https://www.testpreptraining.com/
https://www.whizlabs.com/cart/
Wednesday, December 29, 2021
Tuesday, December 21, 2021
AWS : Step Functions : ADSL
https://www.youtube.com/watch?v=zCIpWFYDJ8s&list=PL9nWRykSBSFgQrO66TmO1vHFP6yuPF5G-
https://www.youtube.com/watch?v=s0XFX3WHg0w
Step Function :
Serverless Orchestration Service
ADSL
Monday, December 20, 2021
Node + Typescript : Typescript + Node
https://stackoverflow.com/questions/36999461/how-to-install-only-devdependencies-using-npm
npm init -y
npm i -D typescript
npx tsc example.ts
node example.js
https://www.youtube.com/watch?v=1UcLoOD1lRM
Terraform : terraform commands
- terraform init
- terraform plan
- terraform apply
- terraform destroy
https://www.youtube.com/watch?v=JHiSGnh5Two&list=PLwbWIFE49l8kxe3PLftHFrwIYSfhNxaVZ&index=2
- .terraform
- .terraform.lock.hcl
- terraform.tfstate
- terraform.tfstate.backup
Terraform : TF2
https://registry.terraform.io/providers/hashicorp/aws/latest/docs
https://www.youtube.com/watch?v=JHiSGnh5Two&list=PLwbWIFE49l8kxe3PLftHFrwIYSfhNxaVZ&index=2
https://www.youtube.com/watch?v=SLB_c_ayRMo
https://www.youtube.com/watch?v=JHiSGnh5Two&list=PLwbWIFE49l8kxe3PLftHFrwIYSfhNxaVZ&index=3
https://www.youtube.com/watch?v=esGezkpzpRo&list=PLwbWIFE49l8kxe3PLftHFrwIYSfhNxaVZ&index=4
resource "aws_instance" "tcw" {
ami = "ami-0ed9277fb7eb570c9"
instance_type = "t2.micro"
tags = {
Author = "KK"
ProjectManager = "PM"
Name = "TCW EC2Instance"
}
}
resource "aws_ec2_tag" "tcw_nameTag" {
resource_id = aws_instance.tcw.id
key = "Name"
value = "TCW EC2Instance"
}
#Configure the AWS Provider
provider "aws" {
region = "us-east-1"
}
Monday, December 13, 2021
Kubectl: Load Balancer : Internal LB : Does not change , even if you restart POD
em-ui LoadBalancer 172.20.221.225 internal-a54ec7ad6f02c49899f5bbd68ce6da3f-74411592.us-east-1.elb.amazonaws.com
em-ui LoadBalancer 172.20.221.225 internal-a54ec7ad6f02c49899f5bbd68ce6da3f-74411592.us-east-1.elb.amazonaws.com
Kubectl : NodePort : TargetPort : Port
TargetPort is port at which Docker Container Listens
NodePort is port at which NodePort - public ip of node listens
Port is port at which PODS listens
Kubectl : Debugging : How to : Debug Kubernetes : Debugging Kubernetes : kubernetes debugging : Kubernetes debug
https://linuxhint.com/sort-kubectl-events-by-time/
kubectl get events --sort-by='.lastTimestamp' -n amex-poc
============================================================
kubectl describe pod foobar-1h6yyy -n namespace
kubectl describe svc foobarservice -n namespace
kubectl describe deployment foobardeploy -n namespace
============================================================
kubectl logs mongodb-2 -n amex-poc mongodb --tail=200
kubectl logs mongodb-2 -n amex-poc mongodb --follow
============================================================
kubectl get pods -n namespace1 -w -l app=io.dev.service
-w is watch
-l "key=value" Labels
============================================================
kubectl create -f rabbitmq-deployment.yml -f rabbitmq-service.yml
kubectl delete -f rabbitmq-service.yml -f rabbitmq-deployment.yml
============================================================
kubectl delete deployment foodeploy -n namespace1
kubectl delete deployments foodeploy -n namespace1
kubectl delete service foobarservice -n namespace1
kubectl delete svc foobarservice -n namespace1
deployments ==== deployment
svc ====service ==== services
============================================================
AWS : Secrets : Code Snippet : Nodejs
// Use this code snippet in your app.
