Below is a quick (am busy) outline on how to automatically stop and start your EC2 instances. Step 1: Tag your resources In order to decide which instances stop and start you first need to add an auto-start-stop: Yes tag to all the instances you want to be affected by the start / stop functions. Note: You […]
Read more →If you want to automatically renew your certs then the easiest way is to setup a cron just to call letsencrypt periodically. Below is an example cron job: First create the bash script to renew the certificate Now enter the script in the following format into nano: Now edit the crontab to run the renew […]
Read more →I always forget the syntax of SCP and so this is a short article with a simple example of how to SCP a file from your laptop to your EC2 instance and how to copy it back from EC2 to your laptop: Copying from Laptop to EC2 scp -i identity_file.pem source_file.extention username@public_ipv4_dns:/remote_path scp: Secure copy protocol-i: Identity […]
Read more →I recently managed to explode my wordpress site (whilst trying to upgrade PHP). Anyway, luckily I had created an AMI a month ago – but I had written a few articles since then and so wanted to avoid rewriting them. So below is a method to create a backup of your wordpress mysql database to […]
Read more →If you are testing how your autoscaling policies respond to CPU load then a really simple way to test this is using the “stress” command. Note: this is a very crude mechanism to test and wherever possible you should try and generate synthetic application load.
Read more →Introduction This article follows on from the “Cloud Migrations Crusade” blog post… A single tenancy datacenter is a fixed scale, fixed price service on a closed network. The costs of the resources in the datacenter are divided up and shared out to the enterprise constituents on a semi-random basis. If anyone uses less resources than […]
Read more →I was playing with S3 the other day an I noticed that a file which I had uploaded twice, in two different locations had an identical ETag. This immediately made me think that this tag was some kind of hash. So I had a quick look AWS documentation and this ETag turns out to be […]
Read more →If you need to test out your big data tools below is a useful set of scripts that I have used in the past for aws emr and redshift the below might be helpful:
Read more →So after getting frustrated (and even recreating my ec2 instances) due to a “Permission denied (publickey)”, I finally released that the worpress builds by default as set up for SSH using the bitnami account (or at least my build was). This means each time I login using ec2-user I get: Being a limited human being, […]
Read more →This is a short blog, and its actually just simple a plea to AWS. Please can you do three things? North Virginia appears to be the AWS master node. Having this region as a master region causes a large number of support issues (for example S3, KMS, Cloudfront, ACM all use this pet region and […]
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