Docker selenium自动化 - 环境部署与 Python 自动化运行实战演示
- 第一章：docker selenium 环境部署
- ① 下载 selenium 镜像
- ② 容器 selenium 实例的创建与运行
- ③ 浏览器访问 selenium Grid
- ④ docker 命令大全
- 第二章：Python 调用 docker selenium 执行自动化实例演示
- ① 源码展示
- ② 运行效果
[系列文章篇]
篇章一：Docker selenium 自动化 - windows 版 docker 的安装与运行环境检测
[问题处理篇]
篇章一：Docker selenium 自动化 - 修改 /dev/shm 路径大小实例演示，“session deleted because of page crash” 问题解决
第一章：docker selenium 环境部署
① 下载 selenium 镜像
首先拉取 selenium/hub 镜像。
执行命令：docker pull selenium/hub
然后拉取 selenium/node-chrome 镜像。
执行命令：docker pull selenium/node-chrome
docker images 查看容器镜像。
② 容器 selenium 实例的创建与运行
创建容器实例：
docker run -d -P --name=hub selenium/hub
docker run -d -P --link=hub:hub selenium/node-chrome
查看容器实例：
docker ps
可以通过 docker start/stop 实例名 来启动停用容器实例。
一般服务器重启后，就需要来启动容器了。
③ 浏览器访问 selenium Grid
docker ps 可以查看生成的端口，通过本地 ip + 端口号 即可访问 selenium Grid 控制台。
可以看到浏览器版本相关信息。
可以看到相关配置信息。
④ docker 命令大全
docker 相关命令
docker --help Usage: docker [OPTIONS] COMMAND A self-sufficient runtime for containers Options: --config string Location of client config files (default "C:\\Users\\Administrator\\.docker") -c, --context string Name of the context to use to connect to the daemon (overrides DOCKER_HOST env var and default context set with "docker context use") -D, --debug Enable debug mode -H, --host list Daemon socket(s) to connect to -l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info") --tls Use TLS; implied by --tlsverify --tlscacert string Trust certs signed only by this CA (default "C:\\Users\\Administrator\\.docker\\ca.pem") --tlscert string Path to TLS certificate file (default "C:\\Users\\Administrator\\.docker\\cert.pem") --tlskey string Path to TLS key file (default "C:\\Users\\Administrator\\.docker\\key.pem") --tlsverify Use TLS and verify the remote -v, --version Print version information and quit Management Commands: builder Manage builds buildx* Build with BuildKit (Docker Inc., v0.6.3) compose* Docker Compose (Docker Inc., v2.0.0) config Manage Docker configs container Manage containers context Manage contexts image Manage images manifest Manage Docker image manifests and manifest lists network Manage networks node Manage Swarm nodes plugin Manage plugins scan* Docker Scan (Docker Inc., v0.8.0) secret Manage Docker secrets service Manage services stack Manage Docker stacks swarm Manage Swarm system Manage Docker trust Manage trust on Docker images volume Manage volumes Commands: attach Attach local standard input, output, and error streams to a running container build Build an image from a Dockerfile commit Create a new image from a container's changes cp Copy files/folders between a container and the local filesystem create Create a new container diff Inspect changes to files or directories on a container's filesystem events Get real time events from the server exec Run a command in a running container export Export a container's filesystem as a tar archive history Show the history of an image images List images import Import the contents from a tarball to create a filesystem image info Display system-wide information inspect Return low-level information on Docker objects kill Kill one or more running containers load Load an image from a tar archive or STDIN login Log in to a Docker registry logout Log out from a Docker registry logs Fetch the logs of a container pause Pause all processes within one or more containers port List port mappings or a specific mapping for the container ps List containers pull Pull an image or a repository from a registry push Push an image or a repository to a registry rename Rename a container restart Restart one or more containers rm Remove one or more containers rmi Remove one or more images run Run a command in a new container save Save one or more images to a tar archive (streamed to STDOUT by default) search Search the Docker Hub for images start Start one or more stopped containers stats Display a live stream of container(s) resource usage statistics stop Stop one or more running containers tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE top Display the running processes of a container unpause Unpause all processes within one or more containers update Update configuration of one or more containers version Show the Docker version information wait Block until one or more containers stop, then print their exit codes Run 'docker COMMAND --help' for more information on a command. To get more help with docker, check out our guides at https://docs.docker.com/go/guides/
docker run 相关命令
docker run --help Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...] Run a command in a new container Options: --add-host list Add a custom host-to-IP mapping (host:ip) -a, --attach list Attach to STDIN, STDOUT or STDERR --blkio-weight uint16 Block IO (relative weight), between 10 and 1000, or 0 to disable (default 0) --blkio-weight-device list Block IO weight (relative device weight) (default []) --cap-add list Add Linux capabilities --cap-drop list Drop Linux capabilities --cgroup-parent string Optional parent cgroup for the container --cgroupns string Cgroup namespace to use (host|private) 'host': Run the container in the Docker host's cgroup namespace 'private': Run the container in its own private cgroup namespace '': Use the cgroup namespace as configured by the default-cgroupns-mode option on the daemon (default) --cidfile string Write the container ID to the file --cpu-period int Limit CPU CFS (Completely Fair Scheduler) period --cpu-quota int Limit CPU CFS (Completely Fair Scheduler) quota --cpu-rt-period int Limit CPU real-time period in microseconds --cpu-rt-runtime int Limit CPU real-time runtime in microseconds -c, --cpu-shares int CPU shares (relative weight) --cpus decimal Number of CPUs --cpuset-cpus