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Exemple de fichier Dockerfile pour une image Liberty Network Deployment

Vous pouvez utiliser cet exemple Dockerfile pour créer une image Liberty Network Deployment. L'image Docker contient un script joinMember qui rattache à la collectivité le serveur membre dans le conteneur Docker. L'image Docker contient également un script removeMember qui supprime de la collectivité le serveur membre dans le conteneur Docker.

Dockerfile

Cet exemple de fichier Dokerfile peut créer une image Liberty Network Deployment. L'image disponible sur Docker Hub ne peut pas accéder aux fonctions Liberty Network Deployment, telles que scalingMember-1.0. Utilisez ce fichier pour créer une image Liberty Network Deployment. Vous pouvez utiliser la dernière ligne pour copier une application afin de l'utiliser sur l'image Docker.

# 
# 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/

Script joinMember

Le script joinMember de l'image Docker rattache à un contrôleur de collectivité le serveur membre dans le conteneur Docker :
#!/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

Script removeMember

Le script removeMember de l'image Docker supprime de la collectivité le serveur membre dans l'image Docker :
#!/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

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Nom du fichier : rwlp_deployservice_docker_nd_example.html