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Brian Cunnie

Brian Cunnie is a developer on Pivotal 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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