// If you need more information about configurations or implementing the sample code, visit the AWS docs:
https://aws.amazon.com/developers/getting-started/nodejs/
// Load the AWS SDK
var AWS = require('aws-sdk'),
region = "us-east-1",
secretName = "qa/cca-product/mongodb",
secret,
decodedBinarySecret;
// Create a Secrets Manager client
var client = new AWS.SecretsManager({
region: region
});
// In this sample we only handle the specific exceptions for the 'GetSecretValue' API.
// See https://docs.aws.amazon.com/secretsmanager/latest/apireference/API_GetSecretValue.html
// We rethrow the exception by default.
client.getSecretValue({SecretId: secretName}, function(err, data) {
if (err) {
if (err.code === 'DecryptionFailureException')
// Secrets Manager can't decrypt the protected secret text using the provided KMS key.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
else if (err.code === 'InternalServiceErrorException')
// An error occurred on the server side.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
else if (err.code === 'InvalidParameterException')
// You provided an invalid value for a parameter.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
else if (err.code === 'InvalidRequestException')
// You provided a parameter value that is not valid for the current state of the resource.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
else if (err.code === 'ResourceNotFoundException')
// We can't find the resource that you asked for.
// Deal with the exception here, and/or rethrow at your discretion.
throw err;
}
else {
// Decrypts secret using the associated KMS CMK.
// Depending on whether the secret is a string or binary, one of these fields will be populated.
if ('SecretString' in data) {
secret = data.SecretString;
} else {
let buff = new Buffer(data.SecretBinary, 'base64');
decodedBinarySecret = buff.toString('ascii');
}
}
// Your code goes here.
});
Kubectl : Copy from POD or Copy to POD
[Copy something to Pod]
kubectl cp /DBScript/Extraction.tar mongodb-0:/tmp -n namespace1
[Copy something from Pod]
kubectl cp mongodb-0:/tmp/ . -n namespace1
Linux : VIM : Delete Lines below particular line : Goto Top : Goto Bottom : VIM : VI editor
Sunday, December 12, 2021
Thursday, December 9, 2021
Kubectl Logs : Tail : Follow
kubectl logs vea-cc -n amex-poc --tail=20 nginx
kubectl logs vea-cc -n amex-poc --follow
Wednesday, December 8, 2021
kubectl : Edit Deployment and Delete Deployment
kubectl get deployments-n amex-poc
kubectl edit deployment eaas
=================
kubectl delete deployment eaas
Mongo : Kubectl replace Selector and Label - Service : Install ps : Vim Jump to 1st Line : Vim Search : JVM Info in Linux
mongorestore -d IDS_Extraction_Application_Form -c DataPrepConfig collections/DataPrepConfig.bson
mongorestore -d IDS_Extraction_Application_Form -c ExperimentConfig collections/ExperimentConfig.bson
mongorestore -d IDS_Extraction_Application_Form -c ExperimentModel collections/ExperimentModel.bson
mongorestore -d IDS_Extraction_Application_Form -c Project collections/Project.bson
mongorestore -d IDS_Extraction_Application_Form -c Tag collections/Tag.bson
mongorestore -d IDS_Extraction_Application_Form -c TagGroup collections/TagGroup.bson
mongorestore -d IDS_Extraction_Application_Form -c TemplateStructureConfig collections/TemplateStructureConfig.bson
mongorestore -d IDS_Extraction_Application_Form -c hibernate_sequences collections/hibernate_sequences.bson
- apiVersion: v1
kind: Service
metadata:
labels:
io.qa.service: ids-page-classification-runtime
name: ids-page-classification-runtime
namespace: amex-poc
spec:
ports:
- port: 8096
targetPort: 8096
protocol: TCP
selector:
io.qa.service: ids-page-classification-runtime
type: ClusterIP
kubectl cp mongodb-2:/tmp/10Aug2021/ . -n fda
kubectl cp collections mongodb-0:/tmp/
kubectl cp pdf vea-cc-5c6d5fd4dd-nrp9w:/tmp
kubectl cp vea-cc-6b8469fd57-m99g7:/tmp/Dump . -n cs
npm install
npm run build_dev
https://stackoverflow.com/questions/26982274/ps-command-doesnt-work-in-docker-container
apt-get update && apt-get install -y procps
stackoverflow.com/questions/5317152/getting-the-parameters-of-a-running-jvm/17400304#17400304
jinfo -flags <vmid>
jinfo -sysprops <vmid>
ENTRYPOINT java -Xms4884M -Xmx6144M -XX:+HeapDumpOnOutOfMemoryError -jar -Dserver.port=8081 target/vea-command-center.jar --spring.config.location=/usr/bin/vea/vea-command-center/src/main/resources/application.yml
ENTRYPOINT java -jar -Dserver.port=8081 target/vea-command-center.jar --spring.config.location=/usr/bin/vea/vea-command-center/src/main/resources/application.yml
https://akobor.me/posts/heap-size-and-resource-limits-in-kubernetes-for-jvm-applications
2021-12-08 05:54:12 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-1.mongodb:27017] INFO - Server mongodb-1.mongodb:27017 does not appear to be a member of an initiated replica set.
