There are so many articles on how to install ceph with ceph-ansible. Sadly, as ceph versions change, so does the process for installation. This distinction is rarely made within in the instructions and because of that, the install is doomed to fail and the installer disenfranchised. This article should provide the process needed to install on CentOS 7 ceph nautilus…
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It has been announced that CentOS 8 will be End Of Life in Q4, 2021. It will be phased out in favor of the CentOS 8 Stream, which falls between the Fedora and RHEL distributions. Instead of CentOS builds after RHEL updates, the CentOS 8 will be the development track for RHEL. With that in mind, there is a path…
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CentOS 6 finally came to end of life (“EOL”) as of November 30, 2020. A rude awaking if you haven’t been paying attention and attempt a yum update to be presented with an error message. CentOS does maintain a vault. There is a CentOS-Vault.repo that exists for earlier versions of CentOS 6, but with a few modifications, you can still…
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An instance of CentOS 8 is not running on a Dell or HP Enterprise level server; however, is running on a VMware Workstation on a Windows 10 laptop presents the [Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR 38d is 3) message. Every article on the internet suggests live with the message it is harmless. While that maybe the…
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Throughout the years, Maxis SimCity has evolved from version 1.x for DOS to Windows (2013). Somewhere along the way, Maxis SimCity lost its way with SimCity (2013), but I won’t hold that against them. The go to version has always been the original SimCity for DOS. With programs like DOSBox, this game is still a capable game. It has its…
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I have written a couple of installation scripts to install WordPress throughout the years. This is the latest in that series to install WordPress 5 on a minimal install of CentOS8. Among the differences between this script and previous ones, is that this will be installed in it’s own directory /wordpress rather than /. Basically, write the script as seen below,…
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Bitbucket is a web-based version control repository hosting service owned by Atlassian, for source code and development projects that use either Mercurial or Git revision control systems. This is one of several products in this arena along the likes of Gitlab and Github. This is one way to script out a quick installation on a minimal install of CentOS 8….
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There are many articles on this subject, but you need to read many articles to complete a successful Spacewalk installation. There are fewer articles that tackle Spacewalk beyond the installation. Hopefully, this will fill in some of those blanks. What it is. Spacewalk is an open source Linux systems management solution. Spacewalk is the upstream community project from which the…
Read More »I have had several of my scripts break, that had worked on CentOS 6 and CentOS 7, when applying them to CentOS 8. Here are a couple of examples and their fixes. curl A script inspired by 802.1x in Lion for Macbook Air needing AD domain authentication and a script on GitHub contained a line similar to the following. # curl…
Read More »You may find yourself in front of a Gitlab install and completely forgot the password. The following method works flawlessly, so I haven’t changed any of the steps. To reset your root password, first log into your server with root privileges. Start a Ruby on Rails console with this command: gitlab-rails console -e production Wait until the console has loaded….
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Ansible Tower (formerly ‘AWX’) is a web-based solution that makes Ansible even more easy to use for IT teams of all kinds. It’s designed to be the hub for all of your automation tasks. Installation There are quite a few good scripts that are already circulating around. This script resolves a few issues with the others I have seen. I…
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DUO is a self-described “easy-to-use” two-factor authentication method that protects access to federated cloud and on-premises applications and servers. DUO offers several pricing plans and a free tier. The free tier is quite generous providing dual factor authentication to up to 10 users. This article assumes that you have created a DUO account, logged into the admin dashboard and ready…
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In this exercise, Tomcat 9 will be installed with OpenJDK 8 using a self-signed certificate using the http2.Http2Protocol protocol. I’ve updated and simplified the script since my last attempt at a similar Tomcat 9 installation. I have also added SELinux context, log rotation, and speed! Enjoy Tomcat Screenshot from an earlier version, but the end result is the same.
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MySQL 5.6.xx logs may contain a “Note” message that the “Plugin ‘FEDERATED’ is disabled.” The plugin has been available since MySQL 5.0.3 and is a storage engine that accesses data in tables of remote databases rather than local tables. There is a resolution to this. Log Entries 2019-11-12 21:52:18 2338 [Note] Plugin ‘FEDERATED’ is disabled. Resolution Then edit the my.cnf…
Read More » MySQL 5.6 logs may contain a “Note” message that the RSA private key file not found … and [s]ome authentication plugins will not work. There is a resolution to this. Log Entries 2019-11-12 21:22:15 897 [Note] RSA private key file not found: /var/lib/mysql//private_key.pem. Some authentication plugins will not work. 2019-11-12 21:22:15 897 [Note] RSA public key file not found: /var/lib/mysql//public_key.pem….
Read More »One virtual machine for some unknown reason is utilizing thin provisioned logical volumes. This one virtual machine is the only one in a series of virtual machines. In any case, I didn’t understand what it meant to have a system running thin provisioned logical volumes until it crashed and I couldn’t revive it. Fortunately, there was a snapshot that the…
Read More »Sudo Flaw Permits Restricted Root Runas Access. sudo configured to allow a user run commands as another user with the ALL keyword using the runas command specifying the user ID -1 or 4294967295 can run commands as root even when explicitly disallowed. The PAM session will not run for the command. This vulnerability is assigned as CVE-2019-14287 and affects sudo…
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