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Start Redis Instance on the New Port

If you haven't already started a Redis instance on the new port (e.g., 6382), you'll need to do that. You can start Redis on a specific port using a configuration file or directly via the command line.

Start

redis-server --port 6382

Alternatively, if you have a custom Redis configuration file, use it like this.

redis-server /path/to/redis_6382.conf

Verify

After starting Redis on the new port, verify it's running using the following command.

redis-cli -p 6382 ping

If Redis is running correctly, it should return PONG.

Service

Now, you will not always run redis-server --port 6382 command, as you close your terminal, your Redis Instance on port 6382 will be disable. So you need to run new instance a service, that on reboot your machine have running this new instance of Redis.

Create a New Configuration File

Copy

Execute the command below.

sudo cp /etc/redis/redis.conf /etc/redis/redis_6382.conf

Before copying the conf file, you had only one file at /etc/redis/ directory, named redis.conf, after the copy, you have another file named redis_6382.conf.

Edit

Now, you need to edit the port number of the new conf file. Open the file.

sudo nano /etc/redis/redis_6382.conf

Now, find the line with port and it is possible to be port 6379, update this line into port 6382, and make sure supervised is systemd, means supervised systemd then save and exit.

Create a New Service File

Create File

Create a new systemd service file for the Redis instance on port 6382. You can create a new service file using the command below.

sudo nano /etc/systemd/system/redis_6382.service

Add Instructions

Add the following instructions.

[Unit]
Description=Redis In-Memory Data Store for Port 6382
After=network.target

[Service]
ExecStart=/usr/bin/redis-server /etc/redis/redis_6382.conf --supervised systemd --daemonize no
ExecStop=/usr/bin/redis-cli -p 6382 shutdown
Restart=always

[Install]
WantedBy=multi-user.target

Copy Service File

Or you can copy redis.service file. To do so, execute the command below.

sudo cp /etc/systemd/system/redis.service /etc/systemd/system/redis_6832.service

And now need to edit a few lines, first open the file.

sudo nano /etc/sytemd/system/redis_6832.service

Then edit ExecStart

ExecStart=/usr/bin/redis-server /etc/redis/redis_6382.conf --supervised systemd --daemonize no

And edit PIDFile

PIDFile=/run/redis/redis-6832.pid

And edit Alias

Alias=redis_6832.service

Then save and exit.

Make sure PIDFile is unique. To do so, open the redis_6832.conf file.

sudo nano /etc/redis/redis_6382.conf

And then update pidfile

pidfile /var/run/redis/redis-6382.pid

Then save and exit.

Reload the daemon

sudo systemctl daemon-reload

Enable the Service

sudo systemctl enable redis_6382

Start the Service

sudo systemctl start redis_6382

Check Status

sudo systemctl status redis_6382

Verify

If everything looks good, execute the command to verify.

redis-cli -p 6382 ping