2021-12-08 05:54:12 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-2.mongodb:27017] INFO - Server mongodb-2.mongodb:27017 does not appear to be a member of an initiated replica set.
2021-12-08 05:54:20 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Server mongodb-0.mongodb:27017 does not appear to be a member of an initiated replica set.
2021-12-08 05:54:22 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-1.mongodb:27017] INFO - Server mongodb-1.mongodb:27017 does not appear to be a member of an initiated replica set.
2021-12-08 05:54:22 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-2.mongodb:27017] INFO - Server mongodb-2.mongodb:27017 does not appear to be a member of an initiated replica set.
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Monitor thread successfully connected to server with description ServerDescription{address=mongodb-0.mongodb:27017, type=REPLICA_SET_PRIMARY, state=CONNECTED, ok=true, version=ServerVersion{versionList=[4, 0, 27]}, minWireVersion=0, maxWireVersion=7, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=699137, setName='rs0', canonicalAddress=mongodb-0:27017, hosts=[mongodb-0:27017], passives=[], arbiters=[], primary='mongodb-0:27017', tagSet=TagSet{[]}, electionId=7fffffff0000000000000001, setVersion=1, lastWriteDate=Wed Dec 08 05:54:27 UTC 2021, lastUpdateTimeNanos=9982679452786567}
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Adding discovered server mongodb-0:27017 to client view of cluster
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Server mongodb-0.mongodb:27017 is no longer a member of the replica set. Removing from client view of cluster.
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Closed connection [connectionId{localValue:4, serverValue:206862320}] to mongodb-0.mongodb:27017 because there was a socket exception raised on another connection from this pool.
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Server mongodb-1.mongodb:27017 is no longer a member of the replica set. Removing from client view of cluster.
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Server mongodb-2.mongodb:27017 is no longer a member of the replica set. Removing from client view of cluster.
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0.mongodb:27017] INFO - Canonical address mongodb-0:27017 does not match server address. Removing mongodb-0.mongodb:27017 from client view of cluster
2021-12-08 05:54:30 [cluster-ClusterId{value='61aee955e1ffbc66232fb4f3', description='null'}-mongodb-0:27017] INFO - Exception in monitor thread while connecting to server mongodb-0:27017
https://stackoverflow.com/questions/50259015/connection-refused-to-kubernetes-service
Connection Refused to Kubernetes Service
You should map the service to the right ports.
https://linuxize.com/post/vim-search/
Press /.
Type the search pattern.
Press Enter to perform the search.
Press n to find the next occurrence or N to find the previous occurrence.
https://cyberciti.biz/faq/howto-unix-linux-vi-vim-jump-to-end-of-file/
1G
Tuesday, December 7, 2021
Kubenetes : Labels -l
kubectl get pods -l app=rabbitmq -n cs
kubectl get pod -w -l app=rabbitmq -n cs
kubectl delete pod -l app=rabbitmq -n cs
Sunday, December 5, 2021
ConfigMap - Kubernetes YAML Manifest
https://www.youtube.com/watch?v=6T5mI2VwUNc
apiVersion : v1 kind : configMap metadata : name : wordpress-credentials data: username : "blaize" db-password : "password" --- spec: containers: - image: wordpress:4.8-apache name: env: - name: WORDPRESS_DB_PASSWORD valueFrom: configMapKeyRef: name: wordpress-credentials key: db-password
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