Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
Next revision Both sides next revision
tutorial:adm:server_preparation_tmp [2020/07/24 08:41]
fiserp [Java - CentOS8] 		tutorial:adm:server_preparation_tmp [2020/07/24 09:09]
fiserp [Start Tomcat automatically after system startup]
Line 203: Line 203:
 dnf install -y java-11-openjdk-headless java-11-openjdk-devel dnf install -y java-11-openjdk-headless java-11-openjdk-devel
 </code> </code>
- 
-Then create the file ''/etc/profile.d/java.sh'' with following: 
-<file bash java.sh> 
-[ -d /usr/lib/jvm/java-openjdk ] && export JAVA_HOME=/usr/lib/jvm/java-openjdk 
-</file> 
  
  
Line 216: Line 211:
 <code> <code>
 groupadd -r tomcat groupadd -r tomcat
-useradd -r -s /bin/nologin -g tomcat -d /opt/tomcat tomcat+useradd -r -s /usr/sbin/nologin -g tomcat -d /opt/tomcat tomcat
 getent passwd tomcat getent passwd tomcat
-#tomcat:x:995:993::/opt/tomcat:/bin/nologin+#tomcat:x:995:993::/opt/tomcat:/usr/sbin/nologin
 </code> </code>
  
Line 228: Line 223:
 </code> </code>
  
-  * Download Apache Tomcat 8.5.x from the website [[https://tomcat.apache.org/download-80.cgi]] to **/opt/tomcat/** +  * Download Apache Tomcat 8.5.x from the website [[https://tomcat.apache.org/download-80.cgi]] to ''/opt/tomcat/'' 
-    * In our exapmle the version is 8.5.8.+    * In our exapmle the version is 8.5.57.
  
-  * extract files from archive:+  * extract files from the archive:
  
 <code bash> <code bash>
-tar xzf apache-tomcat-8.5.8.tar.gz+tar xzf apache-tomcat-8.5.57.tar.gz
 </code> </code>
  
Line 241: Line 236:
 <code bash> <code bash>
 cd /opt/tomcat cd /opt/tomcat
-ln -s apache-tomcat-8.5.8 current+ln -s apache-tomcat-8.5.57 current
 </code> </code>
  
Line 251: Line 246:
 chmod 750 /opt/tomcat chmod 750 /opt/tomcat
 cd /opt/tomcat/current cd /opt/tomcat/current
-chmod o+rX -R ./+chmod -R o+rX ./
 chgrp -R tomcat conf/ bin/ lib/ chgrp -R tomcat conf/ bin/ lib/
-chmod g+rwx conf+chmod g+rx conf
 chmod g+r conf/* chmod g+r conf/*
 chown -R tomcat webapps/ work/ temp/ logs/ chown -R tomcat webapps/ work/ temp/ logs/
Line 273: Line 268:
 [Unit] [Unit]
 Description=Apache Tomcat Web Application Container Description=Apache Tomcat Web Application Container
-After=syslog.target network.target+After=syslog.target network.target postgresql.service
  
 [Service] [Service]
Line 296: Line 291:
 WantedBy=multi-user.target WantedBy=multi-user.target
 </file> </file>
 +<note>
 +  * Values of ''-Xms'' and ''-Xmx'' se are closely dependent on server sizing. If you have enough memory, we strongly recommend to use ''-Xmx 6128M'' or more.
 +  * Tomcat will be started under user ''tomcat:tomcat''.
 +</note>
  
-  * Values of Xms a Xmx se are closely dependent on server sizing. If you have enough memory it is strongly advised to use Xmx 6128M or more. +  * Reload systemd configuration:
- +
-  * Tomcat will be started under user ''tomcat:tomcat'' a will use java installed in ''/usr/lib/jvm/java-1.8.0-openjdk''. +
-  * After every systemd configuration change it is necessary to reload:+
  
 <code> <code>
 systemctl daemon-reload systemctl daemon-reload
 </code> </code>
-  * Test start:+ 
 +  * Start the Tomcat to ensure it is configured properly. Enable its start on OS start. 
 <code> <code>
 systemctl start tomcat systemctl start tomcat
 +systemctl enable tomcat
 </code> </code>
 +
   * Check that Tomcat runs with desirable parameters:   * Check that Tomcat runs with desirable parameters:
 +
 <code bash> <code bash>
-[root@tomcat1 logs]# ps -u tomcat -fwww +[root@tomcat1 logs]# ps -ef | grep ^tomcat 
-UID        PID  PPID  C STIME TTY          TIME CMD +tomcat      1623       1  9 11:08 ?        00:00:04 /usr/lib/jvm/java-openjdk/bin/java -Djava.util.logging.config.file=/opt/tomcat/current/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true -Djavax.servlet.request.encoding=UTF-8 -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xms512M -Xmx1024M -server -XX:+UseParallelGC -Dignore.endorsed.dirs= -classpath /opt/tomcat/current/bin/bootstrap.jar:/opt/tomcat/current/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat/current -Dcatalina.home=/opt/tomcat/current -Djava.io.tmpdir=/opt/tomcat/current/temp org.apache.catalina.startup.Bootstrap start
-tomcat    1602     1  1 09:44 ?        00:00:02 /usr/lib/jvm/java-openjdk/bin/java -Djava.util.logging.config.file=/opt/tomcat/current/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true -Djavax.servlet.request.encoding=UTF-8 -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Xms512M -Xmx1024M -server -XX:+UseParallelGC -classpath /opt/tomcat/current/bin/bootstrap.jar:/opt/tomcat/current/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat/current -Dcatalina.home=/opt/tomcat/current -Djava.io.tmpdir=/opt/tomcat/current/temp org.apache.catalina.startup.Bootstrap start+
 </code> </code>
-  * Stop Apache Tomcat:+ 
 +  * Stop the Tomcat. 
 <code> <code>
 systemctl stop tomcat systemctl stop tomcat
-</code> 
-  * Enable tomcat start after OS start: 
-<code bash> 
-systemctl enable tomcat 
 </code> </code>