目录搜索
ComposeAbout versions and upgrading (Compose)ASP.NET Core + SQL Server on Linux (Compose)CLI environment variables (Compose)Command-line completion (Compose)Compose(组成)Compose command-line reference(组合命令行参考)Control startup order (Compose)Django and PostgreSQL (Compose)Docker stacks and distributed application bundles (Compose)docker-compose build(docker-compose构建)docker-compose bundledocker-compose configdocker-compose createdocker-compose downdocker-compose eventsdocker-compose execdocker-compose helpdocker-compose imagesdocker-compose killdocker-compose logsdocker-compose pausedocker-compose portdocker-compose psdocker-compose pulldocker-compose pushdocker-compose restartdocker-compose rmdocker-compose rundocker-compose scaledocker-compose startdocker-compose stopdocker-compose topdocker-compose unpausedocker-compose upEnvironment file (Compose)Environment variables in ComposeExtend services in ComposeFrequently asked questions (Compose)Getting started (Compose)Install ComposeLink environment variables (deprecated) (Compose)Networking in ComposeOverview of Docker ComposeOverview of docker-compose CLIQuickstart: Compose and WordPressRails and PostgreSQL (Compose)Sample apps with ComposeUsing Compose in productionUsing Compose with SwarmEngine.NET Core application (Engine)About images, containers, and storage drivers (Engine)Add nodes to the swarm (Engine)Apply custom metadata (Engine)Apply rolling updates (Engine)apt-cacher-ngBest practices for writing Dockerfiles (Engine)Binaries (Engine)Bind container ports to the host (Engine)Breaking changes (Engine)Build your own bridge (Engine)Configure container DNS (Engine)Configure container DNS in user-defined networks (Engine)CouchDB (Engine)Create a base image (Engine)Create a swarm (Engine)Customize the docker0 bridge (Engine)Debian (Engine)Default bridge networkDelete the service (Engine)Deploy a service (Engine)Deploy services to a swarm (Engine)Deprecated Engine featuresDocker container networking (Engine)Docker overview (Engine)Docker run reference (Engine)Dockerfile reference (Engine)Dockerize an applicationDrain a node (Engine)EngineFAQ (Engine)Fedora (Engine)Get started (Engine)Get started with macvlan network driver (Engine)Get started with multi-host networking (Engine)How nodes work (Engine)How services work (Engine)Image management (Engine)Inspect the service (Engine)Install Docker (Engine)IPv6 with Docker (Engine)Join nodes to a swarm (Engine)Legacy container links (Engine)Lock your swarm (Engine)Manage nodes in a swarm (Engine)Manage sensitive data with Docker secrets (Engine)Manage swarm security with PKI (Engine)Manage swarm service networks (Engine)Migrate to Engine 1.10Optional Linux post-installation steps (Engine)Overview (Engine)PostgreSQL (Engine)Raft consensus in swarm mode (Engine)Riak (Engine)Run Docker Engine in swarm modeScale the service (Engine)SDKs (Engine)Select a storage driver (Engine)Set up for the tutorial (Engine)SSHd (Engine)Storage driver overview (Engine)Store service configuration data (Engine)Swarm administration guide (Engine)Swarm mode key concepts (Engine)Swarm mode overlay network security model (Engine)Swarm mode overview (Engine)Understand container communication (Engine)Use multi-stage builds (Engine)Use swarm mode routing mesh (Engine)Use the AUFS storage driver (Engine)Use the Btrfs storage driver (Engine)Use the Device mapper storage driver (Engine)Use the OverlayFS storage driver (Engine)Use the VFS storage driver (Engine)Use the ZFS storage driver (Engine)Engine: Admin GuideAmazon CloudWatch logs logging driver (Engine)Bind mounts (Engine)Collect Docker metrics with Prometheus (Engine)Configuring and running Docker (Engine)Configuring logging drivers (Engine)Control and configure Docker with systemd (Engine)ETW logging driver (Engine)Fluentd logging driver (Engine)Format command and log output (Engine)Google Cloud logging driver (Engine)Graylog Extended Format (GELF) logging driver (Engine)Journald logging driver (Engine)JSON File logging driver (Engine)Keep containers alive during daemon downtime (Engine)Limit a container's resources (Engine)Link via an ambassador container (Engine)Log tags for logging driver (Engine)Logentries logging driver (Engine)PowerShell DSC usage (Engine)Prune unused Docker objects (Engine)Run multiple services in a container (Engine)Runtime metrics (Engine)Splunk logging driver (Engine)Start containers automatically (Engine)Storage overview (Engine)Syslog logging driver (Engine)tmpfs mountsTroubleshoot volume problems (Engine)Use a logging driver plugin (Engine)Using Ansible (Engine)Using Chef (Engine)Using Puppet (Engine)View a container's logs (Engine)Volumes (Engine)Engine: CLIDaemon CLI reference (dockerd) (Engine)dockerdocker attachdocker builddocker checkpointdocker checkpoint createdocker checkpoint lsdocker checkpoint rmdocker commitdocker configdocker config createdocker config