Network Break 28
Coffee, doughnuts and networking. A perfect combination.
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The post Network Break 28 appeared first on Packet Pushers Podcast and was written by Greg Ferro.
Enabling and Mounting NFS on CoreOS
I’ve written about CoreOS a fair amount (see here, here, and here), but one of the things that is both good and bad about CoreOS is the automatic update mechanism. It’s good because you know your systems will stay up to date, but it’s bad if you haven’t taken the time to properly address how automatic updates will affect your environment (for example, you’ve manually started some Docker containers instead of using systemd unit files—when the CoreOS system reboots after an update, your Docker containers will no longer be running). Re-architecting your environment to fully account for this change in architecture and behavior is a larger discussion than can be addressed in a single blog post, but in this post I want to at least tackle one small part of the discussion: separating your persistent data. In this post, I’ll show you how to mount an NFS share on a CoreOS instance deployed on OpenStack (or any cloud that leverages cloud-init).
Now, you could probably go into your CoreOS instance and manually make these changes, but that’s still thinking the old way. In addition to thinking about keeping persistent data separate, we (data center/cloud architects) also need Continue reading
Cisco’s EoS announcement for the ASA CX Modules and Cisco Prime Security Manager
How about that, 2 blogs posts in one day! However this is going to a real quick post so it shouldn’t count but hey there is a picture so it’s legit! I caught wind of this announcement on twitter late last night and just needed to put a small post about it. Mainly because some […]
CCDE and CCAr Certificates – FAQ
CCDE is the de facto expert level, vendor neutral, and infrastructure network design certification in the industry. I have been helping to CCDE community for a while through my packet pushers articles and podcasts. I started couple months before to write about network design and CCDE related articles on my blog http://orhanergun.net as well. […]
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The post CCDE and CCAr Certificates – FAQ appeared first on Packet Pushers Podcast and was written by Orhan Ergun.
Networking Field Day – Afterthoughts – New SolarWinds features.
One thing I really liked about SolarWinds was the fact they were the first vendor to start with a white board discussion. Being a network engineer I am a big fan of drawing boxes and lines on a white board. To me it is a more engaging way to have a presentation compared pre-built […]
RFC 7454: BGP Operations and Security
After almost exactly three years of struggles our BGP Operations and Security draft became RFC 7454 – a cluebat (as Gert Doering put it) you can use on your customers and peers to help them fix their BGP setup.
Without Jerome Durand this document would probably remain forever stuck in the draft phase. It’s amazing how many hurdles one has to jump over to get something published within IETF. Thanks a million Jerome, you did a fantastic job!
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]
Using sipcalc The Great and Powerful Subnet Calculator
In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking,...[[ Summary content only, you can read everything now, just visit the site for full story ]]