一、安装 buildkit 客户端

buildkit 可执行文件: 下载地址
解压：
tar -zxvf buildkit-v0.10.6.linux-amd64.tar.gz
复制到 /usr/bin

cp build/buildctl /usr/bin/

二、验证安装

buildkit -version

• 可以看到已经安装成功了

三、安装buildkitd 服务

1. 复制buildkitd到 /usr/bin

cp build/builkitd /usr/bin/

2. 配置 systemd 服务
   创建 /usr/lib/systemd/system/buildkitd.service 文件：

cat > /usr/lib/systemd/system/buildkitd.service <<EOF
[Unit]
Description=/usr/bin/buildkitd
ConditionPathExists=/usr/bin/buildkitd
After=containerd.service

[Service]
Type=simple
ExecStart=/usr/bin/buildkitd
User=root
Restart=on-failure
RestartSec=1500ms

[Install]
WantedBy=multi-user.target
EOF

3. 开机自启动

systemctl daemon-reload && systemctl restart buildkitd && systemctl enable buildkitd

验证运行状态

systemctl status buildkitd

四、构建镜像

未运行 buildkitd 之前：会报下面的错误：

[root@k8s0 cbbpa-server-utils]# nerdctl build -t test/testimage:0.0.1 .
ERRO[0000] `buildctl` needs to be installed and `buildkitd` needs to be running, see https://github.com/moby/buildkit  error="2 errors occurred:\n\t* failed to ping to host unix:///run/buildkit-default/buildkitd.sock: exit status 1\n\t* failed to ping to host unix:///run/buildkit/buildkitd.sock: exit status 1\n\n"
FATA[0000] no buildkit host is available, tried 2 candidates: 2 errors occurred:
        * failed to ping to host unix:///run/buildkit-default/buildkitd.sock: exit status 1
        * failed to ping to host unix:///run/buildkit/buildkitd.sock: exit status 1

运行 buildkitd 执行：就跑通了：

[root@k8s0 cbbpa-server-utils]# systemctl start buildkitd
[root@k8s0 cbbpa-server-utils]# nerdctl build -t test/testimage:0.0.1 .
[+] Building 3.6s (9/9) FINISHED                                                                                                                                 
 => [internal] load .dockerignore                                                                                                                           0.0s
 => => transferring context: 2B                                                                                                                             0.0s
 => [internal] load build definition from Dockerfile                                                                                                        0.0s
 => => transferring dockerfile: 256B                                                                                                                        0.0s
 => [internal] load metadata for docker.io/library/busybox:latest                                                                                           3.0s
 => [1/4] FROM docker.io/library/busybox@sha256:fcd85228d7a25feb59f101ac3a955d27c80df4ad824d65f5757a954831450185                                            0.0s
 => => resolve docker.io/library/busybox@sha256:fcd85228d7a25feb59f101ac3a955d27c80df4ad824d65f5757a954831450185                                            0.0s
 => [internal] load build context                                                                                                                           0.0s
 => => transferring context: 106B                                                                                                                           0.0s
 => CACHED [2/4] WORKDIR /root                                                                                                                              0.0s
 => CACHED [3/4] ADD cbbpa_server_utils.bin /root                                                                                                           0.0s
 => CACHED [4/4] RUN chmod -R 777 .                                                                                                                         0.0s
 => exporting to oci image format                                                                                                                           0.5s
 => => exporting layers                                                                                                                                     0.0s
 => => exporting manifest sha256:e2cc5478d2911b1ac660886ee53950997f89d05b3c5ffc6ca63653e0b64e0a58                                                           0.0s
 => => exporting config sha256:3585a98666945a396c21d259885b61a922ff46d8db5b33dc111b7a0701d26744                                                             0.0s
 => => sending tarball                                                                                                                                      0.4s
unpacking docker.io/test/testimage:0.0.1 (sha256:e2cc5478d2911b1ac660886ee53950997f89d05b3c5ffc6ca63653e0b64e0a58)...
Loaded image: docker.io/test/testimage:0.0.1[root@k8s0 cbbpa-server-utils]# date
Mon Nov 21 10:26:59 CST 2022

镜像构建成功