【containerd】(202407) 01.安装containerd

安装containerd

环境信息

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[root@ubuntu-22 ~]# uname -a
Linux ubuntu-22 6.5.0-41-generic #41~22.04.2-Ubuntu SMP PREEMPT_DYNAMIC Mon Jun  3 11:32:55 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

下载安装containerd

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[root@ubuntu-22 ~]# wget https://github.com/containerd/containerd/releases/download/v1.7.18/cri-containerd-cni-1.7.18-linux-amd64.tar.gz

[root@ubuntu-22 ~]# tar -xvf cri-containerd-cni-1.7.18-linux-amd64.tar.gz -C /
cri-containerd.DEPRECATED.txt
etc/
etc/systemd/
etc/systemd/system/
etc/systemd/system/containerd.service
etc/cni/
etc/cni/net.d/
etc/cni/net.d/10-containerd-net.conflist
etc/crictl.yaml
usr/
usr/local/
usr/local/sbin/
usr/local/sbin/runc
usr/local/bin/
usr/local/bin/containerd-shim
usr/local/bin/crictl
usr/local/bin/containerd-stress
usr/local/bin/critest
usr/local/bin/ctr
usr/local/bin/ctd-decoder
usr/local/bin/containerd-shim-runc-v2
usr/local/bin/containerd-shim-runc-v1
usr/local/bin/containerd
opt/
opt/cni/
opt/cni/bin/
opt/cni/bin/tuning
opt/cni/bin/firewall
opt/cni/bin/loopback
opt/cni/bin/macvlan
opt/cni/bin/ptp
opt/cni/bin/bridge
opt/cni/bin/static
opt/cni/bin/dhcp
opt/cni/bin/dummy
opt/cni/bin/sbr
opt/cni/bin/vrf
opt/cni/bin/host-local
opt/cni/bin/bandwidth
opt/cni/bin/vlan
opt/cni/bin/host-device
opt/cni/bin/portmap
opt/cni/bin/ipvlan
opt/containerd/
opt/containerd/cluster/
opt/containerd/cluster/version
opt/containerd/cluster/gce/
opt/containerd/cluster/gce/configure.sh
opt/containerd/cluster/gce/env
opt/containerd/cluster/gce/cloud-init/
opt/containerd/cluster/gce/cloud-init/master.yaml
opt/containerd/cluster/gce/cloud-init/node.yaml
opt/containerd/cluster/gce/cni.template


[root@ubuntu-22 ~]# mkdir -p /etc/containerd

[root@ubuntu-22 ~]# containerd config default > /etc/containerd/config.toml

[root@ubuntu-22 ~]# systemctl start containerd
[root@ubuntu-22 ~]# systemctl enable containerd
[root@ubuntu-22 ~]# systemctl status containerd
● containerd.service - containerd container runtime
     Loaded: loaded (/etc/systemd/system/containerd.service; enabled; vendor preset: enabled)
     Active: active (running) since Mon 2024-07-08 20:41:42 CST; 8s ago
       Docs: https://containerd.io
   Main PID: 36771 (containerd)
      Tasks: 8
     Memory: 9.2M
        CPU: 89ms
     CGroup: /system.slice/containerd.service
             └─36771 /usr/local/bin/containerd

7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.765403283+08:00" level=info msg="Start subscribing containerd event"
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.765841560+08:00" level=info msg="Start recovering state"
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.765436975+08:00" level=info msg=serving... address=/run/containerd/containerd.sock.ttrpc
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.766984892+08:00" level=info msg="Start event monitor"
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.767354311+08:00" level=info msg="Start snapshots syncer"
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.767367946+08:00" level=info msg="Start cni network conf syncer for default"
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.767378325+08:00" level=info msg="Start streaming server"
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.767648701+08:00" level=info msg=serving... address=/run/containerd/containerd.sock
7月 08 20:41:42 ubuntu-22 containerd[36771]: time="2024-07-08T20:41:42.767846800+08:00" level=info msg="containerd successfully booted in 0.046182s"
7月 08 20:41:42 ubuntu-22 systemd[1]: Started containerd container runtime.
[root@ubuntu-22 ~]# 
[root@ubuntu-22 ~]#

