

Liberty Network Deployment 映像檔的 Dockerfile 範例
使用 Dockerfile 範例來建立 Liberty Network Deployment 映像檔。Docker 映像檔有 joinMember Script,可將 Docker 儲存器中的成員伺服器加入群體控制器。 Docker 映像檔還有 removeMember Script,可將 Docker 儲存器中的成員伺服器從群體移除。
Dockerfile
下列 Dockerfile 範例可以建立 Liberty Network Deployment 映像檔。Docker Hub 上提供的映像檔無法存取 Liberty Network Deployment 特性,例如 scalingMember-1.0。請使用這個檔案來建立 Liberty Network Deployment 映像檔。您可以使用最後一行,將要使用的應用程式複製到 Docker 映像檔。
#
# 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 Script
Docker 映像檔 joinMember Script 可將 Docker 儲存器中的成員伺服器加入群體控制器:#!/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 Script
Docker 映像檔 removeMember Script 可將 Docker 儲存器中的成員伺服器從群體移除:#!/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