Fixes#6647: Other upstart jobs that depend on docker by specifying
"start on started docker" would often start before the docker daemon was
ready, so they'd fail with "Cannot connect to the Docker daemon" or
"dial unix /var/run/docker.sock: no such file or directory".
This is because "docker -d" doesn't daemonize, it runs in the
foreground, so upstart can't know when the daemon is ready to receive
incoming connections. (Traditionally, a daemon will create all necessary
sockets and then fork to signal that it's ready; according to @tianon
this "isn't possible in Go"[1]. See also [2].)
Presumably this isn't a problem with systemd init with its socket
activation. The SysV init scripts may or may not suffer from this
problem but I have no motivation to fix them.
This commit adds a "post-start" stanza to the upstart configuration
that waits for the socket to be available. Upstart won't emit the
"started" event until the "post-start" script completes.[3]
Note that the system administrator might have specified a different path
for the socket, or a tcp socket instead, by customising
/etc/default/docker. In that case we don't try to figure out what the
new socket is, but at least we don't wait in vain for
/var/run/docker.sock to appear.
If the main script (`docker -d`) fails to start, the `initctl status
$UPSTART_JOB | grep -q "stop/"` line ensures that we don't loop forever.
I stole this idea from Steve Langasek.[4]
If for some reason we *still* end up in an infinite loop --I guess
`docker -d` must have hung-- then at least we'll be able to see the
"Waiting for /var/run/docker.sock" debug output in
/var/log/upstart/docker.log.
I considered using inotifywait instead of sleep, but it isn't worth
the complexity & the extra dependency.
[1] https://github.com/docker/docker/issues/6647#issuecomment-47001613
[2] https://code.google.com/p/go/issues/detail?id=227
[3] http://upstart.ubuntu.com/cookbook/#post-start
[4] https://lists.ubuntu.com/archives/upstart-devel/2013-April/002492.html
Signed-off-by: David Röthlisberger <david@rothlis.net>
Upstream-commit: f42c0a53a38a2a141bec8768d0836a3726de4a83
Component: engine
_docker_run and _docker_create had only one differing line.
This refactoring features:
- direct completion for both commands to the same function
- factor out the common arguments, sort & format them nicely
- compute the argument for _docker_pos_first_nonflag.
Signed-off-by: Harald Albers <github@albersweb.de>
Upstream-commit: 46b104bd3977c4777b0d99ba6c190f37ae780245
Component: engine
so that docker is started with `docker -d -s overlay` instead of `docker -d -s overlayfs`
Signed-off-by: Lénaïc Huard <lhuard@amadeus.com>
Upstream-commit: d680ca5c96484474757fb6f92274f47bf1520631
Component: engine
Current description is misleading. It make an impression the --icc=false
prevents containers to talk with each other.
Signed-off-by: Michal Minar <miminar@redhat.com>
Docker-DCO-1.1-Signed-off-by: Michal Minar <miminar@redhat.com> (github: SvenDowideit)
Upstream-commit: a61a4a31882335020cfbffc49ffe274847a5c803
Component: engine
Since Linux 3.18-rc6, overlayfs has been renamed overlay.
This change was introduced by the following commit in linux.git:
ef94b1864d1ed5be54376404bb23d22ed0481feb ovl: rename filesystem type to "overlay"
Signed-off-by: Lénaïc Huard <lhuard@amadeus.com>
Upstream-commit: c57317893a743720a241ae328d1bdf7bd02b1fea
Component: engine
The -n and --networking options were removed because they are
unsupported.
Bash completion should not reveal the existence of otherwise
undocumented unsupported options.
Signed-off-by: Harald Albers <github@albersweb.de>
Upstream-commit: eac9f2e5c4fa47b0ef1e064ac2bc62be6f3a3c99
Component: engine
Allow for custom debootstrap wrappers like qemu-debootstrap in contrib/mkimage/debootstrap
Upstream-commit: 27127437a6249bbf6f70707ff681992eb00ac47b
Component: engine
A lot of flags have been added on the output of `docker help`. Use a
more robust method to extract the list of available subcommands by
spotting the `Command:` line and the next blank line.
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Upstream-commit: 34fe2a372576907cb7ec26cf22ac4e93b8974f6e
Component: engine
Next steps, in another PR, would be:
- make all logging go through the logrus stuff
- I'd like to see if we can remove the env var stuff (like DEBUG) but we'll see
Closes#5198
Signed-off-by: Doug Davis <dug@us.ibm.com>
Upstream-commit: 2facc0467336a80f48c765dbdbd803055a431aa9
Component: engine
Signal proxy does work only in non-TTY mode (--tty=false). Man pages and
commands should not lie about it.
Signed-off-by: Michal Minar <miminar@redhat.com>
Upstream-commit: e71f241c4b8006f097e4c63f7b3ea28d4591ddee
Component: engine
So far, it looks like the declarations are not used, and so its safer not to
confuse people into thinking they do something.
Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Upstream-commit: 6ed610fb8014d500e001bb0677f0e1af0dc9312d
Component: engine
zsh completion is updated with the content of
felixr/docker-zsh-completion.
