Linux command 모음

1. 23-01-01 ~ 23-01-13 사이에 생성된 *.log 파일 tar 압축하기

   sudo find ./ -name "*.log" -type f \
   -newerat 2023-01-01 ! -newerat 2023-02-01 \
   -exec tar rf 202301.tar {} \;```
   

2. systemd에 등록된 consul 데몬 로그 확인

   sudo journalctl -u consul.service -r
   

3. install AWS CodeDeploy agent
   CodeDeploy endpoint 사용 시 enable_auth_policy설정이 필요하므로 Codedeploy agent 설치 후 config 수정 -> agent restart가 필요합니다

   sudo apt update && sudo apt install -y ruby-full wget
   
   cd ~/work
   wget https://aws-codedeploy-ap-northeast-2.s3.ap-northeast-2.amazonaws.com/latest/install
   chmod +x ./install 
   sudo ./install auto
   
   rm -rf ~/work/install
   sudo systemctl stop codedeploy-agent
   
   sudo sh -c "cat<<EOF > /etc/codedeploy-agent/conf/codedeployagent.yml
   ---
   :log_aws_wire: false
   :log_dir: '/var/log/aws/codedeploy-agent/'
   :pid_dir: '/opt/codedeploy-agent/state/.pid/'
   :program_name: codedeploy-agent
   :root_dir: '/opt/codedeploy-agent/deployment-root'
   :verbose: false
   :wait_between_runs: 1
   :proxy_uri:
   :max_revisions: 2
   :enable_auth_policy: true
   EOF"
   
   sudo systemctl restart codedeploy-agent.service
   

4. git branch 분기 확인

   git log --all --decorate --oneline --graph
   

5. Logstash 처리량 확인

   curl localhost:9600/_node/stats/pipelines | jq '.pipelines[].events'
   

6. 한글 Windows에서 압축한 파일 Mac OS에서 압축풀기(Illegal byte sequence 에러 발생 시)

   mkdir ./unzip_files
   for f in *.zip; do ditto -Vxk --sequesterRsrc --rsrc $f ./unzip_files; done
   

7. 모든 Python library upgrade 하기

   pip list --outdated | awk '{ print $1 }' | xarge -I{} pip3 install --upgrade {}
   

8. exit 0으로 종료될 때 까지 max_attempts만큼 command 실행하기

   #!/bin/bash
   
   # maximum number of attempts
   max_attempts=5
   
   # counter for the attempts
   count=0
   
   while [ $count -le $max_attempts ]
   do
   
   <command here>
   
   # Check if command was successful (exit status 0)
   if [ $? -eq 0 ]
   then
       echo "Command executed successfully"
       exit 0
   else
       echo "Attempt $count Failed. Trying again in 5 seconds..."
       count=$((count+1))
       sleep 5
   fi
   done
   
   echo "Command failed after $max_attempts attempts."
   exit 1
   

9. EFS연결을 위한 NFS utils 패키지 빌드 및 오프라인 설치

   @Bastion

   sudo yum -y install git make rpm-build
   mkdir ~/efs-utils-pkg; cd ~/efs-utils-pkg
   sudo dnf download --resolve nfs-utils
   git clone https://github.com/aws/efs-utils; cd efs-utils
   sudo make rpm
   sudo cp -av /home/ec2-user/efs-utils-pkg/efs-utils/build/amazon-efs-utils-*.rpm ~/efs-utils-pkg; cd ~/efs-utils-pkg
   tar -cvf ~/efs-utils-pkg.tar *.rpm
   scp -i ~/test.pem ~/efs-utils-pkg.tar ec2-user@10.0.1.97:/home/ec2-user/
   

   @Install Target Server(No Internet Server)

   tar -xvf efs-utils-pkg.tar
   sudo rpm -ivh --nodeps ./*rpm
   sudo mkdir /efs
   sudo mount -t nfs -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport    172.31.13.181:/ /efs
   

   10. 모든 명령 실행 결과 마지막에 개행 추가하기

   export PS1="\n[\u@\h \W] $ "