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關(guān)于keepalived的詳細(xì)介紹，請(qǐng)移步本人相關(guān)博客：http://wangfeng7399.blog.51cto.com/3518031/1405785

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功能	ip地址	安裝軟件
主redis	10.13.6.13	redis，keepalived
從redis	10.13.6.16	redis，keepalived
VIP	10.13.6.17	?

一、redis主從搭建

????1.redis安裝

????本文通過yum源的安裝方式來安裝（需要配置epel源），也可以通過源碼編譯的方式來安裝 ?

1 2	[root@P2Pp_Red01?~]#?yum?install?-y?redis [root@P2Pp_Red02?~]#?yum?install?-y?redis

????2.修改配置文件

????????①、主redis需要修改的文件及內(nèi)容

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[root@P2Pp_Red01?~]#?vi?/etc/redis.conf bind?0.0.0.0 其余都可以安裝默認(rèn)狀態(tài)

????????②、從redis需要修改的文件及內(nèi)容

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[root@P2Pp_Red02?~]#?vi?/etc/redis.conf bind?0.0.0.0 slaveof?10.13.6.13?6379?//指定主redis的地址與端口

????3.查看主從狀態(tài)

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[root@P2Pp_Red01?~]#?redis-cli?INFO?|grep?role?-A?3 role:master slave0:10.13.6.16,45270,online db0:keys=6,expires=0 [root@P2Pp_Red02?~]#??redis-cli?INFO?|grep?role?-A?3 role:slave master_host:10.13.6.13 master_port:6379 master_link_status:up

二、使用keepalived對(duì)redis做高可用

????1.安裝keepalived，兩臺(tái)機(jī)器都需要安裝

1 2	[root@P2Pp_Red01?~]#?yum?install?-y?keepalived [root@P2Pp_Red02?~]#?yum?install?-y?keepalived

????2.準(zhǔn)備配置文件

????????①、主redis的配置文件,關(guān)于各行代表的意思，請(qǐng)移步我的另外一篇文檔，鏈接見文章開頭

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[root@P2Pp_Red01?scripts]#?vi?/etc/keepalived/keepalived.conf !?Configuration?File?for?keepalived global_defs?{ ???notification_email?{ ?????acassen@firewall.loc ?????failover@firewall.loc ?????sysadmin@firewall.loc ???} ???notification_email_from?Alexandre.Cassen@firewall.loc ???smtp_server?10.13.4.17 ???smtp_connect_timeout?30 ???router_id?LVS_DEVEL } vrrp_script?chk_redis?{ ????script?"killall?-0?redis-server" ????interval?2 } vrrp_instance?VI_1?{ ????state?MASTER ????interface?eth0 ????virtual_router_id??100 ????priority?100 ????advert_int?1 ????authentication?{ ????????auth_type?PASS ????????auth_pass?1111 ????} ????virtual_ipaddress?{ ????????10.13.6.17 ????} track_script?{ ????chk_redis } ????????notify_master?/etc/keepalived/scripts/redis_master.sh ????????notify_backup?/etc/keepalived/scripts/redis_backup.sh ????????notify_fault??/etc/keepalived/scripts/redis_fault.sh ????????notify_stop???/etc/keepalived/scripts/redis_stop.sh } ~[root@P2Pp_Red01?~]#?vi?/etc/keepalived/scripts/redis_master.sh? #!/bin/bash REDISCLI="/usr/bin/redis-cli" LOGFILE="/var/log/keepalived-redis-state.log" echo?"[master]"?>>?$LOGFILE date?>>?$LOGFILE echo?"Being?master...."?>>?$LOGFILE?2>&1 echo?"Run?SLAVEOF?cmd?..."?>>?$LOGFILE $REDISCLI?SLAVEOF?10.13.4.13?6379?>>?$LOGFILE??2>&1 sleep?10 #延遲10秒以后待數(shù)據(jù)同步完成后再取消同步狀態(tài) echo?"Run?SLAVEOF?NO?ONE?cmd?..."?>>?$LOGFILE $REDISCLI?SLAVEOF?NO?ONE?>>?$LOGFILE?2>&1 ~ [root@P2Pp_Red01?~]#?vi?/etc/keepalived/scripts/redis_backup.sh? #!/bin/bash REDISCLI="/usr/bin/redis-cli" LOGFILE="/var/log/keepalived-redis-state.log" echo?"[backup]"?>>?$LOGFILE date?>>?$LOGFILE echo?"Being?slave...."?>>?$LOGFILE?2>&1 sleep?15 #延遲15秒待數(shù)據(jù)被對(duì)方同步完成之后再切換主從角色 echo?"Run?SLAVEOF?cmd?..."?>>?$LOGFILE $REDISCLI?SLAVEOF?10.13.4.13?6379?>>?$LOGFILE??2>&1 [root@P2Pp_Red01?scripts]#?vi?/etc/keepalived/scripts/redis_stop.sh? #!/bin/bash LOGFILE=/var/log/keepalived-redis-state.log echo?"[stop]"?>>?$LOGFILE date?>>?$LOGFILE [root@P2Pp_Red01?scripts]#?vi?/etc/keepalived/scripts/redis_fault.sh? #!/bin/bash GFILE=/var/log/keepalived-redis-state.log echo?"[fault]"?>>?$LOGFILE date?>>?$LOGFILE ~

