dockerd handles SIGQUIT by dumping all goroutine stacks to standard
error and exiting. In contrast, the Go runtime's default SIGQUIT
behaviour... dumps all goroutine stacks to standard error and exits.
The default SIGQUIT behaviour is implemented directly in the runtime's
signal handler, and so is both more robust to bugs in the Go runtime and
does not perturb the state of the process to anywhere near same degree
as dumping goroutine stacks from a user goroutine. The only notable
difference from a user's perspective is that the process exits with
status 2 instead of 128+SIGQUIT.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Since b58de39ca7, this option was now only used
to produce a fatal error when starting the daemon. That change is in the 23.0
release, so we can remove it from the master branch.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This type was added in 677a6b3506, and named
"common", because at the time, the "docker" and "dockerd" (daemon) code
were still in the same repository, and shared this type. Renaming it, now
that's no longer the case.
As there are no external consumers of this type, I'm not adding an alias.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The configDir (and "DOCKER_CONFIG" environment variable) is now only used
for the default location for TLS certificates to secure the daemon API.
It is a leftover from when the "docker" and "dockerd" CLI shared the same
binary, allowing the DOCKER_CONFIG environment variable to set the location
for certificates to be used by both.
This patch merges it into cmd/dockerd, which is where it was used.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The cli package is a leftover from when the "docker" and "dockerd" cli
were both maintained in this repository; the only consumer of this is
now the dockerd CLI, so we can move this code (it should not be imported
by anyone).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This is only used for tests, and the key is not verified anymore, so
instead of creating a key and storing it, we can just use an ad-hoc
one.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Turned out that the loadOrCreateTrustKey() utility was doing exactly the
same as libtrust.LoadOrCreateTrustKey(), so making it a thin wrapped. I kept
the tests to verify the behavior, but we could remove them as we only need this
for our integration tests.
The storage location for the generated key was changed (again as we only need
this for some integration tests), so we can remove the TrustKeyPath from the
config.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
While this was convenient for our use, it's somewhat unexpected for a function
that writes a file to also create all parent directories; even more because
this function may be executed as root.
This patch makes the package more "safe" to use as a generic package by removing
this functionality, and leaving it up to the caller to create parent directories,
if needed.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This fix tries to address issues raised in #44346.
The max-concurrent-downloads and max-concurrent-uploads limits are applied for the whole engine and not for each pull/push command.
Signed-off-by: Luis Henrique Mulinari <luis.mulinari@gmail.com>
This type felt really redundant; `pidfile.New()` takes the path of the file to
create as an argument, so this is already known. The only thing the PIDFile
type provided was a `Remove()` method, which was just calling `os.Remove()` on
the path of the file.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Previously we waited for 60 seconds after the service faults to restart
it. However, there isn't much benefit to waiting this long. We expect
15 seconds to be a more reasonable delay.
Co-Authored-by: Kevin Parsons <kevpar@microsoft.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
golang.org/x/sys/windows now implements this, so we can use that
instead of a local implementation.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The `IsAnInteractiveSession` was deprecated, and `IsWindowsService` is marked
as the recommended replacement.
For details, see 280f808b4a
> CL 244958 includes isWindowsService function that determines if a
> process is running as a service. The code of the function is based on
> public .Net implementation.
>
> IsAnInteractiveSession function implements similar functionality, but
> is based on an old Stackoverflow post., which is not as authoritative
> as code written by Microsoft for their official product.
>
> This change copies CL 244958 isWindowsService function into svc package
> and makes it public. The intention is that future users will prefer
> IsWindowsService to IsAnInteractiveSession.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
cmd/dockerd/trap/trap_linux_test.go:29:29: empty-lines: extra empty line at the end of a block (revive)
cmd/dockerd/daemon.go:327:35: empty-lines: extra empty line at the start of a block (revive)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
After discussing in the maintainers meeting, we concluded that Slowloris attacks
are not a real risk other than potentially having some additional goroutines
lingering around, so setting a long timeout to satisfy the linter, and to at
least have "some" timeout.
libnetwork/diagnostic/server.go:96:10: G112: Potential Slowloris Attack because ReadHeaderTimeout is not configured in the http.Server (gosec)
srv := &http.Server{
Addr: net.JoinHostPort(ip, strconv.Itoa(port)),
Handler: s,
}
api/server/server.go:60:10: G112: Potential Slowloris Attack because ReadHeaderTimeout is not configured in the http.Server (gosec)
srv: &http.Server{
Addr: addr,
},
daemon/metrics_unix.go:34:13: G114: Use of net/http serve function that has no support for setting timeouts (gosec)
if err := http.Serve(l, mux); err != nil && !strings.Contains(err.Error(), "use of closed network connection") {
^
cmd/dockerd/metrics.go:27:13: G114: Use of net/http serve function that has no support for setting timeouts (gosec)
if err := http.Serve(l, mux); err != nil && !strings.Contains(err.Error(), "use of closed network connection") {
^
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The `-g` / `--graph` options were soft deprecated in favor of `--data-root` in
261ef1fa27 (v17.05.0) and at the time considered
to not be removed. However, with the move towards containerd snapshotters, having
these options around adds additional complexity to handle fallbacks for deprecated
(and hidden) flags, so completing the deprecation.
