Posts that are also posted on XING, LinkedIn and Amazon
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
Recently, I stumbled upon the following issue while installing a Python utility on an older CentOS system:
Doing a recent Puppet agent upgrade from version 3.x to 4.x I stumbled upon the following errors:
VirtualBox enjoys great popularity where it is required to virtualize common operating systems for conventional use-cases at no cost. In comparison with other hypervisors such as VMware Workstation, VirtualBox only offers basic graphics acceleration – … Read more
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
Recently I needed access to a HP Management Processor (MP) without knowing the appropriate IP address. A possibility is to utilize a serial connection to the MP – but this is kinda complicated if you … Read more
Recently I had the problem that my homelab’s Linux machines managed by Puppet were generating dozens of error messages when updating the catalog:
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
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
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