inspectdocker config lsdocker config rmdocker containerdocker container attachdocker container commitdocker container cpdocker container createdocker container diffdocker container execdocker container exportdocker container inspectdocker container killdocker container logsdocker container lsdocker container pausedocker container portdocker container prunedocker container renamedocker container restartdocker container rmdocker container rundocker container startdocker container statsdocker container stopdocker container topdocker container unpausedocker container updatedocker container waitdocker cpdocker createdocker deploydocker diffdocker eventsdocker execdocker exportdocker historydocker imagedocker image builddocker image historydocker image importdocker image inspectdocker image loaddocker image lsdocker image prunedocker image pulldocker image pushdocker image rmdocker image savedocker image tagdocker imagesdocker importdocker infodocker inspectdocker killdocker loaddocker logindocker logoutdocker logsdocker networkdocker network connectdocker network createdocker network disconnectdocker network inspectdocker network lsdocker network prunedocker network rmdocker nodedocker node demotedocker node inspectdocker node lsdocker node promotedocker node psdocker node rmdocker node updatedocker pausedocker plugindocker plugin createdocker plugin disabledocker plugin enabledocker plugin inspectdocker plugin installdocker plugin lsdocker plugin pushdocker plugin rmdocker plugin setdocker plugin upgradedocker portdocker psdocker pulldocker pushdocker renamedocker restartdocker rmdocker rmidocker rundocker savedocker searchdocker secretdocker secret createdocker secret inspectdocker secret lsdocker secret rmdocker servicedocker service createdocker service inspectdocker service logsdocker service lsdocker service psdocker service rmdocker service scaledocker service updatedocker stackdocker stack deploydocker stack lsdocker stack psdocker stack rmdocker stack servicesdocker startdocker statsdocker stopdocker swarmdocker swarm cadocker swarm initdocker swarm joindocker swarm join-tokendocker swarm leavedocker swarm unlockdocker swarm unlock-keydocker swarm updatedocker systemdocker system dfdocker system eventsdocker system infodocker system prunedocker tagdocker topdocker unpausedocker updatedocker versiondocker volumedocker volume createdocker volume inspectdocker volume lsdocker volume prunedocker volume rmdocker waitUse the Docker command line (Engine)Engine: ExtendAccess authorization plugin (Engine)Docker log driver pluginsDocker network driver plugins (Engine)Extending Engine with pluginsManaged plugin system (Engine)Plugin configuration (Engine)Plugins API (Engine)Volume plugins (Engine)Engine: SecurityAppArmor security profiles for Docker (Engine)Automation with content trust (Engine)Content trust in Docker (Engine)Delegations for content trust (Engine)Deploying Notary (Engine)Docker security (Engine)Docker security non-events (Engine)Isolate containers with a user namespace (Engine)Manage keys for content trust (Engine)Play in a content trust sandbox (Engine)Protect the Docker daemon socket (Engine)Seccomp security profiles for Docker (Engine)Secure EngineUse trusted imagesUsing certificates for repository client verification (Engine)Engine: TutorialsEngine tutorialsNetwork containers (Engine)Get StartedPart 1: OrientationPart 2: ContainersPart 3: ServicesPart 4: SwarmsPart 5: StacksPart 6: Deploy your appMachineAmazon Web Services (Machine)Digital Ocean (Machine)docker-machine activedocker-machine configdocker-machine createdocker-machine envdocker-machine helpdocker-machine inspectdocker-machine ipdocker-machine killdocker-machine lsdocker-machine provisiondocker-machine regenerate-certsdocker-machine restartdocker-machine rmdocker-machine scpdocker-machine sshdocker-machine startdocker-machine statusdocker-machine stopdocker-machine upgradedocker-machine urlDriver options and operating system defaults (Machine)Drivers overview (Machine)Exoscale (Machine)Generic (Machine)Get started with a local VM (Machine)Google Compute Engine (Machine)IBM Softlayer (Machine)Install MachineMachineMachine CLI overviewMachine command-line completionMachine concepts and helpMachine overviewMicrosoft Azure (Machine)Microsoft Hyper-V (Machine)Migrate from Boot2Docker to MachineOpenStack (Machine)Oracle VirtualBox (Machine)Provision AWS EC2 instances (Machine)Provision Digital Ocean Droplets (Machine)Provision hosts in the cloud (Machine)Rackspace (Machine)VMware Fusion (Machine)VMware vCloud Air (Machine)VMware vSphere (Machine)NotaryClient configuration (Notary)Common Server and signer configurations (Notary)Getting started with NotaryNotary changelogNotary configuration filesRunning a Notary serviceServer configuration (Notary)Signer configuration (Notary)Understand the service architecture (Notary)Use the Notary client
文字

