The ramblings of a computer geek
Elastic IP Addresses (EIP) are great as they provide you with a static IP address which you can use for an endpoint to your application, but when you are automating things with Terraform, you don’t want it to be continually re-created or that IP address will change, and if you have DNS records pointing at … Read more
The AWS Transit Gateway can be used to join the networking of many VPCs (in the same or different AWS Accounts) within the same region together to facilitate communication, it may also be used in conjunction with DX (Direct Connect) or Site-to-Site VPNs to provide connectivity to other Cloud Platforms but additionally to on-premise networks … Read more
DNS name resolution is essential to modern connectivity. The ability for hosts to be able to quickly and reliably resolve DNS domain names (e.g. www.google.com) to their IP address equivalents (e.g. 216.58.204.68 or 2a00:1450:4009:827::2004) to connect and consume services ensures consistent and performant network flows. Due to the essential nature of DNS, DNSSEC is an addition … Read more
AWS Route53 provides DNS Resolution (and DNS Registrar) services. You can use Route53 to register a domain, host the zone file and provide DNS resolution, alternatively, you can have the domain registered elsewhere, but then use Route53 to host the zone file and provide DNS resolution. There are some different options here, Route53 ties nicely … Read more
Building upon the example Simple Terraform Docker Example (Ubuntu Linux), we’ll store our Terraform State in AWS S3 Bucket, rather than just locally on the machine running Docker. Yes, I know its not a very useful example, but it simply illustrates the mechanism and how it can be used for more useful and complex deployments. Storing … Read more
A simple HTML based status page tool that allows you as a system administrator to just edit a CSV file and have the tool generate you a pre-formatted HTML status page that you can upload to your favourite website. The tool uses Python to read the CSV files for the status (of services) and any … Read more
Following on from my previous post: Static Website Hosting/Publishing Using AWS S3, AWS CloudFront, SSL Certificate And Custom FQDN, I had the need to ensure that a particular file was not cached by CloudFront and instead fetched each time. The particular example was that we wanted to use CloudFront, but in this case the website … Read more
I’ll assume you have your AWS CLI configured so you are able to login to an AWS account. If you need any help on this see: https://geekmungus.co.uk/?p=1167. Here’s a bit of a cheat sheet on how to use AWS S3 via the CLI. Listing Buckets Upload One File Upload the file called “myfile.txt” into the … Read more
When you are trying to login to AWS using the CLI tool, you may find that the window opens a tab in the wrong browser, to get around this you can apply a “–no-browser” at the end of the sso login command, for example: Now instead of opening a browser automatically, you’ll get the code … Read more
A standard AWS CloudFront distribution is set to automatically serve the index.html file of a website when a client requests the root of the site, e.g. https://www.geekmungus.co.uk and does not specify any specific file or file within a sub-directory. However in certain instances your clients may request a page as follows e.g: https://www.geekmungus.co.uk/studies within which an index.html … Read more