查看状态

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[root@ubuntu-22 ~]# ctr version
Client:
  Version:  v1.7.18
  Revision: ae71819c4f5e67bb4d5ae76a6b735f29cc25774e
  Go version: go1.21.11

Server:
  Version:  v1.7.18
  Revision: ae71819c4f5e67bb4d5ae76a6b735f29cc25774e
  UUID: 64bd2d8f-d225-40aa-82fd-874a0a06032b

查看默认配置

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[root@ubuntu-22 ~]# cat /etc/containerd/config.toml 
disabled_plugins = []
imports = []
oom_score = 0
plugin_dir = ""
required_plugins = []
root = "/var/lib/containerd"
state = "/run/containerd"
temp = ""
version = 2

[cgroup]
  path = ""

[debug]
  address = ""
  format = ""
  gid = 0
  level = ""
  uid = 0

[grpc]
  address = "/run/containerd/containerd.sock"
  gid = 0
  max_recv_message_size = 16777216
  max_send_message_size = 16777216
  tcp_address = ""
  tcp_tls_ca = ""
  tcp_tls_cert = ""
  tcp_tls_key = ""
  uid = 0

[metrics]
  address = ""
  grpc_histogram = false

[plugins]

  [plugins."io.containerd.gc.v1.scheduler"]
    deletion_threshold = 0
    mutation_threshold = 100
    pause_threshold = 0.02
    schedule_delay = "0s"
    startup_delay = "100ms"

  [plugins."io.containerd.grpc.v1.cri"]
    cdi_spec_dirs = ["/etc/cdi", "/var/run/cdi"]
    device_ownership_from_security_context = false
    disable_apparmor = false
    disable_cgroup = false
    disable_hugetlb_controller = true
    disable_proc_mount = false
    disable_tcp_service = true
    drain_exec_sync_io_timeout = "0s"
    enable_cdi = false
    enable_selinux = false
    enable_tls_streaming = false
    enable_unprivileged_icmp = false
    enable_unprivileged_ports = false
    ignore_deprecation_warnings = []
    ignore_image_defined_volumes = false
    image_pull_progress_timeout = "5m0s"
    image_pull_with_sync_fs = false
    max_concurrent_downloads = 3
    max_container_log_line_size = 16384
    netns_mounts_under_state_dir = false
    restrict_oom_score_adj = false
    sandbox_image = "registry.k8s.io/pause:3.8"
    selinux_category_range = 1024
    stats_collect_period = 10
    stream_idle_timeout = "4h0m0s"
    stream_server_address = "127.0.0.1"
    stream_server_port = "0"
    systemd_cgroup = false
    tolerate_missing_hugetlb_controller = true
    unset_seccomp_profile = ""

    [plugins."io.containerd.grpc.v1.cri".cni]
      bin_dir = "/opt/cni/bin"
      conf_dir = "/etc/cni/net.d"
      conf_template = ""
      ip_pref = ""
      max_conf_num = 1
      setup_serially = false

    [plugins."io.containerd.grpc.v1.cri".containerd]
      default_runtime_name = "runc"
      disable_snapshot_annotations = true
      discard_unpacked_layers = false
      ignore_blockio_not_enabled_errors = false
      ignore_rdt_not_enabled_errors = false
      no_pivot = false
      snapshotter = "overlayfs"

      [plugins."io.containerd.grpc.v1.cri".containerd.default_runtime]
        base_runtime_spec = ""
        cni_conf_dir = ""
        cni_max_conf_num = 0
        container_annotations = []
        pod_annotations = []
        privileged_without_host_devices = false
        privileged_without_host_devices_all_devices_allowed = false
        runtime_engine = ""
        runtime_path = ""
        runtime_root = ""
        runtime_type = ""
        sandbox_mode = ""
        snapshotter = ""

        [plugins."io.containerd.grpc.v1.cri".containerd.default_runtime.options]

      [plugins."io.containerd.grpc.v1.cri".containerd.runtimes]

        [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc]
          base_runtime_spec = ""
          cni_conf_dir = ""
          cni_max_conf_num = 0
          container_annotations = []
          pod_annotations = []
          privileged_without_host_devices = false
          privileged_without_host_devices_all_devices_allowed = false
          runtime_engine = ""
          runtime_path = ""
          runtime_root = ""
          runtime_type = "io.containerd.runc.v2"
          sandbox_mode = "podsandbox"
          snapshotter = ""

          [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
            BinaryName = ""
            CriuImagePath = ""
            CriuPath = ""
            CriuWorkPath = ""
            IoGid = 0
            IoUid = 0
            NoNewKeyring = false
            NoPivotRoot = false
            Root = ""
            ShimCgroup = ""
            SystemdCgroup = false

      [plugins."io.containerd.grpc.v1.cri".containerd.untrusted_workload_runtime]
        base_runtime_spec = ""
        cni_conf_dir = ""
        cni_max_conf_num = 0
        container_annotations = []
        pod_annotations = []
        privileged_without_host_devices = false
        privileged_without_host_devices_all_devices_allowed = false
        runtime_engine = ""
        runtime_path = ""
        runtime_root = ""
        runtime_type = ""
        sandbox_mode = ""
        snapshotter = ""

        [plugins."io.containerd.grpc.v1.cri".containerd.untrusted_workload_runtime.options]

    [plugins."io.containerd.grpc.v1.cri".image_decryption]
      key_model = "node"

    [plugins."io.containerd.grpc.v1.cri".registry]
      config_path = ""

      [plugins."io.containerd.grpc.v1.cri".registry.auths]

      [plugins."io.containerd.grpc.v1.cri".registry.configs]

      [plugins."io.containerd.grpc.v1.cri".registry.headers]

      [plugins."io.containerd.grpc.v1.cri".registry.mirrors]

    [plugins."io.containerd.grpc.v1.cri".x509_key_pair_streaming]
      tls_cert_file = ""
      tls_key_file = ""

  [plugins."io.containerd.internal.v1.opt"]
    path = "/opt/containerd"

  [plugins."io.containerd.internal.v1.restart"]
    interval = "10s"

  [plugins."io.containerd.internal.v1.tracing"]

  [plugins."io.containerd.metadata.v1.bolt"]
    content_sharing_policy = "shared"

  [plugins."io.containerd.monitor.v1.cgroups"]
    no_prometheus = false

  [plugins."io.containerd.nri.v1.nri"]
    disable = true
    disable_connections = false
    plugin_config_path = "/etc/nri/conf.d"
    plugin_path = "/opt/nri/plugins"
    plugin_registration_timeout = "5s"
    plugin_request_timeout = "2s"
    socket_path = "/var/run/nri/nri.sock"

  [plugins."io.containerd.runtime.v1.linux"]
    no_shim = false
    runtime = "runc"
    runtime_root = ""
    shim = "containerd-shim"
    shim_debug = false

  [plugins."io.containerd.runtime.v2.task"]
    platforms = ["linux/amd64"]
    sched_core = false

  [plugins."io.containerd.service.v1.diff-service"]
    default = ["walking"]

  [plugins."io.containerd.service.v1.tasks-service"]
    blockio_config_file = ""
    rdt_config_file = ""

  [plugins."io.containerd.snapshotter.v1.aufs"]
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.blockfile"]
    fs_type = ""
    mount_options = []
    root_path = ""
    scratch_file = ""

  [plugins."io.containerd.snapshotter.v1.btrfs"]
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.devmapper"]
    async_remove = false
    base_image_size = ""
    discard_blocks = false
    fs_options = ""
    fs_type = ""
    pool_name = ""
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.native"]
    root_path = ""

  [plugins."io.containerd.snapshotter.v1.overlayfs"]
    mount_options = []
    root_path = ""
    sync_remove = false
    upperdir_label = false

