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This article mainly introduces "how to compile containerd". In daily operation, I believe many people have doubts about how to compile containerd. The editor consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to compile containerd". Next, please follow the editor to study!

Compile containerd/runc

Any public cloud vendor buys a virtual machine and binds fip (116.196.115.229)

Log in to vm to install go and set the GOROOT/GOPATH environment variable

[root@containerd bin] # wget https://dl.google.com/go/go1.12.5.linux-amd64.tar.gz

[root@containerd bin] # tar-xvf go1.12.5.linux-amd64.tar.gz-C / usr/local

[root@containerd bin] # / usr/local/go/bin/go version

Go version go1.12.5 linux/amd64

Edit the / root/.bash_profile file and sourcePATH=$PATH:/usr/local/go/bin after adding the following settings

Export PATH

Export GOROOT=/usr/local/go/

Export GOPATH=/root/go [root@containerd ~] # source .bash _ profile

Build the development environment

[root@containerd ~] # go get github.com/containerd/containerd

[root@containerd ~] # wget-c https://github.com/google/protobuf/releases/download/v3.5.0/protoc-3.5.0-linux-x86_64.zip

[root@containerd] # unzip protoc-3.5.0-linux-x86_64.zip-d / usr/local

[root@containerd ~] # yum install-y btrfs-progs-devel libseccomp-devel

Compile runc

[root@containerd ~] # go get github.com/opencontainers/runc [root@containerd containerd] # cd $GOPATH/src/github.com/opencontainers/runc

[root@containerd runc] # make

Go build-buildmode=pie-ldflags "- X main.gitCommit=" eb4aeed24ffbf8e2d740fafea39d91faa0ee84d0 ">

[root@containerd runc] # make install

Install-D-m0755 runc / usr/local/sbin/runc

[root@containerd runc] # ls-rtl / usr/local/sbin

Total 11752

-rwxr-xr-x 1 root root 12031832 May 10 17:33 runc

[root@containerd runc] # runc-- version

Runc version 1.0.0-rc8+dev

Commit: eb4aeed24ffbf8e2d740fafea39d91faa0ee84d0

Spec: 1.0.1-dev

Compile containerd

[root@containerd runc] # cd $GOPATH/src/github.com/containerd/containerd

[root@containerd containerd] # make

+ bin/ctr

+ bin/containerd

+ bin/containerd-stress

+ bin/containerd-shim

+ bin/containerd-shim-runc-v1

+ bin/containerd-shim-runc-v2

+ binaries

[root@containerd containerd] # make install

+ install bin/ctr bin/containerd bin/containerd-stress bin/containerd-shim bin/containerd-shim-runc-v1 bin/containerd-shim-runc-v2

[root@containerd containerd] # ls-rtl / usr/local/bin

Total 133152

-rwxr-x--- 1 root root 4433736 Nov 14 2017 protoc

-rwxr-xr-x 1 root root 29709728 May 10 17:35 ctr

-rwxr-xr-x 1 root root 51831136 May 10 17:35 containerd

-rwxr-xr-x 1 root root 25094688 May 10 17:35 containerd-stress

-rwxr-xr-x 1 root root 7302016 May 10 17:35 containerd-shim

-rwxr-xr-x 1 root root 8980256 May 10 17:35 containerd-shim-runc-v1

-rwxr-xr-x 1 root root 8980320 May 10 17:35 containerd-shim-runc-v2

[root@containerd containerd] # containerd-- version

Containerd github.com/containerd/containerd v1.2.0-551-g57fbb16 57fbb16234fa6c8a61e5e907a4148ea3b05bce1d

Containerd runs in daemon mode

Prepare the containered.service file

[root@containerd ~] # cat / usr/lib/systemd/system/containerd.service

[Unit]

Description=containerd container runtime

Documentation= https://containerd.io

After=network.target

[Service]

ExecStartPre=-/sbin/modprobe overlay

ExecStart=/usr/local/bin/containerd

Delegate=yes

KillMode=process

# 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=1048576

# Comment TasksMax if your systemd version does not supports it.

# Only systemd 226 and above support this version.

TasksMax=infinity

[Install]

WantedBy=multi-user.target

Enable setting Boot self-start

[root@containerd system] # systemctl enable containerd.service

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

Prepare the containerd profile

[root@containerd ~] # cat / etc/containerd/config.toml

Subreaper = true

Oom_score =-999

[debug]

Level = "debug"

[metrics]

Address = "127.0.0.1purl 1338"

[plugins.linux]

Runtime = "runc"

Shim_debug = true

Start the containerd service

[root@containerd system] # systemctl start containerd.service

[root@containerd system] # systemctl status containerd.service

● containerd.service-containerd container runtime

Loaded: loaded (/ usr/lib/systemd/system/containerd.service; enabled; vendor preset: disabled)

Active: active (running) since Fri 2019-05-10 17:55:35 CST; 4s ago

Docs: https://containerd.io

Process: 18319 ExecStartPre=/sbin/modprobe overlay (code=exited, status=0/SUCCESS)

Main PID: 18321 (containerd)

Tasks: 13

Memory: 25.1M

CGroup: / system.slice/containerd.service

└─ 18321 / usr/local/bin/containerd

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396003271+08:00" level=error msg= "Failed to load cni during init, please check CRI plugin status before... cni config"

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396193437+08:00" level=info msg= "loading plugin\" io.containerd.grpc.v1.introspection\ "..." Type=io.containerd.grpc.v1

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396280636+08:00" level=info msg= "Start subscribing containerd event"

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396365663+08:00" level=info msg= "Start recovering state"

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396383092+08:00" level=info msg=serving... Address=/run/containerd/containerd.sock.ttrpc

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396415058+08:00" level=info msg=serving... Address=/run/containerd/containerd.sock

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396427216+08:00" level=info msg= "containerd successfully booted in 0.003786s"

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396435091+08:00" level=info msg= "Start event monitor"

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396459564+08:00" level=info msg= "Start snapshots syncer"

May 10 17:55:35 containerd containerd [18321]: time= "2019-05-10T17:55:35.396468105+08:00" level=info msg= "Start streaming server"

Hint: Some lines were ellipsized, use-l to show in full.

Prepare rootfs and spec

Find another machine with the full set of docker installed (local oracle linux vm 10.12.162.67 here) and make the rootfs (bundle) file for the test.

Create a busybox/rootfs directory

[root@localhost] # mkdir-p busybox/rootfs

Pull busybox image

[root@localhost ~] # docker pull busybox

Using default tag: latest

Latest: Pulling from library/busybox

53071b97a884: Pull complete

Digest: sha256:32f65f5aae307c171fc69ce52be3c8b09675164a610a88efa607449311186378

Status: Downloaded newer image for busybox:latest

Create docker

[root@localhost] # docker create-- name tempbusybox busybox

85b6e32db75da001669656b452a9a65fc2de7f1a9faac95c5aedf6de1127fa15

Export rootfs and spec

[root@localhost ~] # docker export tempbusybox | tar-C busybox/rootfs-xf-

[root@localhost] # cd busybox/ & & / usr/bin/docker-runc spec

[root@localhost busybox] # ls

Config.json rootfs

[root@localhost busybox] # ls rootfs/

Bin dev etc home proc root sys tmp usr var

Copy rootfs and spec to containered test node 116.196.115.229

[root@localhost] # scp-r busybox/ root@116.196.115.229:/root

test

[root@containerd busybox] # cd / root/busybox

Use containerd cli (/ usr/local/bin/ctr) to run the container

[root@containerd busybox] # ctr run-t-d-rootfs rootfs busybox / bin/sh

[root@containerd busybox] # ctr container list

CONTAINER IMAGE RUNTIME

Busybox-io.containerd.runtime.v1.linux

[root@containerd busybox] # ps-ef | grep container

Root 9539 1 0 21:22? 00:00:03 / usr/local/bin/containerd

Root 15285 9539 0 22:02? 00:00:00 containerd-shim-namespace default-workdir / var/lib/containerd/io.containerd.runtime.v1.linux/default/busybox-address / run/containerd/containerd.sock-containerd-binary / usr/local/bin/containerd-debug

Login Container Verification

[root@containerd busybox] # ctr tasks list

TASK PID STATUS

Busybox 15301 RUNNING

[root@containerd busybox] # ctr tasks exec- t-- exec-id 15301 busybox / bin/sh

/ # hostname

Containerd

/ # ip a

1: lo: mtu 65536 qdisc noqueue qlen 1

Link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

Inet 127.0.0.1/8 scope host lo

Valid_lft forever preferred_lft forever

Inet6:: 1/128 scope host

Valid_lft forever preferred_lft forever

Stop container

[root@containerd busybox] # ctr tasks kill-- signal 9 busybox

[root@containerd busybox] # ctr tasks list

TASK PID STATUS

Busybox 15301 STOPPED

Delete Container

[root@containerd busybox] # ctr container delete busybox

[root@containerd busybox] # ctr container list

CONTAINER IMAGE RUNTIME

At this point, the study of "how to compile containerd" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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