We are going to create daemon to run Redis instance as background proccess. Daemon is something like service in Windows wolrd.
Redis as daemon under Ubuntu Linux
Let's look at what we need to configure.
Edit /etc/redis/redis-6379.conf file.
The name part ..6379.conf related with port numer under Redis instance running because we are going probably run more Redis instances and each instance need own config file. So we need distinguish those files.
Open config file in editor (open file by Nano editor)
sudo nano /etc/redis/redis-6379.conf
Changes in redis-6379.conf file
Check and set correct port
Comment out binding IP address (to comment out use # hash)
# bind 127.0.0.1
Set protected-mode to no to allow connect to Redis instance remotely
Find supervised directive and set it to systemd (systemd is linux daemon that start other daemons after system start and exit those daemons when system shutting down)
# If you run Redis from upstart or systemd, Redis can interact with your # supervision tree. Options: # supervised no - no supervision interaction # supervised upstart - signal upstart by putting Redis into SIGSTOP mode # supervised systemd - signal systemd by writing READY=1 to $NOTIFY_SOCKET # supervised auto - detect upstart or systemd method based on # UPSTART_JOB or NOTIFY_SOCKET environment variables # Note: these supervision methods only signal "process is ready." # They do not enable continuous liveness pings back to your supervisor. supervised systemd ...
Next find dir and set /var/lib/redis/redis1
# The working directory. # # The DB will be written inside this directory, with the filename specified # above using the 'dbfilename' configuration directive. # # The Append Only File will also be created inside this directory. # # Note that you must specify a directory here, not a file name. dir /var/lib/redis/redis1 ...
Create systemd file for Redis
Create systemd file in Nano editor
sudo nano /etc/systemd/system/redis1.service
Add text (service is going to be running under redis user)
[Unit] Description=Redis Cache 1 After=network.target [Service] User=redis Group=redis ExecStart=/usr/local/bin/redis-server /etc/redis/redis-6379.conf ExecStop=/usr/local/bin/redis-cli -p 6379 shutdown Restart=always [Install] WantedBy=multi-user.target
Create redis user, groups and directories
sudo adduser --system --group --no-create-home redis sudo mkdir /var/lib/redis/redis1 # create directory sudo chown redis:redis /var/lib/redis/redis1 # make redis own directory sudo chmod 770 /var/lib/redis/redis1 # permission
Start Redis service
sudo systemctl start redis1
systemctl status redis
--- test redis instance---
Open Redis client and connect to running redis server
redis-cli -p 6379
Test connectivity from Redis client to Redis server
Exit Redis client
Restart Redis service
sudo systemctl restart redis1
Enable Redis to start after boot computer
sudo systemctl enable redis1