Amazon AWS – Installing Redis on EBS

In this step-by-step guide i’ll show you how to install Redis on AWS (Amazon Linux AMI).

I’ll assume you’re performing steps below as a su (sudo -s).

Download Redis:

cd /usr/local/src
wget http://download.redis.io/releases/redis-2.8.12.tar.gz
tar xzf redis-2.8.12.tar.gz
rm -f redis-2.8.12.tar.gz

Create following directories and copy binaries:

mkdir /etc/redis /var/redis
cp src/redis-server src/redis-cli /usr/local/bin

Copy Redis template configuration file into /etc/redis/ (using Redis port number instance as its name (according to best practices mentioned on Redis site)):
```
cp redis.conf /etc/redis/6379.conf
```
_
Create directory inside /var/redis that will act as working/data directory for this Redis instance:
```
mkdir /var/redis/6379
```
_
Edit Redis config file to make necessary changes:
```
nano /etc/redis/6379.conf
```
_
Make following changes to 6379.conf
> Set daemonize to yes (by default it is set to no).
> Set pidfile to /var/run/redis.pid
> Set preferred loglevel
> Set logfile to /var/log/redis_6379.log
> Set dir to /var/redis/6379

_
Don’t copy the standard Redis init script from utils directory into /etc/init.d (as it’s not Amazon Linux AMI/chkconfig compliant), instead download the following:
```
wget https://raw.githubusercontent.com/saxenap/install-redis-amazon-linux-centos/master/redis-server
```
_

Move and chmod downloaded redis init script:

mv redis-server /etc/init.d
chmod 755 /etc/init.d/redis-server

Auto-enable Redis instance:

chkconfig --add redis-server
chkconfig --level 345 redis-server on

Start Redis:
```
service redis-server start
```
_
(optional) Add ‘vm.overcommit_memory = 1’ to /etc/sysctl.conf (otherwise background save may fail under low memory condition – according to info on Redis site):
> vm.overcommit_memory = 1
```
nano /etc/sysctl.conf
```
_
Activate the new sysctl change:
```
sysctl vm.overcommit_memory=1
```
_
Try pinging your instance with redis-cli:
```
/usr/local/bin/redis-cli ping
```
_
Do few tests with redis-cli and check that the dump file is correctly stored into /var/redis/6379/ (you should find a file called dump.rdb):
```
/usr/local/bin/redis-cli
>set testkey testval
>get testkey
>del testkey
>exit
```
_
Check that your Redis instance is correctly logging in the log file:
```
cat /var/log/redis_6379.log
```
_

And that would be basically it. Cheers.

mariuszprzydatek.com