CentOS Change Kernel
Download replacement kernel The CentOS6 kernel is replaced with: 2.6.32-504.3.3.el6.x86_64
Change Linux CentOS Ethernet Interface Name to Default eth0
Disable Consistent Interface Device Naming To regain the ethX back, edit the grub file. vi /etc/default/grub Look for GRUB_CMDLINE_LINUX and add or change to the following net.ifnames=0. FROM: GRUB_CMDLINE_LINUX="crashkernel=auto resume=/dev/mapper/cl-swap…
Connect to GNOME desktop environment via XRDP on CentOS 7 & Ubuntu 18
It might not make sense to use RDP to remote linux machines. The speed and performance all are not that good from my point to view. But in certain situation,…
Linux CentOS/Ubuntu Firewall and SELinux
The Linux kernel includes the Netfilter subsystem, which is used to manipulate or decide the fate of network traffic headed into or through your server. All modern Linux firewall solutions…
Linux System Performance Analytics
This post is going to use an java code example to show the process how to analysis linux system performance issue using all kinds of Linux internal commands without other…
Deploy Zabbix Agent into CentOS and Add into Zabbix Server
Zabbix Agent is required to install on all remote systems needs to be monitor through Zabbix server. The Zabbix Agent collects resource utilization data and applications data on the client…
Quickly Deploy Zabbix in CentOS7
Zabbix is a mature and effortless enterprise-class open source monitoring solution for network monitoring and application monitoring of millions of metrics. This post is going to install zabbix4.0 into a…
Benchmark Linux Disk Read/Write Speed
hdparm is a command line utility to set and view hardware parameters of hard disk drives. It can also be used as a simple benchmarking tool. Install hdparm CentOS #…
Some Popular Linux VPS Bench Scripts
Cloud service providers often define host tiers by the allocated resources, but the differences in the underlying hardware, architecture and performance tuning can result in varying capabilities even between similar…
Monit – Linux Open Source System or Process Monitor Program
1. What is Monit? Monit is a utility for managing and monitoring processes, programs, files, directories and file systems on a Unix like system. Monit conducts automatic maintenance and repair…
Linux Virtual Machine PHP Invoked OOM-killer (Out of Memory) Issue
One of my GCP VM is running at f1-Micro type which only has limited memory, 614MB. From syslog, I found it has a PHP invoked OOM killer messages. This usually…