The major change since the last merge is the addition of
exec/create (but they were already present in the docker repository) as
well as pause/unpause/logout/events and the use of short/long options
when they are available. Some missing options were also added.
12f00abd7178 Add completion for `exec'
4e2faa075f9a Merge `run' and `create' commands.
34134de077de Add missing long/short options for most commands.
d09f62339ab5 Add completion for `pause' and `unpause'
e4754c3b3b9d Add completion for `logout'
e0935eb3d5d2 Add completion for `events'
dae353cb9afb Add completion for `create`
Docker-DCO-1.1-Signed-off-by: Vincent Bernat <vincent@bernat.im> (github: vincentbernat)
Upstream-commit: ed7934fd63ed52ad0086aaac62203e58e304bcb7
Component: engine
Two problems how they are today:
In the current systemd unit files it is impossible to have the
docker.service started at system boot. Instead enableing docker.service
will actually enable docker.socket. This is a problem, as that means
any container with --restart=always will not launch on reboot. And of
course as soon as you log in and type docker ps, docker.service will be
launched and now your images are running. Talk about a PITA to debug!
The fix is to just install docker.service when people ask docker.service
to be enabled. If an admin wants to enable docker.socket instead, that
is fine and will work just as it does today.
The second problem is a common docker devel workflow, although not
something normal admins would hit. In this case consider a dev doing
the following:
systemctl stop docker.service
docker -d
[run commands]
[^C]
systemctl start docker.service
Running docker -d (without -F fd://) will clean up the
/var/run/docker.sock when it exits. Remember, you just ran the docker
daemon not telling it about socket actviation, so cleaning up its socket
makes sense! The new docker, started by systemd will expect socket
activation, but the last one cleaned up the docker.sock. So things are
just broken. You can, today, work around this by restarting
docker.socket. This fixes it by telling docker.socket that it is
PartOf=docker.service. So when docker.service is
started/stopped/restarted docker.socket will also be
started/stopped/restarted. So the above semi-common devel workflow will
be fine. When docker.service is stopped, so is docker.socket, docker
-d (without -F fd://) will create and delete /var/run/docker.sock.
Starting docker.service again will restart docker.socket, which will
create the file an all is happy in the word.
Signed-off-by: Eric Paris <eparis@redhat.com>
Upstream-commit: 053c3557b3198466ecfbe066fefdbab2a78771d5
Component: engine
Failure to do this means that file capabilites are not preserved in the image.
Ping fails to work as a non-root user if cap_net_raw is capability is not set
Signed-off-by: Dan Griffin <dgriffin@peer1.com>
Upstream-commit: e857716d2d881aaf1cf5a775d02ee5b109d9e423
Component: engine
The biggest/bestest change here is cutting down on the number of calls to Docker in the filtering helpers (`__docker_containers_running`, etc), especially calls to the really heavy `docker images`.
Signed-off-by: Andrew Page <admwiggin@gmail.com>
Upstream-commit: 0597b6445db0b0aeb4a0459f3af4f074a865a42f
Component: engine
debootstrap needs the suite as the second argument, for this the script
reorders arguments beginning with a minus but components separated by
space, as stated by the help message, is not handled and will lead to
the rootfs being passed as suite to debootstrap.
The poor mans solution is to fix the help message to pass the long
option as one argument.
Signed-off-by: Julian Taylor <jtaylor.debian@googlemail.com>
Upstream-commit: 34672240b4e69f5f50448e462540bb0259eecf31
Component: engine
security-opts will allow you to customise the security subsystem.
For example the labeling system like SELinux will run on a container.
--security-opt="label:user:USER" : Set the label user for the container
--security-opt="label:role:ROLE" : Set the label role for the container
--security-opt="label:type:TYPE" : Set the label type for the container
--security-opt="label:level:LEVEL" : Set the label level for the container
--security-opt="label:disabled" : Turn off label confinement for the container
Since we are passing a list of string options instead of a space separated
string of options, I will change function calls to use InitLabels instead of
GenLabels. Genlabels interface is Depracated.
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
Upstream-commit: 87e732a0f3503517d7a66804bb9a7f74977347e5
Component: engine
This change will allow the Docker daemon's init script to wait up to 5
minutes before being forcibly terminated by the initscript. Many
non-trivial containers will take more than the default 3 seconds to
stop, which can result in containers whose rootfs is still mounted and
will not restart when the daemon starts up again, or worse, orphan
processes that are still running.
Signed-off-by: Steven Merrill <steven.merrill@gmail.com>
Upstream-commit: 640d2ef6f54d96ac4fc3f0f745cb1e6a35148607
Component: engine
zsh completion is updated with the content of
felixr/docker-zsh-completion.
The major change since the last merge is the removal of use of
sed/awk. This should help a lot OSX users who previously had to install
gawk and gsed.
Docker-DCO-1.1-Signed-off-by: Vincent Bernat <vincent@bernat.im> (github: vincentbernat)
Upstream-commit: dc2eab2cf48be2dc763f132fea1e1a72b0c8e03c
Component: engine
