Category: Amazon Web Services (AWS)
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Powershell on Linux
In a previous post I compared Powershell with Bash. With recent announcements that Bash is supported on Windows and Powershell on Linux system admins have more freedom than ever. This matters to me as an occasional system admin. I find it very difficult to remember how to administer both systems at the command prompt. It…
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[Fixed] I do not receive Turkish e-Visa confirmation emails
I lost several hours and a lot of patience trying to get a Turkish e-Visa. The problem was that none of my email addresses could receive the confirmation email. Trip Advisor has many others with the same problem. I solved this problem by using my work email. Other people have created a Gmail account for…
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How to clone a Bitnami server in the AWS console
I use the excellent Bitnami WordPress AMI. I wanted to clone it so I made a snapshot and then created an image from the snapshot. The newly created AMI launched but only passed 1/2 health checks. The problem was that when creating the AMI I left the AKI (Amazon Kernal Image) on “default”. You must…
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How to convert from keys from .ppk to .openssh
The nice thing about computer standards are that there are so many to choose from. I use PuTTY on Windows to login to my Bitnami Ubuntu machines on the Amazon Cloud. PuTTY uses the .pkk key format. I develop using Intellij. This can deploy to remote hosts but uses the OpenSSH key format. To convert…
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Installing Newrelic server monitoring
In a previous post I explained how to install Newrelic server application monitoring for WordPress. I now realise that this is probably putting the cart before the horse in that one should install Newrelic Server monitoring first. This is very easy. The instructions are here and at the bottom of the page it gives advice on…
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Installing Newrelic application monitoring on Bitnami Servers
W3 Total Cache recommends Newrelic for WordPress application monitoring. Newrelic provides detailed server and application monitoring. The PHP agent tracks which pages take a long time to render and which queries take a long time to run. Install Newrelic I installed the Newrelic agent and daemon using apt get as instructed on their website. (Bitnami…
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How to give an IAM user access to an S3 bucket
My backup strategy for my Bitnami WordPress Multisite has been to enable hourly snapshots in the Bitnami EC2 console. Now that I have created a WordPress Multisite farm on my server this is no longer sufficient. The reason is that I need the ability to restore (and hence backup) individual websites and the server now hosts many websites.…
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How to connect as root using WINSCP
In my previous post I noted that I had not succeeded in in connecting to a linux machine as root using WINSCP when using the bitnami virtual machine. My development implementation works, so I have progressed to using the cloud hosted bitnami instance. This comes with public key access rather than password access. This actually…
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Amazon AWS adds another high availability solution – DNS Failover
In the past each “9” on your availability cost about 10x more. So for example, 99.99% availability cost 10x more than 99.9% availability. Amazon is making inroads into these costs. Amazon Elastic Beanstalk already offers inexpensive load balancing that will direct users to working nodes and even start additional nodes when demand increases. That’s great…
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“Big data” on AWS – Redshift
“Big data” is hot, hot, hot (Gartner hype cycle) and now supported by Amazon Web Services. Although pitched as “Big data” it will be very interesting to see the tools offering. I provide services to small to medium-sized enterprises and I am interested in how AWS can support the data warehousing requirements of these organisations.…
Dr James Bayley 