Mark Allen

bash

Is it vibe coding if I know what I’m doing?

Anyone can watch a YouTube video and think they can renovate their bathroom, but as someone who has tried to do it, I can tell you that it’s a lot harder than it looks. I think vibe coding is the same way. Anyone can ask Lovable or Bolt to

Tips & Tricks

Standardizing tsconfig.json

This week, I've been creating many typescript applications to test different ways of creating AI chatbots using Model Context Protocol (MCP). One thing that speeds me through this is that I have a standardized way to create a tsconfig.json so that I'm always at the

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Tips & Tricks

Setup Kubernetes Admin on Linux with Brew

My goal for the year was to transition from a Macbook Pro to an iPad Pro for most of my development tasks, which required migrating my kubernetes admin tools to function in the cloud. To accomplish this, I’m using several AWS EC2 instances running Ubuntu. Here, I will detail

DevOps

Connecting Feature Flags with DORA Metrics

Intro to DORA Metrics Measuring the success and impact of new development processes is crucial to ensuring your team is always well-equipped with tools and processes that drive growth. Any team looking to adopt feature flags in their workflow should also adopt a way to properly measure DORA metrics, specifically

DevOps

Non-boolean Feature Flags

Feature flags aren’t just booleans that turn a feature on or off based on their value. They can also be used to evaluate expressions such as the application's version, compare a value to a string, or, as this example will show, change the site's behaviour

Linux

VIM & Tmux Basics

Why? Vi (vim) is the only editor you can be guaranteed to have on a Linux machine. If you ever have to log into a server or container to see what's going on or make changes, this will be all you'll have. It will save your

Linux

Upgrading from Ubuntu 12.10 to 14.04

It seems that a few of my instances in AWS were originally set up using Ubuntu 12.10. I don't know how that happened, but anyway, now that 12.10 is no longer supported, you can't just upgrade. So the solution is to use the old.

vagrant

Vagrant machine status

If you need to get the status of a vagrant machine, you can run the following in a command window: vagrant status aws --machine-readable | awk -F"," '{if ($3 == "state") print $4;}' Will output: running if the machine is running or not_created if it

AWS

AWS SNS and SQS Example using NodeJS

Using SNS and SQS and Example using NodeJS Motivation I wanted to test out using the new aws-sdk with Amazon Web Services (AWS) SNS and SQS services.  It is now possible to subscribe queues to topics therefore creating a pub/sub style system without any system configuration work. Setup at

Linux

OpenSUSE 11.1 for Vagrant

Seems that last week I needed an openSUSE 11.1  VM to test out some chef scripts.  Vagrant Cloud which is a great place to find Vagrant VMs didn't have one, so I decided to create one. Start first by downloading and installing packer an incredible tool for

Windows

Dependency Walker

Currently working out a build system for a windows application.  Found this was helpful when trying to figure out which dlls where being used by some dlls created a long time ago. Dependency Walker (depends.exe) Home Page. Shows the dependency hierarchy of the dll or exe.

Linux

Nginx Deny IP

This is a quick way to deny an ip address accessing your nginx server. Create a new file in /etc/nginx/conf.d called blockips.conf Add the following to the file: deny <bad ip>; Then restart nginx.  The log file will now show 403's for

Wordpress

Disable Wordpress XML-RFP (pingback)

In March there was a DDOS attack that used many (160,000) wordpress sites to flood other websites.  This was done because wordpress now has xml-rpc on by define. It is possible to turn off xml-rpc using a plugin. http://wordpress.org/plugins/remove-xmlrpc-pingback-ping/ This adds a filter without the

Windows

Windows ISO

Looking for ISOs for Windows.  Used the Windows 7 x64 Professional without a problem. http://www.heidoc.net/joomla/technology-science/microsoft/14-windows-7-direct-download-links

Oracle

RMAN: Use CROSSCHECK command to fix status

What to do when an obsolete rman object can't be found. EnvironmentMake sure ORACLE_HOME, ORACLE_SID and PATH are set correctly * rman also comes with X11R6 so make sure that ORACLE_HOME/bin is first in your PATH Log Into RMAN rman target / Find the mismatched objects

Oracle

ORA-01654: unable to extend index

Database can't extent an index. ProblemORA-01654: unable to extend index SYS.I_FILE#_BLOCK# by 128 in tablespace SYSTEM SolutionCheck the size and maxsize of the data files in the SYSTEM tablespace select file_name, bytes, autoextensible, maxbytes from dba_data_files where tablespace_name='SYSTEM'

Linux

Fixing SELinux Content in a HTML directory

Unable to access web files in a directory under the /var/www/html becuase of a 403 forbidden might be a context problem. ProblemGetting a 403 forbidden error message when accessing a new file or directory in /var/www/html. Check /var/log/messages to see if there are any:

Oracle

Oracle XE Recovery

How to recover an Oracle XE Backup First make sure the database is in archive log mode and running backups on a daily basis. See Oracle XE Backup for instructions on how to do this. Reverting to a Previous BackupIf something has gone wrong with the database, such as deleting

Oracle

Oracle Backup and Recovery Scenarios

Some standard recovery scenarios Deleted or Corrupted DatafileIf a database datafile in the $ORACLE_HOME/oradata/XE  is deleted then the database will no longer open.  It is not possible to recover just the datafile from a backup since it will be out of sync with the other datafiles and

Linux

Setting up VNCServer

How to setup vncserver on a linux machine to run gnome or kde. InitializeStartup vncserver for the first time on port 5910 (:10) and set the password. [root@localhost ~]# vncserver :10 You will require a password to access your desktops. Password: Verify: xauth:  creating new authority file /root/.Xauthority New

Oracle

Setup Oracle XE Account on Linux

The oracle account that is created by the Oracle XE installer isn't very helpful. Setup BashLog into the system as root and su to oracle #su - oracle Copy over the bash files from the /etc/skel directory cp /etc/skel/.bash* . Edit .bash_profile and add ORACLE_

Apache

Sending all requests from http to https

Add the following lines to the VirtualHost directive: RewriteEngine on Redirect any traffic to https RewriteRule ^/(.*)$ https://%{HTTP_HOST}/$1 [L,R]

Oracle

OCS Content Services - ORA-12705: invalid or unknown NLS parameter value specified

Unable to access Oracle Collaboration Suite Content Services due to a ORA-12705: invalid or unknown NLS parameter value specified ProblemWhen going to http://servername:port/content/app you get a http 503 error. The log file <mid-tier>/j2ee/OC4J_Content/application-deployments/content/OC4J_Content_default_island_1 has

Oracle

OID Query to get Portal Password

To query OID you can use ldapsearch that comes with oracle. If you want to get the Portal password for you Oracle Portal installation you can issues the following from the command line: ldapsearch -v -D "cn=orcladmin" -w "orcladminpassword" -h host -p 389 -s sub