Nowadays, this is practically standard, as most computers have both a wired and wireless NIC. But rarely do you have both connected at the same time. Have you wondered what happens when you have 2 connected NICs to 2 separate… (Continue Reading →)

Trying to be cheap, I only allocated 16G to my AWS EC2 instance. But I eventually wanted to migrate my wordpress sites, to a second “test” environment, to try different things in upgrading the site. But 16G doesn’t leave a… (Continue Reading →)

The t-series of EC2 VMs available from AWS, is a “burstable” series of VM. It isn’t intended for any high-CPU utilization for any longer than 1 sec. In fact, there is something called a CPU credit usage and CPU credit… (Continue Reading →)

Depending on who you are, there are two things that need constant monitoring in almost all cloud services that are usage based. And which ones aren’t? Fixed cost services, like a monthly fee for GoDaddy hosting that never changes, no… (Continue Reading →)

…DNS resolution only works between containers in same virtual docker network subnet Short description of when routing is needed A subnet means all the numbers in beginning of IP address must be the same. Only the end different. The subnet… (Continue Reading →)

You can read it yourself. https://www.techrepublic.com/article/how-to-build-a-docker-image-and-upload-it-to-docker-hub/ You need to create a Docker hub account, and copy it’s token (aka password) You need a containerized application worth uploading But I wrote a script to upload a wordpress image to PUBLIC repo.… (Continue Reading →)

Free Cloud Storage, for things you want saved, don’t want it occupying your hard drive, but don’t mind administrators browsing thru Need a place to store offline database, and web server backups? ————– Every Google Account comes with 15 GB… (Continue Reading →)

This does not go over DNS for email, which is different. And I’m not even sure how that DNS data is looked up, for mail-relay. SMTP and IMAP use the regular A and CNAME records. The MX record, is used… (Continue Reading →)

An hourly job to run a iperf3 (a throughput analyzer) 0 * * * * docker exec -t iperf3-server iperf3 -c 100.24.142.145 || docker restart iperf3-server >> ~/restart_iperf.log may resulted in this: And a increase of $20 that month before… (Continue Reading →)