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Some Redis installation notes 2019-01-25 2023-10-21 some-redis-installation-notes post Tutorials /img/blog/some-redis-installation-notes.png A blog post with a full and viable Redis installation procedure on Debian

A missing blog post image

Introduction

I've just achieved one more Redis installation today, and as the previous ones, I had to browse the WEB again, looking for the same pieces of information.
You'll find below my Redis-installation-memo (at least for me, in the future).

No slow listening TCP sockets. Only a hardened UNIX one.
No boot warnings. Only Linux kernel tweaks.
Not so many databases. Only what we usually need.
No hand-made Bash scripts for standalone program administration. Only a systemd-supervised instance.

A procedure powered by Debian ❤️

EDIT 2019-11-11 : This post has been updated, extending compatibility to Debian Buster !

EDIT 2021-08-07 : This post has been updated (again), according to Debian Bullseye new requirements. You may browse previous revisions of it here.

The procedure

{% highlight bash %} apt install -y redis-server

systemctl stop redis-server.service

nano /etc/redis/redis.conf
'

...

port 0

...

unixsocket /run/redis/redis-server.sock unixsocketperm 770

...

supervised systemd

...

pidfile /run/redis/redis-server.pid

...

databases 1

...

requirepass '

systemctl edit redis-server.service
' [Service] Type=notify TimeoutStartSec=infinity

If running in non-cluster mode:

ProtectSystem=full '

sysctl -w vm.overcommit_memory=1 echo 'vm.overcommit_memory = 1' > /etc/sysctl.d/redis.conf

echo "never" > /sys/kernel/mm/transparent_hugepage/enabled
nano /etc/default/grub
'

...

GRUB_CMDLINE_LINUX_DEFAULT="[...] transparent_hugepage=never"

...

' update-grub2

systemctl start redis-server.service {% endhighlight %}

At this time the server should be up and running, you may want to check that everything went fine this way :

{% highlight bash %} systemctl status redis-server.service tail -f /var/log/redis/redis-server.log {% endhighlight %}


For Redis usage from PHP-based applications you'll need :

{% highlight bash %} usermod -a -G redis www-data

Using mod_php ?

systemctl restart apache2

Using FPM ?

systemctl restart php7.X-fpm {% endhighlight %}


Conclusion

No conclusion. It should work, even for you, young Web-wanderer.