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標(biāo)題: keepalived+redis 主從，從掛掉恢復(fù)不能正常加入，必須要重啟keepalived [打印本頁(yè)]

作者: 夢(mèng)落花香Z 時(shí)間: 2014-03-13 10:27
標(biāo)題: keepalived+redis 主從，從掛掉恢復(fù)不能正常加入，必須要重啟keepalived
先說(shuō)一下我的環(huán)境
兩臺(tái)redis服務(wù)器分別為 192.168.5.234
                           192.168.5.236
用keepalived 實(shí)現(xiàn)主從切換。
                           192.168.5.234 和192.168.5.236依次啟動(dòng)，
                           5.234為主，5.236為輔
                           當(dāng)5.234掛掉之后，5.236為主，接管業(yè)務(wù)
                           5.234啟動(dòng)為從
                           當(dāng)5.236掛掉，5.234為主。

貼出一個(gè)keepalived的配置
vrrp_script chk_redis {
   script "/etc/keepalived/keepalived_scripts/redis_check.sh 127.0.0.1 6379"
   interval 1
}
vrrp_instance redis {
state BACKUP
interface eth0
virtual_router_id 51
priority 150
nopreempt
advert_int 1
authentication {
      auth_type PASS
      auth_pass redis6379
}
virtual_ipaddress {
      192.168.5.30
}
track_script {
      chk_redis
}
notify_master "/etc/keepalived/keepalived_scripts/redis_master_slave.sh 127.0.0.1 192.168.5.236 6379"
notify_backup "/etc/keepalived/keepalived_scripts/redis_backup_slave.sh 127.0.0.1 192.168.5.236 6379"
notify_fault  "/etc/keepalived/keepalived_scripts/redis_fault.sh"
notify_stop  "/etc/keepalived/keepalived_scripts/redis_stop.sh"
}

經(jīng)測(cè)試，主從切換沒(méi)有問(wèn)題。
但是當(dāng)我的從的redis掛掉了，修復(fù)以后啟動(dòng)并不能成為從，而是需要重啟keepalived才能成為從。
我看了下keepalived的日志，有檢測(cè)到從掛掉和啟動(dòng)了。但是沒(méi)有執(zhí)行任何notify 里面的腳本。notify里的腳本是有日志輸出的。
請(qǐng)大家?guī)臀曳治鱿逻@里面的原因，謝謝了。

作者: q1208c 時(shí)間: 2014-03-13 11:14

　為什么越來(lái)越多的人用　keepalived　來(lái)切換7層的應(yīng)用呢 .

作者: ding_cw 時(shí)間: 2014-03-28 14:44
state BACKUP 說(shuō)明是從

virtual_router_id 51 是優(yōu)先級(jí)別

一般需要設(shè)置主的優(yōu)先級(jí)大于從

作者: 寧?kù)o致遠(yuǎn)_guan 時(shí)間: 2015-12-28 17:01
我想說(shuō)，我的主從切換還有問(wèn)題呢，不知道為什么從一直沒(méi)法接管主的，一直報(bào)錯(cuò)[root@localhost scripts]# tailf /var/log/keepalived-redis-state.log
Run SLAVEOF cmd ...
ERR wrong number of arguments for 'slaveof' command

[master]
Mon Dec 28 16:42:46 CST 2015
Being master....
Run SLAVEOF cmd ...
Could not connect to Redis at -p:6379: Name or service not known
Run SLAVEOF NO ONE cmd ...
Could not connect to Redis at -p:6379: Name or service not known

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