自动化部署java maven项目到多个目标主机的Shell脚本
#!/bin/bash# Name: doDeploy.sh
#Execute this shell script to deploy Java projects built by Maven automatically on remote hosts.
# debug option
DEBUG=false
#DEBUG=true
if $DEBUG ; then
old_PS4=$PS4
# export PS4='+${BASH_SOURCE}:${LINENO}:${FUNCNAME}: '
export PS4='+${LINENO}: ${FUNCNAME}: ' # if there is only one bash script, do not display ${BASH_SOURCE}
_XTRACE_FUNCTIONS=$(set +o | grep xtrace)
set -o xtrace
fi
# define user friendly messages
header="
Function: Execute this shell script to deploy Java projects built by Maven automatically on remote hosts.
License: Open source software
"
# user defined variables
# Where to get source code
user_defined_project_clone_depends="ssh://git@git.huntor.cn:18082/core/business-service-base.git"
user_defined_project_clone="ssh://git@git.huntor.cn:18082/core/business-service-core.git"
# TODO(Guodong Ding) do deploy once time with multi-hosts support, try using 'for + deploy'
user_defined_deploy_target_host_ip="10.6.28.135" # this is a mandatory field, and must be same as the first ip in $user_defined_deploy_targets_host_ip_list
user_defined_deploy_targets_host_ip_list="10.6.28.135 10.6.28.28"
#user_defined_project_top_directory_to_target_host="/data/docker/business-service/bs-core-01"
#user_defined_docker_container_name="bs-core-01"
user_defined_project_top_directory_to_target_host="/tmp/deploy_test_target"
user_defined_docker_container_name="testcontainer" # if you using a docker container other than a startup script located in sourcecode/bin/startup.sh, then set this to docker container name
user_defined_project_conf_directory="backup" # if you do NOT want to use configurations from deploy target, you should set this variable to where pointed to config files
user_defined_skip_check_network_and_resolver="true" # if system administrator disable ICMP protocol, set this any content but not null
# Setting how many days do you want save old releases, default is 10 days
save_old_releases_for_days=10
# end define variables
# pretreatment
test -z ${user_defined_project_clone_depends} || project_clone_target_depends_1="`echo ${user_defined_project_clone_depends} | awk -F '[/.]+' '{ print $(NF-1)}'`"
project_clone_target="`echo ${user_defined_project_clone} | awk -F '[/.]+' '{ print $(NF-1)}'`"
project_clone_repository_name=${project_clone_target}
deployment_mode=""
# end pretreatment
# Public header
# =============================================================================================================================
# resolve links - $0 may be a symbolic link
# learn from apache-tomcat-6.x.xx/bin/catalina.sh
PRG="$0"
while [ -h "$PRG" ]; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`/"$link"
fi
done
# Get standard environment variables
PRGDIR=`dirname "$PRG"`
# echo color function, smarter, learn from lnmp.org lnmp install.sh
function echo_r (){
# Color red: Error, Failed
[ $# -ne 1 ] && return 1
echo -e "\033[31m$1\033[0m"
}
function echo_g (){
# Color green: Success
[ $# -ne 1 ] && return 1
echo -e "\033[32m$1\033[0m"
}
function echo_y (){
# Color yellow: Warning
[ $# -ne 1 ] && return 1
echo -e "\033[33m$1\033[0m"
}
function echo_b (){
# Color blue: Debug Level 1
[ $# -ne 1 ] && return 1
echo -e "\033[34m$1\033[0m"
}
function echo_p (){
# Color purple,magenta: Debug Level 2
[ $# -ne 1 ] && return 1
echo -e "\033[35m$1\033[0m"
}
function echo_c (){
# Color cyan: friendly prompt, Level 1
[ $# -ne 1 ] && return 1
echo -e "\033[36m$1\033[0m"
}
# end echo color function, smarter
#WORKDIR="`realpath ${WORKDIR}`"
WORKDIR="`readlink -f ${PRGDIR}`"
# end public header
# =============================================================================================================================
USER="`id -un`"
LOGNAME="$USER"
if [ $UID -ne 0 ]; then
echo "WARNING: Running as a non-root user, \"$LOGNAME\". Functionality may be unavailable. Only root can use some commands or options"
fi
function command_exists() {
# which "$@" >/dev/null 2>&1
command -v "$@" >/dev/null 2>&1
}
function check_command_can_be_execute(){
[ $# -ne 1 ] && return 1
command_exists $1
}
function check_network_connectivity(){
echo_b "checking network connectivity ... "
network_address_to_check=8.8.4.4
stable_network_address_to_check=114.114.114.114
ping_count=2
ping -c ${ping_count} ${network_address_to_check} >/dev/null
retval=$?
