Last active
August 7, 2017 04:40
-
-
Save gamma/55e1669aa7f4a529bc52d6aa104290e2 to your computer and use it in GitHub Desktop.
Rolling Update with docker-compose and old Swarm Image. Expects docker-compose.yml side-by-side
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #!/bin/bash | |
| # Use the command line arguments as input. Each argument is a service. | |
| SERVICE_LIST=`echo "$@" | tr ' ' '\n'` | |
| if [ -z "${SERVICE_LIST[@]}" ]; then | |
| SERVICE_LIST=`docker-compose config --services` | |
| fi | |
| # Check for all services in the compose file, scale them to "two" | |
| echo "+++++++++++++++++++++++++" | |
| echo "Scaling the containers up" | |
| printf "%s\0" "${SERVICE_LIST[@]}" | xargs -ISERVICE echo "--scale SERVICE=2" | xargs -0 echo | tr '\n' ' ' | xargs docker-compose up -d --no-recreate | |
| echo "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++" | |
| for i in {10..0} ; do | |
| echo -ne "Waiting for all containers to have started. Actually just ${i}s.\r " | |
| sleep 1 | |
| done | |
| echo "Done waiting. " | |
| # walk the services, find the lowest number and stop that container | |
| for SERVICE in $SERVICE_LIST ; do | |
| echo "-------------------`echo ${SERVICE} | sed 's/./-/g'`-" | |
| echo "Cleaning Service: '${SERVICE}'" | |
| NUMBER=`docker-compose ps ${SERVICE} | grep ${SERVICE} | awk '{print $1}' | awk -F_ '{print $3}' | sort | head -n1` | |
| docker-compose ps $SERVICE | awk '{print $1}' | grep "${SERVICE}_${NUMBER:-_}" | xargs docker stop | xargs docker rm -f | |
| done | |
| # walk the services, scale them back to one | |
| echo "+++++++++++++++++++++++++++" | |
| echo "Scaling the containers down" | |
| printf "%s\0" "${SERVICE_LIST[@]}" | xargs -ISERVICE echo "--scale SERVICE=1" | xargs -0 echo | tr '\n' ' ' | xargs docker-compose up -d --no-recreate |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment