Containerd的两种安装方式-阿里云开发者社区

操作系统环境为centos7u6

1. YUM方式安装

1.1 获取YUM源

获取阿里云YUM源
# wget -O /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

查看YUM源中Containerd软件
# yum list | grep containerd
containerd.io.x86_64                        1.4.12-3.1.el7             docker-ce-stable

1.2 使用yum命令安装

安装Containerd.io软件，即可安装Containerd
# yum -y install containerd.io

1.3 验证安装及启动服务

使用rpm -qa命令查看是否安装
# rpm -qa | grep containerd
containerd.io-1.4.12-3.1.el7.x86_64

设置containerd服务启动及开机自启动
# systemctl enable containerd
# systemctl start containerd

查看containerd服务启动状态
# systemctl status containerd
● containerd.service - containerd container runtime
   Loaded: loaded (/usr/lib/systemd/system/containerd.service; enabled; vendor preset: disabled)
   Active: active (running) since 六 2023-08-05 19:25:57 CST; 46s ago
     Docs: https://containerd.io
  Process: 13319 ExecStartPre=/sbin/modprobe overlay (code=exited, status=0/SUCCESS)
 Main PID: 13323 (containerd)
    Tasks: 10
   Memory: 20.4M
   CGroup: /system.slice/containerd.service
           └─13323 /usr/bin/containerd
           ......

1.4 验证可用性

安装Containerd时ctr命令亦可使用，ctr命令主要用于管理容器及容器镜像等。
使用ctr命令查看Containerd客户端及服务端相关信息。
# ctr version
Client:
  Version:  1.6.22
  Revision: 8165feabfdfe38c65b599c4993d227328c231fca
  Go version: go1.19.11
Server:
  Version:  1.6.22
  Revision: 8165feabfdfe38c65b599c4993d227328c231fca
  UUID: a588fcfe-122c-4b3a-a25a-95eadd30d3a7

2. 二进制方式安装

Containerd有两种安装包：

第一种是containerd-xxx,这种包用于单机测试没问题，不包含runC，需要提前安装。
第二种是cri-containerd-cni-xxxx，包含runc和k8s里的所需要的相关文件。k8s集群里需要用到此包。虽然包含runC，但是依赖系统中的seccomp（安全计算模式，是一种限制容器调用系统资源的模式。）

2.1 获取安装包

下载Containerd安装包
# wget https://github.com/containerd/containerd/releases/download/v1.6.0/cri-containerd-cni-1.6.0-linux-amd64.tar.gz

2.2 安装并测试可用性

2.2.1 安装containerd

查看已获取的安装包
# ls
cri-containerd-cni-1.6.0-linux-amd64.tar.gz

解压已下载的软件包
# tar xf cri-containerd-cni-1.6.0-linux-amd64.tar.gz

查看解压后目录
# ls
etc opt  usr

查看etc目录，主要为containerd服务管理配置文件及cni虚拟网卡配置文件
# ls etc
cni  crictl.yaml  systemd
# ls etc/systemd/
system
# ls etc/systemd/system/
containerd.service
查看opt目录，主要为gce环境中使用containerd配置文件及cni插件
# ls opt
cni  containerd
# ls opt/containerd/
cluster
# ls opt/containerd/cluster/
gce  version
# ls opt/containerd/cluster/gce
cloud-init  cni.template  configure.sh  env
查看usr目录，主要为containerd运行时文件，包含runc
# ls usr
local
# ls usr/local/
bin  sbin
# ls usr/local/bin
containerd  containerd-shim  containerd-shim-runc-v1  containerd-shim-runc-v2  containerd-stress  crictl  critest  ctd-decoder  ctr
# ls usr/local/sbin
runc

2.2.2 查看containerd安装位置

查看containerd.service文件，了解containerd文件安装位置
# 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]
ExecStartPre=-/sbin/modprobe overlay
ExecStart=/usr/local/bin/containerd #查看此位置,把containerd二进制文件放置于此处即可完成安装。
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

2.2.3 复制containerd运行时文件至系统

查看宿主机/usr/local/bin目录，里面没有任何内容。
# ls /usr/local/bin/
查看解压后usr/local/bin目录，里面包含containerd运行时文件
# ls usr/
local
# ls usr/local/
bin  sbin
# ls usr/local/bin/
containerd  containerd-shim  containerd-shim-runc-v1  containerd-shim-runc-v2  containerd-stress  crictl  critest  ctd-decoder  ctr
复制containerd文件至/usr/local/bin目录中，本次可仅复制containerd一个文件也可复制全部文件。
# cp usr/local/bin/containerd /usr/local/bin/
# ls /usr/local/bin/
containerd

