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SLES 15 Preparations

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Ingolf Kuss edited this page Aug 27, 2024 · 7 revisions

Instructions for SLES 15 SP4, SP5 and SP6

Create Linux User ‘toscience’

Create a Linux User “toscience” with yast2. Created an encrypted passwort:

head -c 300 /dev/urandom | tr -cd '[a-zA-Z0-9-_]' | head -c 16

choose home directory: /opt/toscience
add to groups “users, root”

Make the user a sudoer. Add one line to /etc/sudoers :
edit /etc/sudoers

toscience    ALL = (root) /bin/su

Install system programs maven, git, java, mariadb

sudo su toscience
Install maven, maven-local and xmvn with yast2.
Install git:

zypper ref
zypper in git

java11-openjdk has been installed by default. elasticsearch-1.* is not compatible with java11, we need java8.

Install Java 8 with zypper, this will install the official SuSE package:

zypper search-packages -s jdk
Following packages were found in following modules:
java-1_8_0-openjdk            Legacy Module (sle-module-legacy/15.3/x86_64)          SUSEConnect --product sle-module-legacy/15.3/x86_64
java-1_8_0-openjdk-demo       Legacy Module (sle-module-legacy/15.3/x86_64)          SUSEConnect --product sle-module-legacy/15.3/x86_64
java-1_8_0-openjdk-devel      Legacy Module (sle-module-legacy/15.3/x86_64)          SUSEConnect --product sle-module-legacy/15.3/x86_64
java-1_8_0-openjdk-headless   Legacy Module (sle-module-legacy/15.3/x86_64)          SUSEConnect --product sle-module-legacy/15.      

SUSEConnect --product sle-module-legacy/15.3/x86_64
  Successfully registered system
zypper install java-1_8_0-openjdk-devel

OR, if you can't use SUSEConnect, activate sle-module-legacy-release 15.5 in YaST2 - Package Manager.
Install Legacy Module 15 SP6 x86_64 via YaST2 - Software Repositories - Add - Extensions and Modules from Registration Server.
Then install java-1_8_0-openjdk-devel with YaST2.

This will also install java-1_8_0-openjdk and java-1_8_0-openjdk-headless

Deinstall Java 17, or whatever is your currently installed Java version – if not 8 -, with yast.

java -version
openjdk version "1.8.0_392"
OpenJDK Runtime Environment (IcedTea 3.29.0) (build 1.8.0_392-b08 suse-150000.3.85.1-x86_64)
OpenJDK 64-Bit Server VM (build 25.392-b08, mixed mode)
sudo su
chown toscience:users /opt
ln -s $JAVA_HOME /opt/jdk

Install mariadb with yast2.

systemctl enable mariadb.service
rcmysql start

Increase max connections and max allowed packet in a production setup:
Edit /etc/my.cnf

 # The MariaDBserver
[mysqld]
max_connections=500
max_allowed_packet  = 16M

Install apache2

Install apache2 with yast2.
Change protocol to SSL HTTPS:

edit /etc/sysconfig/apache2
APACHE_SERVER_FLAGS="SSL HTTP2"

Install Apache Modules:


 sudo a2enmod proxy proxy_mod proxy_http rewrite mod_access_compat proxy_http mpm_event http2 proxy_fcgi setenvif
 sudo a2enmod headers
 systemctl start apache2.service
 # tail -99f /var/log/apache2/access_log
 sudo  chkconfig -a apache2   #  to start apache2 already while system reboot

Apache needs some more modules in order to serve as a load balancer:

a2enmod slotmem_shm
a2enmod lbmethod_bybusyness
a2enmod proxy_balancer

Install php56-fpm

This is part of the Frontend Installation Preparations

Install Redland Bindings for PHP56

This is part of the to.science.drupal Installation

System configuration

Edit one line in /etc/hosts :
127.0.0.1 <YOUR_SERVERNAME> api.<YOUR_SERVERNAME> localhost
sudo service network restart

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