/etc/docker/daemon.json
/etc/docker/daemon.json 是 docker 的配置文件，默认是没有的，需要我们手动创建，可配置项如下：
[root@localhost ~]$ vim /etc/docker/daemon.json
{
"authorization-plugins": [],
"data-root": "", # 设置docker运行时的根目录
"dns": [], # 设置容器的DNS地址
"dns-opts": [], # 设置容器的/etc/resolv.conf文件
"dns-search": [],
"exec-opts": [],
"exec-root": "",
"experimental": false,
"features": {},
"storage-driver": "",
"storage-opts": [],
"labels": [],
"live-restore": true,
"log-driver": "json-file",
"log-opts": {
"max-size": "10m",
"max-files":"5",
"labels": "somelabel",
"env": "os,customer"
},
"mtu": 0,
"pidfile": "", # 设置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, # 是否以debug模式启动docker
"hosts": [], # 设置容器的hosts
"log-level": "",
"tls": true,
"tlsverify": true,
"tlscacert": "",
"tlscert": "",
"tlskey": "",
"swarm-default-advertise-addr": "",
"api-cors-header": "",
"selinux-enabled": false, # 设置是否支持SELinux
"userns-remap": "",
"group": "",
"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,
"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": [], # 设置镜像加速地址
"seccomp-profile": "",
"insecure-registries": [], # 设置docker的私有仓库地址
"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}]
}