docker容器无法在主机上写入 [英] docker container not able to write on host machine
问题描述
如果运行以下代码,则可以将csv文件转换为所需的格式。
If I run the following code, I can convert the csv file into a format that I require.
import csv
import json
csvfile = open('/tmp/head.csv', 'r')
jsonfile = open('/tmp/file.json', 'w')
fieldnames = ("user","messageid","destination","col1", "col2", "code1","code2", "mydate", "status")
reader = csv.DictReader( csvfile, fieldnames)
for row in reader:
jsonfile.write(json.dumps(row))
当我在命令提示符下运行代码时,它就起作用了。
When I run the code at command prompt, it works.
python covert.py
但是如果我创建docker容器,ubuntu拒绝写入磁盘。
But if I create docker container, ubuntu refused to write to the disk.
alias python34='docker run -i -v "$(pwd)":/tmp/ --rm shantanuo/pyrun:3.4 python "$@"'
python34 /tmp/convert.py
我遇到了分段错误错误。我尝试使用
I got segmentation fault error. I tried disabling ubuntu firewall using
sudo ufw disable
我尝试移除装备。但是我仍然无法通过python容器写入主机的/ tmp /文件夹。
I tried removing apparmour. But I am still not able to write to /tmp/ folder of host machine through python container.
这是Ubuntu特有的问题。我可以在Amazon Linux ec2实例上使用相同的别名。
This is ubuntu specific issue. I am able to use the same alias on Amazon Linux ec2 instance.
推荐答案
这是因为我以前使用的容器(pyrun)使用未针对处理大文件进行优化。当我使用默认的python映像时,它起作用了。
This was because the container (pyrun) that I was using was not optimized to handle large files. When I used the default python image, it worked.
docker run -it --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp python:3 python convert.py
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