Installing DMP Producer

This section provides a step-by-step guide to installing DMP Producer.

Prerequisites

Make sure the following things are in place, before installing:

Root access to the VM
Required software like Java, MySQL, Kafka, must be installed on the VM

To install DMP Producer, follow the steps below:

Copy necessary files to the mount points e.g., /data, /hdd, and create symbolic links.
```
ln -s /data/ /disk1/
ls -al
```
Link the DMP Producer configuration.
```
ln -s /data/config/dmp-producer /mnt/sst
```
Update the property files like dmp-producer.properties, msk.properties and piistorage.properties.
- Locate the files at/disk1/config/dmp-producer/dmp-producer.properties, and update the dmp-producer.properties.
```
#Kafka producer configurations
KafkaProducerConfig=
# Properties for DB e.g., MySQL
DBConfig=
#SQS config
SQSConfig=
#SES Properties
SESConfig=
#SMTP
SMTPConfig=
```
- Locate the /disk1/msk/msk.properties, and update msk.properties.
```
# Properties for DB e.g., MySQL
DBConfig=
```
- Locate /disk1/piistorage/config/piistorage.properties, and update piistorage.properties.
```
# Properties for DB
DBConfig=
# Properties for Aerospike
AerospikeConfig=
# Properties for Cron Expression
CronExpressionConfig=
```
Copy the DMP Producer JAR file to /disk1/config/dmp-producer/.
```
cp /path/to/dmp-producer.jar /disk1/config/dmp-producer/
```

Create a user for DMP system.

useradd -c "DMP-System User" cdpservice
Update the /etc/passwd file to:
cdpservice:x:1002:1003:DMP-System User:/home/cdpservice:/sbin/nologin

Create a service file at /usr/lib/systemd/system/dmp-producer.service.

[Unit]
Description=DMP Producer Service
After=network.target
[Service]
User=cdpservice
Group=cdpservice
ExecStart=/usr/bin/java -jar /disk1/config/dmp-producer/dmp-producer.jar
SuccessExitStatus=143
StandardOutput=/disk1/logs/dmp-producer/dmp-producer-out.log
StandardError=/disk1/logs/dmp-producer/dmp-producer-err.log
Restart=on-failure
[Install]
WantedBy=multi-user.target

Set Ownership and Permissions for the user.

chown -R cdpservice:cdpservice /disk1 /mnt
touch /disk1/logs/dmp-producer/dmp-producer-out.log
touch /disk1/logs/dmp-producer/dmp-producer-err.log
touch /disk1/logs/dmp-producer-gc.log
chcon -t user_home_t /disk1/logs/dmp-producer/dmp-producer-out.log
chcon -t user_home_t /disk1/logs/dmp-producer/dmp-producer-err.log
chcon -t user_home_t /disk1/logs/dmp-producer-gc.log

Start the DMP Producer Service.

systemctl start dmp-producer
systemctl status dmp-producer

Troubleshooting

If you encounter issues, use the following commands for troubleshooting:

ls -Z /disk1/logs/dmp-producer/dmp-producer-gc.log
ausearch -m avc -ts recent | audit2allow -M dmp_producer
chcon -t init_var_run_t /disk1/logs/dmp-producer/*
chcon -t init_var_run_t /disk1/logs/dmp-producer-gc.log
ausearch -m avc -ts recent
semodule -i dmp_producer.pp
systemctl start dmp-producer
systemctl status dmp-producer
systemctl stop dmp-producer