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kubectl create deployment hello-app --image=gcr.io/google-samples/hello-app:2.0

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• Top 30 folders directories disk space sorted by size desc

du -h | sort -rh | head -30

• Find a particular file or dir in current dir recursively

find . -name "darwin_amd64" -type d -print0

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# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

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Export

mysqldump --column-statistics=0 -h hostname -u root -p dbname > backup.sql

Import

mysql -h hostname -u root -p dbname < backup.sql

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import boto3
import os
import json
filename = 'data.json'
kms_id = ''
secretdata= {"username":"chris","password":"BnQw!XDWgaEeT9XGTT29"}
secret_data={}
for k,v in secretdata.items():
    encrypt_string = os.popen(("aws kms encrypt --key-id %s --plaintext '%s' --query CiphertextBlob --output text" % (kms_id, v))).read()
    secret_data[k] = encrypt_string

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Put the following in github webhook section:

https://jenkins.example.com/v1/generic-webhook-trigger/invoke?token=my-token&apiKey=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

where :

apiKey=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx is for API Gateway api key token=my-token is same as configured in Jenkins job

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• Get the context :

CONTEXT=$(kubectl config current-context)

• Create the required service account and cluster role binding :

apiVersion: v1
kind: ServiceAccount
metadata:

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# cluster.yaml
# A cluster with managed nodegroup
# Setup aws profile if you have many:
#   `export AWS_PROFILE=test`
#   `export AWS_DEFAULT_PROFILE=test`
# Run the command:
#   `eksctl create cluster -f cluster.yaml --write-kubeconfig --set-kubeconfig-context`
---
apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

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<!DOCTYPE NETSCAPE-Bookmark-file-1>
<!-- This is an automatically generated file.
     It will be read and overwritten.
     DO NOT EDIT! -->
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
<TITLE>Bookmarks</TITLE>
<H1>Bookmarks</H1>
<DL><p>
    <DT><H3 ADD_DATE="1578057396" LAST_MODIFIED="0" PERSONAL_TOOLBAR_FOLDER="true">Bookmarks bar</H3>
    <DL><p>

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Questions are not from any actual exam!!!  


Q: Create a secret that has the following username password data:
username=missawesome
password=123kube321
Create a pod running nginx that has access to those data items in a volume mount path at /tmp/secret-volume
log into the nginx pod you created and list the items and cat the output of the data items to a file "credentials.txt"