Technical support job may not be the first choice that comes to mind when anyone considers getting into the tech industry, but it is a great career option. Here we are making a case for technical support jobs and why it is the perfect entry to the tech industry. If you are interested in starting your career in tech, you’re at the right place.
Using rsyslog with CLI
Refer to understanding linux logging for understaning more about syslogs and linux logging
Here we discuss about using rsyslog wih cli, and how it can be used to log messages through CLI and also send priority messages
Log Messages
We can run the command logger to log messages from command line
[root@midas rsyslog.d]# logger "hello this is the message"
[root@midas rsyslog.d]# cat /var/log/messages | grep hello
Sep 29 19:36:38 midas /usr/libexec/gdm-wayland-session[2503]: hello,, this is secured , please dont use if you dont have unauthorized access
Oct 1 21:50:36 midas root[4555]: hello this is the message
[root@midas rsyslog.d]#Sending rsyslog messages with priority
Priority is a critical part of logging, we need to set the priority of the message basis its severity.
Emergency Priority
Messages with emergency priority are configured such as they get rerouted to console, terminals, and ssh sessions. rsyslog allows such messages to be sent through cli which allows them to be immediately viewed by the other uses.
Run the following command from any terminal
[root@midas rsyslog.d]# logger -p emerg "this is the emergency message"You will get following message on all the terminals
[centos@midas ~]$
Broadcast message from systemd-journald@midas (Sat 2022-10-01 21:55:43 IST):
root[4607]: this is the emergency message
Message from syslogd@midas at Oct 1 21:55:43 ...
root[4607]:this is the emergency message
Understanding Linux Logging
Linux operating system is a popular choice for servers, logging of operating system, application, and base system events becomes crucial when hosting large commercial applications, Linux provides, multiple logging options, to help administrators and application support teams to record and track important events and assess the performance of he system and overall setup. here we will try to understand key logging features as made available by Linux OS
Default Network Ports for Common Services
Today all computers are interconnected and have to communicate with each other over a network. before passing this information these systems first establish a connection each end of which is a socket, A port is a logical address that is assigned to a specific service on the computer, and along with the IP address, it creates this socket, In this article, we understand more about ports and the common default or well-known ports used by services.
Linux Package Management
Linux provides multiple package management tools to simplify the process of package installation and upgrades, in this blog we look at RPM and YUM, and how they can be used for package management on Redhat flavour linux distributions