add --prefix=/jenkins to JENKINS_ARGS in file /etc/default/jenkins :
JENKINS_ARGS="--webroot=/var/cache/$NAME/war --httpPort=$HTTP_PORT --prefix=/jenkins"
add --prefix=/jenkins to JENKINS_ARGS in file /etc/default/jenkins :
JENKINS_ARGS="--webroot=/var/cache/$NAME/war --httpPort=$HTTP_PORT --prefix=/jenkins"