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=== Redis Server ===
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Stop the redis server on all hosts.
{{{
service redis-server stop
}}}

To enable replication we need to consider one of the redis servers the master. Here it will be redis03. On the two other hosts add the following to `/etc/redis/redis.conf`.
{{{
slaveof 192.168.1.60 6379
}}}

Start the redis servers again, but start it on redis03 first.
{{{
service redis-server start
}}}
redis03 should now be the master.

=== Redis Sentinel ===

INCOMPLETE DO NOT USE

Redis

Redis is an in memory data structure storage. It will be used to share PHP-sessions between the apache servers. To guarantee a robust deployment three redis servers will be configured.

  • 192.168.1.58 redis01
  • 192.168.1.59 redis02
  • 192.168.1.60 redis03

Software

apt-get install redis-server redis-sentinel

Configuration

Redis Server

Make sure the apache servers can reach redis. Change bind 127.0.0.1 in /etc/redis/redis.conf. Each of the redis servers needs to listen on its own IP-address.

bind 127.0.0.1 192.168.1.58

Stop the redis server on all hosts.

service redis-server stop

To enable replication we need to consider one of the redis servers the master. Here it will be redis03. On the two other hosts add the following to /etc/redis/redis.conf.

slaveof 192.168.1.60 6379

Start the redis servers again, but start it on redis03 first.

service redis-server start

redis03 should now be the master.

Redis Sentinel

The same goes for /etc/redis/sentinel.conf

bind 127.0.0.1 192.168.1.58

References

None: Redis (last edited 2022-01-03 22:09:21 by Kristian Kallenberg)