12.5. Podman을 사용하여 컨테이너 및 Pod 수동 실행

프로세스

1. mariadb-conf/Containerfile 파일을 표시합니다.

   $ cat mariadb-conf/Containerfile
   FROM docker.io/library/mariadb
   COPY my.cnf /etc/mysql/my.cnf

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2. mariadb-conf/my.cnf 파일을 표시합니다.

   [client-server]
   # Port or socket location where to connect
   port = 3306
   socket = /run/mysqld/mysqld.sock
   
   # Import all .cnf files from the configuration directory
   [mariadbd]
   skip-host-cache
   skip-name-resolve
   bind-address = 127.0.0.1
   
   !includedir /etc/mysql/mariadb.conf.d/
   !includedir /etc/mysql/conf.d/

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3. mariadb-conf /Containerfile 을 사용하여 docker.io/ Cryostat/mariadb 이미지를 빌드합니다.

   $ cd mariadb-conf
   $ podman build -t mariadb-conf .
   $ cd ..
   STEP 1: FROM docker.io/library/mariadb
   Trying to pull docker.io/library/mariadb:latest...
   Getting image source signatures
   Copying blob 7b1a6ab2e44d done
   ...
   Storing signatures
   STEP 2: COPY my.cnf /etc/mysql/my.cnf
   STEP 3: COMMIT mariadb-conf
   --> ffae584aa6e
   Successfully tagged localhost/mariadb-conf:latest
   ffae584aa6e733ee1cdf89c053337502e1089d1620ff05680b6818a96eec3c17

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4. 선택 사항: 모든 이미지를 나열합니다.

   $ podman images
   LIST IMAGES
   REPOSITORY                                                       TAG         IMAGE ID      CREATED             SIZE
   localhost/mariadb-conf                                           latest      b66fa0fa0ef2  57 seconds ago      416 MB

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5. Cryostatpod라는 포드 를 생성하고 컨테이너와 호스트 시스템 간의 포트 매핑을 구성합니다.

   $ podman pod create --name wordpresspod -p 8080:80

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6. Cryostat pod Pod 내에 mydb 컨테이너를 생성합니다.

   $ podman run --detach --pod wordpresspod \
       -e MYSQL_ROOT_PASSWORD=1234 \
       -e MYSQL_DATABASE=mywpdb \
       -e MYSQL_USER=mywpuser \
       -e MYSQL_PASSWORD=1234 \
       --name mydb localhost/mariadb-conf

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7. Cryostat pod Pod 내에 myweb 컨테이너를 생성합니다.

   $ podman run --detach --pod wordpresspod \
       -e WORDPRESS_DB_HOST=127.0.0.1 \
       -e WORDPRESS_DB_NAME=mywpdb \
       -e WORDPRESS_DB_USER=mywpuser \
       -e WORDPRESS_DB_PASSWORD=1234 \
       --name myweb docker.io/wordpress

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8. 선택 사항: 연결된 모든 Pod 및 컨테이너를 나열합니다.

   $ podman ps --pod -a
   CONTAINER ID  IMAGE                               COMMAND               CREATED                 STATUS                     PORTS                 NAMES               POD ID        PODNAME
   9ea56f771915  k8s.gcr.io/pause:3.5                                      Less than a second ago  Up Less than a second ago  0.0.0.0:8080->80/tcp  4b7f054a6f01-infra  4b7f054a6f01  wordpresspod
   60e8dbbabac5  localhost/mariadb-conf:latest       mariadbd              Less than a second ago  Up Less than a second ago  0.0.0.0:8080->80/tcp  mydb                4b7f054a6f01  wordpresspod
   045d3d506e50  docker.io/library/wordpress:latest  apache2-foregroun...  Less than a second ago  Up Less than a second ago  0.0.0.0:8080->80/tcp  myweb               4b7f054a6f01  wordpresspod

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