Docker容器不健康但日志中没有错误

Question

我正在使用官方的docker-compose 文件 of airflow将其拆分。

我的一些容器似乎不健康：

34d8698d67e7   apache/airflow:2.0.2   "/usr/bin/dumb-init …"   31 minutes ago   Up 28 minutes (unhealthy)   0.0.0.0:5555->5555/tcp, :::5555->5555/tcp, 8080/tcp   airflow_flower_1
a291cf238b9f   apache/airflow:2.0.2   "/usr/bin/dumb-init …"   31 minutes ago   Up 29 minutes               8080/tcp                                              airflow_airflow-init_1
fdb20e9152f3   apache/airflow:2.0.2   "/usr/bin/dumb-init …"   31 minutes ago   Up 29 minutes (unhealthy)   0.0.0.0:8080->8080/tcp, :::8080->8080/tcp             airflow_airflow-webserver_1
abf5a16aa846   apache/airflow:2.0.2   "/usr/bin/dumb-init …"   31 minutes ago   Up 29 minutes               8080/tcp                                              airflow_airflow-worker_1
f6dc352f407b   apache/airflow:2.0.2   "/usr/bin/dumb-init …"   31 minutes ago   Up 28 minutes               8080/tcp                                              airflow_airflow-scheduler_1
12dfc71e518f   redis:latest           "docker-entrypoint.s…"   31 minutes ago   Up 29 minutes (healthy)     0.0.0.0:6379->6379/tcp, :::6379->6379/tcp             airflow_redis_1

然而，例如，其中一个的日志似乎并不能提供很好的信息。

# docker logs -f fdb20e9152f3
WARNING! You should run the image with GID (Group ID) set to 0
         even if you use 'airflow' user (UID=50000)
 You started the image with UID=50000 and GID=50000
 This is to make sure you can run the image with an arbitrary UID in the future.
 See more about it in the Airflow's docker image documentation
     http://airflow.apache.org/docs/docker-stack/entrypoint
BACKEND=postgresql+psycopg2
DB_HOST=my-db-endpoint
DB_PORT=5432
WARNING! You should run the image with GID (Group ID) set to 0
         even if you use 'airflow' user (UID=50000)
 You started the image with UID=50000 and GID=50000
 This is to make sure you can run the image with an arbitrary UID in the future.
 See more about it in the Airflow's docker image documentation
     http://airflow.apache.org/docs/docker-stack/entrypoint
BACKEND=postgresql+psycopg2
DB_HOST=my-db-endpoint
DB_PORT=5432

不管有什么特定于airflow的问题，我如何才能从docker的角度检查到底发生了什么？

码头工人似乎意识到有几个集装箱不健康。

编辑：两个失败的容器都有healtcheck条件

healthcheck:
      test: ["CMD", "curl", "--fail", "http://localhost:5555/"]

和

healthcheck:
      test: ["CMD", "curl", "--fail", "http://localhost:8080/"]

通过查看他们的inspect输出，这似乎失败了。

 Failed to connect to localhost port 8080: Connection refused

但我无法确定是什么导致了失败。

编辑：我也尝试按照说明首先启动init服务

# docker-compose up airflow-init
Starting airflow_redis_1 ... done
Starting airflow_airflow-init_1 ... done
Attaching to airflow_airflow-init_1
airflow-init_1       | BACKEND=postgresql+psycopg2
airflow-init_1       | DB_HOST=my-db-endpoint
airflow-init_1       | DB_PORT=5432

但它永远不会离开，它会打印上面的信息，仅此而已.

Answer 1

我遇到了类似的问题，是码头的数量导致了这个问题。当我在mac上运行大量容器时，磁盘空间不足。我设法解决了这个问题，我修剪了码头卷。

码头容积修剪

这将删除mac簿上的任何未使用的卷。在运行此命令之前，请检查是否有任何有用的数据。

Answer 2

对于坞-组合，从入口点，组id的默认值是0。

"${AIRFLOW_UID:-50000}:${AIRFLOW_GID:-0}"

在您的气流项目存储库中编辑您的docker-compose.yaml文件或ad ass env.sh文件。

Answer 3

这似乎是一个错误，因为为运行此映像分配给docker的内存较少，请尝试增加用于docker的可用资源，并查看魔术。