I am not so into system engineer (I am a Java developer) and I am finding some difficulties trying to understand if a Tomcat server (on a remote server) on which I have to deploy an application is well configured or if have some configuration problem.
The operating system is Linux CentOS release 6.7 (Final)
I need your help to understand what is the situation and what I have to say when I will contact the system administrator of this server.
So to restart Tomcat I have the following statment:
sudo -i -u projectname
sudo service projectnames top sudo service projectname start
First I have to switch on a user having the same name of the project that I have to deploy and of the Tomcat instance that I have to start that will host this project (these information was provided from the sysadmin of this server).
The server seems starts, this is the output:
[projectname@servername webapps]$ sudo service projectname start
getsebool: SELinux is disabled
Using CATALINA_BASE: /usr/local/tomcat/projectname
Using CATALINA_HOME: /usr/local/tomcat/default
Using CATALINA_TMPDIR: /usr/local/tomcat/projectname/temp
Using JRE_HOME:
Using CLASSPATH: /usr/local/tomcat/default/bin/tomcat-juli.jar:/usr/local/tomcat/default/bin/bootstrap.jar
The webaps folder should contains the deployed application and it seems to contain the old version of the application that I have to deploy:
[projectname@servername webapps]$ ls
ROOT ROOT.war
Where ROOT.war is the old war version of my application and the ROOT directory seem to be tha exploded version of this war file.
The problem is that seems that Tomcat does not respond. Trying to open this URL from the browser (this is the server address used to connect via SSH):
http://myservername.hq.mycompany.org:8080/
I obtain a 404 error.
So following these suggestions:
Performing the ps -ef | grep tomcat statment I obtain:
[projectname@servername webapps]$ ps -ef | grep tomcat
projectname 8454 1 1 10:11 ? 00:00:06 /usr/local/jvm/default/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/projectname/conf /logging.properties -Xmx512m -Xms128m -XX:MaxPermSize=512m -XX:PermSize=256m -XX:+UseConcMarkSweepGC -Djava.util.logging.manager=org.apache .juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat/default/endorsed -classpath /usr/local/tomcat/default/bin/tomcat-juli.ja r:/usr/local/tomcat/default/bin/bootstrap.jar -Dcatalina.base=/usr/local/tomcat/projectname -Dcatalina.home=/usr/local/tomcat/default -Djava.io.tm pdir=/usr/local/tomcat/projectname/temp org.apache.catalina.startup.Bootstrap start
projectname 8488 8119 0 10:20 pts/0 00:00:00 grep tomcat
So it seems that the server is started.
But if I perform the netstat -a | grep 8080 to see what is listening on the 8080 port I obtain nothing, this is my output:
[projectname@servername webapps]$ netstat -a | grep 8080
[projectname@hqldservername webapps]$
So what it means? That Tomcat is not working on the 8080 port or that it could be missconfigured? (because it starts but not list).
This is the content of the /usr/local/tomcat/projectname/conf/server.xml configuration file:
<?xml version='1.0' encoding='utf-8'?>
<!--
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.
-->
<!-- Note: A "Server" is not itself a "Container", so you may not
define subcomponents such as "Valves" at this level.
Documentation at /docs/config/server.html
-->
<Server port="8005"
shutdown="SHUTDOWN">
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />
-->
<!--APR library loader. Documentation at /docs/apr.html -->
<!--
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
-->
<!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
<Listener className="org.apache.catalina.core.JasperListener" />
<!-- Prevent memory leaks due to use of particular java/javax APIs-->
<Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
<Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
<Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
<!-- Global JNDI resources
Documentation at /docs/jndi-resources-howto.html
-->
<GlobalNamingResources>
<!-- Editable user database that can also be used by
UserDatabaseRealm to authenticate users
-->
<Resource name="UserDatabase" auth="Container"
type="org.apache.catalina.UserDatabase"
description="User database that can be updated and saved"
factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
pathname="conf/tomcat-users.xml" />
</GlobalNamingResources>
<!-- A "Service" is a collection of one or more "Connectors" that share
a single "Container" Note: A "Service" is not itself a "Container",
so you may not define subcomponents such as "Valves" at this level.
Documentation at /docs/config/service.html
-->
<Service name="Catalina">
<!--The connectors can use a shared executor, you can define one or more named thread pools-->
<!--
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-"
maxThreads="150" minSpareThreads="4"/>
-->
<!-- A "Connector" represents an endpoint by which requests are received
and responses are returned. Documentation at :
Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
Java AJP Connector: /docs/config/ajp.html
APR (HTTP/AJP) Connector: /docs/apr.html
Define a non-SSL HTTP/1.1 Connector on port 8080
-->
<Connector port="8080"
protocol="HTTP/1.1"
connectionTimeout="20000"
URIEncoding="UTF-8"
redirectPort="8443" />
<!-- A "Connector" using the shared thread pool-->
<!--
<Connector executor="tomcatThreadPool"
port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />
-->
<!-- Define a SSL HTTP/1.1 Connector on port 8443
This connector uses the JSSE configuration, when using APR, the
connector should be using the OpenSSL style configuration
described in the APR documentation -->
<!--
<Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
maxThreads="150" scheme="https" secure="true"
clientAuth="false" sslProtocol="TLS" />
-->
<!-- Define an AJP 1.3 Connector on port 8009 -->
<!--
<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
-->
<Connector port="8009"
protocol="AJP/1.3"
redirectPort="8443" />
<!-- An Engine represents the entry point (within Catalina) that processes
every request. The Engine implementation for Tomcat stand alone
analyzes the HTTP headers included with the request, and passes them
on to the appropriate Host (virtual host).
Documentation at /docs/config/engine.html -->
<!-- You should set jvmRoute to support load-balancing via AJP ie :
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
-->
<Engine name="Catalina" defaultHost="localhost">
<!--For clustering, please take a look at documentation at:
/docs/cluster-howto.html (simple how to)
/docs/config/cluster.html (reference documentation) -->
<!--
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
-->
<!-- Use the LockOutRealm to prevent attempts to guess user passwords
via a brute-force attack -->
<Realm className="org.apache.catalina.realm.LockOutRealm">
<!-- This Realm uses the UserDatabase configured in the global JNDI
resources under the key "UserDatabase". Any edits
that are performed against this UserDatabase are immediately
available for use by the Realm. -->
<Realm className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>
</Realm>
<Host name="localhost" appBase="webapps"
unpackWARs="true"
autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false">
<!-- SingleSignOn valve, share authentication between web applications
Documentation at: /docs/config/valve.html -->
<!--
<Valve className="org.apache.catalina.authenticator.SingleSignOn" />
-->
<!-- Access log processes all example.
Documentation at: /docs/config/valve.html
Note: The pattern used is equivalent to using pattern="common" -->
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
prefix="localhost_access_log." suffix=".txt"
pattern="%h %l %u %t "%r" %s %b" />
</Host>
</Engine>
</Service>
</Server>
So I have the following doubts and I need some explanation to correctly expose the problem to my sysadmin:
1) Is it this server correctly runned?
2) Is it listing on 8080 port? If not is it listing on another port or could be that is runned but is not listing on any port?
3) The webapps directory contains the war (in my case ROOT.war) file to deploy and the exploded ROOT directory is the deployed version of this file? Or is it elsewhere?
sudo netstat -nap | egrep ':80|java'and post the result into your question. Notice the different flags tonetstat.