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catalina.out log rotation

I am interested in catalina.out log file rotation, I have an application where logging to catalina.out is very huge, say 0.5 MB / sec.

So I have written one script to handle this which is shown below.

 

# crontab -l | grep catalina

0,30 * * * * bash /catalina_log_handler.sh  >/dev/null 2>&1

 

# […]

TOMCAT SERVER

Reasons for Using a Web Server Apache You may be wondering why a separate Web server is needed when Tomcat already has an HTTP Connector. Following are some reasons: ? Performance—Tomcat is inherently slower than a Web server. Therefore, it is better for the Web server to serve up static content, while Tomcat handles the […]

catalina.out log rotation

Hi,

I am interested in catalina.out log file rotation, I have an application where logging to catalina.out is very huge, say 0.5 MB / sec.

So I have written one script to handle this which is shown below.

# crontab -l | grep catalina

0,30 […]

JMAP, HISTO, Thread Dump, CPU Utilization

Dear Reader,

In a production environment Java Profiling is not an option, we have seen multiple times that our CPU has reached almost 100% or even 300% sometime. That is really a panic scenario especially when you are handling production environment or at client place to check what went wrong.

Fortunately, Java comes with some […]

Install vfabric-web-server & TcServer

mkdir tcserver cd tcserver/ wget -q -O – http://repo.vmware.com/pub/rhel6/vfabric/5.2/vfabric-5.2-suite-installer | sh

yum search vfabric

[root@cluster1 vfabric-web-server]# yum search vfabric Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: centos.ipserverone.com * extras: centos.ipserverone.com * updates: centos.ipserverone.com ========================================================= N/S Matched: vfabric ========================================================= vfabric-5.2-repo.noarch : vFabric 5.2 repository configuration vfabric-administration-server.noarch : VMware vFabric Administration […]

Tomcat 8 clustering and Load Balancing Redhat Fedora and Centos

Let us build 3 node Tomcat 8 cluster  with Apache

web Server  – > 192.168.2.40

cluster2 -> 192.168.1.41 cluster3 -> 192.168.1.42

Web server is  CLUSTER1

The characteristics of this cluster are:

Session affinity: sessions are associated with single servers. Failover: if a server dies, a connection will be directed to the nearest available server. […]

Tomcat and Keystore

Keystore and cacerts

Steps:

1. list the existing keys, the default file is .keystore under /usr/local/tomcat folder # cd /usr/local/tomcat # keytool -list -v -storepass changeit

2. delete the existing keys( key alias :tomcat) # cd /usr/local/tomcat # keytool -delete -alias tomcat -storepass changeit

3. generate self-signed key # keytool -h for usage # keytool […]

Tomcat could not run through SSL due to jsse.invalid_ssl_conf

SEVERE: Error initializing endpoint java.io.IOException: jsse.invalid_ssl_conf     at org.apache.tomcat.util.net.jsse.JSSESocketFactory.checkConfig(JSSESocketFactory.java:817)     at org.apache.tomcat.util.net.jsse.JSSESocketFactory.init(JSSESocketFactory.java:522)     … Caused by: javax.net.ssl.SSLException: No available certificate or key corresponds to the SSL cipher suites which are enabled.     at com.sun.net.ssl.internal.ssl.SSLServerSocketImpl.checkEnabledSuites(SSLServerSocketImpl.java:310)     at com.sun.net.ssl.internal.ssl.SSLServerSocketImpl.accept(SSLServerSocketImpl.java:255)     at org.apache.tomcat.util.net.jsse.JSSESocketFactory.checkConfig(JSSESocketFactory.java:813)     … SEVERE: Failed to initialize connector [Connector[HTTP/1.1-8443]] LifecycleException:  Protocol handler initialization failed: java.io.IOException: jsse.invalid_ssl_conf     at org.apache.catalina.connector.Connector.initialize(Connector.java:1024)     at org.apache.catalina.core.StandardService.initialize(StandardService.java:703)     … Cause […]

Disable HTTP Methods in Tomcat

HOWTO: Disable HTTP Methods in Tomcat Introduction

In the Apache web server, if you want to disable access to specific methods, you can take advantage of mod_rewrite and disable just about anything, often with only one or two lines of configuration file entries. In Apache Tomcat, security is enforced by way of security constraints that […]

How to hide web server version in Tomcat

Add the following attributes to the <Connector> in Tomcat’s server.xml to hide web server version in Tomcat at line no- 73 :-

# vim apache-tomcat/conf/server.xml

<Connector port=”8080? protocol=”HTTP/1.1?connectionTimeout=”20000?redirectPort=”8443?server=”Tomcat” />