Question

这就是事情。我有以下Dockerfile：

DOCKERFILE

FROM centos:centos7
MAINTAINER Legos
ADD epel-release-7-9.noarch.rpm /etc/extras/epel-release-7-9.noarch.rpm
RUN rpm -Uvh /etc/extras/epel-release*rpm

# Install prepare infrastructure
RUN yum -y update && \
yum -y install wget && \
yum -y install tar && \ 
yum -y install haveged && \
yum -y install rng-tools

RUN chkconfig haveged on

# Prepare environment 
ADD jdk* /opt/
WORKDIR /opt/
RUN yum localinstall -y "jdk-8u131-linux-x64.rpm"
RUN echo "1"|alternatives --config java
ENV JAVA_HOME /usr/java/jdk1.8.0_131
#ENV JAVA_OPTS "-Djava.security.egd=/dev/./urandom"

ENV CATALINA_HOME /opt/tomcat 
ENV PATH $PATH:$JAVA_HOME/bin:$CATALINA_HOME/bin:$CATALINA_HOME/scripts

# Install Tomcat
ENV TOMCAT_MAJOR 8
ENV TOMCAT_VERSION 8.5.15

RUN wget http://www-eu.apache.org/dist/tomcat/tomcat-${TOMCAT_MAJOR}/v${TOMCAT_VERSION}/bin/apache-tomcat-${TOMCAT_VERSION}.tar.gz && \
tar -xvf apache-tomcat-${TOMCAT_VERSION}.tar.gz && \
rm apache-tomcat*.tar.gz && \
mv apache-tomcat* ${CATALINA_HOME}

RUN chmod +x ${CATALINA_HOME}/bin/*sh

# Create Tomcat admin user
ADD create_admin_user.sh $CATALINA_HOME/scripts/create_admin_user.sh
ADD tomcat.sh $CATALINA_HOME/scripts/tomcat.sh

ADD webapps/gireUsuarios.war $CATALINA_HOME/webapps/gireUsuarios.war
ADD conf/tomcat-users.xml $CATALINA_HOME/conf/tomcat-users.xml
ADD conf/Catalina/localhost/manager.xml $CATALINA_HOME/conf/Catalina/localhost/manager.xml

RUN chmod +x $CATALINA_HOME/scripts/*.sh

# Create tomcat user
RUN groupadd -r tomcat && \
useradd -g tomcat -d ${CATALINA_HOME} -s /sbin/nologin  -c "Tomcat user" tomcat && \
chown -R tomcat:tomcat ${CATALINA_HOME}

WORKDIR /opt/tomcat

EXPOSE 8080 8009 8443 9100-9120 4369 80

RUN yum clean all

USER tomcat
CMD ["tomcat.sh"]

TL; DR：它是使用Tomcat 8.5和Java 1.8的CentOS 7计算机的映像。＆＃39; tomcat.sh＆＃39;只需在配置中创建用户后运行catalina.sh，所以对此没什么好说的。

事情就是这样：当我创建一个容器时，容器会在部署我传递的.war文件时冻结。我尝试了两个启动其他.war文件，结果是肯定的，我尝试在我的机器Tomcat 8.5中部署这个有问题的.war文件（一个直接开箱即用的Tomcat，只不过是添加了经理gui用户），它正在成功部署。

所以，问题是：任何想法为什么Tomcat会在Docker容器中部署期间冻结？我尝试了JAVA_OPTS = -Djava.security.egd = / dev /./ urandom解决方案，据说可以帮助解决这类事件，但它并没有起作用。建议？

Answer 1

解决了它。我在JAVA_OPTS中添加了额外的参数，并且它有效。最终的JAVA_OPTS是这样的：

Public Class Form5
    Dim CheckButton, skip_ad_button As HtmlElement
    Sub New()
        ' This call is required by the designer.
        InitializeComponent()

        ' Add any initialization after the InitializeComponent() call.
        WebBrowser1.ObjectForScripting = True
        WebBrowser1.ScriptErrorsSuppressed = True
    End Sub
    Private Sub Form5_Load(sender As Object, e As EventArgs) Handles MyBase.Load

    End Sub



    Private Sub WebBrowser1_DocumentCompleted(sender As Object, e As WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
        skip_ad_button = WebBrowser1.Document.GetElementById("skip_ad_button")
        CheckButton = WebBrowser1.Document.GetElementById("skip_ad_button")

        If Not skip_ad_button Is Nothing Then
            skip_ad_button.InnerText = "skip_ad_button" 'Replace testID by the ID you want
        End If

        If Not CheckButton Is Nothing Then
            'some code here
        End If
    End Sub


    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        WebBrowser1.Navigate("http:\\mediaads.eu/proxy")

    End Sub
End Class

启动时Tomcat在Docker容器中冻结

1 个答案: