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Stretching the Container Metaphor

The Docker/shipping container metaphor is overdone. I don’t think people have fully thought through what it might mean if containers do the same thing to computing as they did to shipping. Are we prepared for hipsters taking over derelict data centers? There is an unpublished rule that all Docker articles must be accompanied by a picture […]

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War Stories: ITIL Process vs Practice

Our irregular War Stories returns, with a story about a network I worked on with strict change control, but high technical debt. What should have been a simple fix became far more pain than it should have been. Lesson learned: next time just leave things alone. I’m sure the ITIL true believers loved their process, but did […]

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Brocade PyNOS Python Libraries

PyNOS v1.1 has been published. This is a python library that simplifies automating Brocade VDX systems. It is built on top of ncclient, and uses NETCONF to communicate with the VDX systems. Using the libraries is much simpler than writing your own NETCONF calls. What can I do with it? Use Python to script configuration or […]

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TruView Live Application Monitoring

Fluke Networks recently released TruView Live, a subscription-based service for monitoring internal & external applications. Tests can run from Fluke-managed cloud locations, your own systems, or from dedicated hardware appliances. I’ve been testing it out, and I like it so far. Provisioning Overall setup is pretty straightforward. Choose what you want to monitor, and how you want […]

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Unsupported BNA Hacks

Here’s a couple of quick hacks for working with Brocade Network Advisor. It’s unsupported, but you can run BNA on Ubuntu. You can also suppress the client-side JRE version mismatch warning. Ubuntu Install If you try to install BNA on Ubuntu, it fails during the DB initialization & setup phase. There are two reasons for […]

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Security – Just Another Risk

I made a conscious decision to move away from full-time information security work. I retain an interest, and try to keep up with developments, but I don’t want to be “the security guy.” There are several reasons for it, but a large part is due to the hype, the bullshit, and general inability for the […]

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/bin/sh – checking for bash vs dash incompatibilities

I have been investigating a problem where an application would install on RHEL/CentOS, but not on Ubuntu. I tracked it down to a problem with shell scripts that assumed that /bin/sh was bash. Ubuntu uses dash by default, so some ‘bashisms‘ don’t work. This will be old news to Ubuntu types that migrated to dash a while […]

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Add Brocade MLX & VDX Support to HP IMC

HP IMC 7.1 E0303P13 does not support configuration backups for Brocade MLX & VDX devices. But they do have an extensible model, so it’s easy to add support. Here’s how to do it, and how to fix the Brocade ICX support. Here’s the steps to add support for MLX & VDX devices to HP IMC: Download […]

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IPv6-test.com and SRX firewall policies

ipv6-test.com is a useful site for testing IPv4 & IPv6 connectivity. It checks that v4 & v6 are working as expected, and reports your browser v4/v6 preferences. It does have one oddity with ICMPv6 tests. Here’s what I did to work around it with my SRX setup. The site runs a suite of tests and gives […]

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