===== DevOps Practice from Alibaba Cloud =====

==== Install Jekins ====
[[jenkins_debian_10|steps here]]

==== Install Maven ====
[[install_maven_debian_10|steps here]]

==== Install Docker ====
[[docker_debian|steps here]]

==== Configuration ====
=== sudo for jenkins user ===
<code>
usermod -aG sudo jenkins
</code>
Modify sudoers with visudo as follows:
<code>
%sudo   ALL=(ALL:ALL) NOPASSWD: ALL
</code>

=== create build path ===
<code>
mkdir /var/lib/jenkins/build
chown jenkins.jenkins /var/lib/jenkins/build
</code>

=== Jenkins configuration ===
Enter to web page and follow steps as show on images:

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<code>
/usr/lib/jvm/java-11-openjdk-amd64/
</code>
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<code>
/usr/share/maven/
</code>
Create a new Freestyle project job:

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<code>
#Variables
JENKINS_WAR_HOME='/var/lib/jenkins/workspace/alibabadevops/target'
DOCKERFILE_HOME='/var/lib/jenkins/build'
HARBOR_IP='registry-intl.cn-hongkong.aliyuncs.com/coursedevops/r_coursedevops'
REPOSITORIES='coursedevops/r_coursedevops'
HARBOR_USER=''
HARBOR_USER_PASSWD=''

#Copy the newest war to docker-file directory
\cp -f ${JENKINS_WAR_HOME}/MyMavenApp.war ${DOCKERFILE_HOME}/MyMavenApp.war

#Delete image early version
sudo docker login -u ${HARBOR_USER} -p ${HARBOR_USER_PASSWD} ${HARBOR_IP}
IMAGE_ID=sudo docker images | grep ${REPOSITORIES}| awk '{print $3}'
if [ -n "{IMAGE_ID}"];then
sudo docker rm ${IMAGE_ID}
fi

#Build image
cd ${DOCKERFILE_HOME}
TAG=$(date +%Y%m%d-%H%M%s)
sudo docker build -t ${HARBOR_IP}/${REPOSITORIES}:${TAG} .

#Push to the harbor registry
sudo docker push ${HARBOR_IP}/${REPOSITORIES}:${TAG}
</code>

==== Install Terraform ====
[[terraform_debian|steps here]]