Linux

vCenter Server Appliance 6.7 as Sub CA with Easy-RSA

This entry was posted in Linux VMware on March 16, 2021 by getSurreal

Ubuntu 20.04 CA with Easy-RSA Install and setup working environment sudo apt updatesudo apt install easy-rsamkdir ~/easy-rsaln -s /usr/share/easy-rsa/* ~/easy-rsa/chmod 700 ~/easy-rsacd ~/easy-rsacp vars.example vars Edit vars, uncomment this section and provide your settings set_var EASYRSA_REQ_COUNTRY “US” set_var EASYRSA_REQ_PROVINCE “California” set_var EASYRSA_REQ_CITY “San Francisco” set_var EASYRSA_REQ_ORG “Copyleft Certificate Co” set_var EASYRSA_REQ_EMAIL “me@example.net” set_var EASYRSA_REQ_OU “My […]

Persistent USB Device Names on Linux

This entry was posted in Arduino Linux Robotics on September 3, 2018 by getSurreal

It’s common when you unplug and plugin a usb device on linux for the device name to change. i.e. from /dev/ttyUSB1 to /dev/USB2. This poses a problem when you want to programmatically access these devices. You can however use udev rules to ensure the device always has a familiar name as a link to the […]

ZFS on CentOS 2

This entry was posted in Linux on November 30, 2012 by getSurreal

There are a couple of options for ZFS on Linux. The user space option, ZFS-fuse, and the kernel mode option, ZFS on Linux. Here we will describe installing the kernel mode ZFS on Linux.

Load Balance Apache with Highly Available Load Balancer Using Just Two Servers 2

This entry was posted in Linux on March 25, 2011 by getSurreal

My objective was to have two apache web servers that were load balanced, but I didn’t want to have a single point of failure load balancer and I didn’t want to spend the resources of two more servers solely for a highly available load balancer. So I combined to run the load balancers on the […]

Linux Boot Delayed by NTP

This entry was posted in Linux on March 1, 2011 by getSurreal

This is usually caused by a DNS resolution problem rather than an actual NTP issue. I power up and shutdown test machines all the time so things are always changing. If the configured DNS is no longer valid then boot up time can be painfully slow. In order to speed up the process there are […]

Easy Setup of Active Directory Authentication for Linux

This entry was posted in Linux on May 12, 2009 by getSurreal

I have painstakingly been through numerous ‘How To’ articles for setting up AD authentication for my Linux servers all of which have never worked perfectly. If you’ve had similar experiences then just forget all those ‘How To’ articles. Download the open source utility from Likewise that does all the work for you. It simply works!

Setup Remote Desktop on CentOS / Red Hat

This entry was posted in Linux Virtual Machine and tagged Linux RDP remote desktop VNC on May 12, 2009 by getSurreal

This is a modified repost for my own documentation from 7ota This tutorial deals with setting up a machine for remote desktop access just like an RDP connection to a windows system but using VNC.

Installing Development Tools on CentOS / Red Hat

This entry was posted in Linux on May 12, 2009 by getSurreal

If you missed installing the Development Tools in the initial install, there is a quick way to load them without installing them individually. yum groupinstall ‘Development Tools’ This will install gcc, make, automake plus otther tools with all their dependencies and libraries.

Configure Software Updater to Usa a Proxy

This entry was posted in Linux and tagged how to howto software updater on May 12, 2009 by getSurreal

To get the Software Updater application in CentOS/Red Hat to use a web proxy server, add the following line in the [Main] section of the /etc/yum.conf file. proxy=http://{proxyserver}:{port}/ Be sure to keep the trailing / slash on the end.

Quick Zabbix Agent install for CentOS

This entry was posted in Linux on April 9, 2009 by getSurreal

extract source on host create user zabbix set passwd for zabbix switch user to zabbix run ./configure –enable-agent switch user to root run make install mkdir /etc/zabbix edit zabbix_agentd.conf and change hostname mv /home/zabbix/zabbix_agentd.conf /etc/zabbix/ mv /home/zabbix/zabbix-agent.init /etc/init.d/zabbix-agent chkconfig –add zabbix-agent chkconfig zabbix-agent on service zabbix-agent start