????????②、準(zhǔn)備從redis的配置文件

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[root@P2Pp_Red02?~]#?vi?/etc/keepalived/keepalived.conf !?Configuration?File?for?keepalived global_defs?{ ???notification_email?{ ?????acassen@firewall.loc ?????failover@firewall.loc ?????sysadmin@firewall.loc ???} ???notification_email_from?Alexandre.Cassen@firewall.loc ???smtp_server?10.13.4.13 ???smtp_connect_timeout?30 ???router_id?LVS_DEVEL } vrrp_script?chk_redis?{ ????script?"killall?-0?redis-server" ????interval?1 } vrrp_instance?VI_1?{ ????state?BACKUP ????interface?eth0 ????virtual_router_id?100 ????priority?99 ????advert_int?1 ????authentication?{ ????????auth_type?PASS ????????auth_pass?1111 ????} ????virtual_ipaddress?{ ????????10.13.6.17 ????} #track_script?{ #????chk_redis #} #????????notify_master?/etc/keepalived/scripts/redis_master.sh #????????notify_backup?/etc/keepalived/scripts/redis_backup.sh #????????notify_fault??/etc/keepalived/scripts/redis_fault.sh #????????notify_stop???/etc/keepalived/scripts/redis_stop.sh [root@P2Pp_Red02?~]#?vi?/etc/keepalived/scripts/redis_master.sh? #!/bin/bash REDISCLI="/usr/bin/redis-cli" LOGFILE="/var/log/keepalived-redis-state.log" echo?"[master]"?>>?$LOGFILE date?>>?$LOGFILE echo?"Being?master...."?>>?$LOGFILE?2>&1 echo?"Run?SLAVEOF?cmd?..."?>>?$LOGFILE $REDISCLI?SLAVEOF?10.13.6.13?6379?>>?$LOGFILE??2>&1 sleep?10 #延遲10秒以后待數(shù)據(jù)同步完成后再取消同步狀態(tài) echo?"Run?SLAVEOF?NO?ONE?cmd?..."?>>?$LOGFILE $REDISCLI?SLAVEOF?NO?ONE?>>?$LOGFILE?2>&1 ~ [root@P2Pp_Red02?~]#?vi?/etc/keepalived/scripts/redis_backup.sh? #!/bin/bash REDISCLI="/usr/bin/redis-cli" LOGFILE="/var/log/keepalived-redis-state.log" echo?"[backup]"?>>?$LOGFILE date?>>?$LOGFILE echo?"Being?slave.... sleep?15 #延遲15秒待數(shù)據(jù)被對(duì)方同步完成之后再切換主從角色 echo?"Run?SLAVEOF?cmd?..."?>>?$LOGFILE $REDISCLI?SLAVEOF?10.13.6.13?6379?>>?$LOGFILE??2>&1 其余的兩個(gè)文件跟主redis是一樣的

本處將不再給模擬故障，但是測(cè)試時(shí)通過的，現(xiàn)在已經(jīng)在生產(chǎn)環(huán)境中使用

本文出自 “IT民工--小楓” 博客，請(qǐng)務(wù)必保留此出處http://wangfeng7399.blog.51cto.com/3518031/1591275

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轉(zhuǎn)載于:https://www.cnblogs.com/davidwang456/p/4180378.html

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