在Linux操作上，docker守护进程配置文件的默认位置是/etc/docker/daemon.json。可以通过–config-file标志指定非默认位置。下面是Linux操作系统上允许的配置选项完整示例：

{

    “authorization-plugins”: [],

    “data-root”: “”,  # docker的根目录 (默认值: “/var/lib/docker”)

    “dns”: [],

    “dns-opts”: [],

    “dns-search”: [],

    “exec-opts”: [],

    “exec-root”: “”,

    “experimental”: false,

    “features”: {},

    “storage-driver“: “”,  # docker使用的存储驱动

    “storage-opts”: [],

    “labels”: [],

    “live-restore”: true,

    “log-driver“: “json-file”,  # docker的日志驱动，此处的值为json-file

    “log-opts”: {  # docker的日志设置

        “max-size”: “10m”,  # docker的日志大小为10m

        “max-file”:”5″, # 最大保留5个日志文件

        “labels”: “somelabel”,

        “env”: “os,customer”

    },

    “mtu”: 0,

    “pidfile”: “”,

    “cluster-store”: “”,

    “cluster-store-opts”: {},

    “cluster-advertise”: “”,

    “max-concurrent-downloads”: 3,

    “max-concurrent-uploads”: 5,

    “default-shm-size”: “64M”,

    “shutdown-timeout”: 15,

    “debug”: true,

    “hosts”: [],

    “log-level”: “”,  # 设置日志层次 (“debug”|”info”|”warn”|”error”|”fatal”) (默认值为: “info”)

    “tls”: true,

    “tlsverify”: true,

    “tlscacert”: “”,

    “tlscert”: “”,

    “tlskey”: “”,

    “swarm-default-advertise-addr”: “”,

    “api-cors-header”: “”,

    “selinux-enabled”: false,

    “userns-remap”: “”,

    “group”: “”,

    “cgroup-parent”: “”,

    “default-ulimits”: {

        “nofile”: {

            “Name”: “nofile”,

            “Hard”: 64000,

            “Soft”: 64000

        }

    },

    “init”: false,

    “init-path”: “/usr/libexec/docker-init”,

    “ipv6”: false,  # 是否启用ipv6网络

    “iptables”: false, # 是否启用iptables规则，默认值为true

    “ip-forward”: false,

    “ip-masq”: false,

    “userland-proxy”: false,

    “userland-proxy-path”: “/usr/libexec/docker-proxy”,

    “ip”: “0.0.0.0”,

    “bridge”: “”,

    “bip”: “”,

    “fixed-cidr”: “”,

    “fixed-cidr-v6”: “”,

    “default-gateway”: “”,

    “default-gateway-v6”: “”,

    “icc”: false,

    “raw-logs”: false,

    “allow-nondistributable-artifacts”: [],

    “registry-mirrors”: [], # 镜像仓库的镜像地址

    “seccomp-profile”: “”,

    “insecure-registries”: [], # 不安全镜像仓库列表

    “no-new-privileges”: false,

    “default-runtime”: “runc”, # docker的默认运行时环境

    “oom-score-adjust”: -500,

    “node-generic-resources”: [“NVIDIA-GPU=UUID1”, “NVIDIA-GPU=UUID2”],

    “runtimes”: {

        “cc-runtime”: {

            “path”: “/usr/bin/cc-runtime”

        },

        “custom”: {

            “path”: “/usr/local/bin/my-runc-replacement”,

            “runtimeArgs”: [

                “–debug”

            ]

        }

    },

    “default-address-pools”:[

        {“base”:”172.80.0.0/16″,”size”:24},

        {“base”:”172.90.0.0/16″,”size”:24}

    ]

}

在编辑daemon.json后，需要通过执行下面的命令对docker进行重启。

systemctl daemon-reload
systemctl restart docker