Chapter 3 Upgrading Oracle Container Runtime for Docker

This chapter describes the steps required to perform an upgrade of Oracle Container Runtime for Docker on an Oracle Linux 7 host.

Note

Docker requires that you configure the system to use the Unbreakable Enterprise Kernel Release 4 (UEK R4) or later and boot the system with this kernel.

Using the Docker configuration files in /etc/sysconfig is deprecated. Instead, you should use the /etc/docker/daemon.json configuration file and systemd drop-in configuration files in /etc/systemd/system/docker.service.d as required.

After adding or modifying a drop-in file while the docker service is running, run the command systemctl daemon-reload to tell systemd to reload the configuration for the service.