
Redis 서버를 Replica 형태로 구성하고, sentinel을 사용하여 HA를 제공하도록 confing 파일 샘플을 작성해보았습니다.
예상 운영 환경
- VM x 3대
- Redis: master - replica1 - replica2
- Sentinel: sentinel - sentinel - sentinel
redis.conf 예제
RDB, AOF, Replica를 설정하고, TLS, ACL는 사용하지 않도록 설정하였습니다.
################################## NETWORK #####################################
bind 0.0.0.0
protected-mode yes
port 6379
tcp-backlog 511
timeout 0
tcp-keepalive 300
################################# GENERAL #####################################
daemonize yes
supervised auto
pidfile /run/redis/redis-server.pid
loglevel notice
logfile /var/log/redis/redis-server.log
databases 16
always-show-logo no
set-proc-title yes
proc-title-template "{title} {listen-addr} {server-mode}"
################################ SNAPSHOTTING ################################
save 900 1000000
save 300 500000
save 60 100000
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir /var/lib/redis
stop-writes-on-bgsave-error yes
rdb-del-sync-files no
################################# REPLICATION #################################
# replicaof <masterip> <masterport>
# masterauth <master-password>
# masteruser <username>
replica-serve-stale-data yes
replica-read-only yes
repl-backlog-size 16mb
repl-backlog-ttl 3600
replica-priority 100
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-diskless-load disabled
repl-disable-tcp-nodelay no
################################## SECURITY ###################################
# requirepass foobared
acllog-max-len 128
################################### CLIENTS ####################################
maxclients 10000
############################## MEMORY MANAGEMENT ################################
maxmemory 5gb
maxmemory-policy allkeys-lru
############################# LAZY FREEING ####################################
lazyfree-lazy-eviction yes
lazyfree-lazy-expire yes
lazyfree-lazy-server-del no
replica-lazy-flush no
lazyfree-lazy-user-del no
lazyfree-lazy-user-flush no
################################ THREADED I/O #################################
io-threads 4
############################ KERNEL OOM CONTROL ##############################
oom-score-adj no
oom-score-adj-values 0 200 800
#################### KERNEL transparent hugepage CONTROL ######################
disable-thp yes
############################## APPEND ONLY MODE ###############################
appendonly yes
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
################################ LUA SCRIPTING ###############################
lua-time-limit 5000
################################## SLOW LOG ###################################
slowlog-log-slower-than 10000
slowlog-max-len 128
################################ LATENCY MONITOR ##############################
latency-monitor-threshold 0
############################# EVENT NOTIFICATION ##############################
notify-keyspace-events ""
############################### ADVANCED CONFIG ###############################
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
########################### ACTIVE DEFRAGMENTATION #######################
activedefrag yes
active-defrag-ignore-bytes 50mb
active-defrag-threshold-lower 10
active-defrag-threshold-upper 100
active-defrag-cycle-min 1
active-defrag-cycle-max 25
jemalloc-bg-thread yes
sentinel 예제
################################## GENERAL ####################################
bind 0.0.0.0
protected-mode yes
port 26379
daemonize yes
supervised auto
pidfile "/run/sentinel/redis-sentinel.pid"
logfile "/var/log/redis/redis-sentinel.log"
dir "/var/lib/redis"
requirepass mysentinelpassword
################################## CLUSTER ####################################
sentinel monitor mymaster 127.0.0.1 6379 2
sentinel auth-pass mymaster mypassword
sentinel down-after-milliseconds mymaster 5000
sentinel failover-timeout mymaster 180000
sentinel parallel-syncs mymaster 1
acllog-max-len 128
sentinel deny-scripts-reconfig yes
sentinel resolve-hostnames no
sentinel announce-hostnames no
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