Uninstall Redis from ubuntu
A-a. if you use apt-get:
Here --auto-remove option removes the Redis server package and its dependencies.
And the purge option removes the configuration and other Redis related data files.
This successfully uninstalls the Redis from the Ubuntu server.
After uninstalling the package, in the Ubuntu system check if the package is present or not. For this, we use the command, sudo apt-cache policy redis-server
this will show redis-server: Installed: (none)
A-b. If you use make file - Compiled redis manually:
sudo rm -r /var/redis/
# Stop a all instance. sudo service redis_version stop sudo service redis_6379 or systemctl stop redis
# Remove the files in sudo rm /usr/local/bin/redis-* # Remove Redis Configuration.
sudo rm -r /etc/redis/rm /etc/redis/redis.conf# Remove existing Redis log files. sudo rm /var/log/redis_*
# Remove existing Redis data directory.
sudo rm -r /var/lib/redis/ # Remove existing Redis server init scripts
sudo rm /etc/init.d/redis_* # Remove existing Redis PID files (Only if exists) sudo rm /var/run/redis_* # Restart your Ubuntu server must. sudo reboot now
sudo apt update -y apt-cache policy redis-server sudo apt install build-essential tcl pkg-config -y
mkdir redis
cd redis # download redis
wget http://download.redis.io/releases/redis-6.0.9.tar.gz
tar xzf redis-6.0.5.tar.gz
cd redis-6.0.9
# Proceed with the make command make cd src && make test
cd src && sudo make install
redis-cli shutdown
redis-server
redis-cli
Installing Redis more properly
Create a directory in which to store your Redis config files and your data:
sudo mkdir /etc/redis sudo mkdir /var/redis
Copy the init script that you'll find in the Redis distribution under the utils directory into /etc/init.d. We suggest calling it with the name of the port where you are running this instance of Redis. For example:
sudo cp /home/mg/redis/redis-6.0.5/utils/redis_init_script /etc/init.d/redis_6379 sudo cp /home/mg/redis/redis-6.0.5/utils/redis_init_script /etc/init.d/redis_6379
Edit the init script.
sudo vi /etc/init.d/redis_6379
Make sure to modify REDISPORT accordingly to the port you are using. Both the pid file path and the configuration file name depend on the port number.
Copy the template configuration file you'll find in the root directory of the Redis distribution into /etc/redis/ using the port number as name, for instance:
sudo cp redis.conf /etc/redis/6379.conf
Create a directory inside /var/redis that will work as data and working directory for this Redis instance:
sudo mkdir /var/redis/6379
Edit the configuration file, making sure to perform the following changes:
- Set daemonize to yes (by default it is set to no).
- Set the pidfile to
/var/run/redis_6379.pid
(modify the port if needed). - Change the port accordingly. In our example it is not needed as the default port is already 6379.
- Set your preferred loglevel.
- Set the logfile to
/var/log/redis_6379.log
- Set the dir to /var/redis/6379 (very important step!)
Finally, add the new Redis init script to all the default runlevels using the following command:
sudo update-rc.d redis_6379 defaults
You are done! Now you can try running your instance with:
sudo /etc/init.d/redis_6379 start
sudo /etc/init.d/redis_6379 stop
sudo systemctl restart redis_6379.service
sudo systemctl status redis_6379.service
sudo systemctl disable redis
(Not sure) sudo systemctl enable redis_6379.service
Make sure that everything is working as expected:
- Try pinging your instance with redis-cli.
- Do a test save with redis-cli save and check that the dump file is correctly stored into /var/redis/6379/ (you should find a file called dump.rdb).
- Check that your Redis instance is correctly logging in the log file cat /var/log/redis_6379.log.
- If it's a new machine where you can try it without problems make sure that after a reboot everything is still working.
Note: In the above instructions we skipped many Redis configuration parameters that you would like to change, for instance in order to use AOF persistence instead of RDB persistence, or to setup replication, and so forth. Make sure to read the example redis.conf
file (that is heavily commented) and the other documentation you can find in this web site for more information.
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