Short tip: Ansible – “failed to create temporary content file: ‘The read operation timed out'”
While using the Ansible modules get_url and unarchive I recently stumbled upon the following errors:
Posts in Category ‘OSBN/Ubuntuusers Planet’
Posts that are also published on the Open Source blog network or UbuntuUsers Planet
Test-driven development with Chef and Vagrant
When it is planned to automate deploying and configuring complex insfrastructure setups, Chef is a mighty tool. Focussing the Infrastructure as Code (IaC) manifesto, it offers more than conventional Configuration Management and can be used … Read more
Short tip: Python TypeError: __init__() takes exactly 2 arguments (4 given)
Recently, I stumbled upon the following issue while installing a Python utility on an older CentOS system:
Short tip: Puppet – “Unable to fetch my node definition, but the agent run will continue”
Doing a recent Puppet agent upgrade from version 3.x to 4.x I stumbled upon the following errors:
Short tip: Install missing SNMP MIBs under Debian Linux
Leveraging SNMP is often a pain when appropriate MIB files (Management Information Base) are missing – e.g. because the manufacturer did not document them or only offer them at fee. When utilizing a Perl program … Read more
Puppet agents force dozens of errors: “Could not set ‘file’ on ensure: incorrect header check”
Recently I had the problem that my homelab’s Linux machines managed by Puppet were generating dozens of error messages when updating the catalog:
Short tip: Manage cloned systems with SUSE Manager
It is a common procedure to use templates (“golden images“) when deploying virtual machines. Recently I had an issue when deploying SLES machines – newly registered systems within SUSE Manager replaced older one. The management … Read more
Apache Guacamole, Part 1: Basics and installation under CentOS 7
Readers of my blog know that I have been maintaining a homelab for a couple of years. I really like leveraging products I’m focussing on in my working hours also at home. In other words: I like … Read more
FirewallD in a nutshell 101
With FirewallD, some Linux distributions introduce a new default firewall differing heavily from previous interfaces. This post focusses the basic concept and some practical examples. A major difference is that the firewall now supports changes … Read more
Short tip: Apache and Pacemaker: invalid parameter
Recently I had some issues with a Linux cluster running Corosync, Pacemaker and Apache. I was unable to run the redskin as ressource – starting always failed with “invalid parameter“: # crm resource start apache … Read more