📙 You will learn
How to install and configure ThreadFix on CentOS. While these instructions should apply to RHEL as well, the following instructions were developed and tested against CentOS 7.
Prerequisites
Audience: IT Professional and/or End User
Difficulty: Intermediate
Time needed: Approximately 60 minutes
Tools required: OpenJDK 11 or OpenJDK 8 or Oracle Java 8, latest version of Tomcat 8.5, MySQL or Microsoft SQL Server
Install Java
ThreadFix 2.7.9 and newer can run on OpenJDK 11 (or Oracle Java 8 / OpenJDK 8, shown in the sections below). To check the currently-installed version, run the java -version
command.
OpenJDK 11
If you don't have OpenJDK 11 installed, you can install it by running the following command:
sudo yum install java-11-openjdk
If you have multiple JDKs installed, run the sudo alternatives --config java
command and select the version installed above.
OpenJDK 8
If you don't have OpenJDK 8 installed, you can install it by running the following command:
sudo yum install java-1.8.0-openjdk
If you have multiple JDKs installed, run the sudo alternatives --config java
command and select the version installed above.
Oracle Java 8
To deploy versions of ThreadFix 2.6.2.6 and older, visit the Oracle JDK download page here and look for the .rpm
version of the Linux x64 distribution. Copy the download link and wget
it.
Example wget
command to download the jdk-8u192-linux-x64.rpm file:
wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" "https://download.oracle.com/otn-pub/java/jdk/8u192-b12/750e1c8617c5452694857ad95c3ee230/jdk-8u192-linux-x64.rpm"
Install with yum localinstall.
Example using the file downloaded above:
sudo yum localinstall jdk-8u192-linux-x64.rpm
The JDK should be installed at /usr/java/<jdk-version> (e.g., /usr/java/jdk1.8.0_192
). You can verify the install using the java -version
command. If you have multiple JDKs installed, run the sudo alternatives --config java
command and select the version installed above.
ThreadFix recommends the latest version of Tomcat 8.5.
Download the latest version of Tomcat 8.5.
wget https://mirrors.gigenet.com/apache/tomcat/tomcat-8/v8.5.59/bin/apache-tomcat-8.5.59.tar.gz
Create a directory to install Tomcat, then extract the tar ball there
sudo mkdir /opt/tomcat
sudo tar xvf apache-tomcat-8*tar.gz -C /opt/tomcat --strip-components=1
Create a group and user to manage the Tomcat execution.
sudo groupadd tomcat
sudo useradd -s /bin/false -g tomcat -d /opt/tomcat tomcat
Web.xml Update
For compatibility with Tomcat 8.5.43 and newer, make the following update:
Open the <tomcat-deploy>/conf/web.xml file in a text editor with elevated privilege and edit the default servlet as follows:
<servlet>
<servlet-name>default</servlet-name>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>default</servlet-name>
<servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>0</param-value>
</init-param>
<init-param>
<param-name>listings</param-name>
<param-value>false</param-value>
</init-param>
<init-param>
<param-name>fileEncoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
(Note that the above adds the fileEncoding parameter and sets its value to UTF-8.)
Enable Tomcat Service
If you want tomcat to run as a service that you can have start automatically at boot, the preferred method is using systemd. Create a file at /etc/systemd/system/tomcat.service
with the following content. CentOS systemd Tomcat Service:
# Systemd unit file for tomcat
[Unit]
Description=Apache Tomcat Web Application Container
After=syslog.service network.target
[Service]
Type=forking
Environment=JAVA_HOME=/usr
Environment=CATALINA_PID=/opt/tomcat/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat
Environment=CATALINA_BASE=/opt/tomcat
Environment='CATALINA_OPTS=-Xms2G -Xmx8G -server -XX:+UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'
ExecStart=/opt/tomcat/bin/startup.sh
ExecStop=/bin/kill -15 $MAINPID
User=tomcat
Group=tomcat
UMask=0007
RestartSec=10
Restart=always
[Install]
WantedBy=multi-user.target
Reload Systemd to load the Tomcat unit file and enable the tomcat.service.
sudo systemctl daemon-reload
sudo systemctl enable tomcat.service
SSL/TLS Implementation
For information on configuring Tomcat to run over SSL/TLS, refer to the following article.
Once you've followed the steps above, you're ready to install ThreadFix. Please see the ThreadFix Installation guide to complete your deployment.
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