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Could not apply stored configuration to monitors

Software Effect Enterprises, Inc 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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Posted in Centos, Centos 6, Centos 7, Centos 8, Fedora, Mate | Tagged apply, centos, configuragtion, fedora, monitors, redhat

SSH WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

Software Effect Enterprises, Inc 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 →

Posted in Centos, Centos 6, Centos 7, ssh | Tagged host, remote, ssh

ssh fails to connect with debug1: expecting SSH2_MSG_KEX_ECDH_REPLY

Software Effect Enterprises, Inc 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 →

Posted in Centos, Centos 6, Centos 7, Cisco ASA, Linux, ssh

Custom logon prompt for getty

Software Effect Enterprises, Inc Posted on August 1, 2017 by SEEIJuly 16, 2018

Fix your logon prompt for when you are on the console of your Linux server (Centos 6 runlevel 3 or Centos 7 multi-user.target) so that it displays your current ip address Edit /etc/rc.d/rc.local and add the following lines to the end … Continue reading →

Posted in Centos 6, Centos 7

SNMP v3 and Cacti

Software Effect Enterprises, Inc Posted on June 13, 2017 by SEEIMay 20, 2023

A quick synopsis on setting up a Cisco ASA and a Centos 6 or 7 system to use SNMP v3 to be monitored by Cacti Cisco ASA en conf t # create a snmp-server group (needed for SNMP v3) # … Continue reading →

Posted in Cacti, Centos, Centos 6, Centos 7, Cisco ASA, Juniper, Linux, SNMP, SRX | Tagged asa, cacti, juniper, linux, snmp, SRX

Generate a new UUID for ethernet interface

Software Effect Enterprises, Inc Posted on May 12, 2017 by SEEIMay 12, 2017

# uuidgen ifcfg-eth0 e62680c3-f5f5-4f06-b862-68e00e3b4506

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Posted in Centos, Centos 6, Centos 7

Disable Network Proxy Authentication Popup In XRDP

Software Effect Enterprises, Inc Posted on May 12, 2017 by SEEIMay 12, 2017

Disable Network Proxy Authentication Popup There is a specific issue that causes users to receive a popup asking for the root password after logged on. The below workaround will work for CentOS 7.x and 6.x too.   Workaround Create a … Continue reading →

Posted in Centos 6, Centos 7

DRBD on Centos

Software Effect Enterprises, Inc 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 →

Posted in Centos, Centos 6, Centos 7

Installing Google Chrome on Centos 7

Software Effect Enterprises, Inc Posted on October 12, 2016 by SEEIJune 16, 2017

Centos 7 Enable yum repository by logging in as root at a bash prompt, then cut/copy/paste the following: cat << EOF > /etc/yum.repos.d/google-chrome.repo [google-chrome] name=google-chrome – $basearch baseurl=http://dl.google.com/linux/chrome/rpm/stable/$basearch enabled=1 gpgcheck=1 gpgkey=https://dl-ssl.google.com/linux/linux_signing_key.pub EOF You will see the following [root@mycomputer ~]# cat … Continue reading →

Posted in Centos 6, Centos 7, Google Chrome

Using UUID to Mount Disk

Software Effect Enterprises, Inc Posted on July 5, 2016 by SEEIJuly 5, 2016

In linux, hard drive dev assignments can get changed between reboots – especially with external/removable drives. This means using /dev/sdX or /dev/hdX is not the best way to mount a drive that needs to be mounted every time at boot. … Continue reading →

Posted in Centos, Centos 6, Centos 7, Fedora, Linux

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