=/dev/zero of=/tmp/swap-filename bs=1024 count=524288 # 1024 * 512M = 524288 block size chown root:root /tmp/swap-filename chmod 0600 /tmp/swap-filename mkswap /tmp/swap-filename swapon /tmp/swap-filename 臨時的到此就可以使用了 若需要長期使用，在加入下述步驟： vim /etc/fstab /tmp/swap-filename none swap sw 0 0 查看目前 swap 有哪些：swapon - Source: http://blog.longwin.com.tw/2015/12/liux-add-swap-file-2015/

The Kindle Fire HD 7" has one of the best screens for enjoying multimedia content and reading. The stock OS did not have much value compared to third party ROMs. I have been using third party ROM and has settled with official CM11 for quite some time (about a year) until last week. xda Forum contributor faZevoLv has released an unofficial OmniROM running on Lollipop 5.1 - which installed smoothly with the latest GApps found. (I tried CM12 beta, too. I installed but it gave a series of FC upon booting up. I believe it might have to do with the version of GApps but did not research further on the correct version). The user interface is very responsive, animation is quick and I have experienced no lag. Make sure you have a second bootloader before installing OmniROM. http://forum.xda-developers.com/kindle-fire-hd/7-development/rom-omnirom-android-5-1-t3052050

Trying a new social network platform for enterprise. Humhub is a new social platform and during installation, it has some compatibility issue with ISPConfig3. The error was related to open_basedir - open_basedir restriction in effect. The discussion can be found at https://github.com/humhub/humhub/issues/129 Proposed solution: apt-get install zendframework-bin mkdir /usr/share/pear Then under ISPConfig3: ISPConfig -> Sites - > Select relevant site hosting humhub -> Options Under PHP open_basedir, add ":/usr/share/pear" Restart apache2 for the settings to become effective. Installation is successful.