Installing on Red Hat and CentOS (Manual)

This page contains obsolete information and will be removed in the near future.

This section of the documentation describes how to install OpenKM manually. An OpenKM Installer tool does most things automatically; more information at Using the installer.

If you decide to install Red Hat, consider that you should have a licensed Red Hat version; otherwise, the repositories for installing software are locked.

Installing Red Hat without a subscription does not make much sense. There is little reason to enable CentOS repositories on a Red Hat system. If this is your approach, it is better to install CentOS from the start.

Preliminaries

If you plan to configure OpenKM in a cluster or sharding model, please read the following sections before starting the installation process:

Check disk size

$ df -h

Create a user named openkm

$ sudo adduser openkm

You can quickly generate random passwords at https://www.random.org/passwords.

Check server configuration

$ wget -Nc smxi.org/inxi
$ sudo chmod +x inxi
$ sudo ./inxi -F

If it doesn't work, try installing this package:

$ sudo yum install pciutils

Increase ulimit

$ sudo vim /etc/security/limits.conf

Add the following lines to the end of the file (before the line # End of file)

* soft nofile 6084

* hard nofile 6084

Execute limit -n and verify that the open files limits are now updated.

Checking Java version

$ java -version

If Java is correctly installed on your computer, the name and version of the Java virtual machine are displayed:

openjdk version "1.8.0_352"
OpenJDK Runtime Environment (build 1.8.0_352-b08)
OpenJDK 64-Bit Server VM (build 25.352-b08, mixed mode)

The Java version numbering may differ if you have upgraded to a newer major version.

Install Java

Perform these steps only if Java 8 is not installed on your server.

$ sudo yum install java-1.8.0-openjdk

The Java version may differ depending on the version you have installed, but we recommend the latest Java 1.8 release.

Set OpenJDK 1.8 as your default Java version.

Perform this only if Java 8 is not your default Java version.

$ alternatives --config Java

Installing database

Install MariaDB if it is not already installed:

$ sudo yum install mariadb-server

Configure it as a service:

$ sudo systemctl enable mariadb

If you encounter trouble on the first database startup because it cannot create files in the tmp folder, do the following:

Edit the /etc/SELinux/config file:

$ sudo vim /etc/selinux/config

Apply this change:

'SELINUX=disabled'

To take effect immediately, execute the following command:

$ sudo setenforce 0

Change MariaDB root password

Do this only if it's necessary to change the MariaDB root password.

Method 1

$ /usr/bin/mysqladmin -u root -h localhost password 'password.'

Method 2

$ sudo systemctl stop mariadb
$ sudo mysqld --skip-grant-tables &
$ mysql -u root mysql
> UPDATE user SET Password=PASSWORD('YOURNEWPASSWORD') WHERE User='root';
> FLUSH PRIVILEGES;
> exit;

In this case, MariaDB was not started as a service; the process must be killed to stop MariaDB so it can be started again as a service.

Method 3

$ mysql
> UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root';
> FLUSH PRIVILEGES;

More information at MySQL: Resetting permissions.

Check InnoDB is the default MariaDB engine

$ mysql -h localhost -u root -p

> show engines;

It should show something like this:

| InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |

If it is not the default, modify /etc/my.cnf

$ vim /etc/mysql/my.cnf

Add the following under [mysqld]:

default-storage-engine = InnoDB

After changing the default MariaDB engine, the MariaDB service must be restarted for the change to take effect.

Create database

CREATE DATABASE okmdb DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_bin;
CREATE USER openkm@localhost IDENTIFIED BY 'password';
GRANT ALL ON okmdb.* TO openkm@localhost WITH GRANT OPTION;

Installing Tomcat

$ cd /home/openkm

$ unzip Tomcat-8.5.69.zip

The Tomcat version number may differ if you upgrade to a major version.

Configuring Tomcat as a service

For security reasons, you shouldn't run Tomcat as root. It is better to use the 'openkm' user.