卷和绑定座默认情况下装入容器的文件系统,它们的内容存储在主机上。

在某些情况下,您可能不希望将容器的数据存储在主机上,但也不希望将数据写入容器的可写层,原因是性能或安全原因,或者数据与非持久性应用程序状态有关。一个例子可能是容器的应用程序创建并根据需要使用的临时一次性密码。

为了让容器访问数据而不需要永久写入数据,可以使用tmpfs只存储在主机内存中的挂载(如果内存不足,则使用交换)。当容器停止时,tmpfs安装座被移除。如果容器已提交,tmpfs则不会保存安装。

选择-tmpfs或-挂载标志。

最初,--tmpfs标志用于独立容器,--mount旗号用于群服务。但是,从Docker 17.06开始,您还可以使用--mount用独立的容器。总的来说,--mount更明确更详细。最大的区别是--tmpfs标志不支持任何可配置选项。

针尖新用户应使用--mount语法。有经验的用户可能更熟悉--tmpfs语法,但鼓励使用--mount因为研究表明它更容易使用。

  • --tmpfstmpfs安装时不允许您指定任何可配置选项,并且只能与独立容器一起使用。

  • --mount*由多个键值对组成,以逗号分隔,每个键值由一个<key>=<value>元组。大--mount语法比-v--volume,但是键的顺序并不重要,并且标志的值更容易理解。

- The `type` of the mount, which can be [`bind`](../bind-mounts-md/index), `volume`, or [`tmpfs`](index). This topic discusses `tmpfs`, so the type will always be `tmpfs`.- The `destination` takes as its value the path where the `tmpfs` mount will be mounted in the container. May be specified as `destination`, `dst`, or `target`.- The `tmpfs-type` and `tmpfs-mode` options. See [tmpfs options](about:blank#tmpfs-options).

下面的示例显示了--mount--tmpfs在可能的情况下语法,以及--mount首先介绍。

差异--tmpfs--mount行为

  • --tmpfs标志不允许您指定任何可配置选项。

  • --tmpfs标记不能与群集服务一起使用。你必须用--mount...

tmpfs容器的限制

  • tmpfs容器之间不能共享挂载。

  • tmpfs挂载只在Linux容器上工作,而不是在Windows容器上工作。

在容器中使用tmpfs挂载

使用tmpfs安装在容器中,使用--tmpfs标志,或使用--mount旗子type=tmpfsdestination选择。没有sourcetmpfs坐骑。下面的示例创建tmpfs/app在Nginx容器里。第一个示例使用--mount标志和第二个使用--tmpfs旗子。

  • --mount

  • --tmpfs

$ docker run -d \  -it \  --name tmptest \  --mount type=tmpfs,destination=/app \
  nginx:latest
$ docker run -d \  -it \  --name tmptest \  --tmpfs /app \
  nginx:latest

验证挂载是否为tmpfs跑上山docker container inspect tmptest寻找Mounts部分:

"Tmpfs": {    "/app": ""},

拆下容器:

$ docker container stop tmptest

$ Docker container rm tmptest

指定tmpfs选项

tmpfs挂载允许两个配置选项,这两个选项都不是必需的。如果需要指定这些选项,则必须使用--mount旗帜,如--tmpfs旗子不支持他们。

选项

描述

tmpfs的大小

tmpfs的大小,以字节为单位。无限制默认。

tmpfs的模式

tmpfs的八进制文件模式。例如,700或0770.默认为1777或世界可写。

下面的示例设置tmpfs-mode1770,因此在容器中它是不可读的。

docker run -d \  -it \  --name tmptest \  --mount type=tmpfs,destination=/app,tmpfs-mode=1770 \
  nginx:latest

下一步

  • 了解卷

  • 了解绑定座

  • 了解存储驱动程序

上一篇:下一篇: