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Liberty Network Deployment 이미지의 예제 Dockerfile

Dockerfile 예제를 사용하여 Liberty Network Deployment 이미지를 작성합니다. Docker 이미지에는 Docker 컨테이너의 멤버 서버를 집합체 제어기에 참여시키는 joinMember 스크립트가 있습니다. Docker 이미지에는 집합체에서 Docker 컨테이너의 멤버 서버를 제거하는 removeMember 스크립트도 있습니다.

Dockerfile

다음 Dockerfile 예제는 Liberty Network Deployment 이미지를 작성할 수 있습니다. Docker 허브에서 사용 가능한 이미지는 scalingMember-1.0 등의 Liberty Network Deployment 기능에 액세스할 수 없습니다. Liberty Network Deployment 이미지를 작성하려면 이 파일을 사용하십시오. 마지막 행을 사용하여 Docker 이미지에 사용할 애플리케이션을 복사할 수 있습니다.

# 
# Dockerfile to create a Liberty Network Deployment image
#
# This Dockerfile assumes:
# - The collective enabling scripts (joinMember, removeMember) will be placed in
#   /opt/ibm/docker in the Docker container
# - WebSphere Liberty will be installed at /opt/ibm/wlp
# - The WebSphere Liberty server will be "defaultServer"
#   (for example, /opt/ibm/wlp/usr/servers/defaultServer)
# - The Docker container runs using --net=host so that no ports are explicitly
#   exported in this file

FROM websphere-liberty

#
# Auto-start the Liberty server with the container
#
ENTRYPOINT ["/opt/ibm/wlp/bin/server", "run", "defaultServer"]
#
#

#
# Add collective enabling scripts
#
ADD joinMember /opt/ibm/docker/
RUN chmod +x /opt/ibm/docker/joinMember
ADD removeMember /opt/ibm/docker/
RUN chmod +x /opt/ibm/docker/removeMember

#
# Update the operating system 
#
RUN apt-get update

#
# Add the additional required features
#
RUN installUtility install --acceptLicense scalingMember-1.0 clusterMember-1.0
collectiveMember-1.0

ADD server.xml /opt/ibm/wlp/usr/servers/defaultServer/

#
# Insert your application file name. This statement copies the application
# onto the Docker image.
# 
ADD application_file /opt/ibm/wlp/usr/servers/defaultServer/dropins/

joinMember 스크립트

Docker 이미지 joinMember 스크립트는 Docker 컨테이너의 멤버 서버를 집합체 제어기에 참여시킵니다.
#!/bin/bash

#
# Script to join a Liberty Docker container to a collective controller.
#
# Required: <containerName> - positional parameter that is the name 
#                             of this Docker container
#           --host - collective controller hostname
#           --port - collective controller https port
#           --user - collective controller admin user
#           --password - collective controller admin user password
#           --keystorePassword - to be used for the member keystore
#           --dockerHost - hostname of the Docker host this container resides on
#
# Optional: --clusterName - cluster name for the member configuration.  
#                           If specified, it adds the cluster and scaling 
#                           member features also.
#

# Set initial values

containerName=$1

# Parse the command line

failure="false"

if [[ -z $1 ]]; then
    # No values received
    echo "Error: no parameters specified"
    failure="true"
else
    TEMP=`getopt --long host:,port:,user:,password:,keystorePassword:,dockerHost:,clusterName:: -- "$@"`
    eval set -- "$TEMP"
    OPTIND=-1
    
    while true ; do
        case "$1" in
           --host) controllerHost=$2; shift 2;;
           --port) controllerPort=$2; shift 2;;
           --user) controllerUser=$2; shift 2;;
           --password) controllerPassword=$2; shift 2;;
           --keystorePassword) memberKeystorePassword=$2; shift 2;;
           --dockerHost) dockerHost=$2; shift 2;;
           --clusterName) clusterName=$2; shift 2;;
           *) break;;
        esac
    done

    # Validate the required parameters
    if [[ -z "$containerName" ]]; then
        echo "Error: no containerName specified, validation suspended"
        failure="true"
    fi

    # if a containerName is not specified, bash uses the 
    # 1st "--" parameter as the containerName

    if [[ $containerName == --* ]]; then
        echo "Error: no containerName specified, validation suspended"
        failure="true"
    fi
    
    # When the positional parameter containerName fails, 
    # suspend validation reporting
    
    if [[ $failure == false ]]; then
        if [[ -z "${controllerHost// }" ]]; then
            echo "Error: no host specified"
            failure="true"
        fi
        if [[ -z "${controllerPort// }" ]]; then
            echo "Error: no port specified"
            failure="true"
        fi
        if [[ -z "${controllerUser// }" ]]; then
            echo "Error: no user specified"
            failure="true"
        fi
        if [[ -z "${controllerPassword// }" ]]; then
            echo "Error: no password specified"
            failure="true"
        fi
        if [[ -z "${memberKeystorePassword// }" ]]; then
            echo "Error: no keystorePassword specified"
            failure="true"
        fi
        if [[ -z "${dockerHost// }" ]]; then
            echo "Error: no dockerHost specified"
            failure="true"
        fi
    fi
fi

if [[ $failure == false ]]; then
    # Create the env.properties file for the Liberty Docker member

    echo containerName=$containerName > /opt/ibm/docker/env.properties
    echo containerHost=$dockerHost >> /opt/ibm/docker/env.properties


