Linux

Amazon CloudFront 7
I found a great post by Clay Loveless who wrote a PHP script to batch invalidate files files on an Amazon Web Services CloudFront distribution. You rock, Clay. Amazon doesn’t even let us do that (yet?) via the AWS Mangament Console. Until now, when I wanted to manually invalidate a […]

Simple CloudFront Invalidation of a Single File via HTTP

This entry was posted in Linux Reference Technology and tagged Amazon browser CloudFront distribution HTTP invalidate invalidation PHP simple single file URL on by (updated 3597 days ago)
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This is one of those blog posts that’s more written for my own benefit to refer to later than for the benefit of the Web-at-large, but if someone else happens to stumble upon it and it helps you out, then cool. 🙂 I had to migrate a Fedora box (the […]

How to set up two NICs on different subnets with ...

This entry was posted in Linux Reference Technology and tagged CentOS default gateway default route dual NICs eth0 eth1 Fedora ifcfg-eth0 ip route add ip rule add NIC persist policy routing table reboot remain route-eth0 rt_tables static route subnet on by (updated 3832 days ago)
DKIM Test Message 145
For those who want or need to compile and install OpenDKIM from the source code, you can follow the instructions I wrote in this article. If you’re looking for the fastest and easiest way to get OpenDKIM running on a RedHat or CentOS system, I currently maintain the OpenDKIM package in […]

Installing OpenDKIM RPM via Yum with Postfix or Sendmail (for ...

This entry was posted in Linux Reference Technology and tagged CentOS DKIM dkim-filter dkim-milter dkim-proxy Fedora Linux OpenDKIM opendkim-genkey opendkim-milter opendkim.conf Postfix RHEL rpm sendmail yum yum opendkim on by (updated 3228 days ago)
WRT54G 12
Like many owners of the ubiquitous Linksys WRT54G wireless router, I like to run aftermarket firmware on my device to unlock more of this router’s potential. I use one as my primary wireless router in my house, but I also use some as wireless Ethernet client bridges and wireless repeaters. […]

Bricked WRT54G with Blinking Power Light. Hard reset? TFTP? Nope ...

This entry was posted in Linux Reference Technology and tagged blinking power light bricked bricked router DD-WRT Linksys router Tomato WRT54G on by (updated 4887 days ago)
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A while back, I noticed a recurring error in my maillog that read: postfix/smtp: certificate verification failed for gmail-smtp-in.l.google.com[74.125.53.27]:25: untrusted issuer /C=US/O=Equifax/OU=Equifax Secure Certificate Authority If you’re seeing this too, there’s an easy fix.

Fixing Postfix “certificate verification failed for gmail untrusted issuer” Error ...

This entry was posted in Linux Reference Technology and tagged certificate certificate verification failed Equifax gmail untrusted issuer OpenSSL Postfix SSL Certificate Thawte on by (updated 3832 days ago)
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If you have an email address, then it’s almost certain that you’ve had to type it into at least one online form. And if you’re like most, you’re required to do it on a regular basis. One way to help track whether that email address gets shared (and to be […]

How to use Address Tagging ([email protected]) with Postfix

This entry was posted in Linux Reference Technology and tagged address tag address tagging Postfix recipient delimiter recipient_delimiter SPAM user+tag [email protected] user-tag on by (updated 5023 days ago)
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This is another one of those articles I write mainly so I can reference it later to help me remember how I got something working, but if it helps someone else trying to get Amavis, ClamAV, and SpamAssassin working with Postfix on Fedora, then great!

Tips for installing Amavis-new, ClamAV, and SpamAssassin using Postfix on ...

This entry was posted in Linux Reference Technology and tagged Amavis-new ClamAV Fedora Fedora 12 Fedora Core 12 Postfix SPAM SpamAssassin on by (updated 4946 days ago)
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You don’t need a Windows Media Center PC to share pictures, videos, or music with an Xbox 360. If you’ve got a Fedora / RHEL/ CentOS box on your home network and you’d like to use it as a UPnP and DLNA Media Server so that you can stream files […]

How to set up uShare media server on Fedora / ...

This entry was posted in Linux Reference and tagged audio CentOS DLNA Fedora GeeXboX libupnp Linux media server media sharing pictures PlayStation 3 PS3 RHEL streaming UPnP uShare video Xbox Xbox 360 on by (updated 3832 days ago)
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Before proceeding with this tutorial, and at the risk of possibly overstating what is obvious to some, I want to make three things clear:

How to get DKIM and DomainKeys working with Postfix on ...

This entry was posted in Linux Reference Technology and tagged CentOS CentOS 5 CentOS 5.5 CentOS 5.x dk-milter DKIM DomainKeys DomainKeys Identified Mail OpenDKIM opendkim-milter Postfix RHEL RHEL 5 RHEL 5.5 Sender Policy Framework sendmail signed SPF on by (updated 3832 days ago)
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This blog post builds on the same workaround explained in my older post about how to install the 32-bit version of Dell OMSA 6.3 on a 64-bit version of RHEL / CentOS 5.5 on a PowerEdge server so you can manage a PERC 4 RAID adapter. Dell’s newer OMSA 6.4 […]

“No controllers found” fix: set up Dell OMSA 6.4 32-bit ...

