kubernetes - Airflow KubernetesPodOperator AirflowException ('Pod Launching failed: {error}' .format(error = ex))

Question

我正在运行带有通过microk8s导入的自定义docker镜像的KubernetesPodOperator。在气流中运行DAG时，我会看到以下日志，直到收到超时消息AirflowException('Pod Launching failed: {error}'.format(error=ex))[2020-04-14 23:06:39,875] {logging_mixin.py:95} INFO - [[34m2020-04-14 23:06:39,875[0m] {[34mpod_launcher.py:[0m141} INFO[0m - Event: [1mk8s-pod-ml-3a541375[0m had an event of type [1mPending[0m[0m
搜索问题，我在ubuntus终端上运行microk8s kubectl get pods并得到:


如您所见，在日志中，pod的名称几乎完全相同(开头处为1m除外)，但状态为ErrImageNeverPull。除了this上面写着“KubernetesPodOperator的默认超时为120秒，这可能导致在下载较大的图像之前发生超时”，我在该状态中找不到与该状态或错误有关的任何内容。我将默认超时更改为600秒，但是没有用。

Answer 1

问题

Microk8s无法访问docker。我通过运行microk8s.inspect并找到

WARNING:  Docker is installed. 
File "/etc/docker/daemon.json" does not exist. 
You should create it and add the following lines: 
{
    "insecure-registries" : ["localhost:32000"] 
}

and then restart docker with: sudo systemctl restart docker
Building the report tarball
  Report tarball is at /var/snap/microk8s/1320/inspection-report-20200415_141500.tar.gz

在发出警告之后，所述气流设法将图像部署在 pods 中。