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문자

描述

创建一个新容器

使用

docker create [OPTIONS] IMAGE [COMMAND] [ARG...]

备选方案

名字,简写

默认

描述

--add-host


添加自定义的主机到IP映射(主机:IP)

--attach, -a


附加到STDIN,STDOUT或STDERR

--blkio-weight

0

阻止IO(相对权重),介于10和1000之间,或0禁用(默认值为0)

--blkio-weight-device


块IO重量(相对设备重量)

--cap-add


添加Linux功能

--cap-drop


删除Linux功能

--cgroup-parent


容器的可选父cgroup

--cidfile


将容器ID写入文件

--cpu-count

0

CPU数量(仅限Windows)

--cpu-percent

0

CPU百分比(仅限Windows)

--cpu-period

0

限制CPU CFS(完全公平调度程序)期间

--cpu-quota

0

限制CPU CFS(完全公平调度程序)配额

--cpu-rt-period

0

限制CPU实时周期(以微秒为单位)

--cpu-rt-runtime

0

以微秒为单位限制CPU实时运行时间

--cpu-shares,-c

0

CPU份额(相对重量)

--cpus


CPU数量

--cpuset-cpus


允许执行的CPU(0-3,0,1)

--cpuset-MEMS


允许执行的MEM(0-3,0,1)

--device


将主机设备添加到容器

--device-cgroup-rule


将规则添加到cgroup允许的设备列表

--device-read-bps


限制设备的读取速率(每秒字节数)

--device-read-iops


限制设备的读取速率(每秒IO)

--device-write-bps


限制写入速率(每秒字节数)到设备

--device-write-iops


限制写入速率(每秒IO)到设备

--disable-content-trust

真正

跳过图像验证

--dns


设置自定义DNS服务器

--dns-OPT


设置DNS选项

--dns-option


设置DNS选项

--dns-search


设置自定义DNS搜索域

--entrypoint


覆盖图像的默认入口点

--env,-e


设置环境变量

--env-file


读入环境变量文件

--expose


公开一个端口或一系列端口

--group-add


添加其他群组加入

--health-cmd


运行以检查运行状况的命令

--health-interval

0

运行检查之间的时间(ms | s | m | h)(默认为0)

--health-retries

0

需要报告不健康的连续失败

--health-start-period

0

启动健康重试倒数前,容器初始化的开始时间段(ms | s | m | h)(默认为0)

--health-timeout

0

允许一次检查运行的最长时间(ms | s | m | h)(默认值为0)

--help

打印用法

--hostname,-h


容器主机名称

--init

在容器中运行一个转发信号并收集进程的init

--interactive, -i

即使没有连接,也要保持STDIN打开

--io-MaxBandwidth

0

系统驱动器的最大IO带宽限制(仅限Windows)

--io-maxiops

0

系统驱动器的最大IOps限制(仅限Windows)

--ip


IPv4地址(例如172.30.100.104)

--ip6


IPv6地址(例如,2001:db8 :: 33)

--ipc


IPC命名空间使用

--isolation


容器隔离技术

--kernel-memory

0

内核内存限制

--label, -l


在容器上设置元数据

--label-file


阅读标签的行分隔文件

--link


将链接添加到其他容器

--link-local-ip


Container IPv4 / IPv6链路本地地址

--log-driver


记录容器的驱动程序

--log-OPT


日志驱动选项

--mac-address


容器MAC地址(例如,92:d0:c6:0a:29:33)

--memory, -m

0

内存限制

--memory-reservation

0

内存软限制

--memory-swap

0

交换限制等于内存加交换:'-1'以启用无限交换

--memory-swappiness

-1

调整容器内存swappiness(0到100)

--mount


将文件系统挂载附加到容器

--name


为容器分配一个名称

--net

默认

将容器连接到网络

--net-alias


为容器添加网络范围的别名

--network

默认

将容器连接到网络

--network-alias


为容器添加网络范围的别名

--no-healthcheck

禁用任何容器指定的HEALTHCHECK

--oom-kill-disable

禁用OOM杀手

--oom-score-adj

0

调整主机的OOM首选项(从-1000到1000)

--pid


要使用的PID名称空间

--pids-limit

0

调整容器匹配限制(无限制地设置-1)

--privileged

给这个容器赋予扩展权限

--publish,-p


将容器的端口发布到主机

--publish-all,-P

将所有暴露的端口发布到随机端口

--read-only

将容器的根文件系统挂载为只读

--restart

没有

重新启动策略以在容器退出时应用

--rm

当容器退出时自动移除容器

--runtime


运行时用于此容器

--security-opt


安全选项

--shm-size

0

/ dev / shm的大小

--stop-signal

SIGTERM

停止容器的信号

--stop-timeout

0

超时(以秒为单位)停止容器

--storage-opt


容器的存储驱动程序选项

--sysctl

地图[]

