Updating Let’s Encrypt on Amazon EC2 – Resolve “zope.interface… No module named interface”

Updating Let’s Encrypt on Amazon EC2 – Resolve “zope.interface… No module named interface” featured image

On AWS EC2 instances, sometimes we run into an issue or two, in particular, in dealing with Let’s Encrypt certification. To be frank, auto-renew has been very difficult, but it seems like the issue has gradually become clear: Awe need to install and update PIP; and then, the AWS linux puts this into the “wrong” […]

How to Setup FTP (FTPS (not SFTP)) on an AWS EC2 Instance

How to Setup FTP (FTPS (not SFTP)) on an AWS EC2 Instance featured image

Below are the commands required to setup FTP (well, FTPS in fact) on your AWS EC2 cloud instance. I’m assuming you use AWS flavour of Linux. If you use Ubuntu or whatever, file locations, commands, and other such will more than likely be different. I have added in some commentary which may or may not […]

Adding a User to AWS with CloudFront permissions

Adding a User to AWS with CloudFront permissions featured image

If you want to allow someone else (like a contractor, or Silicon Dales) to access your AWS account to add CloudFront to act as a CDN for your WordPress website (and why wouldn’t you, its a great way to offload static content, and can even be free for your first year under the free usage […]

AWS AMI Let’s Encrypt Troubleshooting & Fixing “No module named interface”

AWS AMI Let’s Encrypt Troubleshooting & Fixing “No module named interface” featured image

This is a pretty technical post, about how to troubleshoot and fix a not-quite-renewing correctly lets encrypt certificate on AWS instances! If you’ve tried to renew a Lets Encrypt cert on AWS EC2, and have run into an issue, which ends with (something like): from zope.interface import Interface ImportError: No module named interface You have […]

What To Do If You Get “System Error 1” During AWS Phone Verification

What To Do If You Get “System Error 1” During AWS Phone Verification featured image

Successfully get your account setup pin after receiving an error message. Today, during a routine task we perform regularly – installing an Amazon Web Services (AWS) account on behalf of a client – we received an error message during the AWS signup process. While waiting for the telephone verification process to complete, up popped an […]

Apache HTTPD: Address already in use: make_sock: could not bind to address

This is a post for those sysadmins out there who run into problems running servers with a LAMP setup. Occasionally, for some reason or another – usually because you changed some setting – it is necessary to restart apache from the terminal (i.e. in PuTTy). Sometimes, though this is rare, this fails. If apache fails […]

Installing XCache on Amazon EC2

Installing XCache on Amazon EC2 featured image

We’ve been benchmarking Amazon EC2 server instances for some highly complicated PHP applications over the past week. During this time, we’ve discovered that XCache is perhaps the best opcode caching product for our purposes. If anyone would like a walkthrough for installing XCache on an Amazon EC2 instance, simply leave a comment below and we […]

How to Update Linux on Amazon EC2 with Yum

It’s really quite straightforward to update your Amazon EC2 instance to the latest versions: Login with your secure key via your terminal window; then Type “Sudo -i” and hit enter Type “yum update” and hit enter Hit “Y” to agree to the updates Wait for the software to carry out the update. That’s it! The […]

Installing the GD Library

Because I just posted this description in the post I wrote on how to make WordPress Auto-Thumbnails work, I thought I would also post those instructions straight up as a pointer for anyone out there who is looking for the command required to install the GD Library in their LAMP setup, so here it is: […]

Installing APC on Amazon EC2 Instance

Installing APC on Amazon EC2 Instance featured image

Some time ago, I wrote a short blog post explaining how to go about installing XCache on an Amazon EC2 instance to help with opcode caching. More recently, we’ve begun using APC for similar reasons, with excellent results, including on Amazon EC2 Micro instances, which can be used under their free usage tier to run […]

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