约定：
OS： Centos7.6
Docker: 19.03.12
路径： /etc/docker/daemon.json
配置解析
{ "authorization-plugins": [], "data-root": "", #Docker运行时使用的根路径,根路径下的内容稍后介绍，默认/var/lib/docker "dns": [], #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": "", "experimental": false, "features": {}, "storage-driver": "", "storage-opts": [], "labels": [], #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-opts": {}, "mtu": 0, "pidfile": "", #Docker守护进程的PID文件 "cluster-store": "", "cluster-store-opts": {}, "cluster-advertise": "", "max-concurrent-downloads": 3, "max-concurrent-uploads": 5, "default-shm-size": "64M", "shutdown-timeout": 15, "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 "hosts": [], #设置容器hosts "log-level": "", "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 "tls": true, "tlsverify": true, "tlscacert": "", "tlscert": "", "tlskey": "", "swarm-default-advertise-addr": "", "api-cors-header": "", "selinux-enabled": false, #默认 false，启用selinux支持 "userns-remap": "", "group": "", #Unix套接字的属组,仅指/var/run/docker.sock "cgroup-parent": "", "default-ulimits": { "nofile": { "Name": "nofile", "Hard": 64000, "Soft": 64000 } }, "init": false, "init-path": "/usr/libexec/docker-init", "ipv6": false, "iptables": 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, "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": [], #镜像加速的地址，增加后在 docker info中可查看。 "seccomp-profile": "", "insecure-registries": [], #配置docker的私库地址 "no-new-privileges": false, "default-runtime": "runc", "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}] }