Sysctl选项

--tmpfs


挂载一个tmpfs目录

--tty, -t

分配一个伪TTY

--ulimit


Ulimit选项

--user,-u


用户名或UID(格式:<名称| uid>:<组| gid>)

--userns


要使用的用户名称空间

--uts


UTS命名空间使用

--volume, -v


绑定安装一个卷

--volume-driver


容器的可选卷驱动程序

--volumes-from


从指定容器装载卷

--workdir,-w


容器内的工作目录

父命令

命令

描述

docker

Docker CLI的基本命令。

扩展描述

docker create命令在指定的映像上创建一个可写容器层,并为运行指定的命令做好准备。然后将容器ID打印到STDOUT。这与docker run -d容器永远不会启动的情况类似。然后您可以使用该docker start <container_id>命令随时启动容器。

当您希望提前设置容器配置以便在需要时启动它时,这非常有用。新容器的初始状态是created

请看运行命令部分和码头运行参考更多细节。

实例

创建并启动容器

$ docker create -t -i fedora bash

6d8af538ec541dd581ebc2a24153a28329acb5268abe5ef868c1f1a261221752

$ docker start -a -i 6d8af538ec5

bash-4.2#

初始化volume

从v1.4.0开始,容器卷在该docker create阶段被初始化(即,docker run也是)。例如,这可以让你createdata体积的容器中,然后用它从另一个容器:

$ docker create -v /data --name data ubuntu

240633dfbb98128fa77473d3d9018f6123b99c454b3251427ae190a7d951ad57

$ docker run --rm --volumes-from data ubuntu ls -la /data

total 8drwxr-xr-x  2 root root 4096 Dec  5 04:10 .drwxr-xr-x 48 root root 4096 Dec  5 04:11 ..

同样,create主机目录绑定安装的卷容器,然后可以从后续容器中使用该容器:

$ docker create -v /home/docker:/docker --name docker ubuntu

9aa88c08f319cd1e4515c3c46b0de7cc9aa75e878357b1e96f91e2c773029f03

$ docker run --rm --volumes-from docker ubuntu ls -la /docker

total 20drwxr-sr-x  5 1000 staff  180 Dec  5 04:00 .drwxr-xr-x 48 root root  4096 Dec  5 04:13 ..-rw-rw-r--  1 1000 staff 3833 Dec  5 04:01 .ash_history-rw-r--r--  1 1000 staff  446 Nov 28 11:51 .ashrc-rw-r--r--  1 1000 staff   25 Dec  5 04:00 .gitconfig
drwxr-sr-x  3 1000 staff   60 Dec  1 03:28 .local-rw-r--r--  1 1000 staff  920 Nov 28 11:51 .profile
drwx--S---  2 1000 staff  460 Dec  5 00:51 .ssh
drwxr-xr-x 32 1000 staff 1140 Dec  5 04:01 docker

设置每个容器的存储驱动程序选项。

$ docker create -it --storage-opt size=120G fedora /bin/bash

这个(大小)将允许在创建时将容器rootfs大小设置为120G。此选项仅适用于devicemapperbtrfsoverlay2windowsfilterzfs图形驱动程序。对于devicemapperbtrfswindowsfilterzfs图形驱动程序,用户无法通过的尺寸小于默认尺寸BaseFS。对于overlay2存储驱动程序,大小选项仅在支持fs为xfs并使用pquota安装选项安装时可用。在这些条件下,用户可以通过任何小于支持fs大小的大小。

指定容器的隔离技术(隔离)

在Windows上运行Docker容器的情况下,此选项很有用。该--isolation=<value>选项设置容器的隔离技术。在Linux上,唯一支持的是default使用Linux命名空间的选项。在Microsoft Windows上,您可以指定这些值:

描述

默认

使用Docker守护进程的--exec-opt指定的值。如果守护进程未指定隔离技术,则Microsoft将使用进程作为其默认值

守护进程在Windows服务器上运行,如果在Windows客户端上运行,则守护进程运行在hyperv上。


process

仅命名空间隔离。

Hyper-V

基于Hyper-V管理程序分区的隔离。

指定--isolation没有值的标志与设置--isolation="default"相同。

处理动态创建的设备(-device-cgroup-rule)

在创建时分配可用于容器的设备。分配的设备都将被添加到cgroup.allow文件,并在运行后创建到容器中。当需要将新设备添加到正在运行的容器时,这会造成问题。

解决方案之一是向容器添加更宽松的规则,以允许访问更广泛的设备。例如,假设我们的容器需要访问具有主要42和任意次数的字符设备(添加为新设备出现),则会添加以下规则:

docker create --device-cgroup-rule='c 42:* rmw' -name my-container my-image

然后,用户可能会要求udev执行脚本,docker exec my-container mknod newDevX c 42 <minor>以便在添加所需设备时使用该脚本。

注意:最初存在的设备仍然需要明确地添加到 create / run 命令中

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