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Description of problem:
$ rpm -q docker
docker-1.12.6-28.git1398f24.el7.x86_64
$ rpm -q --scripts docker
preinstall scriptlet (using /bin/sh):
getent passwd dockerroot > /dev/null || /usr/sbin/useradd -r -d /var/lib/docker -s /sbin/nologin -c "Docker User" dockerroot
if [ !$(systemctl --quiet is-active docker.service) ]; then
echo "Stopping containers..."
/usr/bin/docker stop $(/usr/bin/docker ps -a -q)
fi
exit 0
...
The check is reversed here and will cause errors like below when updating docker on hosts where it is not started:
Stopping containers...
Cannot connect to the Docker daemon. Is the docker daemon running on this host?
"docker stop" requires at least 1 argument(s).
See 'docker stop --help'.
Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...]
Stop one or more running containers
Updating : 2:docker-1.12.6-28.git1398f24.el7.x86_64 20/64
Version-Release number of selected component (if applicable):
docker-1.12.6-28.git1398f24.el7
Description of problem: $ rpm -q docker docker-1.12.6-28.git1398f24.el7.x86_64 $ rpm -q --scripts docker preinstall scriptlet (using /bin/sh): getent passwd dockerroot > /dev/null || /usr/sbin/useradd -r -d /var/lib/docker -s /sbin/nologin -c "Docker User" dockerroot if [ !$(systemctl --quiet is-active docker.service) ]; then echo "Stopping containers..." /usr/bin/docker stop $(/usr/bin/docker ps -a -q) fi exit 0 ... The check is reversed here and will cause errors like below when updating docker on hosts where it is not started: Stopping containers... Cannot connect to the Docker daemon. Is the docker daemon running on this host? "docker stop" requires at least 1 argument(s). See 'docker stop --help'. Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...] Stop one or more running containers Updating : 2:docker-1.12.6-28.git1398f24.el7.x86_64 20/64 Version-Release number of selected component (if applicable): docker-1.12.6-28.git1398f24.el7