如果在主机上绑定安装不存在的文件,则docker将在其位置愉快地创建一个目录并将其与容器共享。在“修复”错误后(例如,停止容器,用文件替换目录并启动容器),您将收到以下错误:
docker:来自守护程序的错误响应:oci运行时错误:container_linux.go:262:启动容器进程导致“ process_linux.go:339:容器初始化导致“ rootfs_linux.go:57:将” [snip]”安装到[snip] [“ snip]”处的“]”导致“不是目录”“”“ :您是否正在尝试将目录挂载到文件上(反之亦然)?检查指定的主机路径是否存在以及是否为预期的类型。
以下是从控制台复制的一些步骤:
# ensure test file does not exist
$ rm -f /test.txt
# run hello-world container with test.txt bind mount
$ docker run --name testctr -v /test.txt:/test.txt hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
<snip>
# let's say what's in /
$ ls -l /
<snip>
dr-xr-xr-x 13 root root 0 Jul 17 01:08 sys
drwxr-xr-x 2 root root 4096 Jul 22 20:54 test.txt
drwxrwxrwt 1 root root 4096 Jul 17 09:01 tmp
<snip>
# let's correct the mistake and run the container again
$ rm -rf /test.txt
$ touch /test.txt
$ docker start testctr
Error response from daemon: OCI runtime create failed: container_linux.go:348: starting
container process caused "process_linux.go:402: container init caused \"rootfs_linux.go:58:
mounting \\\"/test.txt\\\" to rootfs \\\"/var/lib/docker/overlay2/
26fd6981e919e5915c31098fc74551314c4f05ce6c5e175a8be6191e54b7f807/merged\\\" at \\\"/var/lib/
docker/overlay2/26fd6981e919e5915c31098fc74551314c4f05ce6c5e175a8be6191e54b7f807/merged/
test.txt\\\" caused \\\"not a directory\\\"\"": unknown: Are you trying to mount a directory
onto a file (or vice-versa)? Check if the specified host path exists and is the expected
type
Error: failed to start containers: testctr
请注意,即使我们在启动现有容器时遇到此错误,但创建一个新容器实际上仍然有效。
所以我的问题是,如何解决这个问题?我可以看到两种不同的可能性:
docker run ...
)创建为变量(?)的导出命令PS:这个问题也应该解决this one。
答案 0 :(得分:0)
为现有容器生成docker run ...
的两个选项:
assaflavie/runlike-之所以要这样做,是因为另一个似乎在标签方面存在一些问题(但是该标签不支持批量检查)
$ docker run --rm -v /var/run/docker.sock:/var/run/docker.sock assaflavie/runlike <container>
$ docker run --rm -v /var/run/docker.sock:/var/run/docker.sock nexdrew/rekcod <container>
最终脚本看起来像( unested ):
# get names of running containers (names persist recreation)
running_containers=$(docker ps --format "{{.Names}}")
# stop running containers
docker stop $running_containers
# generate recreate script
containers=$(docker ps --all --format "{{.Names}}")
echo '#!/bin/sh' > ./recreate.sh
while read -r cname; do
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock assaflavie/runlike "$cname" >> ./recreate.sh
done <<< "$containers"
chmod +x ./recreate.sh
# ... do some action now (maybe also manually check recreate script) ...
# recreate containers
docker rm --force $containers
./recreate.sh
# restart containers that were previously running
docker start $running_containers
这似乎可以满足我的需求,但是一些人指出,这些工具可能会缺少docker功能,甚至可能包含错误(例如,我已经注意到rekcod已经存在此错误),因此请谨慎使用。