Docker 项目部署注意事项

Docker 项目部署注意事项

Dockerfile

  • 容器时区错误

    RUN echo "Asia/Shanghai" > /etc/timezone

  • 设置 JVM 启动参数

    ENTRYPOINT ["java", "-Xmx512M", "-XX:+HeapDumpOnOutOfMemoryError", "-XX:HeapDumpPath=/log/manager/", "-XX:+PrintGCDetails", "-XX:+PrintGCDateStamps", "-XX:+PrintHeapAtGC", "-Xloggc:/log/manager/gc.log", "-cp", "app:app/lib/*", "com.eastrobot.kbs.KbasePsrtApplication"]

  • ENTRYPOINT [] 里的参数要用双引号逗号隔开，不可写在一起

  • 执行命令时，不会自动创建文件夹，故没有的文件要提前创建（创建方式如下）

  • 以上命令等价于

    script
    java -Xmx512M -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/log/manager/ -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintHeapAtGC -Xloggc:/log/manager/gc.log -cp app:app/lib/* com.eastrobot.kbs.KbasePsrtApplication

  • 给容器创建文件夹

    RUN mkdir --parents /log/manager/

Docker 项目启动相关

  • 日志有报错

    • When netty_transport_native_epoll_x86_64 cannot be found, stacktrace is logged
    • 忽略即可，具体可参照netty/issues/7319

  • 常用命令（示例，后续会用到docker-compose或者k8s）

    • docker run -d -p 8088:8088 --name manager kbs/manager
    • docker logs manager -f --tail 200
    • docker exec -it manager sh
    • docker inspect manager
    • docker stop manager & docker rm manager