With this patch:
dockerd --graph=/var/lib/docker --validate
Flag --graph has been deprecated, Use --data-root instead
unable to configure the Docker daemon with file /etc/docker/daemon.json: merged configuration validation from file and command line flags failed: the "graph" config file option is deprecated; use "data-root" instead
mkdir -p /etc/docker
echo '{"graph":"/var/lib/docker"}' > /etc/docker/daemon.json
dockerd --validate
unable to configure the Docker daemon with file /etc/docker/daemon.json: merged configuration validation from file and command line flags failed: the "graph" config file option is deprecated; use "data-root" instead
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Makes sure that tests use a config struct that's more representative
to how it's used in the code.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This centralizes more defaults, to be part of the config struct that's
created, instead of interweaving the defaults with other code in various
places.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- return early if we're expecting a system-containerd
- rename `initContainerD` to `initContainerd` ':)
- remove .Config to reduce verbosity
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Change the log-level for messages about starting the managed containerd instance
to be the same as for the main API. And remove a redundant debug-log.
With this patch:
dockerd
INFO[2022-08-11T11:46:32.573299176Z] Starting up
INFO[2022-08-11T11:46:32.574304409Z] containerd not running, starting managed containerd
INFO[2022-08-11T11:46:32.575289181Z] started new containerd process address=/var/run/docker/containerd/containerd.sock module=libcontainerd pid=5370
cmd/dockerd: initContainerD(): clean-up some logs
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
the `--log-level` flag overrides whatever is in the containerd configuration file;
f033f6ff85/cmd/containerd/command/main.go (L339-L352)
Given that we set that flag when we start the containerd binary, there is no need
to write it both to the generated config-file and pass it as flag.
This patch also slightly changes the behavior; as both dockerd and containerd use
"info" as default log-level, don't set the log-level if it's the default.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Containerd, like dockerd has a OOMScore configuration option to adjust its own
OOM score. In dockerd, this option was added when default installations were not
yet running the daemon as a systemd unit, which made it more complicated to set
the score, and adding a daemon option was convenient.
A binary adjusting its own score has been frowned upon, as it's more logical to
make that the responsibility of the process manager _starting_ the daemon, which
is what we did for dockerd in 21578530d7.
There have been discussions on deprecating the daemon flag for dockerd, and
similar discussions have been happening for containerd.
This patch changes how we set the OOM score for the containerd child process,
and to have dockerd (supervisor) set the OOM score, as it's acting as process
manager in this case (performing a role similar to systemd otherwise).
With this patch, the score is still adjusted as usual, but not written to the
containerd configuration file;
dockerd --oom-score-adjust=-123
cat /proc/$(pidof containerd)/oom_score_adj
-123
As a follow-up, we may consider to adjust the containerd OOM score based on the
daemon's own score instead of on the `cli.OOMScoreAdjust` configuration so that
we will also adjust the score in situations where dockerd's OOM score was set
through other ways (systemd or manually adjusting the cgroup). A TODO was added
for this.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- properly use filepath.Join() for Windows paths
- use getDaemonConfDir() to get the path for storing daemon.json
- return error instead of logrus.Fatal(). The logrus.Fatal() was a left-over
from when Cobra was not used, and appears to have been missed in commit
fb83394714, which did the conversion to Cobra.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The existing implementation used a `nil` value for the CRI plugin's configuration
to indicate that the plugin had to be disabled. Effectively, the `Plugins` value
was only used as an intermediate step, only to be removed later on, and to instead
add the given plugin to `DisabledPlugins` in the containerd configuration.
This patch removes the intermediate step; as a result we also don't need to mask
the containerd `Plugins` field, which was added to allow serializing the toml.
A code comment was added as well to explain why we're (currently) disabling the
CRI plugin by default, which may help future visitors of the code to determin
if that default is still needed.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Initial pull/ls works
Build is deactivated if the feature is active
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Older versions of Go don't format comments, so committing this as
a separate commit, so that we can already make these changes before
we upgrade to Go 1.19.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Set the defaults when constructing the config, instead of setting them
indirectly through the command-line flags.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This function depends on flags having been parsed before it's used;
add a safety-net in case this function would be called before that.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This prevents creating a socket and touching the filesystem before
trying to use a port that was already in use by a container.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The LoopkupImage method is only used by the inspect image route and
returns an api/type struct. The depenency to api/types of the
daemon/images package is wrong, the daemon doesn't need to know about
the api types.
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
