We merged #2950 with some nits still remaining, as Giuseppe was
going on PTO. This addresses those small requested changes.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
it is useful to migrate existing containers to a new version of
podman. Currently, it is needed to migrate rootless containers that
were created with podman <= 1.2 to a newer version which requires all
containers to be running in the same user namespace.
Closes: https://github.com/containers/libpod/issues/2935
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
We were never using it. It's actually a potentially quite sizable
field (very expensive to decode an array of structs!). Removing
it should do no harm.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
Docker's upstream name validation regex has two major differences
from ours that we pick up in this PR.
The first requires that the first character of a name is a letter
or number, not a special character.
The second allows periods in names.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
We accidentally patched this out trying to enable ns:/path/to/ns
This should restore the ability to configure nondefault CNI
networks with Podman, by ensuring that they request creation of a
network namespace.
Completely remove the WithNetNS() call when we do use an explicit
namespace from a path. We use that call to indicate that a netns
is going to be created - there should not be any question about
whether it actually does.
Fixes#2795
Signed-off-by: Matthew Heon <mheon@redhat.com>
Specifically, we want to be able to specify whether resolv.conf
and /etc/hosts will be create and bind-mounted into the
container.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
In lipod, we now log major events that occurr. These events
can be displayed using the `podman events` command. Each
event contains:
* Type (container, image, volume, pod...)
* Status (create, rm, stop, kill, ....)
* Timestamp in RFC3339Nano format
* Name (if applicable)
* Image (if applicable)
The format of the event and the varlink endpoint are to not
be considered stable until cockpit has done its enablement.
Signed-off-by: baude <bbaude@redhat.com>
allow to configure the path to the network-cmd binary, either via an
option flag --network-cmd-path or through the libpod.conf
configuration file.
This is currently used to customize the path to the slirp4netns
binary.
Closes: https://github.com/containers/libpod/issues/2506
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Add the ability to manually run a container's healthcheck command.
This is only the first phase of implementing the healthcheck.
Subsequent pull requests will deal with the exposing the results and
history of healthchecks as well as the scheduling.
Signed-off-by: baude <bbaude@redhat.com>
When removing volumes with rm --volumes we want to only remove
volumes that were created with the container. Volumes created
separately via 'podman volume create' should not be removed.
Also ensure that --rm implies volumes will be removed.
Fixes#2441
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
If this doesn't match, we end up not being able to access named
volumes mounted into containers, which is bad. Use the same
validation that we use for other critical paths to ensure this
one also matches.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
We want named volumes to be created in a subdirectory of the
c/storage graph root, the same as the libpod root directory is
now. As such, we need to adjust its location when the graph root
changes location.
Also, make a change to how we set the default. There's no need to
explicitly set it every time we initialize via an option - that
might conflict with WithStorageConfig setting it based on graph
root changes. Instead, just initialize it in the default config
like our other settings.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
If user specifies network namespace and the /etc/netns/XXX/resolv.conf
exists, we should use this rather then /etc/resolv.conf
Also fail cleaner if the user specifies an invalid Network Namespace.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
if --runtime is specified, then it has higher priority on the
runtime_path option, which was added for backward compatibility.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
The original intent behind the requirement was to ensure that, if
two SHM lock structs were open at the same time, we should not
make such a runtime available to the user, and should clean it up
instead.
It turns out that we don't even need to open a second SHM lock
struct - if we get an error mapping the first one due to a lock
count mismatch, we can just delete it, and it cleans itself up
when it errors. So there's no reason not to return a valid
runtime.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
We can't do renumbering after init - we need to open a
potentially invalid locks file (too many/too few locks), and then
potentially delete the old locks and make new ones.
We need to be in init to bypass the checks that would otherwise
make this impossible.
This leaves us with two choices: make RenumberLocks a separate
entrypoint from NewRuntime, duplicating a lot of configuration
load code (we need to know where the locks live, how many there
are, etc) - or modify NewRuntime to allow renumbering during it.
Previous experience says the first is not really a viable option
and produces massive code bloat, so the second it is.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
iFix builtin volumes to work with podman volume
Currently builtin volumes are not recored in podman volumes when
they are created automatically. This patch fixes this.
