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TASK_56-Save-load-transfer-Docker-image.sh
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TASK_56-Save-load-transfer-Docker-image.sh
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Start 2022-11-14 05:43:29
Finished 2022-11-14 07:03:35
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CONTENT:
I. REQUIREMENTS
II. STEPS
III. REFERENCES
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TASK 56: Save, Load and Transfer Docker Image
I. REQUIREMENTS:
One of the DevOps team members was working on to create a new custom docker image on App Server 1 in Stratos DC.
He is done with his changes and image is saved on same server with name beta:devops.
Recently a requirement has been raised by a team to use that image for testing, but the team wants to
test the same on App Server 3. So we need to provide them that image on App Server 3 in Stratos DC.
a. On App Server 1 save the image beta:devops in an archive.
b. Transfer the image archive to App Server 3.
c. Load that image archive on App Server 3 with same name and tag which was used on App Server 1.
Note: Docker is already installed on both servers; however, if its service is down please make sure to start it.
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II. STEPS
# Connect to server 1
sshpass -p 'xxxxx' ssh -o StrictHostKeyChecking=no tony@172.16.238.10
# Switch to root
sudo su -
# Check images
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
beta devops e7c53ea80a0e About a minute ago 117MB
ubuntu latest a8780b506fa4 11 days ago 77.8MB
# Save image to a tar file
docker save beta:devops > beta.tar
# Copy tar file to the second server
# Enter banner's password when prompted
scp -rp beta.tar banner@stapp03:/home/banner
# Logout of server 1
exit
# from jumphost, login to server 3
sshpass -p 'xxxxxx' ssh -o StrictHostKeyChecking=no banner@172.16.238.12
# Switch to root
sudo su -
# Check if docker is runnign
sudo systemctl status docker
# If its inactive, start
sudo systemctl start docker && sudo systemctl status docker
# Check if tar was transferred from app1 to app3
$ ls -l /home/banner/
total 116992
-rw-r--r-- 1 banner banner 119796736 Nov 13 22:53 beta.tar
# Load the image from the tar file
docker load -i /home/banner/beta.tar
# Verify
$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
beta devops e7c53ea80a0e 6 minutes ago 117MB
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III. REFERENCES
https://stackoverflow.com/questions/23935141/how-to-copy-docker-images-from-one-host-to-another-without-using-a-repository
https://kodekloud.com/community/t/save-load-and-transfer-docker-image/7099
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SUCCESS!
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