docker daemon（dockerd）配置文件 daemon.json

新博客地址：https://blog.iaiot.com/docker-daemon.html

原文：https://docs.docker.com/engine/reference/commandline/dockerd/

Usage:   dockerd COMMANDA self-sufficient runtime for containers.Options:--add-runtime runtime                   Register an additional OCI compatible runtime (default [])--allow-nondistributable-artifacts list Push nondistributable artifacts to specified registries (default [])--api-cors-header string                Set CORS headers in the Engine API--authorization-plugin list             Authorization plugins to load (default [])--bip string                            Specify network bridge IP-b, --bridge string                         Attach containers to a network bridge--cgroup-parent string                  Set parent cgroup for all containers--cluster-advertise string              Address or interface name to advertise--cluster-store string                  URL of the distributed storage backend--cluster-store-opt map                 Set cluster store options (default map[])--config-file string                    Daemon configuration file (default "/etc/docker/daemon.json")--containerd string                     Path to containerd socket--cpu-rt-period int                     Limit the CPU real-time period in microseconds--cpu-rt-runtime int                    Limit the CPU real-time runtime in microseconds--data-root string                      Root directory of persistent Docker state (default "/var/lib/docker")-D, --debug                                 Enable debug mode--default-gateway ip                    Container default gateway IPv4 address--default-gateway-v6 ip                 Container default gateway IPv6 address--default-address-pool                  Set the default address pool for local node networks--default-runtime string                Default OCI runtime for containers (default "runc")--default-ulimit ulimit                 Default ulimits for containers (default [])--dns list                              DNS server to use (default [])--dns-opt list                          DNS options to use (default [])--dns-search list                       DNS search domains to use (default [])--exec-opt list                         Runtime execution options (default [])--exec-root string                      Root directory for execution state files (default "/var/run/docker")--experimental                          Enable experimental features--fixed-cidr string                     IPv4 subnet for fixed IPs--fixed-cidr-v6 string                  IPv6 subnet for fixed IPs-G, --group string                          Group for the unix socket (default "docker")--help                                  Print usage-H, --host list                             Daemon socket(s) to connect to (default [])--icc                                   Enable inter-container communication (default true)--init                                  Run an init in the container to forward signals and reap processes--init-path string                      Path to the docker-init binary--insecure-registry list                Enable insecure registry communication (default [])--ip ip                                 Default IP when binding container ports (default 0.0.0.0)--ip-forward                            Enable net.ipv4.ip_forward (default true)--ip-masq                               Enable IP masquerading (default true)--iptables                              Enable addition of iptables rules (default true)--ipv6                                  Enable IPv6 networking--label list                            Set key=value labels to the daemon (default [])--live-restore                          Enable live restore of docker when containers are still running--log-driver string                     Default driver for container logs (default "json-file")-l, --log-level string                      Set the logging level ("debug", "info", "warn", "error", "fatal") (default "info")--log-opt map                           Default log driver options for containers (default map[])--max-concurrent-downloads int          Set the max concurrent downloads for each pull (default 3)--max-concurrent-uploads int            Set the max concurrent uploads for each push (default 5)--metrics-addr string                   Set default address and port to serve the metrics api on--mtu int                               Set the containers network MTU--node-generic-resources list           Advertise user-defined resource--no-new-privileges                     Set no-new-privileges by default for new containers--oom-score-adjust int                  Set the oom_score_adj for the daemon (default -500)-p, --pidfile string                        Path to use for daemon PID file (default "/var/run/docker.pid")--raw-logs                              Full timestamps without ANSI coloring--registry-mirror list                  Preferred Docker registry mirror (default [])--seccomp-profile string                Path to seccomp profile--selinux-enabled                       Enable selinux support--shutdown-timeout int                  Set the default shutdown timeout (default 15)-s, --storage-driver string                 Storage driver to use--storage-opt list                      Storage driver options (default [])--swarm-default-advertise-addr string   Set default address or interface for swarm advertised address--tls                                   Use TLS; implied by --tlsverify--tlscacert string                      Trust certs signed only by this CA (default "~/.docker/ca.pem")--tlscert string                        Path to TLS certificate file (default "~/.docker/cert.pem")--tlskey string                         Path to TLS key file (default ~/.docker/key.pem")--tlsverify                             Use TLS and verify the remote--userland-proxy                        Use userland proxy for loopback traffic (default true)--userland-proxy-path string            Path to the userland proxy binary--userns-remap string                   User/Group setting for user namespaces-v, --version                               Print version information and quit

Linux 上配置文件的默认位置是 /etc/docker/daemon.json。 --config-file 可用于指定非默认位置。

这是 Linux 上允许的配置选项示例：

{"authorization-plugins": [],"data-root": "","dns": [],"dns-opts": [],"dns-search": [],"exec-opts": [],"exec-root": "","experimental": false,"features": {},"storage-driver": "","storage-opts": [],"labels": [],"live-restore": true,"log-driver": "","log-opts": {},"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": "","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,"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": [],"seccomp-profile": "","insecure-registries": [],"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}]
}

修改后重新启动服务使之生效。

$ sudo systemctl daemon-reload

$ sudo systemctl restart docker

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