if [ ${retval} -ne 0 ] ; then
if ping -c ${ping_count} ${stable_network_address_to_check} >/dev/null;then
echo_g "Network to $stable_network_address_to_check succeed! "
echo_y "Note: network to $network_address_to_check failed once! maybe just some packages loss."
elif ! ip route | grep default >/dev/null; then
echo_r "Network is unreachable, gateway is not set."
exit 1
elif ! ping -c2 $(ip route | awk '/default/ {print $3}') >/dev/null; then
echo_r "Network is unreachable, gateway is unreachable."
exit 1
else
echo_r "Network is blocked! "
exit 1
fi
elif [ ${retval} -eq 0 ]; then
echo_g "Check network connectivity passed! "
echo
fi
}
function check_name_resolve(){
echo_b "checking DNS name resolve ... "
target_name_to_resolve="github.com"
stable_target_name_to_resolve="www.aliyun.com"
ping_count=1
if ! ping-c${ping_count} ${target_name_to_resolve} >/dev/null; then
echo_y "Name lookup failed for $target_name_to_resolve with $ping_count times "
if ping-c${ping_count} ${stable_target_name_to_resolve} >/dev/null; then
echo_g "Name lookup success for $stable_target_name_to_resolve with $ping_count times "
fi
eval_md5sum_of_nameserver_config="`md5sum /etc/resolv.conf | awk '{ print $1 }'`"
if test ${eval_md5sum_of_nameserver_config} = "674ea91675cdfac353bffbf49dc593c3"; then
echo_y "Nameserver config file is validated, but name lookup failed for $target_name_to_resolve with $ping_count times"
return 0
fi
[ -f /etc/resolv.conf ] && cp /etc/resolv.conf /etc/resolv.conf_$(date +%Y%m%d%H%M%S)~
cat >/etc/resolv.conf /var/www/my_app_name/releases/20150120114500/
# ├── releases
# │ ├── 20150080072500
# │ ├── 20150090083000
# │ ├── 20150100093500
# │ ├── 20150110104000
# │ └── 20150120114500
# ├── repo
# │ └──
# ├── revisions.log
# └── shared
# └──
# current is a symlink pointing to the latest release. This symlink is updated at the end of a successful deployment. If the deployment fails in any step the current symlink still points to the old release.
# releases holds all deployments in a timestamped folder. These folders are the target of the current symlink.
# repo holds the version control system configured. In case of a git repository the content will be a raw git repository (e.g. objects, refs, etc.).
# revisions.log is used to log every deploy or rollback. Each entry is timestamped and the executing user (username from local machine) is listed. Depending on your VCS data like branch names or revision numbers are listed as well.
# shared contains the linked_files and linked_dirs which are symlinked into each release. This data persists across deployments and releases. It should be used for things like database configuration files and static and persistent user storage handed over from one release to the next.
# The application is completely contained within the path of :deploy_to. If you plan on deploying multiple applications to the same server, simply choose a different :deploy_to path.
