Here is a video I created to asisst in copying a system out of the cloud into on premesis.
Read More →Author: Steven Protter
Replicating an NDC database cluster
Centos 7.7 and QEMU
Read More →Setting up a new qemu network
KVM Virtualization made easy. We needed a network to match what we run production in google compute in. So we used a gui and built it. Click forward
Read More →Upgrading mariadb cluster lab
Step 1: Back up your data. Step 2: BACK UP YOUR DATA. Step 3: BACK UP YOUR FRACKING DATA (Never watched the new Battlestar Galactica this is an f-word replacement). You might lose your data. Read the procedure and process and RELEASE notes on Mariadb web site. link as of this publish date: https://mariadb.com/kb/en/upgrading-from-mariadb-104-to-mariadb-105/ There […]
Read More →The final score: 283 out of 300. Anyone interested in buying a test simulator?
I passed with better than 90% of the possible points. Due to a flaw in the test design I believe that a perfect 300/300 was impossible because I chose to install the GUI. I have developed a test simulator with a scoring system that closely mimics Red Hat’s scoring systems. I am in beta right […]
Read More →RHCSA exam taking techniques to assist in validation & debugging
If possible go graphical. This makes opening multiple terminal windows easier. But there are more than one interface available in non-graphical mode. ctrl-alt-1-9 or function keys will give you as many debugging interfaces as you need. What do you enter in your debugging interface/session? There are other logs that might be helpful but these did […]
Read More →Set default boot mode to graphical rhel7
As root: systemctl set-default graphical.target who -r to see current boot mode. I’m sitting here in an exam center waiting to take the test while red hat resolves a technical glitch. I had some technical anxiety so I looked this up.
Read More →LDAP Integration: Question 13 or 14
As suspected it was my back end classroom server configuration that was the issue. Firewall rules in place: yum -y install autofs systemctl enable autofs systemctl start autofs systemctl status -l autofs showmount -e classroom.example.com
Read More →Debug amavisd startup
If you have messed around with your amavisd.conf file and the daemon wont start here is a tool to discover the problem: /usr/sbin/amavisd -c /etc/amavisd/amavisd.conf debug Tested on CentOS 7 with ISPConfig. If you have an issue this will help you pinpoint it [root@instance-4 postfix]# /usr/sbin/amavisd -c /etc/amavisd/amavisd.conf debug Sep 28 06:56:04.544 instance-4.c.ndcshalom1965.internal /usr/sbin/amavisd[9764]: logging […]
Read More →Mail stuck inbound ispconfig 3 galera cluster
Nail is stuck in the inbound que complaining about sql/mysql connect issues: Make sure hard coded passwords are the same in ispconfig.inc.php in /usr/local There are two config files with two password entries each they must be all the same. The password entries fo the mysql-*.cf files and there are a lt must be the […]
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