Oh no ! You have forgot or mistyped your root password on Centos 8 what do we do ? Boot to the grub menu Go to the line which beings with “kernal auto” press “CTRL+E” to go to the end…
Bash Script To Rotate A Log file To A Time Stamped File – Linux
A bash script that rotates a file (logfile.txt) to a timestamped file(logfile_20180719.txt), which could be invoked by cron every 24 hours. Move the created bash file to newly created scripts folder. mv /home/hass/rotate.sh /var/scripts/rotate.sh Change permission to allow +x (execute…
Monitoring Hikvision DS-2CD2365G1-I Camera Via SNMP with Nagios
We can view what MIB/OID information is available to pull via SNMP by running the below command. Information we can pull into Nagios via the check_snmp service is shown. Lets change to our libexec folder to confirm results before adding…
Monitor Mikrotik Router With Nagios Via SNMP.
I have been moving my Zabbix Monitoring system over to Nagios Core, running on Centos 8 within a ESXI host on a Dell T310 server. First of all we need to enable SNMP on the Mikrotik Router and add the…
Simple Windows PowerShell & .BAT Script to Pings Hosts defined in a .txt file ( Windows)
We recently had a load of CCTV camera on various networks, we needed to determine which cameras where up and which where down. To get around this issue as the IP addresses belonging to different network ranges, rather than using…
RHEL 8 LABS Adding Repo
Adding your own repos to your Centos 8 server as part of RHCSA Certification.
Installing VirtualBox on Linux Mint & RHEL 8 for RHEL8 – RHCE Certification
First of all we need to switch to root. We then add the virtualbox repo, with the below commands. For the exercises i have been following as part of RHEL 8 certification, by https://github.com/rdbreak/rhcsa8env i will also be installing the…
Monitoring Cisco 3560 with Nagios
Everything in this quick tutorial has been done using Centos 8. I am sure if you are here you are already aware of what Nagios is. Nagios is a performance monitoring tool, that can we used for network and endpoint…
Getting started with Ansible
In this guide i will be using Centos 8, follow the below in order to install Ansible on your system. Next we are ready to install Ansible. My preferred method is to use the Official RHEL repo, first we need…
Mikrotik and FreeRadius for Wireless Authentication
FreeRadius is a Radius server responsible for what they call “Triple A” Authentication / Authorization / Accounting, it easily allows system administrators to manage services on a user by user basis. Imagine the scenario where we have a customer, that…