Emil CHERICHES – computer passionate, electrician, handyman

Flash Tasmota on the Sonoff Mini – Linux user experience

August 14, 2020 Emil C

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The module supports the new DIY mode from Itead. This is probably a good ideea poorly implemented. The firmware on itself uses a kind of restfull API which is much slower than MQTT and more important Home Assistant does not yet support it (at leas not natively). The initial version…

DokuWiki a simple solution to sorting documentation

July 6, 2020 Emil C

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In the IT world you can’t just remember everything you ever do, so you need a way to set a trail of what you do. Some people write journals and some (me included) write their documentation in a wiki. Wiki today means Wikipedia, Wikipedia runs MediaWiki software which is a…

Tips & Tricks Apache php

I discovered Wireguard

April 25, 2020 Emil C

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My new favorite piece of technology is right now Wireguard. I love how easy it is to spin it out, crypto looks right, performance is great. See you soon with more posts…

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Using Let’s Encrypt with CentOS (for now)

January 12, 2016 Emil C

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CentOS 6 users, because Let’s Encrypt requires at least Python 2.7 to run you need to install a newer version. Luckily you can install 2.7 version aside to the 2.6 version already in your system. To do that you need to put in IUS repository. The installation process is actually…

security Apache CentOS

Let’s Encrypt is Trusted

October 21, 2015 Emil C

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Both Let’s Encrypt intermediate certificates, Let’s Encrypt Authority X1 and Let’s Encrypt Authority X2, received cross-signatures. Web servers will need to be configured to serve the appropriate cross-signature certificate as part of the trust chain. The Let’s Encrypt client will handle this automatically. More info on Let’s Encrypt blog.

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Debconf 15

August 16, 2015 Emil C

It looks like Debconf is on theese days. You can watch it live at here or there’s a video archive of what is happening.

News Debconf debian

High Availability Load Balancer

August 12, 2015 Emil C

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Suppose you really need a highly available service. Normally you would put a load balancer in front of a server farm. But what happens when the load balancer fails? Well, we could have to load balancers, one which is actually active and the second one kicking in when first one…

linux Cluster High Availability VRRP

Error: Can’t open display: localhost:10.0

February 4, 2015 Emil C

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I use X Forwarging over SSH for several things to manage, such as virtual machines with “virt-manager”. Today, when I wanted to run a graphical tool on one of the servers I kept getting this error. Error: Can't open display: localhost:10.0 I verified all the possible configurations issued, launched the…

Tips & Tricks linux ssh

Chasing Ads

January 29, 2015 Emil C

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I hate ads. Don’t get me wrong, I understand why they’re here, I understand how the system works, I just hate when ads get in your way. For Chrismas, Santa and my Piggy Bank decided to make me have a Galaxy S5 Duos (Duos stands for Dual SIM). It all…

Phones & Tablets adb ADS Android

Quick TIP: Postfix Reverse lookup

October 31, 2014 Emil C

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When your maillog on a CentOS/*EL machine looks like this: mail postfix/smtpd[19345]: connect from unknown[XXX.YYY.ZZZ.QQQ]

Tips & Tricks CentOS Postfix