Create a file with the script:

$ sudo vim /etc/init.d/openkm

#!/bin/sh
 
### BEGIN INIT INFO
# Provides:          tomcat
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start and stop Apache Tomcat
# Description:       Enable Apache Tomcat service provided by daemon.
### END INIT INFO
 
ECHO=/bin/echo
TEST=/usr/bin/test
TOMCAT_USER=openkm
TOMCAT_HOME=/home/openkm/tomcat-8.5.69
TOMCAT_START_SCRIPT=$TOMCAT_HOME/bin/startup.sh
TOMCAT_STOP_SCRIPT=$TOMCAT_HOME/bin/shutdown.sh
 
$TEST -x $TOMCAT_START_SCRIPT || exit 0
$TEST -x $TOMCAT_STOP_SCRIPT || exit 0
 
start() {
    $ECHO -n "Starting Tomcat"
    su - $TOMCAT_USER -c "$TOMCAT_START_SCRIPT &"
    $ECHO "."
}
 
stop() {
    $ECHO -n "Stopping Tomcat"
    su - $TOMCAT_USER -c "$TOMCAT_STOP_SCRIPT 60 -force &"
    while [ "$(ps -fu $TOMCAT_USER | grep java | grep tomcat | wc -l)" -gt "0" ]; do
        sleep 5; $ECHO -n "."
    done
    $ECHO "."
}
 
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        stop
        sleep 30
        start
        ;;
    *)
        $ECHO "Usage: tomcat {start|stop|restart}"
        exit 1
esac
exit 0

The script must be changed if you use another user to start the service or if your $TOMCAT_HOME is not /home/openkm/tomcat-8.5.69

Make it executable:

$ sudo chmod 755 /etc/init.d/openkm

Update the run-levels:

$ sudo chkconfig openkm --level 2345 on

Check the service

Start the service:

$ sudo service openkm start

Stop the service:

$ sudo service openkm stop

Installing OpenKM

With Tomcat stopped, copy the openkm.war file into /home/openkm/tomcat-8.5.69/webapps

$ cp openkm.war /home/openkm/tomcat-8.5.69/webapps

Installing third-party software

Software	Required	Description
LibreOffice	Yes	Execute the following command to check the installed packages: $ rpm -qa \| grep -i libreoffice Use the package names as a guide. If the headless package is not installed, OpenKM will not start the office service.
Tesseract	No	Some useful links: https://code.google.com/p/tesseract-ocr/wiki/Compiling https://code.google.com/p/python-tesseract/wiki/HowToCompileForCentos http://www.vicchiam.com/blog/?p=168
ClamAV	No	Some useful links: http://www.clamav.net/doc/install.html#rhel
ImageMagick	Yes	$ yum install ImageMagick
GhostScript	Yes	$ yum install ghostscript
Top	No	Download from http://pkgs.repoforge.org/htop/ $ rpm -ivH htop-1.0.3-1.el6.rf.x86_64.rpm

Open 8080 port

By default, this port is closed, so you need to open it:

$ firewall-cmd --permanent --add-port 8080/tcp

$ firewall-cmd --reload

More information at:

How to open and close ports on RHEL 8 / CentOS 8 Linux

Start application

Check openkm.properties parameters

$ vim /home/openkm/tomcat-8.5.69/openkm.properties

Your configuration should be something like this:

# OpenKM Hibernate configuration values
spring.JPA.properties.hibernate.dialect=com.openkm.db.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.DDL-auto=create-only

Ensure spring.jpa.properties.hibernate.dialect=com.openkm.db.dialect.MySQL5InnoDBDialect is enabled if your database is MySQL

First-time application start:

$ service tomcat start

To check if the startup process can execute the command:

$ tail -f /home/openkm/tomcat-8.5.69/log/catalina.log

When the application is started, you'll see in the log file the lines:

2015-07-04 18:28:10,680 [main] INFO  org.apache.coyote.http11.Http11Protocol - Starting ProtocolHandler ["http-bio-0.0.0.0-8080"]
2015-07-04 18:28:10,688 [main] INFO  org.apache.coyote.ajp.AjpProtocol - Starting ProtocolHandler ["ajp-bio-127.0.0.1-8009"]
2015-07-04 18:28:10,692 [main] INFO  org.apache.catalina.startup.Catalina - Server startup in 41456 ms

The application will be accessible at http://YOUR_IP:8080/OpenKM by user:okmAdmin with password: admin (Do not forget to change it!). For more information, please check: Manage users and roles.