# Check directories for deploy
[ ! -d ${WORKDIR}/release ] && mkdir ${WORKDIR}/release
[ ! -d ${WORKDIR}/repository ] && mkdir ${WORKDIR}/repository
[ ! -d ${WORKDIR}/share ] && mkdir ${WORKDIR}/share
# end directories structure
# Additional directories structure for full deploy operation
# for backup remote host config file
[ ! -d ${WORKDIR}/backup ] && mkdir ${WORKDIR}/backup
# set a directories structure lock
touch ${WORKDIR}/.capistrano_ds_lock
echo_g "Set directory structure successfully! "
echo
}
function clean_old_releases(){
echo_b "Clean old releases... "
save_days=${save_old_releases_for_days:-10}
if [ ! -d ${WORKDIR}/release ]; then
echo_b "Can NOT find release directory, skipping . "
return
fi
need_clean=$(find ${WORKDIR}/release -mtime +${save_days} -exec ls '{}' \;)
if [ ! -z ${need_clean} ]; then
echo_c "Expired releases found and will be removed from project! "
find ${WORKDIR}/release -mtime +${save_days} -exec rm -rf '{}' \;
if [ $? -eq 0 ]; then
echo_g "Expired releases have removed from project! "
else
echo_r "Can NOT remove expired releases, please feel free to alter to administrators. "
fi
else
echo_g "All releases are not expired, skipping. "
fi
}
function clean_old_logs(){
echo_b "Clean old logs... "
save_days=${save_old_releases_for_days:-10}
need_clean=$(find ${WORKDIR}/ -name "*.log" -mtime +${save_days} -exec ls '{}' \;)
if [ ! -z ${need_clean} ]; then
echo_c "Expired releases found and will be removed from project! "
find -L ${WORKDIR}/ -maxdepth 1 -name "*.log" -a ! -name "^." -mtime +${save_days} -exec rm -rf '{}' \;
if [ $? -eq 0 ]; then
echo_g "Expired logs have removed from project! "
else
echo_r "Can NOT remove expired logs, please feel free to alter to administrators. "
fi
else
echo_g "All logs are not expired, skipping. "
fi
}
# git_project_clone repository branch
function git_project_clone(){
set -o errexit
[ $# -ge 1 ] && project_clone_repository="$1"
project_clone_repository_name="`echo ${project_clone_repository} | awk -F '[/.]+' '{ print $(NF-1)}'`"
project_clone_directory=${WORKDIR}/repository/${project_clone_repository_name}
if test -n $2; then
branch="$2"
else
branch="develop"
fi
if test ! -d ${project_clone_directory}; then
echo_b "git clone from $project_clone_repository"
# git clone git@github.com:name/app.git -b master
git clone ${project_clone_repository} ${project_clone_directory} >>${WORKDIR}/git_$(date +%Y%m%d)_$$.log 2>&1
# TODO(Guodong Ding) get branch names or revision numbers from VCS data
cd ${project_clone_directory}
git checkout ${branch} >>${WORKDIR}/git_$(date +%Y%m%d)_$$.log 2>&1
cd ..
echo_g "git clone from $project_clone_repository successfully! "
else
echo_b "git pull from $project_clone_repository"
cd ${project_clone_directory}
git pull >>${WORKDIR}/git_$(date +%Y%m%d)_$$.log 2>&1
git checkout ${branch} >>${WORKDIR}/git_$(date +%Y%m%d)_$$.log 2>&1
# TODO(Guodong Ding) get branch names or revision numbers from VCS data
cd ..
echo_g "git pull from $project_clone_repository successfully! "
fi
set +o errexit
}
function maven_build_project_deprecated(){
set -o errexit
echo_b "Do mvn build java project... "
check_command_can_be_execute mvn
[ $# -ge 1 ] && project_clone_repository="$1"
project_clone_repository_name="`echo ${project_clone_repository} | awk -F '[/.]+' '{ print $(NF-1)}'`"
project_clone_directory=${WORKDIR}/repository/${project_clone_repository_name}
cd ${project_clone_directory}
mvn install >>${WORKDIR}/mvn_build_$(date +%Y%m%d)_$$.log 2>&1
mvn clean package >>${WORKDIR}/mvn_build_$(date +%Y%m%d)_$$.log 2>&1
cd ..
echo_g "Do mvn build java project finished with exit code 0! "
set +o errexit
}
function maven_build_project(){
echo_b "Do mvn build java project for `echo $1 | awk -F '[/.]+' '{ print $(NF-1)}'`... "
check_command_can_be_execute mvn
[ $# -ge 1 ] && project_clone_repository="$1"
project_clone_repository_name="`echo ${project_clone_repository} | awk -F '[/.]+' '{ print $(NF-1)}'`"
project_clone_directory=${WORKDIR}/repository/${project_clone_repository_name}
cd ${project_clone_directory}
mvn install >>${WORKDIR}/mvn_build_$(date +%Y%m%d)_$$.log 2>&1
retval=$?
if [ ${retval} -ne 0 ] ; then
echo_r "mvn install failed! More details refer to ${WORKDIR}/mvn_build_$(date +%Y%m%d)_$$.log"
exit 1
else
echo_g "mvn install for ${project_clone_repository_name} successfully! "
fi
mvn clean package >>${WORKDIR}/mvn_build_$(date +%Y%m%d)_$$.log 2>&1
retval=$?