  [plugins."io.containerd.snapshotter.v1.zfs"]
    root_path = ""

  [plugins."io.containerd.tracing.processor.v1.otlp"]

  [plugins."io.containerd.transfer.v1.local"]
    config_path = ""
    max_concurrent_downloads = 3
    max_concurrent_uploaded_layers = 3

    [[plugins."io.containerd.transfer.v1.local".unpack_config]]
      differ = ""
      platform = "linux/amd64"
      snapshotter = "overlayfs"

[proxy_plugins]

[stream_processors]

  [stream_processors."io.containerd.ocicrypt.decoder.v1.tar"]
    accepts = ["application/vnd.oci.image.layer.v1.tar+encrypted"]
    args = ["--decryption-keys-path", "/etc/containerd/ocicrypt/keys"]
    env = ["OCICRYPT_KEYPROVIDER_CONFIG=/etc/containerd/ocicrypt/ocicrypt_keyprovider.conf"]
    path = "ctd-decoder"
    returns = "application/vnd.oci.image.layer.v1.tar"

  [stream_processors."io.containerd.ocicrypt.decoder.v1.tar.gzip"]
    accepts = ["application/vnd.oci.image.layer.v1.tar+gzip+encrypted"]
    args = ["--decryption-keys-path", "/etc/containerd/ocicrypt/keys"]
    env = ["OCICRYPT_KEYPROVIDER_CONFIG=/etc/containerd/ocicrypt/ocicrypt_keyprovider.conf"]
    path = "ctd-decoder"
    returns = "application/vnd.oci.image.layer.v1.tar+gzip"

[timeouts]
  "io.containerd.timeout.bolt.open" = "0s"
  "io.containerd.timeout.metrics.shimstats" = "2s"
  "io.containerd.timeout.shim.cleanup" = "5s"
  "io.containerd.timeout.shim.load" = "5s"
  "io.containerd.timeout.shim.shutdown" = "3s"
  "io.containerd.timeout.task.state" = "2s"

[ttrpc]
  address = ""
  gid = 0
  uid = 0

查看service文件

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[root@ubuntu-22 ~]# cat /etc/systemd/system/containerd.service
# Copyright The containerd Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

[Unit]
Description=containerd container runtime
Documentation=https://containerd.io
After=network.target local-fs.target

[Service]
#uncomment to enable the experimental sbservice (sandboxed) version of containerd/cri integration
#Environment="ENABLE_CRI_SANDBOXES=sandboxed"
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd

Type=notify
Delegate=yes
KillMode=process
Restart=always
RestartSec=5
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNPROC=infinity
LimitCORE=infinity
LimitNOFILE=infinity
# Comment TasksMax if your systemd version does not supports it.
# Only systemd 226 and above support this version.
TasksMax=infinity
OOMScoreAdjust=-999

[Install]
WantedBy=multi-user.target

注意以下两点：
1）Delegate：该选项是为了允许containerd以及运行时管理自己创建容器的cgroups。
如果该值为no，则systemd就会将进程移到自己的cgroups中，从而导致containerd无法正确管理容器的cgroups以及正常获取容器的资源使用情况。
2）KillMode：该值用来设置systemd单元进程（即containerd进程）被杀死的方式，默认值是control-group，默认情况下systemd会在进程的cgroup中查找并杀死containerd的所有子进程。
KillMode字段可以设置的值如下：

  • control-group（默认值）：当前控制组里面的所有子进程都会被杀掉。
  • process：只杀主进程；
  • mixed：主进程将收到SIGTERM信号，子进程收到SIGKILL信号。
  • none：没有进程被杀掉，只是执行服务的stop命令。
    containerd将KillMode的值设置为process，这样可以确保升级或重启containerd时不杀死现有的容器。
【containerd】(202407) 01.安装containerd
http://example.com/2024/07/29/containerd/【containerd】(202407) 01.安装containerd/
作者
ningan123
发布于
2024年7月29日
许可协议