dc/os prereqs

dcos-prereq

sudo setenforce 0 && \
sudo sed -i --follow-symlinks 's/^SELINUX=.*/SELINUX=disabled/g' /etc/sysconfig/selinux
sudo tee /etc/yum.repos.d/docker.repo <<-'EOF'
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
sudo yum -y update --exclude="docker-engine*"
sudo mkdir -p /etc/systemd/system/docker.service.d
sudo tee /etc/systemd/system/docker.service.d/override.conf <<- EOF
[Service]
Restart=always
StartLimitInterval=0
RestartSec=15
ExecStartPre=-/sbin/ip link del docker0
ExecStart=
ExecStart=/usr/bin/dockerd --storage-driver=overlay
EOF
sudo yum install -y docker-engine-1.13.1 docker-engine-selinux-1.13.1
sudo systemctl start docker
sudo systemctl enable docker
sudo yum install -y wget
sudo yum install -y git
sudo yum install -y unzip
sudo yum install -y curl
sudo yum install -y xz
sudo yum install -y ipset
sudo getent group nogroup || sudo groupadd nogroup