如何将Docker容器端口暴露给另一个容器
我有一个docker集装箱，依靠selenium作为链接服务（也是docker集装箱）。 这个docker集装箱只是使用selenium服务作为主机来运行nightwatchJStesting无头。 selenium服务启动正常，但是当夜间testing试图在docker集装箱内运行时，我在selenium服务端口（4444）上收到拒绝的连接错误。 我可以使用curl访问此端口的selenium主机，也可以运行它的夜间testing，如果我不通过docker运行testing。 这里是我的docker撰写yaml文件：
services: selenium: image: selenium/standalone-chrome ports: - "4444:4444" nightwatch: build: . volumes: - .:/home/client_test links: - selenium environment: selenium: 4444 expose: - "4444" 和我的docker文件：
# #Nightwatch.js Dockerfile # FROM alpine:3.4 WORKDIR /home/client-tests ADD . /home/client-tests/ ENV NODE_PATH=/home/client-app/node_modules #RUN apk add 'firefox-esr<45.6.0-r0' #install firefox #RUN wget -c http://ftp.mozilla.org/pub/firefox/releases/45.8.0esr/firefox-45.8.0esr.linux-x86_64.sdk.tar.bz2 -P /usr/local #RUN tar xvjf /usr/local/firefox-45.8.0esr.linux-x86_64.sdk.tar.bz2 #RUN ln -s /usr/local/firefox/firefox /usr/local/bin/ RUN apk --no-cache --update add bash \ # Install tini, a tiny but valid init for containers tini \ # Install nodejs nodejs-lts \ #Install java openjdk8-jre-base \ #Install chrome chromium \ chromium-chromedriver \ #Install firefox #firefox \ unzip \ wget \ xvfb \ dbus \ tar \ # Install other dependencies && npm install -g nightwatch \ # -g request \ # chai \ # superagent \ # Clean up obsolete files: && rm -rf \ /tmp/* \ /root/.npm #RUN apk update -q && apk add --no-cache xvfb firefox-esr dbus #ADD https://gist.github.com/elbaschid/5a91271c07bb0de7bfa6/raw/d07b4eecf02fd3341ef72753e4c5875cf137bda8/xvfb-run.sh /usr/bin/xvfb-run #RUN chmod u+x /usr/bin/xvfb-run # RUN npm install request RUN npm install chai RUN npm install superagent EXPOSE 4444 # ##Fetch the chrome drive for linux #RUN rm -rf /home/client-app/bin/chromedriver #RUN rm -rf /home/client-app/bin/geckodriver # #RUN wget -c http://chromedriver.storage.googleapis.com/2.28/chromedriver_linux64.zip -P /tmp #RUN unzip /tmp/chromedriver_linux64.zip -d /tmp #RUN chmod +x /tmp/chromedriver #RUN mv -f /tmp/chromedriver /home/client-app/bin/chromedriver # ##get the gecko driver for linux #RUN wget https://github.com/mozilla/geckodriver/releases/download/v0.16.1/geckodriver-v0.16.1-linux64.tar.gz -P /tmp #RUN tar xvzf /tmp/geckodriver-v0.16.1-linux64.tar.gz -C /tmp #RUN chmod 755 /tmp/geckodriver #RUN mv -f /tmp/geckodriver /home/client-app/bin/geckodriver #CMD xvfb-run -e java -Dwebdriver.chrome.driver=./bin/chromedriver -jar ./bin/selenium-server-standalone-3.4.0.jar &; nightwatch -e chrome -t tests/*' CMD nightwatch -e chrome -t tests/loginTest.js
这是我的nightwatchJS json文件，指定主机（URL为隐私更改）
{ "src_folders" : ["./tests"], "output_folder" : "./reports", "custom_commands_path" : "./custom-commands", "page_objects_path" : "", "custom_assertions_path" : "", "globals_path" : "./globals.js", "live_output" : false, "parallel_process_delay" : 10, "disable_colors": false, "test_workers" : true, "selenium" : { "start_process" : false, "server_path" : "./bin/selenium-server-standalone-3.4.0.jar", "log_path" : "", "host" : "127.0.0.1", "port" : 4444, "cli_args" : { "webdriver.gecko.driver" : "./bin/geckodriver", "webdriver.chrome.driver" : "./bin/chromedriver", "webdriver.ie.driver" : "./bin/IEDriverServer.exe" } }, "test_settings" : { "default" : { "launch_url" : "https://google.com", "selenium_host" : "hub", "selenium_port" : 4444, "silent" : true, "disable_colors": false, "screenshots" : { "enabled" : true, "path" : "./screenshots" }, "desiredCapabilities" : { "browserName" : "firefox", "javascriptEnabled" : true, "acceptSslCerts" : true, "acceptInsecureCerts" : true, "applicationCacheEnabled" : true } }, "chrome" : { "launch_url" : "https://google.com/", "selenium_host" : "0.0.0.0", "selenium_post" : 4444, "disable_colors" : false, "screenshots" : { "enabled" : false, "path" : "" }, "desiredCapabilities" : { "browserName" : "chrome", "javascriptEnabled" : true, "acceptSslCerts" : true, "acceptInsecureCerts" : true, "chromeOptions": { "args": [ "--no-sandbox"] } } }, "IE" : { "launch_url" : "https://google.com/", "selenium_host" : "fakeURLFORSTACK.com", "selenium_post" : 4444, "disable_colors" : false, "screenshots" : { "enabled" : false, "path" : "" }, "desiredCapabilities" : { "browserName" : "internet explorer", "javascriptEnabled" : true, "acceptSslCerts" : true, "acceptInsecureCerts" : true } }, "saucelabs" : { "selenium_host" : "ondemand.saucelabs.com", "selenium_port" : 80, "username" : "${SAUCE_USERNAME}", "access_key" : "${SAUCE_ACCESS_KEY}", "use_ssl" : false, "silent" : true, "output" : true, "screenshots" : { "enabled" : false, "on_failure" : true, "path" : "" }, "desiredCapabilities": { "name" : "test-example", "browserName": "firefox" }, "globals" : { "myGlobal" : "some_sauce_global" }, "selenium" : { "start_process" : false } }, "phantomjs" : { "desiredCapabilities" : { "browserName" : "phantomjs", "javascriptEnabled" : true, "acceptSslCerts" : true, "acceptInsecureCerts" : true, "phantomjs.binary.path" : "phantomjs" } }, "browserstack" : { "selenium" : { "start_process" : false }, "selenium_host" : "hub.browserstack.com", "selenium_port" : 80, "silent" : true, "desiredCapabilities": { "name" : "test-example", "browserName": "firefox", "browserstack.user" : "...", "browserstack.key" : "..." } }, "testingbot" : { "selenium_host" : "hub.testingbot.com", "selenium_port" : 80, "apiKey" : "${TB_KEY}", "apiSecret" : "${TB_SECRET}", "silent" : true, "output" : true, "screenshots" : { "enabled" : false, "on_failure" : true, "path" : "" }, "desiredCapabilities": { "name" : "test-example", "browserName": "firefox" }, "selenium" : { "start_process" : false } } } }
我怎样才能允许我的夜间testing运行在一个docker集装箱利用运行在端口4444另一个selenium主机？
每个容器都有自己的networking。 每个人都有eth0和lo （本地主机）接口，住在docker的networking中。
所以，你的selenium不在Nighwatch应用程序的本地主机。 这是可用的：
selenium:4444
该主机名被翻译成对应于selenium容器的正确IP。 因此，请将您的脚本和configuration调整为该信息。
您可以使用以下方式查找并检查泊坞窗networking：
docker network ls docker network inspect <network-id>