I missed the most important COPY in 637ca59375
Copying the source code into the dev-container does not depend on the parent
layers, so can use the --link option as well.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The daemon has made a habit of mutating the DefaultRuntime and Runtimes
values in the Config struct to merge defaults. This would be fine if it
was a part of the regular configuration loading and merging process,
as is done with other config options. The trouble is it does so in
surprising places, such as in functions with 'verify' or 'validate' in
their name. It has been necessary in order to validate that the user has
not defined a custom runtime named "runc" which would shadow the
built-in runtime of the same name. Other daemon code depends on the
runtime named "runc" always being defined in the config, but merging it
with the user config at the same time as the other defaults are merged
would trip the validation. The root of the issue is that the daemon has
used the same config values for both validating the daemon runtime
configuration as supplied by the user and for keeping track of which
runtimes have been set up by the daemon. Now that a completely separate
value is used for the latter purpose, surprising contortions are no
longer required to make the validation work as intended.
Consolidate the validation of the runtimes config and merging of the
built-in runtimes into the daemon.setupRuntimes() function. Set the
result of merging the built-in runtimes config and default default
runtime on the returned runtimes struct, without back-propagating it
onto the config.Config argument.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The existing runtimes reload logic went to great lengths to replace the
directory containing runtime wrapper scripts as atomically as possible
within the limitations of the Linux filesystem ABI. Trouble is,
atomically swapping the wrapper scripts directory solves the wrong
problem! The runtime configuration is "locked in" when a container is
started, including the path to the runC binary. If a container is
started with a runtime which requires a daemon-managed wrapper script
and then the daemon is reloaded with a config which no longer requires
the wrapper script (i.e. some args -> no args, or the runtime is dropped
from the config), that container would become unmanageable. Any attempts
to stop, exec or otherwise perform lifecycle management operations on
the container are likely to fail due to the wrapper script no longer
existing at its original path.
Atomically swapping the wrapper scripts is also incompatible with the
read-copy-update paradigm for reloading configuration. A handler in the
daemon could retain a reference to the pre-reload configuration for an
indeterminate amount of time after the daemon configuration has been
reloaded and updated. It is possible for the daemon to attempt to start
a container using a deleted wrapper script if a request to run a
container races a reload.
Solve the problem of deleting referenced wrapper scripts by ensuring
that all wrapper scripts are *immutable* for the lifetime of the daemon
process. Any given runtime wrapper script must always exist with the
same contents, no matter how many times the daemon config is reloaded,
or what changes are made to the config. This is accomplished by using
everyone's favourite design pattern: content-addressable storage. Each
wrapper script file name is suffixed with the SHA-256 digest of its
contents to (probabilistically) guarantee immutability without needing
any concurrency control. Stale runtime wrapper scripts are only cleaned
up on the next daemon restart.
Split the derived runtimes configuration from the user-supplied
configuration to have a place to store derived state without mutating
the user-supplied configuration or exposing daemon internals in API
struct types. Hold the derived state and the user-supplied configuration
in a single struct value so that they can be updated as an atomic unit.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Ensure data-race-free access to the daemon configuration without
locking by mutating a deep copy of the config and atomically storing
a pointer to the copy into the daemon-wide configStore value. Any
operations which need to read from the daemon config must capture the
configStore value only once and pass it around to guarantee a consistent
view of the config.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Config reloading has interleaved validations and other fallible
operations with mutating the live daemon configuration. The daemon
configuration could be left in a partially-reloaded state if any of the
operations returns an error. Mutating a copy of the configuration and
atomically swapping the config struct on success is not currently an
option as config values are not copyable due to the presence of
sync.Mutex fields. Introduce a two-phase commit protocol to defer any
mutations of the daemon state until after all fallible operations have
succeeded.
Reload transactions are not yet entirely hermetic. The platform
reloading logic for custom runtimes on *nix could still leave the
directory of generated runtime wrapper scripts in an indeterminate state
if an error is encountered.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Historically, daemon.RegistryHosts() has returned a docker.RegistryHosts
callback function which closes over a point-in-time snapshot of the
daemon configuration. When constructing the BuildKit builder at daemon
startup, the return value of daemon.RegistryHosts() has been used.
Therefore the BuildKit builder would use the registry configuration as
it was at daemon startup for the life of the process, even if the
registry configuration is changed and the configuration reloaded.
Provide BuildKit with a RegistryHosts callback which reflects the
live daemon configuration after reloads so that registry operations
performed by BuildKit always use the same configuration as the rest of
the daemon.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Passing around a bare pointer to the map of configured features in order
to propagate to consumers changes to the configuration across reloads is
dangerous. Map operations are not atomic, so concurrently reading from
the map while it is being updated is a data race as there is no
synchronization. Use a getter function to retrieve the current features
map so the features can be retrieved race-free.
Remove the unused features argument from the build router.
Signed-off-by: Cory Snider <csnider@mirantis.com>
With this patch, the user-agent has information about the containerd-client
version and the storage-driver that's used when using the containerd-integration;
time="2023-06-01T11:27:07.959822887Z" level=info msg="listening on [::]:5000" go.version=go1.19.9 instance.id=53590f34-096a-4fd1-9c58-d3b8eb7e5092 service=registry version=2.8.2
...
