YUM and DNF updates are sensitive to interruption. Meaning, that when interrupted, there is a strong change that the database will become corrupted and the next yum attempt will result with a DB_RUNRECOVERY Fatal error. As scary as that may appear, it resolution is simple. Sensitive as it may be, it is quite resilient. Source(s)
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It was an accidental and welcome discovery to find that there is an available dark theme that may easily be applied to your Proxmox install and looks fantastic. There are two available methods for installation, one is python and the other via bash. The python installation is deprecated in favor of the bash script. It should also be noted that…
Read More » While creating a test environment for three Proxmox servers, one of the servers was cloned before realizing it was easier and faster to simply build up the next virtual machine. Everything looked fine except when setting up the ceph monitors, managers, and meta data servers, the cloned server had two entries. One was good with the green checkmark and another…
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Since CentOS Linux 8 will lose support on December 31, 2021 and the focus will be solely on CentOS Stream 8, which is continuously delivered distro that tracks just ahead of Red Hat Enterprise Linux (RHEL) development, positioned as a midstream between Fedora Linux and RHEL, many are looking for alternatives. Thankfully they exist and there are conversions that I…
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After a CentOS 8 to Rocky Linux 8 conversion attempt that went surprisingly well, there appeared to be an amanous error message that presented itself each time a simple command of yum list installed was issued. Problem Problem 1: conflicting requests – nothing provides module(perl:5.26) needed by module perl-DBD-MySQL:4.046:8030020210430225703:3a70019f-0.x86_64 Problem 2: conflicting requests – nothing provides module(perl:5.26) needed by module…
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Older versions of ESXi IIRC allowed for the direct export to ova. I recently came across a process that is not supported; however, is supposed to allow for the copy of ovftools over to a Proxmox and ESXi servers. There exists an extracted version of VMware ovftool on github. However, it is version 4.1.0 and expect to encounter issues with…
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Rocky Linux is here and more importantly, Rocky Linux 8.4 is just released. According the Rocky Linux forums, this may be another release candidate as this was posted on May 28, 2021, “.he plan now is to get a 8.4 RC out there and then push that to a GA release. We learned a lot from our 8.3 RC, and…
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By default when installing CentOS 8, the BIOS will be MBR. This can be changed while installing by adding the inst.gpt to the vmlinuz line during the installing process. However, if you forget to do so, it is not too late. For fun, I followed this process that I found online and it worked without damaging the virtual machine. I…
Read More » After months of waiting and after refreshing the twitter feeds, news groups, Reddit, and Rocky Linux homepage, Rocky Linux is now available for download. DistroWatch.com doesn’t even have it listed yet as it is so new. While it is a Release Candidate, it is only hours old at the time of this writing 7:32 AM on May 1, 2021! I…
Read More » Proxmox Backup Server (PBS) is capable of using NFS datastores although the official documentation would prefer the use of local storage. For one reason or another, there was the desire to use a NFS datastore. I tried several different NFS servers, Synology, NetGear, and TrueNAS CORE. The Synology setup was the first of the three I actually got working, mainly…
Read More » The Proxmox Server offers native backup capabilities. It can be slow, but figured out a way to tweak it with PIGZ and that offered great improvements. However, the nightly backups are complete virtual machines. Proxmox Backup Server (“PBS”) can be used to facilitate backups incrementally and offers pruning and so many other backup related features. The setup seems to require…
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A recent migration to a CentOS 8 server from CentOS 6 did not go as smoothly as planned. As well as imagined, everything was upgraded along the way. PHP 5.x to PHP 7.4 for example. One web application had been running smoothly on PHP 5.x for many years. However, after the migration, complained that php-mcrypt needed to be installed. The…
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By default AWX installs the database in the /tmp directory. This can be avoided during install by modifying the inventory file. However, if by chance AWX was installed using the default settings, you will eventually have a corrupt database and a Server Error page will be displayed. If you are fortunate to have a snapshot of a virtual machine or a…
Read More »The Secure Shell, more commonly referred to as ssh, is a cryptographic network protocol for operating network services securely over an unsecured network. Typical applications include remote command-line, login, and remote command execution, but any network service can be secured with SSH. Over the years, a more typical solution is to create a key type of rsa, which is the…
Read More »To gain CMMC compliance, the Red Hat Enterprise Linux 8 operating system or any of it’s variants must enable FIPS mode. FIPS mode can be a difficult hurdle, where it doesn’t have to be. While researching a recent problem that was encountered on a FIPS enabled system, more questions than answered were raised. As you progress through this article, you…
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The scap-security-guide changes in format with each new guide. CentOS 8 is not fully represented within the guide. The XMLs provided differ in context, so the RHEL XML must be used to generate the report but requires a small patch to do so. The CUI Profile The ssg-rhel8-ds-1.2.xml contains the profile cui, while the one for ssg-centos8-ds-1.2.xml does not. [root@admin…
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The goal of this guide is to serve as a precursor to the installation of ceph nautilus on CentOS 7. This process was completed on a virtual environment and has been reproduced several times before this writing. Ceph is an open-source software storage platform that replicates data and makes it fault-tolerant. A good definition and intro to ceph may be…
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