Dr. Sven Seiler|Theodor-Blank-Allee 22, 44309 Dortmund
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This category deals with everything related to Linux servers and technology issues of web hosting.
Most likely this will be DevOps centered, with focus on the operational part and virtualization (VMWare product stack).

Let’s Encrypt is Trusted

Let´s encryptMit dem 19. Oktober werden die Zertifikate von Let´s Encrypt nun in allen wichtigen Browsern als vertrauenswürdig akzeptiert. Damit ist der Grundstein gelegt um eine weite Verbreitung finden zu können. Einige Jahre lang verwende ich nun schon Zertifikate von Startssl oder aber CAcert. Leider haben sich die Anbieter nie wirklich etablieren können. Mit Let´s Encrypt sehe [...]

2019-01-03T16:46:58+01:00Tags: , , , , |

Updating Amazon AWS Security Group via CLI

When there is need often to log in to your AWS hosted EC2 instance, and you care at least a bit about security, one will need to update the Security Group "Inbound rules" to allows SSH connection from your current IP address to your Amazon AWS hosted server. You have two option to do so: [...]

2019-01-03T16:46:59+01:00Tags: , , , , |

Chocolatey

I lately stumpled upon "Chocolatey", that is according to its developers, "kind of like apt-get, but for Windows". Chocolatey makes use of the Windows powershell and is very easy to use. It is worth to get more into it.  I used it so far to automate the installation of Vagrant based Windows Virtual machines and to [...]

2019-01-03T16:46:59+01:00Tags: , , , |

Vagrant behind a proxy server

If you are using Vagrant behind a proxy server, you should go for installation of vagrant-proxyconf. But how to install this plug-in when you are currently limited by a proxy? Set your proxy on Windows, open a command prompt and enter: set HTTP_PROXY=http://user:password@proxy.domain.tld:8080 set HTTPS_PROXY=https://user:password@proxy.domain.tld:8081 Set your proxy on Linux, open a command prompt and enter: [...]

2015-10-12T00:53:54+02:00Tags: , , |

Conquering new frontiers – Amazon EC2

Starting from today, this webpage will be available through Amazon EC2, powered by the “WordPress by Bitnami (HVM)” and is now relying completely on nginx. Bitnami Wordpress Instance I recommend the plug in All-in-One WP Migration for a painless transfer. This plug in save me maybe hours in migration.

2019-01-03T16:47:08+01:00Tags: , , , , |

Microsoft IE6, IE7, IE8, IE9, IE10, IE11 and Edge

If you are in front end design and are even working for customers in the public sector, you have to most likely guarantee that the web page you are currently designing will be compatible to Microsoft Internet Explorer in all the multiple versions available. You may not need to work with IE6 or IE7, but the IE8 ("The Windows [...]

2019-01-03T16:47:09+01:00Tags: , , , , , , , , , |

Solving performance issues with ESXi 6 (Gen8)

If you have installed to a newer version of ESXi on your Gen8 Micro Server and are now suffering from very low performance disk speed, try the following steps to downgrade to a former hpvsa-driver (scsi-hpvsa-5.5.0-88). Just follow these simple steps: Download the driver and unpack the archive named hpvsa-5.5.0-88.zip Stop all VMs that are currently running [...]

2015-09-23T21:20:19+02:00Tags: , , , , |