Skip to content

v1.12.6
Compare
Choose a tag to compare
@vieux vieux released this 11 Jan 01:35
· 3 commits to 1.12.x since this release
v1.12.6
78d1802

1.12.6 (2017-01-10)

IMPORTANT: Docker 1.12 ships with an updated systemd unit file for rpm
based installs (which includes RHEL, Fedora, CentOS, and Oracle Linux 7). When
upgrading from an older version of docker, the upgrade process may not
automatically install the updated version of the unit file, or fail to start
the docker service if;

  • the systemd unit file (/usr/lib/systemd/system/docker.service) contains local changes, or
  • a systemd drop-in file is present, and contains -H fd:// in the ExecStart directive

Starting the docker service will produce an error:

Failed to start docker.service: Unit docker.socket failed to load: No such file or directory.

or

no sockets found via socket activation: make sure the service was started by systemd.

To resolve this:

  • Backup the current version of the unit file, and replace the file with the
    version that ships with docker 1.12
  • Remove the Requires=docker.socket directive from the /usr/lib/systemd/system/docker.service file if present
  • Remove -H fd:// from the ExecStart directive (both in the main unit file, and in any drop-in files present).

After making those changes, run sudo systemctl daemon-reload, and sudo systemctl restart docker to reload changes and (re)start the docker daemon.

NOTE: Docker 1.12.6 will correctly validate that either an IPv6 subnet is provided or
that the IPAM driver can provide one when you specify the --ipv6 option.

If you are currently using the --ipv6 option without specifying the
--fixed-cidr-v6 option, the Docker daemon will refuse to start with the
following message:

Error starting daemon: Error initializing network controller: Error creating
                       default "bridge" network: failed to parse pool request
                       for address space "LocalDefault" pool " subpool ":
                       could not find an available, non-overlapping IPv6 address
                       pool among the defaults to assign to the network

To resolve this error, either remove the --ipv6 flag (to preserve the same
behavior as in Docker 1.12.3 and earlier), or provide an IPv6 subnet as the
value of the --fixed-cidr-v6 flag.

In a similar way, if you specify the --ipv6 flag when creating a network
with the default IPAM driver, without providing an IPv6 --subnet, network
creation will fail with the following message:

Error response from daemon: failed to parse pool request for address space
                            "LocalDefault" pool "" subpool "": could not find an
                            available, non-overlapping IPv6 address pool among
                            the defaults to assign to the network

To resolve this, either remove the --ipv6 flag (to preserve the same behavior
as in Docker 1.12.3 and earlier), or provide an IPv6 subnet as the value of the
--subnet flag.

The network network creation will instead succeed if you use an external IPAM driver
which supports automatic allocation of IPv6 subnets.

Runtime

Downloads

Regular

Linux 64bits tgz: https://get.docker.com/builds/Linux/x86_64/docker-1.12.6.tgz
Darwin/OSX 64bits client tgz: https://get.docker.com/builds/Darwin/x86_64/docker-1.12.6.tgz
Linux 32bits arm tgz: https://get.docker.com/builds/Linux/armel/docker-1.12.6.tgz
Windows 64bits zip: https://get.docker.com/builds/Windows/x86_64/docker-1.12.6.zip
Windows 32bits client zip: https://get.docker.com/builds/Windows/i386/docker-1.12.6.zip

With experimental features

Linux 64bits tgz: https://experimental.docker.com/builds/Linux/x86_64/docker-1.12.6.tgz
Darwin/OSX 64bits client tgz: https://experimental.docker.com/builds/Darwin/x86_64/docker-1.12.6.tgz
Linux 32bits arm tgz: https://experimental.docker.com/builds/Linux/armel/docker-1.12.6.tgz
Windows 64bits zip: https://experimental.docker.com/builds/Windows/x86_64/docker-1.12.6.zip
Windows 32bits client zip: https://experimental.docker.com/builds/Windows/i386/docker-1.12.6.zip

Assets 2