I tried it, so make a note

Premise

--JDK installed --Tomcat installed

procedure

Place the Activiti 6 WAR file on the server in advance.

# curl -LkvOf https://github.com/Activiti/Activiti/releases/download/activiti-6.0.0/activiti-6.0.0.zip

Create Activiti 6 Execution User
```
# useradd activiti
```
Create a directory for Activiti 6
```
# mkdir /opt/activiti
```
Place the Tomcat directory inside the created directory
```
# mv /root/apache-tomcat-8.5.56 /opt/activiti/tomcat
```
Remove the default deployed web apps from tomcat / webapps
```
# rm -rf /opt/activiti/tomcat/webapps/*
```

Place the Activiti 6 WAR file under tomcat / webapps

# cp /root/activiti-*.war /opt/activiti/tomcat/webapps/

Create a tomcat / bin / setenv.sh file

# vi /opt/activiti/tomcat/bin/setenv.sh

CATALINA_PID=$CATALINA_HOME/activiti.pid

###The following is described for JDK 11
CATALINA_OPTS="--add-opens=java.base/java.lang=ALL-UNNAMED \
    --add-opens=java.base/java.io=ALL-UNNAMED \
    --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED"
export CATALINA_OPTS

Change owner
```
# chown -R activiti: /opt/activiti
```

Create a service file

[Unit]
Description=Activiti Service

[Service]
Type=forking
User=activiti
PIDFile=/opt/activiti/tomcat/activiti.pid
ExecStart=/opt/activiti/tomcat/bin/startup.sh
ExecStop=/opt/activiti/tomcat/bin/shutdown.sh

[Install]
WantedBy=multi-user.target

Start

```sh
# systemctl daemon-reload && systemctl start actitivi
```

[CENTOS] Install Activiti 6

Premise

procedure