2.2.4 添加containerd.service文件至系统

查看解压后的etc/system目录
# ls etc
cni  crictl.yaml  systemd
# ls etc/systemd/
system
# ls etc/systemd/system/
containerd.service
复制containerd服务管理配置文件至/usr/lib/systemd/system/目录中
# cp etc/systemd/system/containerd.service /usr/lib/systemd/system/containerd.service
查看复制后结果
# ls /usr/lib/systemd/system/containerd.service
/usr/lib/systemd/system/containerd.service

2.2.5 查看containerd使用帮助

# containerd --help
NAME:
   containerd -
                    __        _                     __
  _________  ____  / /_____ _(_)___  ___  _________/ /
 / ___/ __ \/ __ \/ __/ __ `/ / __ \/ _ \/ ___/ __  /
/ /__/ /_/ / / / / /_/ /_/ / / / / /  __/ /  / /_/ /
\___/\____/_/ /_/\__/\__,_/_/_/ /_/\___/_/   \__,_/
......

2.2.6 生成containerd模块配置文件

2.2.6.1 生成默认模块配置文件

Containerd 的默认配置文件为 /etc/containerd/config.toml，可以使用containerd config default > /etc/containerd/config.toml命令创建一份模块配置文件

创建配置文件目录
# mkdir /etc/containerd

生成配置文件
# containerd config default > /etc/containerd/config.toml

查看配置文件
# cat /etc/containerd/config.toml

2.2.6.2 替换默认配置文件

但上述配置文件后期改动的地方较多，这里直接换成可单机使用也可k8s环境使用的配置文件并配置好镜像加速器（可参考配置）。

# vim /etc/containerd/config.toml
# cat /etc/containerd/config.toml
root = "/var/lib/containerd"
state = "/run/containerd"
oom_score = -999
[grpc]
  address = "/run/containerd/containerd.sock"
  uid = 0
  gid = 0
  max_recv_message_size = 16777216
  max_send_message_size = 16777216
[debug]
  address = ""
  uid = 0
  gid = 0
  level = ""
[metrics]
  address = ""
  grpc_histogram = false
[cgroup]
  path = ""
[plugins]
  [plugins.cgroups]
    no_prometheus = false
  [plugins.cri]
    stream_server_address = "127.0.0.1"
    stream_server_port = "0"
    enable_selinux = false
    sandbox_image = "easzlab/pause-amd64:3.2" #配置了沙箱镜像
    stats_collect_period = 10
    systemd_cgroup = false
    enable_tls_streaming = false
    max_container_log_line_size = 16384
    [plugins.cri.containerd]
      snapshotter = "overlayfs"
      no_pivot = false
      [plugins.cri.containerd.default_runtime]
        runtime_type = "io.containerd.runtime.v1.linux"
        runtime_engine = ""
        runtime_root = ""
      [plugins.cri.containerd.untrusted_workload_runtime]
        runtime_type = ""
        runtime_engine = ""
        runtime_root = ""
    [plugins.cri.cni]
      bin_dir = "/opt/kube/bin"
      conf_dir = "/etc/cni/net.d"
      conf_template = "/etc/cni/net.d/10-default.conf"
    [plugins.cri.registry]
      [plugins.cri.registry.mirrors]
        [plugins.cri.registry.mirrors."docker.io"]
          endpoint = [
            "https://docker.mirrors.ustc.edu.cn",
            "http://hub-mirror.c.163.com"
          ]
        [plugins.cri.registry.mirrors."gcr.io"]
          endpoint = [
            "https://gcr.mirrors.ustc.edu.cn"
          ]
        [plugins.cri.registry.mirrors."k8s.gcr.io"]
          endpoint = [
            "https://gcr.mirrors.ustc.edu.cn/google-containers/"
          ]
        [plugins.cri.registry.mirrors."quay.io"]
          endpoint = [
            "https://quay.mirrors.ustc.edu.cn"
          ]
        [plugins.cri.registry.mirrors."harbor.kubemsb.com"] #此处添加了本地容器镜像仓库 Harbor,做为本地容器镜像仓库。
          endpoint = [
            "http://harbor.kubemsb.com"
          ]
    [plugins.cri.x509_key_pair_streaming]
      tls_cert_file = ""
      tls_key_file = ""
  [plugins.diff-service]
    default = ["walking"]
  [plugins.linux]
    shim = "containerd-shim"
    runtime = "runc"
    runtime_root = ""
    no_shim = false
    shim_debug = false
  [plugins.opt]
    path = "/opt/containerd"
  [plugins.restart]
    interval = "10s"
  [plugins.scheduler]
    pause_threshold = 0.02
    deletion_threshold = 0
    mutation_threshold = 100
    schedule_delay = "0s"
    startup_delay = "100ms"

