a2d1a8a865
This change is needed for running the latest containerd inside Docker that is not aware of the recently added caps (BPF, PERFMON, CHECKPOINT_RESTORE). Without this change, containerd inside Docker fails to run containers with "apply caps: operation not permitted" error. See kubernetes-sigs/kind 2058 NOTE: The caller process of this function is now assumed to be as privileged as possible. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
79 lines
2.5 KiB
Go
79 lines
2.5 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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"github.com/containerd/containerd/pkg/cap"
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"github.com/containerd/containerd/sys"
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cni "github.com/containerd/go-cni"
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"github.com/opencontainers/selinux/go-selinux"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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// networkAttachCount is the minimum number of networks the PodSandbox
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// attaches to
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const networkAttachCount = 2
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// initPlatform handles linux specific initialization for the CRI service.
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func (c *criService) initPlatform() error {
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var err error
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if sys.RunningInUserNS() {
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if !(c.config.DisableCgroup && !c.apparmorEnabled() && c.config.RestrictOOMScoreAdj) {
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logrus.Warn("Running containerd in a user namespace typically requires disable_cgroup, disable_apparmor, restrict_oom_score_adj set to be true")
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}
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}
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if c.config.EnableSelinux {
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if !selinux.GetEnabled() {
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logrus.Warn("Selinux is not supported")
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}
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if r := c.config.SelinuxCategoryRange; r > 0 {
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selinux.CategoryRange = uint32(r)
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}
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} else {
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selinux.SetDisabled()
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}
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// Pod needs to attach to at least loopback network and a non host network,
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// hence networkAttachCount is 2. If there are more network configs the
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// pod will be attached to all the networks but we will only use the ip
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// of the default network interface as the pod IP.
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c.netPlugin, err = cni.New(cni.WithMinNetworkCount(networkAttachCount),
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cni.WithPluginConfDir(c.config.NetworkPluginConfDir),
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cni.WithPluginMaxConfNum(c.config.NetworkPluginMaxConfNum),
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cni.WithPluginDir([]string{c.config.NetworkPluginBinDir}))
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if err != nil {
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return errors.Wrap(err, "failed to initialize cni")
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}
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if c.allCaps == nil {
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c.allCaps, err = cap.Current()
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if err != nil {
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return errors.Wrap(err, "failed to get caps")
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}
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}
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return nil
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}
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// cniLoadOptions returns cni load options for the linux.
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func (c *criService) cniLoadOptions() []cni.CNIOpt {
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return []cni.CNIOpt{cni.WithLoNetwork, cni.WithDefaultConf}
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}
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