string CPUs in which to allow execution (0-3, 0,1) --cpuset-mems string MEMs in which to allow execution (0-3, 0,1) -d, --detach Run container in background and print container ID --detach-keys string Override the key sequence for detaching a container --device list Add a host device to the container --device-cgroup-rule list Add a rule to the cgroup allowed devices list --device-read-bps list Limit read rate (bytes per second) from a device (default []) --device-read-iops list Limit read rate (IO per second) from a device (default []) --device-write-bps list Limit write rate (bytes per second) to a device (default []) --device-write-iops list Limit write rate (IO per second) to a device (default []) --disable-content-trust Skip image verification (default true) --dns list Set custom DNS servers --dns-option list Set DNS options --dns-search list Set custom DNS search domains --domainname string Container NIS domain name --entrypoint string Overwrite the default ENTRYPOINT of the image -e, --env list Set environment variables --env-file list Read in a file of environment variables --expose list Expose a port or a range of ports --gpus gpu-request GPU devices to add to the container ('all' to pass all GPUs) --group-add list Add additional groups to join --health-cmd string Command to run to check health --health-interval duration Time between running the check (ms|s|m|h) (default 0s) --health-retries int Consecutive failures needed to report unhealthy --health-start-period duration Start period for the container to initialize before starting health-retries countdown (ms|s|m|h) (default 0s) --health-timeout duration Maximum time to allow one check to run (ms|s|m|h) (default 0s) --help Print usage -h, --hostname string Container host name --init Run an init inside the container that forwards signals and reaps processes -i, --interactive Keep STDIN open even if not attached --ip string IPv4 address (e.g., 172.30.100.104) --ip6 string IPv6 address (e.g., 2001:db8::33) --ipc string IPC mode to use --isolation string Container isolation technology --kernel-memory bytes Kernel memory limit -l, --label list Set meta data on a container --label-file list Read in a line delimited file of labels --link list Add link to another container --link-local-ip list Container IPv4/IPv6 link-local addresses --log-driver string Logging driver for the container --log-opt list Log driver options --mac-address string Container MAC address (e.g., 92:d0:c6:0a:29:33) -m, --memory bytes Memory limit --memory-reservation bytes Memory soft limit --memory-swap bytes Swap limit equal to memory plus swap: '-1' to enable unlimited swap --memory-swappiness int Tune container memory swappiness (0 to 100) (default -1) --mount mount Attach a filesystem mount to the container --name string Assign a name to the container --network network Connect a container to a network --network-alias list Add network-scoped alias for the container --no-healthcheck Disable any container-specified HEALTHCHECK --oom-kill-disable Disable OOM Killer --oom-score-adj int Tune host's OOM preferences (-1000 to 1000) --pid string PID namespace to use --pids-limit int Tune container pids limit (set -1 for unlimited) --platform string Set platform if server is multi-platform capable --privileged Give extended privileges to this container -p, --publish list Publish a container's port(s) to the host -P, --publish-all Publish all exposed ports to random ports --pull string Pull image before running ("always"|"missing"|"never") (default "missing") --read-only Mount the container's root filesystem as read only --restart string Restart policy to apply when a container exits (default "no") --rm Automatically remove the container when it exits --runtime string Runtime to use for this container --security-opt list Security Options --shm-size bytes Size of /dev/shm --sig-proxy Proxy received signals to the process (default true) --stop-signal string Signal to stop a container (default "15") --stop-timeout int Timeout (in seconds) to stop a container --storage-opt list Storage driver options for the container --sysctl map Sysctl options (default map[]) --tmpfs list Mount a tmpfs directory -t, --tty Allocate a pseudo-TTY --ulimit ulimit Ulimit options (default []) -u, --user string Username or UID (format: <name|uid>[:<group|gid>]) --userns string User namespace to use --uts string UTS namespace to use -v, --volume list Bind mount a volume --volume-driver string Optional volume driver for the container --volumes-from list Mount volumes from the specified container(s) -w, --workdir string Working directory inside the container
第二章：Python 调用 docker selenium 执行自动化实例演示
① 源码展示
# -*- coding: UTF8 -*- # 2021.11.16 # 小蓝枣 # docker selenium 自动化 from selenium import webdriver from time import sleep driver = webdriver.Remote( command_executor='http://127.0.0.1:55006/wd/hub', desired_capabilities={'browserName': 'chrome'} ) try: # 登录中国气象网查看北京天气 driver.get('http://www.weather.com.cn/weather1d/101010100.shtml') sleep(3) # 读取天气信息 bj_temperature = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="tem"]/*').text bj_wind_direction = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="zs w"]/span').text bj_wind_class = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="zs w"]/em').text bj_air_quality = driver.find_element_by_xpath('//*[@class="sk mySkyNull"]//*[@class="zs pol"]//a').text bj_weather = ''' 城市：北京 当前温度：%s 风向：%s 风力：%s 空气质量：%s '''%(bj_temperature,bj_wind_direction,bj_wind_class,bj_air_quality) # 打印抓取的天气信息 print(bj_weather) # 保存截图 driver.get_screenshot_as_file("docker_selenium_run_001.png") # 保证出错后进程正常释放 finally: driver.quit()
② 运行效果
抓取的天气信息如下：
同时可以看到保存的截图。
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