linux as a daemon process is running under tomcat

 

  If you want tomcat under linux at boot time from the start, you can start writing code to / etc / rc.local inside. However, in this case, tomcat will be run with root privileges, which is unsafe. Therefore, finding ways to allow non-privileged identity tomcat run as a daemon.  

 

    

 

  To tomcat as a daemon running linux, you need commons-daemon project jsvc tool, tomcat's bin directory already comes with this tool source.  

 

    

 

  Unzip commons-daemon-native.tar.gz, enter the unix directory, and then configure. configure, you need to specify the jdk path or in the current environment there JAVA_HOME variable.  

 

    

 

  The next time the make the following error may occur:  

 

  

   

    

ar: libservice.a: Malformed archive 
make[1]: *** [libservice.a] Error 1

   

  

 

 

  This is a known bug:  

 

  

   

    

The file bin/commons-daemon-native.tar.gz contains dirty (already compiled) 
code. On some systems this causes "make" to return the following error: 
ar: libservice.a: Malformed archive 
The solution is to run "make clean" before running "make". 
I believe that "make clean" should be run before creating the tgz file, so that 
there are no compiled/generated files laying around.

   

  

 

 

  make later get jsvc file to the tomcat's bin directory. Also in the native directory has a Tomcat5.sh, for tomcat since the launch of a template, we can modify it to meet the requirements to get a quick start-up files. Here, I will change it to the following:  

 

  

   

    

#!/bin/sh 
############################################################################## 
# 
# Licensed to the Apache Software Foundation (ASF) under one or more 
# contributor license agreements.  See the NOTICE file distributed with 
# this work for additional information regarding copyright ownership. 
# The ASF licenses this file to You under the Apache License, Version 2.0 
# (the "License"); you may not use this file except in compliance with 
# the License.  You may obtain a copy of the License at 
# 
#     http://www.apache.org/licenses/LICENSE-2.0 
# 
# Unless required by applicable law or agreed to in writing, software 
# distributed under the License is distributed on an "AS IS" BASIS, 
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
# See the License for the specific language governing permissions and 
# limitations under the License. 
############################################################################## 
# 
# Small shell script to show how to start/stop Tomcat using jsvc 
# If you want to have Tomcat running on port 80 please modify the server.xml 
# file: 
# 
#    <!-- Define a non-SSL HTTP/1.1 Connector on port 80 --> 
#    <Connector className="org.apache.catalina.connector.http.HttpConnector" 
#               port="80" minProcessors="5" maxProcessors="75" 
#               enableLookups="true" redirectPort="8443" 
#               acceptCount="10" debug="0" connectionTimeout="60000"/> 
# 
# That is for Tomcat-5.0.x (Apache Tomcat/5.0) 
# 
# Adapt the following lines to your configuration 
JAVA_HOME=/usr/local/sun-java6-jdk 
CATALINA_HOME=/usr/local/apache-tomcat-6 
DAEMON_HOME=$CATALINA_HOME 
TOMCAT_USER=tomcat6 
 
# for multi instances adapt those lines. 
TMP_DIR=/var/tmp 
PID_FILE=/var/run/jsvc.pid 
CATALINA_BASE=$CATALINA_HOME 
 
#CATALINA_OPTS="-Djava.library.path=/home/jfclere/jakarta-tomcat-connectors/jni/native/.libs" 
CLASSPATH=/ 
$JAVA_HOME/lib/tools.jar:/ 
$CATALINA_HOME/bin/commons-daemon.jar:/ 
$CATALINA_HOME/bin/bootstrap.jar 
 
case "$1" in 
  start) 
    # 
    # Start Tomcat 
    # 
     echo "Starting tomcat6..." 
    $DAEMON_HOME/bin/jsvc / 
    -user $TOMCAT_USER / 
    -home $JAVA_HOME / 
    -Dcatalina.home=$CATALINA_HOME / 
    -Dcatalina.base=$CATALINA_BASE / 
    -Djava.io.tmpdir=$TMP_DIR / 
    -wait 10 / 
    -pidfile $PID_FILE / 
    -outfile $CATALINA_HOME/logs/catalina.out / 
    -errfile $CATALINA_HOME/logs/catalina.err / 
    $CATALINA_OPTS / 
    -cp $CLASSPATH / 
    org.apache.catalina.startup.Bootstrap 
    # 
    # To get a verbose JVM 
    #-verbose / 
    # To get a debug of jsvc. 
    #-debug / 
     if test $? -eq 0 
     then 
          exit 0 
     else 
          echo "Failed to start tomcat6" 
          exit 1 
     fi 
    ;; 
 
  stop) 
    # 
    # Stop Tomcat 
    # 
    $DAEMON_HOME/bin/jsvc / 
    -stop / 
    -pidfile $PID_FILE / 
    org.apache.catalina.startup.Bootstrap 
     if test $? -eq 0 
     then 
          echo "tomcat6 stopped" 
          exit 0 
     else 
          echo "Failed to stop tomcat6" 
          exit 1 
     fi 
    ;; 
 
  restart) 
     # 
     # Restart Tomcat 
     # 
     if $0 stop 
     then 
          $0 start 
     else 
          echo "Failed to stop running server, so refusing to try to start." 
     fi 
     exit 0 
     ;; 
 
 
  *) 
    echo "Usage: tomcat6 start|stop|restart" 
    exit 1;; 
esac

   

In the script above which specifies TOMCAT_USER, jsvc privileged identity will be the first to start tomcat, then switch to the specified user, this could make tomcat as a non-privileged listeners need privileged ports.   

 

 

    

 

  Added to the system services (for example here in Debian), copy the script to / etc / init.d, renamed tomcat6, and then perform  

 

  

   

    

update-rc.d tomcat6 defaults

   

After configuration is complete, tomcat can with the system from the start, and as a non-privileged user daemon running.