if [ ${retval} -ne 0 ] ; then
echo_r "mvn clean package for ${project_clone_repository_name} failed! More details refer to ${WORKDIR}/mvn_build_$(date +%Y%m%d)_$$.log"
exit 1
else
echo_g "mvn clean package for ${project_clone_repository_name} successfully! "
fi
cd ${WORKDIR}
echo_g "Do mvn build java project finished for ${project_clone_repository_name} with exit code 0! "
echo
}
# ssh_execute_command_on_remote_host hostname command
function ssh_execute_command_on_remote_host(){
[ $# -ne 2 ] && return 1
ssh -i /etc/ssh/ssh_host_rsa_key -p 22 -oStrictHostKeyChecking=no root@$1 "$2" >>${WORKDIR}/ssh_command_$(date +%Y%m%d)_$$.log 2>&1
retval=$?
if [ ${retval} -ne 0 ] ; then
echo_r "ssh execute command on remote host $2 failed! "
test -s ${WORKDIR}/ssh_command_$(date +%Y%m%d)_$$.log && echo_r "\tMore details refer to ${WORKDIR}/ssh_command_$(date +%Y%m%d)_$$.log"
return 1
else
echo_g "ssh execute command on remote host $2 successfully! "
return 0
fi
}
function restart_docker_container(){
echo_b "Restarting docker container..."
[ $# -ne 2 ] && return 1
# TODO(Guodong Ding) if we need restart more related docker container
local user_defined_docker_container_name=""
local remote_host_ip=""
test -n $1 && remote_host_ip="$1"
test -n $1 && user_defined_docker_container_name="$2"
ssh_execute_command_on_remote_host "$remote_host_ip" "docker restart $user_defined_docker_container_name"
retval=$?
if [ ${retval} -ne 0 ] ; then
echo_r "restart docker container for$user_defined_docker_container_name on $remote_host_ip failed! "
exit 1
else
echo_g "restart docker container for $user_defined_docker_container_name on $remote_host_ip successfully! "
return 0
fi
}
# scp_local_files_to_remote_host local_path remote_hostname remote_path
function scp_local_files_to_remote_host(){
[ $# -ne 3 ] && return 1
[ ! -d $1 -a ! -f $1 ] && return 1
# check_ssh_can_be_connect $2
scp -i /etc/ssh/ssh_host_rsa_key -P 22 -oStrictHostKeyChecking=no -rp $1 root@$2:$3 >/dev/null 2>&1
retval=$?
if [ ${retval} -ne 0 ] ; then
echo_r "scp local files to remote host failed! "
exit 1
else
echo_g "scp local files to remote host successfully! "
fi
}
# scp_remote_files_to_local_host remote_hostname remote_path local_path
function scp_remote_files_to_local_host(){
[ $# -ne 3 ] && return 1
# check_ssh_can_be_connect $1
scp -i /etc/ssh/ssh_host_rsa_key -P 22 -oStrictHostKeyChecking=no -rp root@$1:$2 $3 >/dev/null 2>&1
retval=$?
if [ ${retval} -ne 0 ] ; then
echo_r "scp remote files to local host failed! "
exit 1
else
echo_g "scp remote files to local host successfully! "
fi
}
function backup_single_file(){
set -o errexit
if [ "$#" -ne 1 ]; then
return 1
fi
backup_filename_origin="$1"
operation_date_time="`date +"%Y%m%d%H%M%S"`"
backup_filename_prefix=".backup_"
backup_filename_suffix="_origin_$operation_date_time~"
backup_filename_target="$backup_filename_prefix$backup_filename_origin$backup_filename_suffix"
test -f $backup_filename_origin && cp $backup_filename_origin $backup_filename_target
set +o errexit
}
# Function description: backup files
# Note: accept $@ parameters
function backup_files(){
# TODO(Guodong Ding) improvements here
set -o errexit
if [ $# -eq 0 ]; then
return 1
fi
file_list=$@
operation_date_time="_`date +"%Y%m%d%H%M%S"`"
log_filename=".log_$$_${RANDOM}"
log_filename_full_path=/tmp/$log_filename
touch $log_filename_full_path
old_IFS=$IFS
IFS=" "
for file in $file_list;do
real_file=$(realpath $file)
[ -f $real_file ] && cp $real_file $file$operation_date_time~
[ -f $log_filename_full_path ] && echo "\mv -f $file$operation_date_time~ $file" >>$log_filename_full_path
done
IFS="$old_IFS"
set +o errexit
return 0
}
# Function description:
function rollback_files(){
# TODO(Guodong Ding) improvements here
[ -f $log_filename_full_path ] && . $log_filename_full_path
\rm -f $log_filename_full_path
exit 2
}
function backup_directories(){
# TODO(Guodong Ding) continue here
if [ $# -ne 1 ]; then
return 1
fi
backup_filename_origin="$1"
operation_date_time="`date +"%Y%m%d%H%M%S"`"
backup_filename_prefix=".backup_"
backup_filename_suffix="_origin_$operation_date_time~"
backup_filename_target="$backup_filename_prefix$backup_filename_origin$backup_filename_suffix"
test -f $backup_filename_origin && cp -r $backup_filename_origin $backup_filename_target
}
function rollback_directories(){
# TODO(Guodong Ding) continue here
return
}
#
function backup_remote_host_config_files(){
# TODO(Guodong Ding) did not throw a exception when first deploy and test -z "$user_defined_project_conf_directory"
echo_b "backup remote host config files..."
