Friday, October 13, 2023
Saturday, August 5, 2023
Certificate Authority ?
Problem : How can we trust a website claiming to be who they are ?
Me browser https://www.youtube.com
-------------------------->
give me youtube
<-------------------------
youtube certificate contain
youtube public key signed by Google CA
-------------------------->
Google CA is trusted , therefore the youtube
public key is trusted.
here are the new secret key encrypted with youtube public key
Due to it was encrypted with youtube public key,
therefore youtube will be able to decrypt it with
youtube private key and able to read the new secret key.
<------------------------------->
All future communication between my browser and youtube
will be encrypted with the new secret key.
Therefore the commuinication is secure and each party is trust as who they claim.
Wednesday, June 7, 2023
kubectl to create a pod work flow
root@eng-app-node:~# more spider.yaml
apiVersion: v1
kind: Pod
metadata:
name: spider
namespace: eng
labels:
app: spider
tier: frontend
environment: training
spec:
containers:
- name: tomcat
image: kulbhushanmayer/tomcat:10.1.5
ports:
- containerPort: 8080
name: tomcat
- name: vote
image: kulbhushanmayer/vote:1.1
ports:
- containerPort: 80
name: vote
root@eng-app-node:~# more service.yaml
apiVersion: v1
kind: Service
metadata:
name: spider-svc
namespace: eng
labels:
app: spider
spec:
type: ClusterIP
ports:
- port: 80
targetPort: tomcat
protocol: TCP
name: tomcat
- port: 81
targetPort: vote
protocol: TCP
name: vote
selector:
app: spider
tier: frontend
environment: training
root@eng-app-node:~#
Wednesday, May 31, 2023
Monday, May 29, 2023
Python lambda map and filter
>>> names = ['Cat' , 'Dog' , 'Mouse' , 'Orangutan']
>>> list(map(lambda x:x[::-1],names))
['taC', 'goD', 'esuoM', 'natugnarO']
>>>
>>> numbs = [ 1,2,3,4,5,6,7,8]
>>> list(filter(lambda x : x%2 == 0, numbs))
[2, 4, 6, 8]
>>>
Wednesday, May 24, 2023
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