This entry was posted in Linux Reference Technology and tagged 32-bit 64-bit CentOS CentOS 5.5 CentOS 5.x Dell No controller found No controllers found OMSA OMSA 6.4 OpenManage PERC 4 PowerEdge RHEL RHEL 5.5 srvadmin Storage Manager yum on by (updated 3832 days ago)
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UPDATE 7/11/15: The following procedure will work on RHEL/CentOS 7, 6, and 5 systems to upgrading from those systems’ default versions to Postfix 3.02. CentOS (a non-commercial clone of RedHat’s RHEL) is my server operating system of choice because it’s extremely stable and widely-used. One of the reasons it’s so stable is […]

Building Postfix on RHEL / CentOS from Source

This entry was posted in Linux Reference Technology and tagged binaries build CentOS CentOS 5 CentOS 5.5 CentOS 5.x CentOS 6 compile Postfix Postfix 2.3.3 Postfix 2.6.6 Postfix 2.8 Postfix 2.9 Redhat RHEL rpm source on by (updated 3440 days ago)
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A few months ago, I wrote a product review for the ecobee Smart Thermostat (along with complete installation instructions and photos) which had I purchased to remotely monitor and control the thermostat in my Utah house while I was away. Overall, my review of the ecobee was

Installing my 2nd ecobee and Using Group Admin Features

This entry was posted in Home Theater & Automation iPhone Linux Product Reviews Technology and tagged ecobee furnace heat pump iPhone remote thermostat smart thermostat thermostat WiFi WiFi thermostat on by (updated 4807 days ago)
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Installing the VNC server in Fedora 14 is a little bit different than I described it for Fedora 12, so here are some updated instructions for setting up VNC in Fedora 14 and connecting to it via Windows over the Internet.

How to Set Up VNC from Windows to Fedora 14 ...

This entry was posted in Linux Reference Technology and tagged Fedora Fedora 14 GNOME KDE PuTTY SecureCRT SSH tunneling TigerVNC VNC VNC Server vncserver vncservers Windows Windows to Fedora VNC on by (updated 3832 days ago)
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As the owner of a couple of vacation homes in climates more extreme than Seattle’s, I’ve had plans for a while now to eventually install thermostats in those houses which I could control remotely. In the winter, I could turn on the heat at my Utah house the day before […]

Product Review: ecobee Smart Thermostat

This entry was posted in Home Theater & Automation iPhone Linux Product Reviews Technology and tagged cooling ecobee equipment interface furnace heating HVAC iPhone remote access remote thermostat smart thermostat thermostat WiFi thermostat on by (updated 4007 days ago)
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If you’re using an AT&T 3G MicroCell to help boost your cell phone range, and you have your 3G MicroCell set up behind a firewall, you should set up the Quality of Service settings (more commonly referred to as QoS settings) on your router to give your voice calls the […]

Set Up QoS in Tomato or DD-WRT for AT&T 3G ...

This entry was posted in iPhone Linux Reference Technology and tagged 3G 3G MicroCell AT&T class of service classification DD-WRT enable QoS firmware Linksys MicroCell priority QoS Quality of Service setup Tomato on by (updated 4287 days ago)
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UPDATE: If you’d like to run the newer OMSA 6.4, please read this updated blog post. If you’d rather install OMSA 6.3, then please continue! If you’re running a 64bit version of RHEL 5.5 or CentOS 5.5 on a slightly older Dell PowerEdge server with a PERC 4 or earlier […]

“No controllers found” fix: set up Dell OMSA 6.3 32-bit ...

This entry was posted in Linux Reference Technology and tagged 32-bit 64-bit CentOS CentOS 5.5 Dell No controller found No controllers found OMSA OMSA 6.3 OpenManage PERC 4 PowerEdge RHEL RHEL 5.5 srvadmin Storage Manager yum on by (updated 3832 days ago)
I’ve been using my Drobo for a couple of years now, but not for anything “industrial strength.” I’ve had it connected to my desktop as  a storage location for music, video, and archiving old website data that I no longer need. But mostly, I just enjoyed looking at the cool […]

I have 3TB (and you don’t!) thanks to my Drobo!

This entry was posted in Linux Mac Product Reviews Technology Windows and tagged Drobo FireWire review on by (updated 5104 days ago)
With the later DRACs, like the DRAC III or DRAC 4, configuration can be a nightmare. I’ve even written a couple blog posts on the later dracs because of their complexity. You have to install software, manage dependencies, edit repository information, etc. It’s not easy, but it’s managable. But I […]

How to Configure or Reset a DRAC II Easily with ...

This entry was posted in Linux Reference Technology Windows and tagged 2450 2550 configure Dell DRAC DRAC 2 DRAC II DRACII password PowerEdge racconf racconf.exe reset reset password on by (updated 5126 days ago)
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The current (as of this writing) versions of Dell’s OpenManage Server Administration software (OMSA) isn’t backward compatible with older hardware like the Dell PowerEdge 2650. However, if you want to install OMSA on a PE2650, you’re in luck. Using the Dell Linux Repository, you can have OpenManage 5.5 (which is plenty […]

How to Install Dell OMSA 5.5 on a Dell PowerEdge ...

This entry was posted in Linux Reference Technology and tagged 2650 CentOS CentOS 5 Dell OMSA OMSA 5.5 OpenManage PE2650 PowerEdge PowerEdge 2650 on by (updated 3832 days ago)
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If you’ve ever tried to reset the password on a Dell Remote Access Card III (DRAC3), then you probably already know that trying to manage a DRAC III in a Linux environment can be frustrating – especially since current (as of this writing) versions of Dell’s OpenManage Server Administration software (OMSA) […]

Reset a DRAC III using racadm on a Dell 2650 ...

This entry was posted in Linux Reference Technology and tagged CentOS CentOS 5.5 Dell Dell Remote Access Card DRAC DRAC 3 DRAC III DRAC3 OMSA OMSA 5.5 racadm reset reset DRAC reset password on by (updated 3832 days ago)