    # Invoke the collective utility

    /opt/ibm/wlp/bin/collective join defaultServer --host=$controllerHost --port=$controllerPort --user=$controllerUser --password=$controllerPassword --hostName=$dockerHost --createConfigFile --keystorePassword=$memberKeystorePassword --autoAcceptCertificates --genDeployVariables


    # Build additional config dropin snippets

    if [[ $clusterName = *[!\ ]* ]]; then
        echo \<?xml version=\"1.0\" encoding=\"UTF-8\" ?\> > /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo \<server\> >> /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo $'\t'\<featureManager\> >> /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo $'\t'$'\t'\<feature\>clusterMember-1.0\</feature\> >>  /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo $'\t'$'\t'\<feature\>scalingMember-1.0\</feature\> >>  /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo $'\t'\</featureManager\> >> /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo \</server\> >> /opt/ibm/wlp/usr/servers/defaultServer/cfgfeatures.xml
        echo \<?xml version=\"1.0\" encoding=\"UTF-8\" ?\> > /opt/ibm/wlp/usr/servers/defaultServer/cluster-config.xml
        echo \<server\> >> /opt/ibm/wlp/usr/servers/defaultServer/cluster-config.xml
        echo $'\t'\<clusterMember name=\"$clusterName\" /\> >> /opt/ibm/wlp/usr/servers/defaultServer/cluster-config.xml
        echo \</server\> >> /opt/ibm/wlp/usr/servers/defaultServer/cluster-config.xml
    else
        echo "No clusterName provided, the container will not be configured as a cluster or scaling member."
    fi


    # Move config snippets to the proper location for consumption

    mkdir -p /opt/ibm/wlp/usr/servers/defaultServer/configDropins/overrides
    mv /opt/ibm/wlp/usr/servers/defaultServer/c*.xml /opt/ibm/wlp/usr/servers/defaultServer/configDropins/overrides
    if [ -f /opt/ibm/wlp/usr/servers/defaultServer/user-collective-include.xml ]
    then
        cp /opt/ibm/wlp/usr/servers/defaultServer/user-collective-include.xml /opt/ibm/wlp/usr/servers/defaultServer/configDropins/overrides
    fi
else
    # At least one required parameter was missing, 
    # notify the user of the correct syntax
    printf "Usage:  joinMember <containerName> \n\t--host <controller host> \n\t--port <controller https port> \n\t--user <controller user> \n\t--password <controller password> \n\t--keystorePassword <member keystore password> \n\t--dockerHost <hostname of the Docker host> \n\t[--clusterName <cluster name for the member>]\n"
fi

removeMember 스크립트

Docker 이미지 removeMember 스크립트는 집합체에서 Docker 컨테이너의 멤버 서버를 제거합니다.
#!/bin/bash

# Script to remove a Liberty Docker container from a collective controller.
#
# Required: <containerName> - positional parameter that is the
#                             name of this Docker container
#           --host - collective controller hostname
#           --port - collective controller https port
#           --user - collective controller admin user
#           --password - collective controller admin user password
#           --dockerHost - hostname of the Docker host this container resides on
#
#

# Set initial values

containerName=$1

# Parse the command line

failure="false"

if [[ -z $1 ]]; then
    # No values received
    echo "Error: no parameters specified"
    failure="true"
else
    TEMP=`getopt --long host:,port:,user:,password:,dockerHost:: -- "$@"`
    eval set -- "$TEMP"
    OPTIND=-1

    while true ; do
        case "$1" in
           --host) controllerHost=$2; shift 2;;
           --port) controllerPort=$2; shift 2;;
           --user) controllerUser=$2; shift 2;;
           --password) controllerPassword=$2; shift 2;;
           --dockerHost) dockerHost=$2; shift 2;;
           *) break;;
        esac
    done

    # Validate the required parameters
    if [[ -z "$containerName" ]]; then
        echo "Error: no containerName specified, validation suspended"
        failure="true"
    fi

    # if a containerName is not specified, bash uses the
    # 1st "--" parameter as the containerName

    if [[ $containerName == --* ]]; then
        echo "Error: no containerName specified, validation suspended"
        failure="true"
    fi

    # When the positional parameter containerName fails, 
    # suspend validation reporting

    if [[ $failure == false ]]; then
        if [[ -z "${controllerHost// }" ]]; then
            echo "Error: no host specified"
            failure="true"
        fi
        if [[ -z "${controllerPort// }" ]]; then
            echo "Error: no port specified"
            failure="true"
        fi
        if [[ -z "${controllerUser// }" ]]; then
            echo "Error: no user specified"
            failure="true"
        fi
        if [[ -z "${controllerPassword// }" ]]; then
            echo "Error: no password specified"
            failure="true"
        fi
        if [[ -z "${dockerHost// }" ]]; then
            echo "Error: no dockerHost specified"
            failure="true"
        fi
    fi
fi

    # Invoke the collective utility
if [[ $failure == false ]]; then

    /opt/ibm/wlp/bin/collective remove defaultServer --host=$controllerHost --port=$controllerPort --user=$controllerUser --password=$controllerPassword  --hostName=$dockerHost --autoAcceptCertificates

else
    # At least one required parameter was missing, 
    # notify the user of the correct syntax
    printf "Usage:  removeMember <containerName> \n\t--host=<controller host> \n\t--port=<controller https port> \n\t--user=<controller user> \n\t--password=<controller password> \n\t--dockerHost=<docker host> \n"
fi

주제의 유형을 표시하는 아이콘 참조 주제

파일 이름: rwlp_deployservice_docker_nd_example.html