Deploy in Tomcat using maven

pom.xml

<build>
		<plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <server>tomcat</server>
                    <path>/hello-webapp</path>
                    <update>true</update>
                </configuration>
            </plugin>
		</plugins>
</build>

settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
  <servers>
    <server>
      <id>tomcat</id>
      <username>deploy</username>
      <password>123456</password>
    </server>
  </servers>
</settings>

tomcat_users.xml

<?xml version='1.0' encoding='utf-8'?>    
<tomcat-users>
      <role rolename="manager-script"/>
      <user username="deploy" password="123456" roles="manager-script"/>
</tomcat-users>