# backup operation only executed once time, using '$0 backup_manual' backup new configuration files.
# if ${WORKDIR}/backup is not empty then return 0 to exit
if [ "$(ls -A ${WORKDIR}/backup)" ]; then
[ -f ${WORKDIR}/backup/.backup_operation_once.log ] && backup_operation="`cat ${WORKDIR}/backup/.backup_operation_once.log`"
echo_g "Backup remote host config files operation had been done, $backup_operation, now skipping ... "
return 0
fi
# TODO(Guodong Ding) if $user_defined_project_conf_directory is empty and remote host target directory is empty(first deploy), will cause exit with 1
ssh_execute_command_on_remote_host $user_defined_deploy_target_host_ip "test \"\$(ls -A $user_defined_project_top_directory_to_target_host 2>/dev/null)\""
if test $? -eq 0; then
scp_remote_files_to_local_host ${user_defined_deploy_target_host_ip} ${user_defined_project_top_directory_to_target_host}/* ${WORKDIR}/backup
# get config files
[ "$(ls -A ${WORKDIR}/backup)" ] && find ${WORKDIR}/backup/. -type f ! -name . -a ! -name '*.xml*' -a ! -name '*.properties*' -a ! -name '*.version*' -exec rm -f -- '{}' \;
# remove empty directory, 'for + rmdir'
find ${WORKDIR}/backup/. -empty -type d -delete
# TODO(Guodong Ding) improvements here
echo_g "backup remote host config files finished."
echo "`date +%Y%m%d`" > ${WORKDIR}/backup/.backup_operation_once.log
else
echo_y "This maybe first time to deploy or variable 'user_defined_project_conf_directory' is not defined! "
fi
}
function rollback_remote_host_config_files(){
echo_b "rollback remote host config files..."
#scp_local_files_to_remote_host ${WORKDIR}/backup ${user_defined_deploy_target_host_ip} ${user_defined_project_top_directory_to_target_host}
saved_IFS=$IFS
IFS=' '
cd ${WORKDIR}/current
for file in ${WORKDIR}/backup/*;do
scp_local_files_to_remote_host ${file} ${user_defined_deploy_target_host_ip} ${user_defined_project_top_directory_to_target_host}
# override all configuration files to current
\cp -r ${file} ${WORKDIR}/current
done
cd ${WORKDIR}
IFS=${saved_IFS}
# TODO(Guodong Ding) if save remote host config files, if there are no changes on config files
# some ops
# TODO(Guodong Ding) improvements here
echo_g "rollback remote host config files finished."
