Category Archives: Linux

VMware vCenter Server Appliance Monitoring

In the last years we had multiple problems with our VMware vCenter Server Appliances, because for example the filesystem for the SEAT database ran full. Without having a look at the appliance management interface, you will have to spend much time for debugging your problems. To prevent these kind of problems, I’ve written some scripts… Read More »

VMware PowerCLI on Debian Linux

Getting sick of Microsoft Windows and the ISE, I’ve installed VMware PowerCLI on my Debian Linux today. Everything could be done from your Shell, you do not need to download anything with your browser. Nice stuff – PowerCLI was installed in unter 2 minutes 😉 First you need to add some apt sources and install… Read More »

RRDtool grading graphs

One of my oldest IT articles from about 2005 🙂 Introduction This HOWTO describes how to quickly generate a nice graph, showing you the average ping time off a specific host. This picture is the result we should get: This setup consists of 4 steps * Configfile * RRDcreate * RRDupdate * RRDgraph Configfile The… Read More »

UMTS Modem on Raspberry PI

Problems with Huawei UMTS Modems: Bus 001 Device 005: ID 12d1:1446 Huawei Technologies Co., Ltd. E1552/E1800/E173 (HSPA modem) vs Bus 001 Device 005: ID 12d1:1436 Huawei Technologies Co., Ltd. E173 3G Modem (modem-mode) Solution pi:/root # cat /etc/udev/rules.d/41-usb_modeswitch.rules ACTION==”add”, SUBSYSTEM==”usb”, ATTRS{idVendor}==”12d1″, ATTRS{idProduct}==”1446″, RUN+=”/usr/sbin/usb_modeswitch -v 12d1 -p 1446 -I -M ‘55534243123456780000000000000011062000000100000000000000000000’”