How to save all Docker images and copy to another machine
DockerDocker Problem Overview
I have the below list of images present on my system and want to copy all these images to a remote machine.
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
u14_py269 latest 6a1ec0b508b3 4 days ago 885.9 MB
u12_py273 latest c2a804894851 4 days ago 686 MB
u12_core latest 0d61eba80df2 4 days ago 629.1 MB
c6_py266 latest cb1a94742d59 4 days ago 1.32 GB
c6_core latest 77c2ed19d87f 4 days ago 1.278 GB
c7_py275 latest bb1d3de68452 4 days ago 1.117 GB
c7_core latest ca14a76e9cca 4 days ago 1.081 GB
u14_py35 latest d110c7e4a1f5 5 days ago 914.5 MB
u14_py34 latest 085a37cb8614 5 days ago 830.7 MB
u14_py276 latest 8927c6167930 5 days ago 834.1 MB
u14_core latest 93ead5abc25b 5 days ago 776.9 MB
centos centos6 36877b5acebb 5 days ago 228.9 MB
ubuntu latest 36248ae4a9ac 5 days ago 188 MB
ubuntu 12.04 94a7cb19a65b 5 days ago 137.8 MB
edgester/gerrit latest ce4e3238052a 6 days ago 735.2 MB
u14_as374_py276 latest fa5fb7189d70 11 days ago 1.497 GB
c721_as373_py275 latest 03ccf6961d0c 11 days ago 844.3 MB
c721_as373_py35 latest b5fece3dd45b 11 days ago 1.127 GB
c171_con_core latest 8af0d24a38a0 2 weeks ago 377.2 MB
u14_as374_php55 latest 29df638e363a 3 weeks ago 1.073 GB
j_u14_as374_php55 latest 29df638e363a 3 weeks ago 1.073 GB
centos centos7 c8a648134623 8 weeks ago 196.6 MB
centos latest c8a648134623 8 weeks ago 196.6 MB
j_u14_as374_py276 latest 28f379d60882 10 weeks ago 871.5 MB
ubuntu 14.04 89d5d8e8bafb 10 weeks ago 187.9 MB
Currently I am using method suggested in save and load Docker images, but I believe there must be a better way to deal with all images.
Docker Solutions
Solution 1 - Docker
If you want to export all images at once, create one big tar file:
docker save $(docker images -q) -o /path/to/save/mydockersimages.tar
If you want to save multiples images in one .tar file:
IDS=$(docker images | awk '{if ($1 ~ /^(debian|centos)/) print $3}')
docker save $IDS -o /path/to/save/somedockersimages.tar
Finally, if you want to export multiple many images, with one .tar file per images (not disk efficient: common layer are saved in each .tar file):
docker images | awk '{if ($1 ~ /^(openshift|centos)/) print $1 " " $2 " " $3 }' | tr -c "a-z A-Z0-9_.\n-" "%" | while read REPOSITORY TAG IMAGE_ID
do
echo "== Saving $REPOSITORY $TAG $IMAGE_ID =="
docker save -o /path/to/save/$REPOSITORY-$TAG-$IMAGE_ID.tar $IMAGE_ID
done
You may also want to save the list of images so that the restored images can be tagged:
docker images | sed '1d' | awk '{print $1 " " $2 " " $3}' > mydockersimages.list
On the remote machine, you can load (import) the images:
docker load -i /path/to/save/mydockersimages.tar
and tag the imported images:
while read REPOSITORY TAG IMAGE_ID
do
echo "== Tagging $REPOSITORY $TAG $IMAGE_ID =="
docker tag "$IMAGE_ID" "$REPOSITORY:$TAG"
done < mydockersimages.list
For more information about save/load, read: https://stackoverflow.com/questions/23935141/how-to-copy-docker-images-from-one-host-to-another-without-via-repository
Solution 2 - Docker
With windows server hosting the command is a little different. Using @EthanSN answer I found the following worked - using go formatting:
docker save $(docker images --format '{{.Repository}}:{{.Tag}}') -o allinone.tar
And the load command:
docker load -i allinone.tar
Worked perfectly with no need for the importing machine to download any images.
Solution 3 - Docker
Save all images with name:tag to one tar file:
docker save $(docker images | sed '1d' | awk '{print $1 ":" $2 }') -o allinone.tar
Then, load all images:
docker load -i allinone.tar
Solution 4 - Docker
Thanks a lot all your awnsers, but I find a basic and safe solution to save:
docker save -o ubuntu.tar myjenk:latest jenkins/jenkins:lts
REPOSITORY TAG
myjenk latest
jenkins/jenkins lts
after to restore images:
docker load < ubuntu.tar
Solution 5 - Docker
Script to perform Docker save and load function (tried and tested):
Docker Save:
#!/bin/bash
#files will be saved in the dir 'Docker_images'
mkdir Docker_images
cd Docker_images
directory=`pwd`
c=0
#save the image names in 'list.txt'
doc= docker images | awk '{print $1}' > list.txt
printf "START \n"
input="$directory/list.txt"
#Check and create the image tar for the docker images
while IFS= read -r line
do
one=`echo $line | awk '{print $1}'`
two=`echo $line | awk '{print $1}' | cut -c 1-3`
if [ "$one" != "<none>" ]; then
c=$((c+1))
printf "\n $one \n $two \n"
docker save -o $two$c'.tar' $one
printf "Docker image number $c successfully converted: $two$c \n \n"
fi
done < "$input"
Docker Load:
#!/bin/bash
cd Docker_images/
directory=`pwd`
ls | grep tar > files.txt
c=0
printf "START \n"
input="$directory/files.txt"
while IFS= read -r line
do
c=$((c+1))
printf "$c) $line \n"
docker load -i $line
printf "$c) Successfully created the Docker image $line \n \n"
done < "$input"
Solution 6 - Docker
Using a registry, you can have a workflow similar to Git. Modify your container locally, commit changes to a local image, then push your image to the registry. You can then pull the image from your remote machine.
You can use the public Docker Hub, or you can set up your own registry server.
Solution 7 - Docker
You can use Bash to iterate through the response to docker images running docker save -o <save image to path> <image name> on each image, and then (assuming you saved them all to one folder) you can zip it up and scp it to the remote host.