75 lines
2.5 KiB
Go
75 lines
2.5 KiB
Go
// +build !windows
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/*
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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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cni "github.com/containerd/go-cni"
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runcsystem "github.com/opencontainers/runc/libcontainer/system"
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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 runcsystem.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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} 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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// Try to load the config if it exists. Just log the error if load fails
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// This is not disruptive for containerd to panic
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if err := c.netPlugin.Load(c.cniLoadOptions()...); err != nil {
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logrus.WithError(err).Error("Failed to load cni during init, please check CRI plugin status before setting up network for pods")
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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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