Category: sysadmin

ScriptForm v1.1: Webserver that automatically generates forms to serve as frontends to scripts

ScriptForm is a stand-alone webserver that automatically generates forms from JSON to serve as frontends to scripts. It takes a JSON file which contains form definitions, constructs web forms from this JSON and serves these to users over HTTP. The user can select a form and fill it out. When the user submits the form, it […]

Ansible-cmdb v1.19: Generate a host overview of Ansible facts.

I’ve just released ansible-cmdb v1.19. Ansible-cmdb takes the output of Ansible’s fact gathering and converts it into a static HTML overview page containing system configuration information. It supports multiple templates (fancy html, txt, markdown, json and sql) and extending information gathered by Ansible with custom data. This release includes the following bugfixes;: Always show stack trace on error and […]

Bexec: Execute script in buffer and display output in buffer. Version 0.10 released.

After almost a year of no releases, I’ve made a new release of Bexec today. It’s a minor feature release that brings a new setting to Bexec: bexec_splitsize. This settings controls the default size of the output window. You can set it in your .vimrc as follows: let g:bexec_splitsize=20 This will always make the output […]

Multi-repo Git status checking script

I’ve got a whole bunch of Git repositories in my ~/Projects/ directory. All of those may have unstaged, uncommitted or unpushed changes. I find this hard to keep track of properly, so I wrote a script to do this for me. The output looks like this: As you can see, it shows: Untracked files: File that […]

USB 3 interferes with wireless radio-controlled keyboards and mice

I bought an Intel NUC Kit NUC5CPYH as a replacement for my Raspberry Pi 2b media center and file server. One of the main advantages of the NUC over the Raspberry is that it has USB v3 ports, which greatly increases the throughput speeds to the external USB disks and doesn’t require me to have external power […]

Very fast MySQL slave setup with zero downtime using rsync

Most online tutorials for setting up a slave replication database involve dumping and loading the database on the master with mysqldump. Unfortunately, loading data with mysqldump can be very slow. My friend Cris suggest a much faster method using rsync. Benefits The benefits of this method are: Very fast setup of a slave by avoiding […]

Ansible-cmdb v1.17: Generate a host overview of Ansible facts.

I’ve just released ansible-cmdb v1.17. Ansible-cmdb takes the output of Ansible’s fact gathering and converts it into a static HTML overview page containing system configuration information. It supports multiple templates (fancy html, txt, markdown, json and sql) and extending information gathered by Ansible with custom data. This release includes the following bugfixes;: A bug that caused whitespace to be […]

Disable “New release available” emails on Ubuntu

We have our Ubuntu machines set up to mail us the output of cron jobs like so: $ cat /etc/crontab SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin MAILTO=admin@example.com # m h dom mon dow user command This is encrible useful, since cronjobs should never output anything unless something is wrong. Unfortunately, this means we also get emails like this: /etc/cron.weekly/update-notifier-common: […]

Ansible-cmdb v1.15: Generate a host overview of Ansible facts.

I’ve just released ansible-cmdb v1.15. Ansible-cmdb takes the output of Ansible’s fact gathering and converts it into a static HTML overview page containing system configuration information. It supports multiple templates and extending information gathered by Ansible with custom data. This release includes the following bugfixes and feature improvements: Improvements to the resilience against wrong, unsupported and missing data. […]

cfgtrack: A simpel tool that tracks and reports diffs in files between invocations.

Sometimes other people change configurations on machines that I help administer. Unfortunately, I wouldn’t know when they changed something or what they changed. There are many tools available to track configuration changes, but most are way overpowered. As a result they require too much time to set up and configure properly. All I want is […]

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