The multipathd -k command is an interactive interface to the multipathd daemon. Entering this command brings up an interactive multipath console. After entering this command, you can enter help to get a list of available commands, you can enter a interactive command, or you can enter CTRL-D to quit. The multipathd interactive console can be […]
CentOS/RHEL
How to Disable VNC Server from Xinetd in CentOS/RHEL 7
Question: How do I stop the xinetd daemon from starting VNC Server processes? 1. Go to xinetd configuration file /etc/xinetd.d/vnc-server. Modify the file and look for the line disable = no and set the value to yes. # vi /etc/xinetd.d/vnc-server service vnc-server-1 { disable = no socket_type = stream protocol = tcp wait = yes […]
How to Uninstall/Remove GNOME from CentOS/RHEL 7
The GNU Network Object Model Environment, also known as GNOME, is a powerful and easy-to-use environment consisting primarily of a panel, a desktop, and a set of desktop tools with which program interfaces can be constructed. GNOME is designed to provide a flexible platform for the development of powerful applications. But sometimes, you may want […]
How to Disable rpc.quotad Service in CentOS/RHEL
The protocol used by rpc.rquotad is an unsecured and obsolete protocol and should be disabled. This security vulnerability is discussed in CVE-1999-9625 and further details can be found in that document. This procedure can disrupt NFS clients relying on disk quotas. To avoid issues, schedule a maintenance outage and stop these NFS clients. For CentOS/RHEL […]
How to monitor NVME drives on Centos 6
Recently, one of our customers asked us to upgrade his server hardware. Unfortunately, they can’t update their software and We had to install Centos 6 with new NVMe drives. But, We need to monitor them and default smartmontools don’t support NVMe on Centos 6.X. Also, you can read about how to install smartmontools in the […]
Monitor HDD and SSD with smartd and smartctl
Basic information smartd is a daemon that monitоrs the Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T) system that is built into most ATA/SATA and SCSI/SAS drives and solid-state drives. smartctl is a command-line utility designed to perform SMART tasks such as printing the SMART self-test and error logs, enabling and disabling SMART automatic testing, and initiating […]
Intel I219-LM Centos 6 network failed to start
Introduction If you are using old software on new software you can receive some weird errors. Today We will describe an error with Inle l219-LM and CentOS 6 error. For some reason from time to time, Centos 6 fails to start network when using the Intel I219-LM network card. We’ve faced the following issue with […]
How To Install Python 3 On CentOS 7 Using SCL
Introduction Python is an interpreted, high-level, general-purpose programming language. Created by Guido van Rossum and first released in 1991, Python’s design philosophy emphasizes code readability with its notable use of significant whitespace. Its language constructs and object-oriented approach aim to help programmers write clear, logical code for small and large-scale projects. It’s an incredible programming […]
CentOS/RHEL7 – Tuned Profiles Oracle
Tuned is a set of tools and a daemon that tunes your system’s settings automatically depending on its usage. It periodically collects data from its components through plugins, which it uses to change system settings according to the current usage. You can find the system’s tuned profiles used in /lib/tuned/. When you create your own, […]
tuned-adm and Oracle
To offer the best possible performance right from the start, CentOS/RHEL 7 and 8 come with tuned. It offers a daemon that monitors system activity and provides some profiles. In the profiles, an administrator can automatically tune a system for the best possible latency, throughput, or power consumption. Based on the properties of an installed […]