Spring boot application wont start in openshift - spring-boot

Question

I created openshift project with DIY cartridge, added postresql for DB.. now I pushed sources to cloud, but I'm getting error like the guy here (but he was not using springboot): I can't start tomcat 7 server on linux openshift - Failed to start end point associated with ProtocolHandler ["http-nio-12345"]
Failed to start end point associated with ProtocolHandler
It's obvious that if I run the app twice the error message 'Failed to start end point associated with ProtocolHandler' appears. I tried rhc app-tidy, restarted APP via openshift interface, i made change, pushed to cloud, build success, but the message appeared again. How to stop the app so that I can run it properly? Didn't the app being stopped after the restart I performed?
UPDATE: Have I chosen the right steps? (with DIY cartridge), do You have a simple (& working) guide how to deploy such an app to openshift? I tried few I found over the net, but none of them worked :(

Answer 1

Here is steps I follow using DIY cartridge, hope this would help
Go to home directory of project perform following tasks
Create Settings.xml and refer maven repo by updating settings.xml as shown in following xml snippet below. And also add the file to git repo
<settings>
<localRepository>${OPENSHIFT_DATA_DIR}/m2/repository</localRepository>
</settings>
Got to .openshift directory and delete all the files except action_hooks
Go to action_hooks and perform following task
i. Delete README.md
ii. Create deploy file (note the file extension while create should not be txt) and add following code snippet
(It basically creates and downloads and sets up java8 and maven
#!/bin/bash
set -x
if [ ! -d $OPENSHIFT_DATA_DIR/m2/repository ]
then
cd $OPENSHIFT_DATA_DIR
mkdir m2/repository
fi
if [ ! -d $OPENSHIFT_DATA_DIR/jdk1.8.0_51 ]
then
cd $OPENSHIFT_DATA_DIR
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u77-b03/jdk-8u77-linux-x64.tar.gz
tar xvf *.tar.gz
rm -f *.tar.gz
fi
if [ ! -d $OPENSHIFT_DATA_DIR/apache-maven-3.3.3 ]
then
cd $OPENSHIFT_DATA_DIR
wget http://mirror.fibergrid.in/apache/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz
tar xvf *.tar.gz
rm -f *.tar.gz
fi
cd $OPENSHIFT_REPO_DIR
export M2=$OPENSHIFT_DATA_DIR/apache-maven-3.3.3/bin
export MAVEN_OPTS="-Xms500m -Xmx500m"
export JAVA_HOME=$OPENSHIFT_DATA_DIR/jdk1.8.0_51
export PATH=$JAVA_HOME/bin:$M2:$PATH
mvn -s settings.xml clean install
iii. Add the deploy file to git
iv. Edit start file with following snippet.
#!/bin/bash
source $OPENSHIFT_CARTRIDGE_SDK_BASH
set -x
export JAVA_HOME=$OPENSHIFT_DATA_DIR/jdk1.8.0_51
export PATH=$JAVA_HOME/bin:$PATH
cd $OPENSHIFT_REPO_DIR
nohup java –Xms500m –Xmx500m -jar target/*.jar --server.port=${OPENSHIFT_DIY_PORT} --server.address=${OPENSHIFT_DIY_IP} &
v. Edit stop with following code snippet
#!/bin/bash
source $OPENSHIFT_CARTRIDGE_SDK_BASH
PID=$(ps -ef | grep java.*\.jar | grep -v grep | awk '{ print $2 }')
if [ -z "$PID" ]
then
client_result "Application is already stopped"
else
kill $PID
fi
vi. Make deploy file executable (Note: This is very important and its common mistake, if not executable your project will not start)
Commit the changes along with your maven src and pom.xml your application should automatically start once the commit is done, Note: for first time it will take time as it needs to download maven repo.
For debuging purpose, its better to add logback.xml in your class path(src/main/resources)
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<property name="LOG_FILE" value="${OPENSHIFT_LOG_DIR}/kp-apps.log" />
<include resource="org/springframework/boot/logging/logback/base.xml" />
<logger name="org.springframework.web" level="DEBUG" />