Configurable HAProxy Advanced Redis Health Check

[fititnt]

Configurable HAProxy Advanced Redis Health Check

[fititnt]

Good to know that the official HAProxy configuration for redis have at https://www.haproxy.com/blog/haproxy-advanced-redis-health-check/ seems to not work with lastest version of HAProxy because of missings "".

So what in the documentation was

backend bk_redis
 option tcp-check
 tcp-check send PINGrn
 tcp-check expect string +PONG
 tcp-check send info replicationrn
 tcp-check expect string role:master
 tcp-check send QUITrn
 tcp-check expect string +OK
 server R1 10.0.0.11:6379 check inter 1s
 server R2 10.0.0.12:6379 check inter 1s

Should be more like

(...)
     tcp-check send PING\r\n
     tcp-check expect string +PONG
     tcp-check send info\ replication\r\n
     tcp-check expect string role:master
     tcp-check send QUIT\r\n
     tcp-check expect string +OK
     server delta 173.249.10.99:6379 check inter 5s
     server echo 167.86.127.220:6379 check inter 5s
     server foxtrot 167.86.127.225:6379 check inter 5s

[fititnt]

I put this on-hold for now.

This is not a priority for the ALB v0.8.x and clustering related options #17, in special because of this commend #22 (comment) and the MVP of Consul storage adapter to lua-resty-auto-ssl #25 have a working redis cluster is not a strong requisite.

Anyway, have this type of health check still very interesting. Maybe will do it if start to make AP-ALB also have health checks for other databases like MariaDB