Remove container volumes when requested
Currently the --volume option on podman remove does nothing.
This will implement the changes needed to remove the volumes
if the user requests it.
When removing a volume make sure that no container uses the volume.
Signed-off-by: Daniel J Walsh dwalsh@redhat.com
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
we can define multiple OCI runtimes that can be chosen with
--runtime.
in libpod.conf is possible to specify them with:
[runtimes]
foo = [
"/usr/bin/foo",
"/usr/sbin/foo",
]
bar = [
"/usr/bin/foo",
"/usr/sbin/foo",
]
If the argument to --runtime is an absolute path then it is used
directly without any lookup in the configuration.
Closes: https://github.com/containers/libpod/issues/1750
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This deprecates the libpod.conf variable of `runtime_path=`, and now has
`runtimes=`, like a map for naming the runtime, preparing for a
`--runtime` flag to `podman run` (i.e. runc, kata, etc.)
Reference: https://github.com/containers/libpod/issues/1750
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
If one of storage GraphRoot or RunRoot are specified, but the
other is not, c/storage will not use the default, and will throw
an error instead. Ensure that in cases where this would happen,
we populate the fields with the c/storage defaults ourselves.
Signed-off-by: Matthew Heon <mheon@redhat.com>
Add support for podman volume and its subcommands.
The commands supported are:
podman volume create
podman volume inspect
podman volume ls
podman volume rm
podman volume prune
This is a tool to manage volumes used by podman. For now it only handle
named volumes, but eventually it will handle all volumes used by podman.
Signed-off-by: umohnani8 <umohnani@redhat.com>
Part of the motivation for 800eb863 (Hooks supports two directories,
process default and override, 2018-09-17, #1487) was [1]:
> We only use this for override. The reason this was caught is people
> are trying to get hooks to work with CoreOS. You are not allowed to
> write to /usr/share... on CoreOS, so they wanted podman to also look
> at /etc, where users and third parties can write.
But we'd also been disabling hooks completely for rootless users. And
even for root users, the override logic was tricky when folks actually
had content in both directories. For example, if you wanted to
disable a hook from the default directory, you'd have to add a no-op
hook to the override directory.
Also, the previous implementation failed to handle the case where
there hooks defined in the override directory but the default
directory did not exist:
$ podman version
Version: 0.11.2-dev
Go Version: go1.10.3
Git Commit: "6df7409cb5a41c710164c42ed35e33b28f3f7214"
Built: Sun Dec 2 21:30:06 2018
OS/Arch: linux/amd64
$ ls -l /etc/containers/oci/hooks.d/test.json
-rw-r--r--. 1 root root 184 Dec 2 16:27 /etc/containers/oci/hooks.d/test.json
$ podman --log-level=debug run --rm docker.io/library/alpine echo 'successful container' 2>&1 | grep -i hook
time="2018-12-02T21:31:19-08:00" level=debug msg="reading hooks from /usr/share/containers/oci/hooks.d"
time="2018-12-02T21:31:19-08:00" level=warning msg="failed to load hooks: {}%!(EXTRA *os.PathError=open /usr/share/containers/oci/hooks.d: no such file or directory)"
With this commit:
$ podman --log-level=debug run --rm docker.io/library/alpine echo 'successful container' 2>&1 | grep -i hook
time="2018-12-02T21:33:07-08:00" level=debug msg="reading hooks from /usr/share/containers/oci/hooks.d"
time="2018-12-02T21:33:07-08:00" level=debug msg="reading hooks from /etc/containers/oci/hooks.d"
time="2018-12-02T21:33:07-08:00" level=debug msg="added hook /etc/containers/oci/hooks.d/test.json"
time="2018-12-02T21:33:07-08:00" level=debug msg="hook test.json matched; adding to stages [prestart]"
time="2018-12-02T21:33:07-08:00" level=warning msg="implicit hook directories are deprecated; set --hooks-dir="/etc/containers/oci/hooks.d" explicitly to continue to load hooks from this directory"
time="2018-12-02T21:33:07-08:00" level=error msg="container create failed: container_linux.go:336: starting container process caused "process_linux.go:399: container init caused \"process_linux.go:382: running prestart hook 0 caused \\\"error running hook: exit status 1, stdout: , stderr: oh, noes!\\\\n\\\"\""
(I'd setup the hook to error out). You can see that it's silenly
ignoring the ENOENT for /usr/share/containers/oci/hooks.d and
continuing on to load hooks from /etc/containers/oci/hooks.d.
