[GCP] 로컬에서 GCP VM 인스턴스 SSH 접속

1. SSH 키 생성 여부 확인
   

   $ cat ~/.ssh/id_rsa.pub
   cat: /Users/shingme/.ssh/id_rsa.pub: No such file or directory

   
   
   
2. SSH 키 생성
   

   $ cd /Users/shingme
   $ ssh-keygen -t rsa -C "shinmi@gmail.com"
   Generating public/private rsa key pair.
   Enter file in which to save the key (/Users/shingme/.ssh/id_rsa): /Users/shingme/.ssh/id_rsa_gcloudbysm
   Created directory '/Users/shingme/.ssh'.
   Enter passphrase (empty for no passphrase): 
   Enter same passphrase again: 
   (생략....)​

   
   
   
3. SSH 키 확인
   

   $ cd ~/.ssh
   $ ls
   id_rsa_gcloudbysm     id_rsa_gcloudbysm.pub​

   private key : id_rsa_gcloudbysm
   public key : id_rsa_gcloudbysm.pub
   
   
4. public key를 GCP 메타데이터 등록 (간략하게 기입)
   GCP console > Compute Engine > 설정 > 메타데이터 > SSH 
   수정 클릭 
   항목 추가
   public key 값 복붙하면 됨
   
   
5. GCP VM인스턴스 접속 
   

   $ ssh -i ~/.ssh/id_rsa_gcloudbysm shinmi@xx.xx.xx.xx
   The authenticity of host 'xx.xx.xx.xx' can't be established.
   ECDSA key fingerprint is SHA256:...
   Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
   Warning: Permanently added 'xx.xx.xx.xx' (ECDSA) to the list of known hosts.
   Enter passphrase for key '/Users/shingme/.ssh/id_rsa_gcloudbysm': 
   Welcome to Ubuntu 20.04.2 LTS (GNU/Linux 5.8.0-1038-gcp x86_64)
   
    * Documentation:  https://help.ubuntu.com
    * Management:     https://landscape.canonical.com
    * Support:        https://ubuntu.com/advantage
   
    * Super-optimized for small spaces - read how we shrank the memory
      footprint of MicroK8s to make it the smallest full K8s around.
   
      https://ubuntu.com/blog/microk8s-memory-optimisation
   (생략...)

   
   
   
6. 터미널 ssh config 등록
   ~/.ssh 에 config 파일 생성 후 아래와 같이 설정
   

   Host gcp-dev           # 호스트명
   HostName xx.xx.xx.xx   # 퍼블릭 IP주소
   User shinmi            # 사용자 이름
   IdentityFile ~/.ssh/id_rsa_gcloudbysm  # 프라이빗키 파일 경로

   
   
   
7. GCP VM 인스턴스 접속
   

   $ ssh gcp-dev​