| Highly-Available Redis Backend for an HST Server Cluster |
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2.
On the Redis primary node, create (or edit an existing)
/opt/aspera/etc/redis.conf
with the following
values:
bind
private_ip_address
port 31415
daemonize yes
pidfile /opt/aspera/var/run/redis.31415.pid
/opt/aspera/var/run/redis_31415.log
tcp-keepalive 300
dbfilename /opt/aspera/var/redis.31415.rdb
dir /opt/aspera/var
save 900 1
protected-mode no #turn off password protection
Where
private_ip_address
is the private IP address of the node.
Note:
If you want Redis to use the system logger, comment out
/opt/aspera/var/run/
redis_31415.log
and set
syslog-enabled
to
yes
. For example:
#/opt/aspera/var/run/redis_31415.log
syslog-enabled yes
Configure other syslog parameters, if desired.
Save your changes and close the file.
3.
On the Redis replica nodes, create (or edit an existing)
/opt/aspera/etc/redis.conf
with the following
values:
slave of
primary_ip_address
31415
bind
private_ip_address
port 31415
daemonize yes
pidfile /opt/aspera/var/run/redis.31415.pid
/opt/aspera/var/run/redis_31415.log
tcp-keepalive 300
dbfilename /opt/aspera/var/redis.31415.rdb
dir /opt/aspera/var
save 900 1
protected-mode no #turn off password protection
Where:
•
primary_ip_address
is the private IP address of the primary node
•
private_ip_address
is the private IP address of the local replica node
Configure logging as you did on the primary node.
Save your changes and close the file.
4.
On each node, configure Redis Sentinel.
a) Open port 26379 in
iptables
.
b) Open
/opt/aspera/etc/sentinel.conf
and add or edit the following lines:
port 26379
bind
private_ip_address
sentinel monitor
primary_name
primary_ip_address
31415
quorum
sentinel down-after-milliseconds
primary_name
down_time
sentinel failover-timeout
primary_name
timeout
logfile "/opt/aspera/etc/redis-sentinel.log"
Where:
