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使用 dfdaemon 支持 Containerd

从 v1.1.0 开始，Containerd 支持镜像仓库。

快速开始

步骤 1: 配置 dfdaemon

下面为镜像仓库的 dfdaemon 配置，在路径 /etc/dragonfly/dfget.yaml:

proxy:
  security:
    insecure: true
  tcpListen:
    listen: 0.0.0.0
    port: 65001
  registryMirror:
    # multiple registries support, if only mirror single registry, disable this
    dynamic: true
    url: https://index.docker.io
  proxies:
    - regx: blobs/sha256.*

运行 dfdaemon

dfget daemon

步骤 2: 配置 Containerd

选项 1: 单镜像仓库

启动 Containerd 镜像仓库配置 /etc/containerd/config.toml:

# explicitly use v2 config format, if already v2, skip the "version = 2"
version = 2

[plugins."io.containerd.grpc.v1.cri".registry.mirrors."docker.io"]
  endpoint = ["http://127.0.0.1:65001","https://registry-1.docker.io"]

配置支持两个镜像仓库地址 http://127.0.0.1:65001 以及 https://registry-1.docker.io.

详细 Containerd 配置文档参照: https://github.com/containerd/containerd/blob/v1.5.2/docs/cri/registry.md#configure-registry-endpoint 镜像仓库配置参照文档: https://github.com/containerd/containerd/blob/v1.5.2/docs/cri/config.md#registry-configuration

选项 2: 多镜像仓库

1.5.0 以上版本 Containerd 支持多镜像仓库。

1. 开启 Contianerd 配置

启动 Containerd 镜像仓库配置 /etc/containerd/config.toml:

# explicitly use v2 config format, if already v2, skip the "version = 2"
version = 2

[plugins."io.containerd.grpc.v1.cri".registry]
  config_path = "/etc/containerd/certs.d"

2. 生成每个仓库的 hosts.toml

选项 1: 手动生成 hosts.toml

路径: /etc/containerd/certs.d/example.com/hosts.toml

根据不同的仓库替换 example.com。

server = "https://example.com"

[host."http://127.0.0.1:65001"]
  capabilities = ["pull", "resolve"]
  [host."http://127.0.0.1:65001".header]
    X-Dragonfly-Registry = ["https://example.com"]

选项 2: 自动生成 hosts.toml

自动生成 hosts.toml 脚本为 https://github.com/dragonflyoss/Dragonfly2/blob/main/hack/gen-containerd-hosts.sh

bash gen-containerd-hosts.sh example.com

镜像仓库配置详细文档参照: https://github.com/containerd/containerd/blob/main/docs/hosts.md#registry-configuration---examples

Step 3: 重启 Containerd

systemctl restart containerd

Step 4: 拉取镜像

使用以下命令拉取镜像:

crictl pull docker.io/library/busybox

Step 5: 验证 Dragonfly 拉取成功

可以查看日志，判断 busybox 镜像正常拉取。

grep 'register peer task result' /var/log/dragonfly/daemon/*.log

如果正常日志输出如下:

{
    "level": "info",
    "ts": "2021-02-23 20:03:20.306",
    "caller": "client/client.go:83",
    "msg": "register peer task result:true[200]",
    "peerId": "10.15.233.91-65000-43096-1614081800301788000",
    "errMsg": null
}

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