記一次磁盤空間爆滿導(dǎo)致的持久化報(bào)錯(cuò)

環(huán)境：3.0.7 redis八節(jié)點(diǎn)集群4主4從 開發(fā)測試環(huán)境

操作：清除集群持久化數(shù)據(jù) 

#redis-cli -c -p 6383 -h 172.31.103.238 登陸之后

cluster nodes 察看節(jié)點(diǎn)信息 登陸master節(jié)點(diǎn)進(jìn)行刪除 flushall

在其中一個(gè)節(jié)點(diǎn)執(zhí)行時(shí)抱錯(cuò)：

172.31.103.238:6383> flushdb

(error) MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. Please check Redis logs for details about the error.

網(wǎng)上信息：

今天運(yùn)行Redis時(shí)發(fā)生錯(cuò)誤，錯(cuò)誤信息如下：

(error) MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on disk. Commands that may modify the data set are disabled. Please check Redis logs for details about the error.

Redis被配置為保存數(shù)據(jù)庫快照，但它目前不能持久化到硬盤。用來修改集合數(shù)據(jù)的命令不能用。請查看Redis日志的詳細(xì)錯(cuò)誤信息。

原因：

強(qiáng)制關(guān)閉Redis快照導(dǎo)致不能持久化。

解決方案：

運(yùn)行config set stop-writes-on-bgsave-error no　命令后，關(guān)閉配置項(xiàng)stop-writes-on-bgsave-error解決該問題。

root@ubuntu:/usr/local/redis/bin# ./redis-cli
127.0.0.1:6379> config set stop-writes-on-bgsave-error no
OK
127.0.0.1:6379> lpush myColour "red"
(integer) 1

察看自己配置文件：

stop-writes-on-bgsave-error yes

雖然是測試環(huán)境但是沒有立刻修改，登陸到相應(yīng)節(jié)點(diǎn)上

df -h 察看root滿了

[root@VM-172-31-103-238 /]#df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/vda3              35G   35G     0 100% /

查找到罪魁禍?zhǔn)资情_發(fā)搞的日志文件33g

確認(rèn)之后刪除之

刪除之后察看

[root@VM-172-31-103-238 /]#df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/vda3              35G   35G     0 100% /

沒有釋放

[root@VM-172-31-103-238 /]#lsof | grep delete

java      21037    root    1w      REG              252,3 35273113600     395356 /opt/server/logs/catalina.out (deleted)

java      21037    root    2w      REG              252,3 35273113600     395356 /opt/server/logs/catalina.out (deleted)

[root@VM-172-31-103-238 /]#kill -9 21037

[root@VM-172-31-103-238 /]#df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/vda3              35G  2.0G   32G   6% /

再次執(zhí)行 

[root@VM-172-31-103-73 /cluster]#redis-cli -c -p 6383 -h 172.31.103.238

172.31.103.238:6383> flushall

OK