Category Archives: Operating Systems

Dump of ~/.histfile while setting up a Tomcat instance

31 Wednesday Oct 2012

Posted by in Apache Tomcat, Application Servers, Linux / UNIX, Networking, Operating Systems

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Just because I keep having to do this over and over again, here’s a cheat sheet for setting up a tomcat instance…

sudo cp apache-tomcat-6.0.35.tar.gz /usr/local
cd /usr/local
sudo tar -xvzf apache-tomcat-6.0.35.tar.gz
ls
sudo ln -s /usr/local/apache-tomcat-6.0.35 /usr/local/tomcat
sudo groupadd tomcat 
sudo useradd -g tomcat -c "Tomcat User" -d /usr/local/tomcat tomcat
sudo passwd tomcat TomTheCat
sudo chown tomcat:tomcat /usr/local/tomcat
sudo chown -R tomcat:tomcat /usr/local/apache-tomcat-6.0.35
sudo mkdir /usr/local/tomcat_ect
sudo chown tomcat:tomcat /usr/local/tomcat_ect
sudo cp -pr /usr/local/tomcat/* /usr/local/tomcat_ect/
cd /usr/local/tomcat_ect
cd conf
sudo nano server.xml
cd /etc
cd init.d
sudo service httpd stop
sudo chkconfig --del httpd
sudo iptables -t nat -I PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
sudo iptables-save
ls /etc/init.d/
sudo nano /etc/init.d/iptables
sudo cp tomcat_ect /etc/init.d/
sudo nano /etc/init.d/tomcat_ect
ls -la /etc/init.d
ls -la /etc/init.d/
sudo chkconfig --add tomcat_ect
sudo chkconfig --level 234 tomcat_ect on          
sudo service tomcat_ect start
cd /usr/local/tomcat_ect/conf
sudo nano tomcat-users.xml
sudo service tomcat_ect stop
sudo service tomcat_ect start
cd /usr/local/tomcat_ect/bin
ls
sudo nano catalina.sh
sudo service tomcat_ect stop
sudo service tomcat_ect start
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New VPS server testing

25 Tuesday Sep 2012

Posted by in Networking, Operating Systems

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Checking out a new VPS service with two new hosts. One of them is a Minecraft server. Needless to say, I have high hopes. I’ve never paid for Minecraft hosting before.

I’ll be posting some once my new PieServ game server is online. (1st ding against them, it’s been “pending” for about an hour. The other VPS host, a CentOS box, was up and running instantly…)

OpenJDK on CentOS missing javac

02 Thursday Aug 2012

Posted by in Java, Linux / UNIX, Operating Systems

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CentOS6 with OpenJDK 6 previously installed…Jenkins failed to build a project because it couldn’t find javac. Today’s lesson, OpenJDK is just the JRE package. You need to install java-1.6.0-openjdk-devel to get a real JDK.

see http://openjdk.java.net/install/

the rub — be sure to run

sudo yum install java-1.6.0-openjdk-devel

Configure Apache Tomcat to use Apache httpd web server

30 Monday Jul 2012

Posted by in Apache Tomcat, Apache Web Server, Application Servers, Linux / UNIX, Networking, Operating Systems

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see this: http://fijiaaron.wordpress.com/2008/07/30/configuring-an-apache-virtualhost-to-use-tomcat/

and here’s a sample from my /etc/httpd/conf/vhosts/a-vhost-config.conf:

ProxyRequests Off

AddDefaultCharset Off
Order deny,allow
Allow from all

ProxyPass / ajp://localhost:8019/
ProxyPassReverse / ajp://localhost:8019/

Created /etc/httpd/conf/workers.properties:

# Define 1 real worker using ajp13
worker.list=worker1
# Set properties for worker1 (ajp13)
worker.worker1.type=ajp13
worker.worker1.host=localhost
worker.worker1.port=8019

 

Networking fails moving VirtualBox Linux guest to another host

29 Sunday Jul 2012

Posted by in Linux / UNIX, Networking, Operating Systems

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(because the mac changed)
https://forums.virtualbox.org/viewtopic.php?f=2&t=27220

…and the mac address in the eth0 config file at /etc/sysconfig/network-scripts/ifconfig-eth0 needs to match the mac address in the rules file at /etc/udev/rules.d/70-persistent-net.rules…

The gist is…

You can edit the /etc/udev/rules.d/70-persistent-net.rules or you can delete the rules and Linux will configure it on the next boot.

Or bypass the whole issue and use the same mac address as the original vm…which shouldn’t be a problem behind different NAT firewalls(?)

Linux link dump for current project (to be sorted later)

25 Wednesday Jul 2012

Posted by in Apache Tomcat, Apache Web Server, Linux / UNIX, Operating Systems

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Working on a new project and the server guys made me a new RHEL server for the dev team to use.  And IT said “here you go, good luck”.  Now, in a previous career choice I was a Windows server admin, and I’ve dabbled in your various Linux and UNIX and Solaris environments.  I have not, however, been a big Apache Tomcat user. The Apache httpd server, sure, but not Tomcat.  So here are some links I’ve been reading to get my local CentOS VM configured before I start trying to blow up configure the dev server that my team will be using to support multiple virtual sites and Tomcat instances…

SELinux again on AJP connection: http://sysadminsjourney.com/content/2010/02/01/apache-modproxy-error-13permission-denied-error-rhel/