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Redis自動化安裝以及集群實現

[日期:2019-09-19] 來源:Linux社區  作者:wy123 [字體: ]

Redis實例安裝

安裝說明:自動解壓縮安裝包,按照指定路徑編譯安裝,復制配置文件模板到Redis實例路的數據徑下,根據端口號修改配置文件模板

配置文件,當前shell腳本,安裝包

參數1:basedir,redis安裝包路徑

參數2:安裝實例路徑

參數3:安裝包名稱

參數4:安裝實例的端口號

#!/bin/bash
set -e
if [ $# -lt 4 ]; then
        echo "$(basename $0): Missing script argument"
        echo "$(installdir $0) [installfilename] [port] "
        exit 9
fi
PotInUse=`netstat -anp |  awk '{print $4}'  | grep $4 | wc -l`
if [ $PotInUse -gt 0 ];then
  echo "ERROR" $4 "Port is used by another process!"
  exit 9
fi
basedir=$1
installdir=$2
installfilename=$3
port=$4
cd $basedir
tar -zxvf $installfilename.tar.gz  >/dev/null 2>&1 &
cd $installfilename
mkdir -p $installdir
make PREFIX=$installdir install
sleep 1s
cp $basedir/redis.conf $installdir

sed -i "s/instance_port/$port/g"  $installdir/redis.conf
sleep 1s
cd $installdir
./bin/redis-server redis.conf >/dev/null 2>&1 &

配置文件模板

################################## INCLUDES ###################################
# include /path/to/local.conf
# include /path/to/other.conf

################################## MODULES #####################################
# loadmodule /path/to/my_module.so
# loadmodule /path/to/other_module.so

################################## NETWORK #####################################
bind 127.0.0.1 & your ip
port instance_port
tcp-backlog 511
timeout 0
tcp-keepalive 300

################################# GENERAL #####################################
daemonize yes
supervised no
pidfile ./redis_instance_port.pid
loglevel notice
logfile ./redis_log.log
databases 16
always-show-logo yes

################################ SNAPSHOTTING  ################################
save 900 1
save 300 10
save 60 10000

stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./

################################# REPLICATION #################################
# masterauth <master-password>
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100

################################## SECURITY ###################################
requirepass your_passwrod

################################### CLIENTS ####################################
# maxclients 10000

############################## MEMORY MANAGEMENT ################################
# maxmemory <bytes>
# maxmemory-policy noeviction
# maxmemory-samples 5
# replica-ignore-maxmemory yes

############################# LAZY FREEING ####################################
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no

############################## APPEND ONLY MODE ###############################
appendonly no

appendfilename "appendonly.aof"

# appendfsync always
appendfsync everysec
# appendfsync no

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

################################ REDIS CLUSTER  ###############################
cluster-enabled yes
# cluster-replica-validity-factor 10
# cluster-require-full-coverage yes
# cluster-replica-no-failover no


########################## CLUSTER DOCKER/NAT support  ########################


################################## 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
# client-query-buffer-limit 1gb
# proto-max-bulk-len 512mb
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes


########################### ACTIVE DEFRAGMENTATION #######################

# Enabled active defragmentation
# activedefrag yes
# Minimum amount of fragmentation waste to start active defrag
# active-defrag-ignore-bytes 100mb
# Minimum percentage of fragmentation to start active defrag
# active-defrag-threshold-lower 10
# Maximum percentage of fragmentation at which we use maximum effort
# active-defrag-threshold-upper 100
# Minimal effort for defrag in CPU percentage
# active-defrag-cycle-min 5
# Maximal effort for defrag in CPU percentage
# active-defrag-cycle-max 75
# Maximum number of set/hash/zset/list fields that will be processed from
# the main dictionary scan
# active-defrag-max-scan-fields 1000

安裝示例
sh redis_install.sh /usr/local/redis/   /usr/local/redis5/redis9008/  redis-5.0.4  9008

Redi實例的目錄結構

基于Python的Redis自動化集群實現

基于Python的自動化集群實現,初始化節點為node_1~node_6,節點實例需要為集群模式,三主三從,自動化集群,分配slots,加入從節點,3秒鐘左右完成

import redis

#master
node_1 = {'host': '127.0.0.1', 'port': 9001, 'password': '***'}
node_2 = {'host': '127.0.0.1', 'port': 9002, 'password': '***'}
node_3 = {'host': '127.0.0.1', 'port': 9003, 'password': '***'}
#slave
node_4 = {'host': '127.0.0.1', 'port': 9004, 'password': '***'}
node_5 = {'host': '127.0.0.1', 'port': 9005, 'password': '***'}
node_6 = {'host': '127.0.0.1', 'port': 9006, 'password': '***'}

redis_conn_1 = redis.StrictRedis(host=node_1["host"], port=node_1["port"], password=node_1["password"])
redis_conn_2 = redis.StrictRedis(host=node_2["host"], port=node_2["port"], password=node_2["password"])
redis_conn_3 = redis.StrictRedis(host=node_3["host"], port=node_3["port"], password=node_3["password"])

# cluster meet
redis_conn_1.execute_command("cluster meet {0} {1}".format(node_2["host"],node_2["port"]))
redis_conn_1.execute_command("cluster meet {0} {1}".format(node_3["host"],node_3["port"]))
print('#################flush slots #################')
redis_conn_1.execute_command('cluster flushslots')
redis_conn_2.execute_command('cluster flushslots')
redis_conn_3.execute_command('cluster flushslots')
print('#################add slots#################')
for i in range(0,16383+1):
    if i <= 5461:
        try:
            redis_conn_1.execute_command('cluster addslots {0}'.format(i))
        except:
            print('cluster addslots {0}'.format(i) +' error')
    elif 5461 < i and i <= 10922:
        try:
            redis_conn_2.execute_command('cluster addslots {0}'.format(i))
        except:
            print('cluster addslots {0}'.format(i) + ' error')
    elif 10922 < i:
        try:
            redis_conn_3.execute_command('cluster addslots {0}'.format(i))
        except:
            print('cluster addslots {0}'.format(i) + ' error')
print()
print('#################cluster status#################')
print()
print('##################'+str(node_1["host"])+':'+str(node_1["port"])+'##################')
print(str(redis_conn_1.execute_command('cluster info'), encoding = "utf-8").split("\n")[0])
print('##################'+str(node_2["host"])+':'+str(node_2["port"])+'##################')
print(str(redis_conn_1.execute_command('cluster info'), encoding = "utf-8").split("\n")[0])
print('##################'+str(node_3["host"])+':'+str(node_3["port"])+'##################')
print(str(redis_conn_1.execute_command('cluster info'), encoding = "utf-8").split("\n")[0])

#slave cluster meet
redis_conn_1.execute_command("cluster meet {0} {1}".format(node_4["host"],node_4["port"]))
redis_conn_2.execute_command("cluster meet {0} {1}".format(node_5["host"],node_5["port"]))
redis_conn_3.execute_command("cluster meet {0} {1}".format(node_6["host"],node_6["port"]))


#cluster nodes
print(str(redis_conn_1.execute_command('cluster nodes'), encoding = "utf-8"))

示例

這樣一個Redis的集群,從實例的安裝到集群的安裝,環境依賴本身沒有問題的話,基本上1分鐘之內可以完成這個搭建過程。

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