daemon文件

/etc/docker/daemon.json

{
    "api-cors-header": "", 
    "authorization-plugins": [ ], 
    "bip": "", 
    "bridge": "", 
    "cgroup-parent": "", 
    "cluster-store": "", 
    "cluster-store-opts": { }, 
    "cluster-advertise": "", 
    "debug": true,            # 启用debug的模式，启用后，可以看到很多的启动信息，默认false
    "default-gateway": "", 
    "default-gateway-v6": "", 
    "default-runtime": "runc", 
    "default-ulimits": { }, 
    "disable-legacy-registry": false, 
    "dns": ["192.168.1.1"],  # 设定容器DNS的地址，在容器的 /etc/resolv.conf文件中可查看
    "dns-opts": [ ],         # 容器 /etc/resolv.conf 文件，其他设置
    "dns-search": [ ],       # 设定容器的搜索域，当设定搜索域为 .example.com 时，在搜索一个名为 host 的 主机时，DNS不仅搜索host，还会搜索host.example.com 。 注意：如果不设置， Docker 会默认用主机上的 /etc/resolv.conf 来配置容器
    "exec-opts": [ ], 
    "exec-root": "", 
    "fixed-cidr": "", 
    "fixed-cidr-v6": "", 
    "graph": "/var/lib/docker",      # 已废弃，使用data-root代替,这个主要看docker的版本
    "data-root": "/var/lib/docker",  # Docker运行时使用的根路径，默认/var/lib/docker
    "group": "",                     # Unix套接字的属组,仅指/var/run/docker.sock
    "hosts": [ ],                    # 设置容器hosts
    "icc": false, 
    "insecure-registries": [ ],      # 配置docker的私库地址
    "ip": "0.0.0.0", 
    "iptables": false, 
    "ipv6": false, 
    "ip-forward": false,  # 默认true, 启用 net.ipv4.ip_forward ,进入容器后使用 sysctl -a | grepnet.ipv4.ip_forward 查看
    "ip-masq": false, 
    "labels": ["nodeName=node-121"],  # docker主机的标签，很实用的功能，例如定义：–label nodeName=host-121
    "live-restore": true, 
    "log-driver": "", 
    "log-level": "", 
    "log-opts": { }, 
    "max-concurrent-downloads": 3, 
    "max-concurrent-uploads": 5, 
    "mtu": 0, 
    "oom-score-adjust": -500, 
    "pidfile": "",     # Docker守护进程的PID文件
    "raw-logs": false, 
    "registry-mirrors": ["xxxx"],  # 镜像加速的地址，增加后在 docker info中可查看
    "runtimes": {
        "runc": {
            "path": "runc"
        }, 
        "custom": {
            "path": "/usr/local/bin/my-runc-replacement", 
            "runtimeArgs": [
                "--debug"
            ]
        }
    }, 
    "selinux-enabled": false,  # 默认 false，启用selinux支持
    "storage-driver": "", 
    "storage-opts": [ ], 
    "swarm-default-advertise-addr": "", 
    "tls": true,       # 默认false, 启动TLS认证开关
    "tlscacert": "",   # 默认~/.docker/ca.pem，通过CA认证过的的certificate文件路径
    "tlscert": "",     # 默认~/.docker/cert.pem，TLS的certificate文件路径
    "tlskey": "",      # 默认~/.docker/key.pem，TLS的key文件路径
    "tlsverify": true, # 默认false，使用TLS并做后台进程与客户端通讯的验证
    "userland-proxy": false, 
    "userns-remap": ""
}