8f870c233f
* only shim v2 runc v2 ("io.containerd.runc.v2") is supported
* only PID metrics is implemented. Others should be implemented in separate PRs.
* lots of code duplication in v1 metrics and v2 metrics. Dedupe should be separate PR.
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
77 lines
2.3 KiB
Go
77 lines
2.3 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package server
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import (
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"context"
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"os"
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"github.com/containerd/cgroups"
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cgroupsv2 "github.com/containerd/cgroups/v2"
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"github.com/containerd/containerd/log"
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srvconfig "github.com/containerd/containerd/services/server/config"
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"github.com/containerd/containerd/sys"
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"github.com/containerd/ttrpc"
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specs "github.com/opencontainers/runtime-spec/specs-go"
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)
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// apply sets config settings on the server process
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func apply(ctx context.Context, config *srvconfig.Config) error {
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if config.OOMScore != 0 {
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log.G(ctx).Debugf("changing OOM score to %d", config.OOMScore)
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if err := sys.SetOOMScore(os.Getpid(), config.OOMScore); err != nil {
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log.G(ctx).WithError(err).Errorf("failed to change OOM score to %d", config.OOMScore)
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}
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}
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if config.Cgroup.Path != "" {
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if cgroups.Mode() == cgroups.Unified {
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cg, err := cgroupsv2.LoadManager("/sys/fs/cgroup", config.Cgroup.Path)
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if err != nil {
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if err != cgroupsv2.ErrCgroupDeleted {
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return err
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}
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if cg, err = cgroupsv2.NewManager("/sys/fs/cgroup", config.Cgroup.Path, nil); err != nil {
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return err
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}
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}
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if err := cg.AddProc(uint64(os.Getpid())); err != nil {
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return err
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}
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} else {
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cg, err := cgroups.Load(cgroups.V1, cgroups.StaticPath(config.Cgroup.Path))
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if err != nil {
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if err != cgroups.ErrCgroupDeleted {
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return err
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}
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if cg, err = cgroups.New(cgroups.V1, cgroups.StaticPath(config.Cgroup.Path), &specs.LinuxResources{}); err != nil {
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return err
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}
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}
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if err := cg.Add(cgroups.Process{
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Pid: os.Getpid(),
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}); err != nil {
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return err
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}
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}
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}
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return nil
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}
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func newTTRPCServer() (*ttrpc.Server, error) {
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return ttrpc.NewServer(ttrpc.WithServerHandshaker(ttrpc.UnixSocketRequireSameUser()))
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}
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