}
function make_current_workable_source(){
# check a directories lock, Note: this is redundant
if [[ ! -f ${WORKDIR}/.capistrano_ds_lock ]]; then
setDirectoryStructureOnLocalHost
fi
clean_old_releases
clean_old_logs
# do dependencies checking
if test ! -z $user_defined_skip_check_network_and_resolver; then
echo_g "skipping checking network connectivity and name resolve."
else
check_network_connectivity
check_name_resolve
fi
check_other_dependencies
# do core job
# TODO(Guodong Ding) if we need a git_project_clone "$user_defined_project_clone_depends" here using auto judgment statement
test -z ${user_defined_project_clone_depends} || git_project_clone "$user_defined_project_clone_depends"
git_project_clone "$user_defined_project_clone"
test -z ${user_defined_project_clone_depends} || maven_build_project "$user_defined_project_clone_depends"
maven_build_project "$user_defined_project_clone"
cd ${WORKDIR}
# links_target_directory_to_current
# Make directory to release directory
if test ! -d ${WORKDIR}/release -o ! -d ${WORKDIR}/share; then
echo_r "capistrano directory structure is broken, make sure the file .capistrano_ds_lock is deleted before a new deploy! "
# test -f ${WORKDIR}/.capistrano_ds_lock && \rm -rf${WORKDIR}/.capistrano_ds_lock
exit 1
fi
new_release_just_created="$WORKDIR/release/$(date +%Y%m%d%H%M%S)"
[ ! -d ${new_release_just_created} ] && mkdir ${new_release_just_created}
[ -d ${WORKDIR}/repository/${project_clone_repository_name}/target/${project_clone_repository_name}/ ] && \
\cp -rf ${WORKDIR}/repository/${project_clone_repository_name}/target/${project_clone_repository_name}/* ${new_release_just_created}
# Make source code symbolic link to current
( [ -f ${WORKDIR}/current ] || [ -d ${WORKDIR}/current ] ) && rm -rf ${WORKDIR}/current
ln -s ${new_release_just_created} ${WORKDIR}/current
# Move conf and logs directives from release to share if found
[ -d ${WORKDIR}/release/conf ] && mv ${WORKDIR}/release/conf ${WORKDIR}/share/conf
[ -d ${WORKDIR}/release/logs ] && mv ${WORKDIR}/release/logs ${WORKDIR}/share/logs
# Make conf and logs symbolic link to current
[ -d ${WORKDIR}/share/conf ] && ln -s ${WORKDIR}/share/conf ${WORKDIR}/current/conf
[ -d ${WORKDIR}/share/logs ] && ln -s ${WORKDIR}/share/logs ${WORKDIR}/current/logs
}
# distribute current workable files to remote host
function deploy() {
# do make_current_workable_source before deploy every time
make_current_workable_source
echo_b "Do deploy on $user_defined_deploy_target_host_ip ..."
# backup remote host config files
[ -z ${user_defined_project_conf_directory} ] && backup_remote_host_config_files
saved_IFS=$IFS
IFS=' '
cd ${WORKDIR}/current
for file in ${WORKDIR}/current/*;do
scp_local_files_to_remote_host ${file} ${user_defined_deploy_target_host_ip} ${user_defined_project_top_directory_to_target_host}
done
cd ${WORKDIR}
IFS=${saved_IFS}
# rollback remote host config files
[ -z ${user_defined_project_conf_directory} ] && rollback_remote_host_config_files
if test ! -z "${user_defined_project_conf_directory}" -a -d ${user_defined_project_conf_directory} ; then
saved_IFS=$IFS
IFS=' '
cd ${WORKDIR}/current
for file in ${user_defined_project_conf_directory}/*;do
scp_local_files_to_remote_host ${file} ${user_defined_deploy_target_host_ip} ${user_defined_project_top_directory_to_target_host}
# override all configuration files to current
\cp -rf $file ${WORKDIR}/current
done
cd ${WORKDIR}
IFS=${saved_IFS}
fi
# backup remote host config files to local again for next using
[ ! -z ${user_defined_project_conf_directory} ] && backup_remote_host_config_files
# Start service or validate status on remote host
if [[ -e ${WORKDIR}/current/bin/startup.sh ]]; then
ssh_execute_command_on_remote_host $user_defined_deploy_target_host_ip "$user_defined_project_top_directory_to_target_host/bin/startup.sh start"
RETVAL=$?
else
test -z ${user_defined_docker_container_name} || restart_docker_container $user_defined_deploy_target_host_ip ${user_defined_docker_container_name}
# TODO(Guodong Ding) external health check
RETVAL=$?
fi
# if started ok, then create a workable program to a file
if [[ ${RETVAL} -eq 0 ]]; then
# Note cat with eof must start at row 0, and with eof end only, such as no blank spaces, etc
cat >${WORKDIR}/share/workable_program.log ${WORKDIR}/share/workable_program.log ${WORKDIR}/share/workable_program.log ${WORKDIR}/share/workable_program.log
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