172.18.0.1 - - [01/Jun/2023:11:30:12 +0000] "HEAD /v2/multifoo/blobs/sha256:c7ec7661263e5e597156f2281d97b160b91af56fa1fd2cc045061c7adac4babd HTTP/1.1" 404 157 "" "docker/dev go/go1.20.4 git-commit/8d67d0c1a8 kernel/5.15.49-linuxkit-pr os/linux arch/arm64 containerd-client/1.6.21+unknown storage-driver/overlayfs UpstreamClient(Docker-Client/24.0.2 \\(linux\\))"
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
It was not really "inserting" anything, just formatting and appending.
Simplify this by changing this in to a `getUpstreamUserAgent()` function
which returns the upstream User-Agent (if any) into a `UpstreamClient()`.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Use a const for the characters to escape, instead of implementing
this as a generic escaping function.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Before this, the client would report itself as containerd, and the containerd
version from the containerd go module:
time="2023-06-01T09:43:21.907359755Z" level=info msg="listening on [::]:5000" go.version=go1.19.9 instance.id=67b89d83-eac0-4f85-b36b-b1b18e80bde1 service=registry version=2.8.2
...
172.18.0.1 - - [01/Jun/2023:09:43:33 +0000] "HEAD /v2/multifoo/blobs/sha256:cb269d7c0c1ca22fb5a70342c3ed2196c57a825f94b3f0e5ce3aa8c55baee829 HTTP/1.1" 404 157 "" "containerd/1.6.21+unknown"
With this patch, the user-agent has the docker daemon information;
time="2023-06-01T11:27:07.959822887Z" level=info msg="listening on [::]:5000" go.version=go1.19.9 instance.id=53590f34-096a-4fd1-9c58-d3b8eb7e5092 service=registry version=2.8.2
...
172.18.0.1 - - [01/Jun/2023:11:27:20 +0000] "HEAD /v2/multifoo/blobs/sha256:c7ec7661263e5e597156f2281d97b160b91af56fa1fd2cc045061c7adac4babd HTTP/1.1" 404 157 "" "docker/dev go/go1.20.4 git-commit/8d67d0c1a8 kernel/5.15.49-linuxkit-pr os/linux arch/arm64 UpstreamClient(Docker-Client/24.0.2 \\(linux\\))"
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- Fix timeouts from very long raft messages
- fix: code optimization
- update dependencies
full diff: 75e92ce14f...01bb7a4139
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Build-cache for the build-stages themselves are already invalidated if the
base-images they're using is updated, and the COPY operations don't depend
on previous steps (as there's no overlap between artifacts copied).
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The default implementation of the containerd.Image interface provided by
the containerd operates on the parent index/manifest list of the image
and the platform matcher.
This isn't convenient when a specific manifest is already known and it's
redundant to search the whole index for a manifest that matches the
given platform matcher. It can also result in a different manifest
picked up than expected when multiple manifests with the same platform
are present.
This introduces a walkImageManifests which walks the provided image and
calls a handler with a ImageManifest, which is a simple wrapper that
implements containerd.Image interfaces and performs all containerd.Image
operations against a platform specific manifest instead of the root
manifest list/index.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
Resolver.setupIPTable() checks whether it needs to flush or create the
user chains used for NATing container DNS requests by testing for the
existence of the rules which jump to said user chains. Unfortunately it
does so using the IPTable.RawCombinedOutputNative() method, which
returns a non-nil error if the iptables command returns any output even
if the command exits with a zero status code. While that is fine with
iptables-legacy as it prints no output if the rule exists, iptables-nft
v1.8.7 prints some information about the rule. Consequently,
Resolver.setupIPTable() would incorrectly think that the rule does not
exist during container restore and attempt to create it. This happened
work work by coincidence before 8f5a9a741b
because the failure to create the already-existing table would be
ignored and the new NAT rules would be inserted before the stale rules
left in the table from when the container was last started/restored. Now
that failing to create the table is treated as a fatal error, the
incompatibility with iptables-nft is no longer hidden.
Switch to using IPTable.ExistsNative() to test for the existence of the
jump rules as it correctly only checks the iptables command's exit
status without regard for whether it outputs anything.
Signed-off-by: Cory Snider <csnider@mirantis.com>
The method to restore a network namespace takes a collection of
interfaces to restore with the options to apply. The interface names are
structured data, tuples of (SrcName, DstPrefix) but for whatever reason
are being passed into Restore() serialized to strings. A refactor,
f0be4d126d, accidentally broke the
serialization by dropping the delimiter. Rather than fix the
serialization and leave the time-bomb for someone else to trip over,
pass the interface names as structured data.
Signed-off-by: Cory Snider <csnider@mirantis.com>
Switching snapshotter implementations would result in an error when
preparing a snapshot, check that the image is indeed unpacked for the
current snapshot before trying to prepare a snapshot.
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
This type (as well as TarsumBackup), was used for the experimental --stream
support for the classic builder. This feature was removed in commit
6ca3ec88ae, which also removed uses of
the CachableSource type.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Adds a Dockerfile and make targets to update and validate
generated files (proto, seccomp default profile)
Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
