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Brian Cunnie

Brian Cunnie is a developer on Pivotal Software's Cloud Foundry project. He works on the team that maintains the Continuous Integration (CI) servers and the vSphere and OpenStack infrastructure used by the developers. His interests include networking (primarily the first three layers: physical, data link, and network), low-level services (e.g. DNS, NTP, DHCP), and security.

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LABS A Valid SSL Certificate for Every IP Address enables developers to equip their servers with valid SSL certificates for free (albeit with an awkward hostname); this blog post discusses how the framework was created using BOSH

Troubleshooting BOSH Releases/Deployments

Debugging a BOSH Release and it subsequent deployment can be challenging, but there are a few tricks which can ease the burden (e.g. preventing the tear-down of the compilation VM in order to troubleshoot the failure in vivo).

Deploying a DNS Server to Amazon AWS with bosh-init

This post describes how to deploy a BIND 9 DNS server to Amazon AWS using bosh-init, a command-line BOSH tool that enables the deployment of VMs without requiring a Director VM. This blog post is the second of a series; it picks up where the previous one, How to Create a BOSH Release of a DNS Server, left off. Previously we described how to create a BOSH release (i.e. a BOSH software package) of the BIND 9 DNS server and deploy the server to VirtualBox via BOSH Lite.

How to Create a BOSH Release of a DNS Server

BOSH is a tool that (among other things) deploys VMs. In this blog post we cover the procedure to create a BOSH release for a DNS server, customizing our release with a manifest, and then deploying the customized release to a VirtualBox VM.

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Deploying BOSH Lite in a Subnet-Accessible Manner

BOSH is a tool that (among other things) deploys VMs. BOSH Lite is a user-friendly means of installing BOSH using Vagrant.

A shortcoming of BOSH Lite is that the resulting BOSH VM can only be accessed from the host which is running the VM (i.e.

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Increasing the Size of a VCSA Root Filesystem

In this blog post we describe the procedure to increase the size of the root filesystem of a VCSA (VMware vCenter Server Appliance). This is not normally needed and is only necessary when there is uncommon storage pressure on the VCSA’s root filesystem, e.g.

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A High-performing Mid-range NAS Server, Part 2: Performance Tuning for iSCSI

This blog post describes how we tuned and benchmarked our FreeNAS fileserver for optimal iSCSI performance.

For most workloads (except ones that are extremely sequential-read intensive) we recommend using L2ARC, SLOG, and the experimental iSCSI kernel target.

Of particular interest is the experimental iSCSI driver, which increased our IOPS 334% and increased our sequential write performance to its maximum, 112MB/s (capped by the speed of our ethernet connection).

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A High-performing Mid-range NAS Server

Part 1: Initial Set-up and Testing

This blog post describes how we built a high-performing NAS server using off-the-shelf components and open source software (FreeNAS). The NAS has the following characteristics:

total cost (before tax & shipping): $2,631 total usable storage: 16.6 TiB cost / usable GiB: $0.16/GiB IOPS: 884 [1] sequential read: 1882MB/s [1] sequential write: 993MB/s [1] double-parity RAID: RAID-Z2

[2014-10-31 We have updated the performance numbers.

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Installing a CA-issued Wildcard SSL Certificate in VCSA 5.5

In this blog post we describe a process to replace a VMware vCenter Server Appliance’s (VCSA’s) self-signed certificate with Certificate Authority-signed (CA-signed) certificate.

VMware has already described such a process in Knowledge Base Article 2057223; however, the process they describe is cumbersome: it requires SSL certificates for four services that the VCSA provides.

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Backing up VCSA 5.5 DBs to S3

The Cloud Foundry Development Teams use a heavily-customized VMware vCenter Server Appliance (VCSA) 5.5. We needed to architect an offsite backup solution of the VCSA’s databases to avoid days of lost developer time in the event of a catastrophic failure.

This blog post describes how we configured our VCSA to backup its databases nightly to Amazon S3 (Amazon’s cloud storage service).

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