When it loads the hook, it also logs a warning-level message
suggesting that callers explicitly configure their hook directories.
That will help consumers migrate, so we can drop the implicit hook
directories in some future release. When folks *do* explicitly
configure hook directories (via the newly-public --hooks-dir and
hooks_dir options), we error out if they're missing:
$ podman --hooks-dir /does/not/exist run --rm docker.io/library/alpine echo 'successful container'
error setting up OCI Hooks: open /does/not/exist: no such file or directory
I've dropped the trailing "path" from the old, hidden --hooks-dir-path
and hooks_dir_path because I think "dir(ectory)" is already enough
context for "we expect a path argument". I consider this name change
non-breaking because the old forms were undocumented.
Coming back to rootless users, I've enabled hooks now. I expect they
were previously disabled because users had no way to avoid
/usr/share/containers/oci/hooks.d which might contain hooks that
required root permissions. But now rootless users will have to
explicitly configure hook directories, and since their default config
is from ~/.config/containers/libpod.conf, it's a misconfiguration if
it contains hooks_dir entries which point at directories with hooks
that require root access. We error out so they can fix their
libpod.conf.
[1]: https://github.com/containers/libpod/pull/1487#discussion_r218149355
Signed-off-by: W. Trevor King <wking@tremily.us>
When graphroot is set by the user, we should set libpod's static
directory to a subdirectory of that by default, to duplicate
previous behavior.
Signed-off-by: Matthew Heon <mheon@redhat.com>
Previous commits ensured that we would use database-configured
paths if not explicitly overridden.
However, our runtime generation did unconditionally override
storage config, which made this useless.
Move rootless storage configuration setup to libpod, and change
storage setup so we only override if a setting is explicitly
set, so we can still override what we want.
Signed-off-by: Matthew Heon <mheon@redhat.com>
To configure runtime fields from the database, we need to know
whether they were explicitly overwritten by the user (we don't
want to overwrite anything that was explicitly set). Store a
struct containing whether the variables we'll grab from the DB
were explicitly set by the user so we know what we can and can't
overwrite.
This determines whether libpod runtime and static dirs were set
via config file in a horribly hackish way (double TOML decode),
but I can't think of a better way, and it shouldn't be that
expensive as the libpod config is tiny.
Signed-off-by: Matthew Heon <mheon@redhat.com>
we need to allow users to expose ports to the host for the purposes
of networking, like a webserver. the port exposure must be done at
the time the pod is created.
strictly speaking, the port exposure occurs on the infra container.
Signed-off-by: baude <bbaude@redhat.com>
We are still requiring oci-systemd-hook to be installed in order to run
systemd within a container. This patch properly mounts
/sys/fs/cgroup/systemd/libpod_parent/libpod-UUID on /sys/fs/cgroup/systemd inside of container.
Since we need the UUID of the container, we needed to move Systemd to be a config option of the
container.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Also update some missing fields libpod.conf obtions in man pages.
Fix sort order of security options and add a note about disabling
labeling.
When a process requests a new label. libpod needs to reserve all
labels to make sure that their are no conflicts.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1406
Approved by: mheon
ALso cleanup files section or podman man page
Add description of policy.json
Sort alphabetically.
Add more info on oci hooks
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1487
Approved by: umohnani8
This is an incomplete fix, as it would be best for the libpod library to be in charge of coordinating the container's dependencies on the infra container. A TODO was left as such. UTS is a special case, because the docker library that namespace handling is based off of doesn't recognize a UTS based on another container as valid, despite the library being able to handle it correctly. Thus, it is left in the old way.
Signed-off-by: haircommander <pehunt@redhat.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1347
Approved by: mheon
