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blessed-contrib

January 19, 2015 by Jorge Morales

While browsing in Google+ I encountered blessed-contrib and I wanted to share.

Build dashboards (or any other application) using ascii/ansi art and javascript.

[Read more…]

Filed Under: Articles, DevOps Tagged With: devops, linux

Linux Performance Analysis and Tools

September 4, 2014 by Jorge Morales

Excellent Presentation from Brendan Gregg’s Talk at SCaLE 11x

Slides…

Linux Performance Analysis and Tools from Brendan Gregg

Filed Under: Articles, DevOps Tagged With: devops, linux

Ubuntu Change Network Interface from p2p1 to eth0

August 15, 2014 by Jorge Morales

Here is the situation:

I just installed Ubuntu Server 14.04 and then noticed a change when it ask me to configure the network.

Instead of the traditional “eth0” and “eth1” I had “p2p1” and “p2p2”

My first question was: What is p2p1 mean?

Servers often have multiple Ethernet ports, either embedded on the motherboard, or on add-in PCI cards.

Linux has traditionally named these ports ethX, but there has been no correlation of the ethX names to the chassis labels – the ethX names are non-deterministic. Starting in your brand new Linux distribution, Ethernet ports will have a new naming scheme corresponding to physical locations, rather than ethX.

Ethernet ports embedded on server motherboards will be named em<port_number>, while ports on PCI cards will be named p<slot_number>p<port_number>, corresponding to the chassis labels.

Additionally, if the network device is an SR-IOV Virtual Function or has Network Partitioning (NPAR) capability, the name will have a suffix of _<virtual_function> or _.

Second question was: How do I fix it?

[Read more…]

Filed Under: Articles Tagged With: linux, ubuntu

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