coding journal

1. 접속이 아예 안된다. (다른 프로그램도 VsCode Mongo & Mongo Compass)NACL 에 막힌 경우.이런 경우에는 Mongo Atlas 에 접속해거 ip 주소를 추가해주면 된다(0 .0. 0. 0/0 은 모든 ip 허용) 2. 다른 앱으론 접속이 되는데 npm 만 안된다!!!!!!!!필요한 npm 파일이 없는경우 !!!!!!필요한 npm 파일!1. cors (npm i cors)2. mongoose (npm i mongoose) 3. mongodb (npm i mongodb)4, express (npm i express) npm list -g --depth=0npm list --depth=0으로 어떤 npm 파일들이 설치 되어있는지 확인.

실제 CICD 에 궁금한게 많아서 시작한 AWS 드뎌 첫 Associate 자격증!

SSL / TLS https://kanoos-stu.tistory.com/46 SSL이란?, SSL과 TLS 정의 및 차이'AWS로 구현하는 MAS와 컨테이너 오캐스트레이션' 강의를블로그를 통해 구매하시는 분들에게만 10%할인 중입니다.이미지를 클릭하면 강의로 이동할 수 있습니다.아래 쿠폰번호를 입력해 주세요!16kanoos-stu.tistory.com Connection drainning (너무 잘적음)https://velog.io/@combi_jihoon/ELB-Connection-Draining ELB - Connection Draining인스턴스가 등록 취소 또는 비정상적인 상태일 때 인스턴스에 어느 정도의 시간을 주어 in-flight 요청을 완료할 수 있도록 만들어 주는 기능이다.ELB 타입마..

ELB , Elastic Load Balancer are servers that forward traffic to multiple servers (e,g EC2s) downstream. why use?- Spread load across intances- Expose a single point of access (DNS) to applicaiton- Seamlessly handle failer of intances  - Do reguler health check to instances- Enfore stickiness with cookies- High availability across zones- Seperate public traffic from private traffic AWS ELB is man..

Managed NFS (Network file System) that can be mounted on many EC2 - EFS works with instances in mulit -AZ - Highly available ,scalable- Expansive (3 * gp2 (EBS) ), pay per use Use cases- Content management- web serving- data sharing- Wordpress - Uses NFSv4.1 protocol- Uses security group to control access to EFS- Compatible with Linux based AMI (not Windows)- Encryption at rest using KMS- POSIX ..

EBS Volumes come in 6 type gp2 / gp3 (SSD) general purpose SSD volume which balances price and performaceio 1 / io2 Block Express (SSD)Highest-performace SSD volume for mission-critical low tanancy or high through workloadsst1 (HDD) Low cost HDD volume designed for frequently accessed, throughput- intensice workloads.sc1 (HDD)Lowest cost HDD volume designed for less frequently accessed workloads..

EBS volumes are network drives with good but "limited" performace SO if you need a high-performace hardware disk, use EC2 Instance Store.its a named of a hardware which is attacted to physical server. - Gives better I/O performance- great choice on a high performace - Good for buffer / Cache / Scratch data / temporary content // not good for long term storage However it loses storage when EC2 is..

AMI = Amazon Machine Image.AMI are a customization of an EC2 instance.- add your own software, configuration, operationg system, monitoring...- Faster boot/ config time because the software is pre-packaged.  AMI are built for specifit region (can copy across region)can launch EC2 from - public AMI : pawword provided.- Your own AMI : you make and maintain them yourself- An AWS Marketplace AMI : a..

Make a backup (snapshot) of your EBS volume at a point in time. Not necessary to detach volume to do snapshot, but its recommended Can copy snapshots across AZ or region  Features EBS Snapshot Archive- move a Snapshot to an " Archive  teir" that is 75% cheaper.- Takes within 24 to 72 hours for restoring the arching (So it is not immediate) Recycle Bin for Snapshots- setup rules to retain the del..

EBS (Elastic Block Store) Voltume is a network drive you cna attach to your instances while they run. EBS(Elastic Block Store) Volume은 AWS(Amazon Web Services)에서 제공하는 블록 스토리지 서비스입니다. EC2 인스턴스에 사용할 수 있는 저장 장치로, 가상 디스크와 유사하게 동작합니다. It allows Instance ti persist data, even after their terminationThey can only be mounted to one instance at a time (at the CCP level)( CCP - Certified Cloud Practitione..