Objective: System Architecture
Here’s a little tip concerning modprobe. As you review the man page for this tool you may see the -l option. Pay attention to the verbiage: List all modules matching the given wildcard (or “*” if no wildcard is given). This option is provided for backwards compatibility. Read More
Month: April 2015
Holy Unauthorized Access, Batman!
You know, I honestly have no idea why I decided to do this today, but I was poking around my Digital Ocean account and found something interesting. I hopped on my droplet and for whatever reason decided to see if anyone other than myself was trying to use it. I was shocked to see how many attempts there were. Here’s but a brief section from /var/log/secure: Read More
yumdownloader
So you say you want to download a rpm file from some repository but you don’t necessarily want to install it right away? Or perhaps you want to host it yourself. Well, how about using yumdownloader? Read More
Back On Task
Well, I’ve been studying off and on, but mostly off. I hate to admit it but I don’t have a very good excuse. Well, technically I guess it’s a pretty good one depending on your point of view. My son thinks it’s pretty good. 🙂 We’ve been playing Wii Indiana Jones once I sign off from work and I haven’t felt like playing computer.
The good news is that we’re getting a lot better at figuring out what we have to do to find all the coins, minkits, etc. The bad news is that we each have our own ideas for what we need to do and end up working against each other rather than together. I should probably be a little less uptight about racking up the points and live more through the eyes of a 9-year-old.
But enough with that. This week I’ve been playing around with something new and I have to say that I’m pretty pleased so far. Thanks to StackSocial, I’m enjoying a 30-day trial of Linux Academy. I’m actually working through the LPIC 101 course right now. I am anxiously awaiting the arrival of the RHCSA 7 course but I’m not sure when in April it’ll go live.
One of the coolest features is that you can create up to four test servers. Now I really don’t need this, but it’s pretty awesome because it lets you choose from so many distros. If I were to do this on my own CentOS host I’d have to eat a lot of disk space with ISO images and spend a lot of time creating new virtual machines. I’m also in the midst of a Digital Ocean trial (more about that in a future post). DO makes it incredibly fast and easy to create new servers within seconds but it’s an additional expense. These test servers are all part of your $25/mo payment.
As you can see by the previous screenshot I’ve logged into my primary server via ssh and it’s running Red Hat Enterprise Linux 6.5. This is of particular interest to me since that’s the exact version we’ll be upgrading our work servers to within the month. Since I’m in trial mode I can only create a single server but the most common distros are available. This is real handy for studying the differences between distros (eg package managers, etc.) In addition to easily picking a new distro, you can also easily change the type of server you’re using.
I’m only on day two of my trial but I’m very impressed with the features/functionality and the materials so far. You can expect a more detailed review in the future.