Linux Archive
25 Jun 2015
Netstat Commands for CentOS/RHEL
By Anuket Jain On 25 June 2015 In Linux
Netstat (network statistics) is a command line utility that can be used to list out all the all the tcp, udp socket connections and the unix socket connections. So by checking an open port 80 you can
24 Jun 2015
How to use Traceroute Command in CentOS/RHEL
By Anuket Jain On 24 June 2015 In Linux
In processing, traceroute is a computer network diagnostic tool for showing the path and measuring transit delays of packets over an Internet Protocol (IP) network. The historical backdrop of the course is recorded as the round-trip times
23 Jun 2015
Network Configuration and Troubleshooting Commands
By Anuket Jain On 23 June 2015 In Linux
The PCs and devices which are a part of the network can “talk” to one another and exchange data. In addition the PCs and gadgets which are connected, different devices are frequently required for the system to
22 Jun 2015
Top command in CentOS/RHEL
By Anuket Jain On 22 June 2015 In Linux
Top shows the main 30 processes on the system and periodically updates this information. It can show system summary information as well as a list of task presently being managed by the Linux kernal. It can sort
21 Jun 2015
Steps to identify and solve a performance issue
By Anuket Jain On 21 June 2015 In Linux
Performance is the major issue on the Linux Server that we are facing frequently. Yes, I’m discussing a sluggish server that may have high load. Before I disclose how to analyze and fix high load however, let’s
20 Jun 2015
Linux Performance Monitoring and Tuning Introduction
By Anuket Jain On 20 June 2015 In Linux
Linux system administrators should to be capable in Linux performance monitoring and tuning. This article gives an abnormal state outline on how we should approach performance checking and tuning in Linux, and the different subsystems that should
19 Jun 2015
Some more command to use SAR command for system monitoring
By Anuket Jain On 19 June 2015 In Linux
The main thing that we need to understand regarding SAR is that, everything is done using a cron. By default in many Linux distribution you will have a file named /etc/cron.d/sysstat. Some more command to use SAR
18 Jun 2015
How of use SAR command for system monitoring in CentOS/RHEL
By Anuket Jain On 18 June 2015 In Linux
The primary thing that we have to do is check and confirm whether you have SAR utility installed on the machine. Which can be checked by posting all rpm’s and finding for this utility. CPU Usage of
18 Jun 2015
How to install and configure SAR on CentOS/RHEL
By Anuket Jain On 18 June 2015 In Linux
System Activity Reporter (SAR) is an important tool that helps system administrator to get a review of the server machine with status of different critical metrics at different points of time. Using sar you can monitor performance
18 Jun 2015
Keep a detailed audit trail of what’s being done on your Linux systems
By Anuket Jain On 18 June 2015 In Linux
Interruptions can happen from both approved (insiders) and unapproved (outsiders) users. My own experience demonstrates that unhappy user can harm the system, especially when they have a shell access. A few users are little smart and remove