Configure the default extensions:

Go to Administration > Utilities > Database query and execute:

INSERT INTO OKM_EXTENSION (EXT_UUID, EXT_NAME) VALUES ('808e7a42-2e73-470c-ba23-e4c9d5c3a0f4', 'Live Edit');
INSERT INTO OKM_EXTENSION (EXT_UUID, EXT_NAME) VALUES ('58392af6-2131-413b-b188-1851aa7b651c', 'HTML Editor 4');
INSERT INTO OKM_PROFILE_MSC_EXTENSION (PEX_ID, PEX_EXTENSION) VALUES (1, '808e7a42-2e73-470c-ba23-e4c9d5c3a0f4');
INSERT INTO OKM_PROFILE_MSC_EXTENSION (PEX_ID, PEX_EXTENSION) VALUES (1, '58392af6-2131-413b-b188-1851aa7b651c');

Linux Oracle 7.x Troubleshooting

For "OpenKM as service" and "ImageMagick" issues, check this section: Red Hat and CentOS issues

The LibreOffice and Tesseract tools are not in the default repositories; you can follow the steps described in the URL below to install them:

Install libreoffice from RPM

You should download the latest RPM package version, which can be found at https://www.libreoffice.org/download/download/?type=rpm-x86&version=6.0.4&lang=en

The process described below is available at https://www.tecmint.com/install-libreoffice-on-rhel-centos-fedora-debian-ubuntu-linux-mint/

Install Tesseract

The script below has been found at https://github.com/EisenVault/install-tesseract-redhat-centos/. We suggest looking at the latest version of the script in the GitHub project for updates.

Before executing the script, review it and consider changing it to download the dictionaries you need; for example, Spanish dictionaries should be downloaded at https://github.com/tesseract-ocr/tessdata/raw/3.04.00/spa.traineddata. These are not present in the script by default.

#!/bin/sh

cd /opt

yum -y update 
yum -y install libstdc++ autoconf automake libtool autoconf-archive pkg-config gcc gcc-c++ make libjpeg-devel libpng-devel libtiff-devel zlib-devel

#Install AutoConf-Archive
wget ftp://mirror.switch.ch/pool/4/mirror/epel/7/ppc64/a/autoconf-archive-2016.09.16-1.el7.noarch.rpm
rpm -i autoconf-archive-2016.09.16-1.el7.noarch.rpm

#Install Leptonica from Source
wget http://www.leptonica.com/source/leptonica-1.75.3.tar.gz
tar -zxvf leptonica-1.75.3.tar.gz
cd leptonica-1.75.3
./autobuild
./configure
make
make install
cd ..

#!/bin/sh

#Install Tesseract from Source
wget https://github.com/tesseract-ocr/tesseract/archive/3.05.01.tar.gz
tar -zxvf 3.05.01.tar.gz
cd tesseract-3.05.01
./autogen.sh
PKG_CONFIG_PATH=/usr/local/lib/pkgconfig LIBLEPT_HEADERSDIR=/usr/local/include ./configure --with-extra-includes=/usr/local/include --with-extra-libraries=/usr/local/lib
LDFLAGS="-L/usr/local/lib" CFLAGS="-I/usr/local/include" make
make install
ldconfig
cd ..

#Download and install tesseract language files
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/ben.traineddata
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/eng.traineddata
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.traineddata
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/tha.traineddata
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/osd.traineddata
mv *.traineddata /usr/local/share/tessdata

#Download Hindi Cube data
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.cube.bigrams
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.cube.fold
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.cube.lm
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.cube.nn
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.cube.params
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.cube.word-freq
wget https://github.com/tesseract-ocr/tessdata/raw/3.04.00/hin.tesseract_cube.nn
mv hin.* /usr/local/share/tessdata

ln -s /opt/tesseract-3.05.01 /opt/tesseract-latest