CODEWITHSUNDEEP
dockeretcd
jhinds
jhinds

Reputation: 186

How could I get files from a docker container running the official etcd image if there is no shell?

I have a docker container that is running the etcd docker image by CoreOS which can be found here: https://quay.io/repository/coreos/etcd. What I want to do is copy all the files that are saved in etcd's data directory locally. I tried to connect to the container using docker exec -it etcd /bin/sh but it seems like there is no shell (/bin/bash, /bin/sh) on there or at least it can't be found on the $PATH variable. How can I either get onto the image or get all the data files inside of etcd copied locally?

Upvotes: 0

Views: 387

Answers (3)

int0x03
int0x03

Reputation: 11

the bin folder is empty. but the etcdctl is in the /usr/local/bin/ folder.

so you can try:

docker exec -it <container_id> /usr/local/bin/etcdctl
docker exec -it <container_id> /usr/local/bin/etcdctl put foo "hello"
docker exec -it <container_id> /usr/local/bin/etcdctl get foo

Upvotes: 1

Elton Stoneman
Elton Stoneman

Reputation: 19194

Docker has the cp command for copying files between container and host:

docker cp <id>:/container/source /host/destination

You specify the container ID or name in the source, and you can flip the command round to copy from your host into the container:

docker cp /host/source <id>:/container/destination

Upvotes: 0

Patrick Tescher
Patrick Tescher

Reputation: 3447

You can export the contents of an image easily:

docker export <CONTAINER ID> > /some_file.tar

Ideally you should use volumes so that all your data is stored outside the container. Then you can access those files like any other file.

Upvotes: 1

Related Questions