This is a small article about understanding the liveness, readiness and startup in kubernetes. There's good explanation in the kubernetes documentation: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/ This video also explains well the process: https://www.youtube.com/watch?v=aTlQBofihJQ But I wanted to understand it in a practical way. So I have this demo: https://github.com/DiegoTc/guest-book-js-docker/tree/Running-App-Version-1 It's a simple application running on a kubernetes cluster. https://github.com/DiegoTc/guest-book-js-docker/blob/Running-App-Version-1/argo/deployment.yaml apiVersion: apps/v1 kind: Deployment metadata: name: chat-ui spec: replicas: 1 revisionHistoryLimit: 3 selector: matchLabels: app: chat-ui template: metadata: labels: app: chat-ui spec: containers: - image: diegotc/guestbook:20230803-064434 imagePullPolicy: Alwa...
Sometimes, we want to know how many devices are connected to our network. With any Unix OS you get easily know this. For this small tutorial we´re going to use Lubuntu 16.04.
We will use nmap. Nmap (Network Mapper) is a security scanner. It is used to discover hosts and services on a computer network.
For installing it, we first do
If we just need to identify the host names
If we need to know the OS of the devices we have connected we do a:
The result of this command will be something like this:
If you will like to read more about nmap, you can do a
Thanks to this blog articles for helping me doing this small tutorial:
http://bencane.com/2013/02/25/10-nmap-commands-every-sysadmin-should-know/
https://itsfoss.com/how-to-find-what-devices-are-connected-to-network-in-ubuntu/
We will use nmap. Nmap (Network Mapper) is a security scanner. It is used to discover hosts and services on a computer network.
For installing it, we first do
sudo apt-get install nmap
If we just need to identify the host names
sudo nmap -sL 192.168.0.1/24The result of this command will be
Starting Nmap 7.01 ( https://nmap.org ) at 2016-10-02 12:39 CST
Nmap scan report for 192.168.0.0
Nmap scan report for 192.168.0.1
Nmap scan report for 192.168.0.2
Nmap scan report for 192.168.0.3
Nmap scan report for 192.168.0.4
Nmap scan report for 192.168.0.5
If we need to know the OS of the devices we have connected we do a:
sudo nmap -O 192.168.0.1/24
The address 192.188.0.1 depends of your network, you should do a ifconfig for knowing yours.
The result of this command will be something like this:
Nmap scan report for 192.168.0.8
Host is up (0.0026s latency).
Not shown: 995 closed ports
PORT STATE SERVICE
22/tcp open ssh
80/tcp open http
3000/tcp open ppp
3389/tcp open ms-wbt-server
8080/tcp open http-proxy
MAC Address: 6C:EC:EB:A5:38:5D (Texas Instruments)
Device type: general purpose
Running: Linux 2.6.X|3.X
OS CPE: cpe:/o:linux:linux_kernel:2.6 cpe:/o:linux:linux_kernel:3
OS details: Linux 2.6.32 - 3.10
Network Distance: 1 hop
If you will like to read more about nmap, you can do a
man nmap
Thanks to this blog articles for helping me doing this small tutorial:
http://bencane.com/2013/02/25/10-nmap-commands-every-sysadmin-should-know/
https://itsfoss.com/how-to-find-what-devices-are-connected-to-network-in-ubuntu/
Thanks for the article
ResponderEliminarhttp://www.fashionbagsusa.com/