kadirsert

# tail -50f /var/log/redis/redis-sentinel.log
2740:X 19 Feb 15:53:31.190 # +sdown master redis-cluster 192.168.1.11 6379
2740:X 19 Feb 15:53:31.261 # +odown master redis-cluster 192.168.1.11 6379 #quorum 2/2
2740:X 19 Feb 15:53:31.261 # +new-epoch 2
2740:X 19 Feb 15:53:31.261 # +try-failover master redis-cluster 192.168.1.11 6379
2740:X 19 Feb 15:53:31.270 # +vote-for-leader 7ec82e214b253e5b3762a2b003cb1a0c0b65adca 2
2740:X 19 Feb 15:53:31.275 # b31dda0048d0daeb5f33ebc683102ba8fd1a7368 voted for 7ec82e214b253e5b3762a2b003cb1a0c0b65adca 2
2740:X 19 Feb 15:53:31.275 # de37d92a0a179e5df009c6eadab99663b01f2c7c voted for 7ec82e214b253e5b3762a2b003cb1a0c0b65adca 2
2740:X 19 Feb 15:53:31.355 # +elected-leader master redis-cluster 192.168.1.11 6379
2740:X 19 Feb 15:53:31.355 # +failover-state-select-slave master redis-cluster 192.168.1.11 6379

kadirsert

# systemctl stop redis-server.service
#
#
# systemctl start redis-server.service

kadirsert

# redis-cli -h 192.168.1.11 -p 16379
192.168.1.11:16379> sentinel master redis-cluster
 1) "name"
 2) "redis-cluster"
 3) "ip"
 4) "192.168.1.11"
 5) "port"
 6) "6379"
 7) "runid"
 8) "a9a7b96ffd2d7ca6e137a1094e2e49c9b0947ed4"

kadirsert

# redis-cli
127.0.0.1:6379> auth password
OK
127.0.0.1:6379> info replication
# Replication
role:slave
master_host:192.168.1.11
master_port:6379
master_link_status:up
master_last_io_seconds_ago:1

kadirsert

# redis-cli
127.0.0.1:6379> auth password
OK
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=192.168.1.12,port=6379,state=online,offset=55795025,lag=0
slave1:ip=192.168.1.13,port=6379,state=online,offset=55795025,lag=0
master_replid:58342127af8c471b0308d221008e50a61b788b51

kadirsert

# systemctl daemon-reload
# systemctl enable redis-server.service
# systemctl enable redis-sentinel.service
# systemctl start redis-server.service
# systemctl start redis-sentinel.service

kadirsert

[Unit]
Description=Redis Sentinel
After=network.target

[Service]
User=redis
Group=redis
Environment=statedir=/var/run/sentinel
PermissionsStartOnly=true
PIDFile=/var/run/sentinel/redis.pid

kadirsert

[Unit]
Description=Redis In-Memory Data Store
After=network.target

[Service]
Type=forking
User=redis
Group=redis
LimitNOFILE=65536
Environment=statedir=/var/run/redis

kadirsert

bind 192.168.1.13
port 16379
sentinel monitor redis-cluster 192.168.1.11 6379 2
sentinel down-after-milliseconds -redis-cluster 5000
sentinel failover-timeout redis-cluster 60000
sentinel auth-pass redis-cluster password
logfile "/var/log/redis/redis-sentinel.log"

kadirsert

bind 192.168.1.12
port 16379
sentinel monitor redis-cluster 192.168.1.11 6379 2
sentinel down-after-milliseconds redis-cluster 5000
sentinel failover-timeout redis-cluster 60000
sentinel auth-pass redis-cluster password
logfile "/var/log/redis/redis-sentinel.log"