2.2.7 启动containerd服务并设置开机自启动

# systemctl enable containerd
Created symlink from /etc/systemd/system/multi-user.target.wants/containerd.service to /usr/lib/systemd/system/containerd.service.
# systemctl start containerd

# systemctl status containerd
● containerd.service - containerd container runtime
   Loaded: loaded (/usr/lib/systemd/system/containerd.service; enabled; vendor preset: disabled)
   Active: active (running) since 日 2023-08-06 14:11:12 CST; 5s ago
     Docs: https://containerd.io
  Process: 20523 ExecStartPre=/sbin/modprobe overlay (code=exited, status=0/SUCCESS)
 Main PID: 20525 (containerd)
    Tasks: 13
   Memory: 26.1M
   CGroup: /system.slice/containerd.service
           └─20525 /usr/local/bin/containerd
           ......

2.2.8 复制ctr命令至系统

# ls usr/local/bin/
containerd  containerd-shim  containerd-shim-runc-v1  containerd-shim-runc-v2  containerd-stress  crictl  critest  ctd-decoder  ctr
# cp usr/local/bin/ctr /usr/bin/

2.2.9 查看已安装containerd服务版本

# ctr version
Client:
  Version:  v1.6.0
  Revision: 39259a8f35919a0d02c9ecc2871ddd6ccf6a7c6e
  Go version: go1.17.2
Server:
  Version:  v1.6.0
  Revision: 39259a8f35919a0d02c9ecc2871ddd6ccf6a7c6e
  UUID: c1972cbe-884a-41b0-867f-f8a58c168e6d

2.2.10 安装runC

由于二进制包中提供的runC默认需要系统中安装seccomp支持，需要单独安装，且不同版本runC对seccomp版本要求一致，所以建议单独下载runC 二进制包进行安装，里面包含了seccomp模块支持。

2.2.10.1 获取runC

使用wget下载
# wget https://github.com/opencontainers/runc/releases/download/v1.1.0/runc.amd64

2.2.10.2 安装runC并验证安装结果

查看已下载文件 
# ls
runc.amd64

安装runC
# mv runc.amd64 /usr/sbin/runc

为runC添加可执行权限
# chmod +x /usr/sbin/runc

使用runc命令验证是否安装成功
# runc -v
runc version 1.1.0
commit: v1.1.0-0-g067aaf85
spec: 1.0.2-dev
go: go1.17.6
libseccomp: 2.5.3

Containerd的两种安装方式

1. YUM方式安装

1.1 获取YUM源

1.2 使用yum命令安装

1.3 验证安装及启动服务

1.4 验证可用性

2. 二进制方式安装

2.1 获取安装包

2.2 安装并测试可用性

2.2.1 安装containerd

2.2.2 查看containerd安装位置

2.2.3 复制containerd运行时文件至系统

2.2.4 添加containerd.service文件至系统

2.2.5 查看containerd使用帮助

2.2.6 生成containerd模块配置文件

2.2.6.1 生成默认模块配置文件

2.2.6.2 替换默认配置文件

2.2.7 启动containerd服务并设置开机自启动

2.2.8 复制ctr命令至系统

2.2.9 查看已安装containerd服务版本

2.2.10 安装runC

2.2.10.1 获取runC

2.2.10.2 安装runC并验证安装结果

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Containerd的两种安装方式

1. YUM方式安装

1.1 获取YUM源

1.2 使用yum命令安装

1.3 验证安装及启动服务

1.4 验证可用性

2. 二进制方式安装

2.1 获取安装包

2.2 安装并测试可用性

2.2.1 安装containerd

2.2.2 查看containerd安装位置

2.2.3 复制containerd运行时文件至系统

2.2.4 添加containerd.service文件至系统

2.2.5 查看containerd使用帮助

2.2.6 生成containerd模块配置文件

2.2.6.1 生成默认模块配置文件

2.2.6.2 替换默认配置文件

2.2.7 启动containerd服务并设置开机自启动

2.2.8 复制ctr命令至系统

2.2.9 查看已安装containerd服务版本

2.2.10 安装runC

2.2.10.1 获取runC

2.2.10.2 安装runC并验证安装结果

热门文章

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