This adds an `--oom-score-adjust` flag to the daemon so that the value
provided can be set for the docker daemon's process. The default value
for the flag is -500. This will allow the docker daemon to have a
less chance of being killed before containers do. The default value for
processes is 0 with a min/max of -1000/1000.
-500 is a good middle ground because it is less than the default for
most processes and still not -1000 which basically means never kill this
process in an OOM condition on the host machine. The only processes on
my machine that have a score less than -500 are dbus at -900 and sshd
and xfce( my window manager ) at -1000. I don't think docker should be
set lower, by default, than dbus or sshd so that is why I chose -500.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Add a `--network` flag which replaces `--net` without deprecating it
yet. The `--net` flag remains hidden and supported.
Add a `--network-alias` flag which replaces `--net-alias` without deprecating
it yet. The `--net-alias` flag remains hidden and supported.
Signed-off-by: Arnaud Porterie (icecrime) <arnaud.porterie@docker.com>
The "none" option was not added to the documentation.
This adds an example, and adds additional information
on manually accepting or rejecting a node.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Add option to skip kernel check for older kernels which have been patched to support multiple lower directories in overlayfs.
Fixes#24023
Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
Kernel memory is not allowed to be updated if container is
running, it's not actually a precise kernel limitation.
Before kernel version 4.6, kernel memory will not be accounted
until kernel memory limit is set, if a container created with
kernel memory initialized, kernel memory is accounted as soon
as process created in container, so kernel memory limit update
is allowed afterward. If kernel memory is not initialized,
kernel memory consumed by processes in container will not be
accounted, so we can't update the limit because the account
will be wrong.
So update kernel memory of a running container with kernel memory
initialized is allowed, we should soften the limitation by docker.
Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
- Update ps with `--last` flag
- Update commands with current output
- Make sure hugo does not detect the wrong language
- Update usage for `tag` command to be more coherent with the other ones
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
The current behavior of `docker swarm init` is to set up a swarm that
has no secret for joining, and does not require manual acceptance for
workers. Since workers may sometimes receive sensitive data such as pull
credentials, it makes sense to harden the defaults.
This change makes `docker swarm init` generate a random secret if none
is provided, and print it to the terminal. This secret will be needed to
join workers or managers to the swarm. In addition to improving access
control to the cluster, this setup removes an avenue for
denial-of-service attacks, since the secret is necessary to even create
an entry in the node list.
`docker swarm init --secret ""` will set up a swarm without a secret,
matching the old behavior. `docker swarm update --secret ""` removes the
automatically generated secret after `docker swarm init`.
Closes#23785
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
In #24159, the title field of `docker node ls` has been
changed from NAME to HOSTNAME. However, in the docs the
NAMEs are still used for the output of `docker node ls`.
This fix updates docs so that NAME field is changed to
HOSTNAME for all `docker node ls`.
This fix is related to #24159 and #24090.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
The --auto-accept documentation currently says that both worker and
manager nodes are automatically accepted by default. Correct it.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
For consistency with other filters (such as
"is-official"), this renames the desired_state
filter to "desired-state".
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Make `--dispatcher-heartbeat-period` a duration in `docker swarm
update`, allowing to express the value as "5s", "1h", etc.
Signed-off-by: Arnaud Porterie (icecrime) <arnaud.porterie@docker.com>
fixing links after moving surfacing tutorials
fixing more links for the newly located tutorials
Signed-off-by: Victoria Bialas <victoria.bialas@docker.com>
Michael Crosby
Vincent Demeester
Sebastiaan van Stijn
Mei ChunTao
Arnaud Porterie (icecrime)
Derek McGowan
johnharris85
Qiang Huang
Charles Smith
Aaron Lehmann
Anil Madhavapeddy
Yong Tang
Otto Kekäläinen
Antonio Murdaca
Adolfo Ochagavía
Alan Thompson
Nicola Kabar
allencloud
Harald Albers
orkaa
Neil Peterson
Shishir Mahajan
Sven Dowideit
Charles Chan
Tonis Tiigi
Victor Vieux
Alessandro Boch
Kenfe-Mickael Laventure
Victoria Bialas
Amit Shukla