Centos – Software Effect Enterprises, Inc

DRBD on Centos

Posted on March 26, 2017 by SEEIDecember 30, 2020

Installation Centos 7 rpm –import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm yum -y install drbd84-utils kmod-drbd84 Centos 6 rpm –import http://elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm rpm –import ‘http://keys.gnupg.net:11371/pks/lookup?search=0x0608B895&op=get’ yum -y install drbd84-utils kmod-drbd84 Configuration create /etc/drbd.d/drbd1.res resource repdata { protocol … Continue reading →

Could not apply stored configuration to monitors

Posted on December 6, 2020 by SEEIDecember 6, 2020

You log onto your linux system and you get the message “Could not apply the sotred configuration to monitors” Start a bash prompt cd ~/.config mv monitors.xml monitors.xml.zzz Log off and log back on again

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RDesktop on Centos

Posted on November 9, 2015 by SEEIAugust 10, 2020

Centos 7 yum -y install epel-release yum -y groupinstall “GNOME Desktop” yum -y install xrdp xorg-x11-xinit firewall-cmd –permanent –zone=public –add-port=3389/tcp firewall-cmd –reload systemctl start xrdp.service systemctl enable xrdp.service Centos 6 rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm wget -O epel6.key.txt ‘http://keys.gnupg.net:11371/pks/lookup?search=0x0608B895&op=get’ rpm –import epel6.key.txt … Continue reading →

Custom status line in vim

Posted on April 14, 2020 by SEEIApril 14, 2020

Add the following three lines to the end of either /etc/vimrc or ~/.vimrc set paste set statusline=%F%m%r%h%w\ [FORMAT=%{&ff}]\ [TYPE=%Y]\ [ASCII=\%03.3b]\ [HEX=\%02.2B]\ [POS=%04l,%04v][%p%%]\ [LEN=%L] set laststatus=2 Will the following to the bottom of your vim session: ~/x.txt [FORMAT=unix] [TYPE=TEXT] [ASCII=000] [HEX=00] … Continue reading →

Mate on Centos 8

Posted on October 29, 2019 by SEEIMarch 10, 2020

I wanted to get Mate installed on my Centos 8 system. I had to dig around a bit but I found the info I needed. Keep in mind this is an “unofficial” Centos 8 repository and if you have … Continue reading →

SSH WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

Posted on December 22, 2019 by SEEIJanuary 3, 2020

You go to ssh to a system and you get the following message @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: POSSIBLE DNS SPOOFING DETECTED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ The ECDSA host key for server.domain.com has changed, and the key for the corresponding IP address 10.128.15.2 is … Continue reading →

Show available wifi networks

Posted on November 18, 2019 by SEEINovember 18, 2019

nmcli dev wifi nmcli -f ALL dev wifi For more information see here

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Edit Transport Maps On Postfix

Posted on May 8, 2015 by SEEIMarch 7, 2019

If you need email delivered to a specific server for selected domains you do the following: As root, edit the /etc/postfix/main.cf. Find (or add) the line that starts with transport_maps= If it does not exist, add the line “transport_maps=hash:/etc/postfix/transport. If … Continue reading →

IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

Posted on December 8, 2018 by SEEIDecember 8, 2018

You get the above message when running ssh. The issue is, you have connected to this host/ip in the past and the machine you are connecting to has been replaced and/or lots of updates have been done to it. If … Continue reading →

ssh fails to connect with debug1: expecting SSH2_MSG_KEX_ECDH_REPLY

Posted on November 11, 2018 by SEEINovember 11, 2018

Running ssh across a vpn connection I started having my ssh sessions fail to connect. After starting ssh with the “-vvv” option, the session would timeout after getting a debug1: expecting SSH2_MSG_KEX_ECDH_REPLY After doing some research, I found other people … Continue reading →