Ansible is App deployment, configuration management and orchestration – all from one system.
It uses no agents and no additional custom security infrastructure, so it’s easy to deploy – and most importantly, it uses a very simple language (YAML, in the form of Ansible Playbooks) that allow you to describe your automation jobs in a way that approaches plain English. Continue reading
Sudo – grant a user with root privileges
Sudo (su “do”) allows a system administrator to delegate authority to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while providing an audit trail of the commands and their arguments. Continue reading
Bootable USB stick is very handy and it seems to easy to create using dedicated applications both under Linus or M$ but let’s set the challenge and try to make it manually from the bare Linux command like. This knowledge may become very helpful in Data Centrer scenarios where servers BIOS need to be updated but no Windows environment is available for the M$ executable to run.
At the end of this tutorial you will see that USB creators tools are quite sophisticated peace of software allowing to create many different systems with a speed of blink of an eye not necessary telling to the user all magic happening under a hood. Let’s start… Continue reading
Hardware in lab
In the part one I will show how to convert Wireless Controller Based Cisco access point into Autonomous mode. Then in the second part I will use it as a site survey device utilizing 10KHz spectrum analyser sensor. Continue reading
This is a guide how to install a bare minimum but usable LXDE desktop in Ubuntu very useful especially in cases like AWS instance desktop environment or virtual machine desktop in VMWARE and Virtual-box. Continue reading
VMware network time synchronization: A walkthrough To configure NTP synchronization, select the host, and on the Configuration tab, select Time Configuration under Software. You’ll now see the existing time synchronization status on that host. Next, click Properties. This selection shows the Time Configuration screen, where you can see the current time on the host. Make sure it’s not too different from the actual time, because a host that’s more than 1,000 seconds is considered “insane” and won’t synchronize. Continue reading
Hi. It’s pretty funny talking about Windows and routing :0, however I need to document how to change a route metric when my Internet is from wireless network but LAN cab;e interface has just been configured by DHCP. In Windows always a network cable connection takes higher priority therefore that interface is assigned with lower metric therefore is used as a default gateway. But this is not always what we need. Please follow this step by step guide to assign a wireless interface as the default ip gateway. Continue reading
Linux console port serial connection it is very handy way of managing Cisco switches and routers. This is especially useful when you are connecting using older laptop with COM port. Please follow step-by-spe guide to configure Cisco Serial Console Connection in Linux: Continue reading
Switch#dir Directory of flash:/ 509 -rwx 2301 Mar 1 1993 00:24:41 +00:00 config.text 510 -rwx 24 Mar 1 1993 00:24:41 +00:00 private-config.text 511 -rwx 2072 Mar 1 1993 00:24:41 +00:00 multiple-fs 512 -rwx 3584 Mar 1 1993 00:38:49 +00:00 tftp 2 drwx 512 Mar 1 1993 00:15:19 +00:00 c3750-ipbasek9-mz.122-55.SE7
The command below creates new archive saved.tar including all files and directories in c3750-ipbasek9-mz.122-55.SE7 directory and saves the TAR archive on tftp server.
Switch#archive tar /create tftp://192.168.173.1/saved.tar c3750-ipbasek9-mz.122-55.SE7