RobotRouter: Bandwidth of Xfinity Internet on 2016-10-10

RobotRouter ran speedtest-cli.sh every hour on 2016-10-10 and reported the following aggregate statistics:

Metric Value
Average Download Speed 86.536249999999976
Average Upload Speed 4.7145833333333337
Min Download Speed 83.98
Min Upload Speed 4.6399999999999994
Max Download Speed 88.930000000000012
Max Upload Speed 4.74

The raw results can …

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RobotRouter: Bandwidth of Xfinity Internet on 2016-10-09

RobotRouter ran speedtest-cli.sh every hour on 2016-10-09 and reported the following aggregate statistics:

Metric Value
Average Download Speed 87.67375
Average Upload Speed 4.6916666666666663
Min Download Speed 82.67
Min Upload Speed 4.08
Max Download Speed 91.069999999999988
Max Upload Speed 4.75

The raw results can …

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Fuel: Separate Ceph Public from Management using Network Templates

This post will demonstrate using Network Templates in Fuel to separate Ceph Public Network from Management Network. By default Fuel combines the ceph public network with the management network. The Ceph Public network is used for communicating from the compute nodes to the Ceph nodes. So in high performant storage …

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Creating a KVM VM for StackLight on Fuel 8.0 master node

Creating a KVM VM on the Fuel master node is a nice way to better utilize server resources for small environments that were deployed already without using Fuel compact install or running Fuel as VM itself. We can run Controller, Monitoring or MongoDB as VM on the Fuel node. This …

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Running Computer Vision algos on Spark with OpenCV

This post shows several computer vision steps implemented on top of Spark. OpenCV is used to extract features on top of OpenStack and Spark MLLib KMeans is used to generate our KMeans dictionary. Then we use Spark and simple vector / matrix manipulation to do coding and pooling.

Workflow implemented using …

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Elastic Data Processing on OpenStack with Spark, Tachyon and Swift

This post will describe how to configure, build and deploy Spark with Tachyon and Swift as storage. This architecture is meant to be more suitable for running Big Data workloads on top of the cloud such as OpenStack.

Using Swift as storage layer for Spark gives us the ability to …

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Setup IPv6 in Tsinghua on Linux(ArchLinux))

Tsinghua university uses ISATAP to provide IPv6 connectivity to students. In Linux you can use the isatapd program to create an ISATAP tunnel based on an IPv4 device.

You can use the isatapd command as follows to establish an ISATAPD tunnel:

isatapd --router isatap.tsinghua.edu.cn

After connecting check …

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Enable SRIOV on OpenStack Juno

Update: This blog post is deprecated by the official documentation. Please take a look at the official Networking Guide: Using SRIOV functionality. Patch set that added the official documentation: changeset.

Terms used
Term Definition
SRIOV Single Root IO Virtualization. SRIOV allows a PCIe device to appear to be multiple separate …

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Create Linux bridge without losing existing connection

The dillemma: You're accessing your server via SSH through interface eth1.102 with the ip 10.20.0.2/24 and gateway 10.20.0.1. Now you want to add eth1 to a linux bridge so you can hookin VMs on a vlan trunk.

Solution: Create a script which …

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Hadoop on demand with Openstack, Cloudinit and Salt

This post will describe the whole process of providing hadoop on demand through Openstack, Cloudinit and Saltstack. We will use Openstack to provision servers on demand, cloudconfig to install salt-master and salt-minion and saltstack to deploy hadoop namenode and datanodes, all fully automated. This makes us able to deploy a …

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