The error message "docker: 'stack' is not a docker command" suggests that the version of Docker being used does not support the "stack" command. The solution to this problem is to upgrade Docker to version 1.13 or higher. In the given example, the solution is to upgrade Docker to version 1.13 by downloading the required RPM packages from the Docker project repository and installing them using the "rpm -i" command. After the installation, the "systemctl enable docker" and "systemctl start docker" commands are used to enable and start the Docker service.While deploying the docker services using stack deploy command. We got following error.
docker stack deploy -c docker-compose.yml appslab
docker: 'stack' is not a docker command.
See 'docker --help'.
Upgrade docker to 1.13
In Centos 7 we used the following to get the docker upgraded. Now the docket-latest package in centos7 is upgraded to 1.13
#package for docker-engine-selinux
yum install -y policycoreutils-python
rpm -i docker-engine-selinux-1.13.1-1.el7.centos.noarch.rpm
#package for docker-engine
yum install -y libtool-ltdl libseccomp
rpm -i docker-engine-1.13.1-1.el7.centos.x86_64.rpm
#remove rpm packages
rm docker-engine-* -f
#enable systemd service
systemctl enable docker
systemctl start docker
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