Enforcing SLAs with Real Data

I’m sure by now you’ve probably seen tons of articles telling you about how important it is to travel with location devices in your luggage. The most common one I’ve seen is the Apple AirTag. The logic goes that if you have one in your checked suitcase that you’ll know if there are any issues with your luggage getting lost right away because you’ll be notified as soon as you’re separated from it. The advice is sound if you’re someone that checks your bag frequently or has it lost on a regular basis.

The idea behind using technology to enforce an agreement is a great one. We make these agreements all the time, especially in networking. These service level agreements (SLAs) are the way we know we’re getting what we pay for. Take a leased line, for example. You typically pay for a certain speed and a certain amount of availability. The faster the link or the more available it is the more it costs. Any good consumer is going to want to be sure they’re paying for the right service. How can you verify you’re getting what you’re paying for?

For a long time this was very hard to Continue reading

Edge data center market to double in next 5 years, researchers say

The market for edge data center services and equipment will grow at a compound annual rate of 17% over the next five years, propelling the total size of the market above $18 billion by 2026, according to a report from Ireland-based analytics firm ResearchAndMarkets.com.Edge data centers, which the report defined as “small data centers located close to the edge of a network”—that is, closer to the end-user than the public cloud—are currently a $9.3 billion global market, the researchers said, which they predict will nearly double in size in the next half-decade.To read this article in full, please click here

Edge data center market to double in next 5 years, researchers say

The market for edge data center services and equipment will grow at a compound annual rate of 17% over the next five years, propelling the total size of the market above $18 billion by 2026, according to a report from Ireland-based analytics firm ResearchAndMarkets.com.Edge data centers, which the report defined as “small data centers located close to the edge of a network”—that is, closer to the end-user than the public cloud—are currently a $9.3 billion global market, the researchers said, which they predict will nearly double in size in the next half-decade.To read this article in full, please click here

Hedge 140: Aftab S and RIR Policies

Regional Internet Registries (RIRs) assign and manage numbered Internet resources like IPv4 address space, IPv6 address, and AS numbers. If you ever try to get address space or an AS number, though, it might seem like the policies the RIRs use to determine what kin and scale of resources you can get are a bit arbitrary (or even, perhaps, odd). Aftab Siddiqui joins Russ White and Tom Ammon to explain how and why these policies are set the way they are.

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Dell upgrades PowerStore hardware, software

Dell is detailing hardware and software updates to its midrange unified file and block PowerStore storage architecture.The upgrades come two years after Dell launched the PowerStore platform, which it claims has seen 12,000 deployments in that time. That’s a pretty good showing considering it competes with NetApp, HPE, Hitachi Vantara, IBM, and Pure Storage in the block storage market.Shannon Champion, product marketing lead for Dell Technologies in converged infrastructure and hyperconverged infrastructure (HCI), detailed the upgrades in a blog post. To read this article in full, please click here

Dell upgrades PowerStore hardware, software

Dell is detailing hardware and software updates to its midrange unified file and block PowerStore storage architecture.The upgrades come two years after Dell launched the PowerStore platform, which it claims has seen 12,000 deployments in that time. That’s a pretty good showing considering it competes with NetApp, HPE, Hitachi Vantara, IBM, and Pure Storage in the block storage market.Shannon Champion, product marketing lead for Dell Technologies in converged infrastructure and hyperconverged infrastructure (HCI), detailed the upgrades in a blog post. To read this article in full, please click here

Repeating commands on Linux with or without changes

Life on the command line on Linux is clearly something most of us enjoy, but typing the same command again and again can become tiresome. To avoid that boredom, this post explains a number of ways that you can make repeating commands – or repeating commands but with some changes – a lot easier than you might expect.Rerunning the previous command First, the easiest way to repeat a command is simply by typing !!. If you were logged into a Linux server and waiting for a coworker to log in, for example, you might want to repeat the who command shown below until you see your coworker’s username. Typing !! after the initial who command will do this for you.To read this article in full, please click here

Repeating commands on Linux with or without changes

Life on the command line on Linux is clearly something most of us enjoy, but typing the same command again and again can become tiresome. To avoid that boredom, this post explains a number of ways that you can make repeating commands – or repeating commands but with some changes – a lot easier than you might expect.Rerunning the previous command First, the easiest way to repeat a command is simply by typing !!. If you were logged into a Linux server and waiting for a coworker to log in, for example, you might want to repeat the who command shown below until you see your coworker’s username. Typing !! after the initial who command will do this for you.To read this article in full, please click here

Network RPA Compliance and Security Use Cases: Gluware LiveStream June 28, 2022 (6/7) – Video

The Gluware application suite that includes Device Manager, Config Drift and Audit, OS Manager and Config Modeling provide no-code automation to enable and maintain compliance and enhance security. Now, Network RPA enables defining automated end-to-end processes that ensure policies and procedures are executed manually, scheduled or event-driven providing continuous compliance and improved security posture. Host […]

The post Network RPA Compliance and Security Use Cases: Gluware LiveStream June 28, 2022 (6/7) – Video appeared first on Packet Pushers.

Using Default AWS Resources with Pulumi

Per the AWS documentation (although I’m sure there are exceptions), when you start using AWS you are given some automatically-created resources: a default VPC that contains public subnets in each availability zone in the region along with an Internet gateway and settings to enable DNS resolution. Most of the infrastructure-as-code tutorials that I’ve seen start with creating a VPC and subnets and gateway, but what if you wanted to use these default resources instead? I wasn’t really able to find a good walkthrough on how to do this, so this post provides some sample Go code you can use with Pulumi to identify these default AWS resources and use them.

I’ll approach this from the perspective of wanting to launch an EC2 instance in the default infrastructure that AWS provides for you in a region. To launch an EC2 instance using Pulumi (and most other infrastructure-as-code tools), there are several pieces of information you need:

  1. An AMI ID
  2. The instance type
  3. The name of an SSH keypair that’s been uploaded to/created in AWS
  4. A subnet ID
  5. A security group ID

The first three are probably things you’ll want to parameterize (i.e., make it possible for you to pass Continue reading

ClickHouse SF Bay Area Meetup: Akvorado

Here are the slides I presented for a ClickHouse SF Bay Area Meetup in July 2022, hosted by Altinity. They are about Akvorado, a network flow collector and visualizer, and notably on how it relies on ClickHouse, a column-oriented database.

Slides in PDF format

The meetup was recorded and available on YouTube. Here is the part relevant to my presentation, with subtitles:1

I got a few questions about how to get information from the higher layers, like HTTP. As my use case for Akvorado was at the network edge, my answers were mostly negative. However, as sFlow is extensible, when collecting flows from Linux servers instead, you could embed additional data and they could be exported as well.

I also got a question about doing aggregation in a single table. ClickHouse can aggregate automatically data using TTL. My answer for not doing that is partial. There is another reason: the retention periods of the various tables may overlap. For example, the main table keeps data for 15 days, but even in these 15 days, if I do a query on a 12-hour window, it is faster to use the flows_1m0s aggregated table, unless I request something about Continue reading

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