jdeathe

# To install:
#     sudo cat grow-root.service > /etc/systemd/system/grow-root.service
#     sudo systemctl daemon-reload
#     sudo systemctl enable -f grow-root.service
#
# Start (auto disables after first successful expansion):
#     sudo systemctl start grow-root.service
#
# Debugging:
#     sudo systemctl status grow-root.service

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Jadu Continuum CMS - Readable URLs for Custom Scripts

The recommended location for custom scripts written for the Jadu CMS platform is within /public_html/site/custom_scripts/ but this can lead to long and unfriendly URLs. Here we show how to use the Readable URLs feature to create a cleaner URL structure for a simple custom script.

Installation

1. Create a new directory <install-path>/public_html/site/custom_scripts/php_version and populate it with the following files:

• htaccess_readable

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Keybase proof

I hereby claim:

• I am jdeathe on github.
• I am jdeathe (https://keybase.io/jdeathe) on keybase.
• I have a public key whose fingerprint is B076 A415 B14E 9393 BD6A BCE7 9071 AD75 7AE1 E9CE

To claim this, I am signing this object:

jdeathe

CentOS - Keeping Time with Chrony

Both CentOS-6 and CentOS-7 provide chrony as an alternative to the traditional ntp service. Chrony is a good fit for virtualised guests - a Vagrant box using the VirtualBox provider where you don't have/want the VirtualBox Guest Additions installed on the guest.

Installation

First install the chrony package with yum.

# yum -y install chrony

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CentOS - Configure Time Zone

System TimeZone

Setup a default ZONE environment variable.

Export the required local time zone value using the ZONE environment variable.

Skip this step if setting up a system with the default UTC time zone.

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CentOS - How to Require Password Change.

Running the following command, as the root, removes the existing password and forces password change on first login for the for the user "root".

# passwd -d root \
  && chage -d 0 root

When root next logs in they will receive the following message:

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MySQL Query Cache

How to add a 32M query cache with an item limit of 1M.

Enable on a Running MySQL Server

NOTE: You might need to add '-p' to the following command if 'root'@'localhost' requires a password on your environment.

# mysql \

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Docker - Varnish Cache with Apache HTTP Backend

Create Network

$ docker network create \
  --driver bridge \
  bridge_t1

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Installing modern memcached on CentOS-6

The version of memcached available in the CentOS-6 repositories is currently 1.4.4. This performs well with small items however there is a limit of 1M and an issue with slab imbalance.

Install the remi repository and install memcached

# rpm -q remi-release-6.8-2.el6.remi.noarch \
  &> /dev/null \
|| yum -y install \

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Using CURL to Capture Website Response Time

Generate 2 CURL templates, the first is for readability and the second is for generating a CSV report over time.

$ tee &> /dev/null ~/.curl_report <<-EOT
       url_effective: %{url_effective}\n
           http_code: %{http_code}\n
\n
      speed_download: %{speed_download}\n