背景:

之前resis只有一台服务器(redis  master),现需要为其增加一台slave服务器(slave),做成一主一从

要求,不影响 master的正常情况下完成 .

1、配置slave:

在slave的配置文件中,指定master即可

slaveof <masterip> 6379

2、启动slave后，查看slave和mater日志

salve：

4724:S 30 Aug 10:49:14.687 # Server started, Redis version 3.2.6

4724:S 30 Aug 10:49:14.690 * DB loaded from append only file: 0.002 seconds

4724:S 30 Aug 10:49:14.690 * The server is now ready to accept connections on port 6379

4724:S 30 Aug 10:49:14.690 * The server is now ready to accept connections at /tmp/redis_6379.sock

4724:S 30 Aug 10:49:14.690 * Connecting to MASTER 192.168.1.82:6379

4724:S 30 Aug 10:49:14.690 * MASTER <-> SLAVE sync started

4724:S 30 Aug 10:49:14.691 * Non blocking connect for SYNC fired the event.

4724:S 30 Aug 10:49:14.691 * Master replied to PING, replication can continue...

4724:S 30 Aug 10:49:14.692 * Partial resynchronization not possible (no cached master)

4724:S 30 Aug 10:49:20.601 * Full resync from master: 471f183e04fda3047a7c4e03bf68ec03a31203c1:4198265

master：

1698:M 30 Aug 10:49:14.669 * Slave 192.100.10.88:6379 asks for synchronization

1698:M 30 Aug 10:49:14.669 * Full resync requested by slave 192.100.10.88:6379

1698:M 30 Aug 10:49:14.669 * Delay next BGSAVE for diskless SYNC

1698:M 30 Aug 10:49:20.576 * Starting BGSAVE for SYNC with target: slaves sockets

1698:M 30 Aug 10:49:20.577 # Can't save in background: fork: Cannot allocate memory

1698:M 30 Aug 10:49:20.577 # BGSAVE for replication failed

数据未能同步到slave上。

master、slave修改内核变量

vi /etc/sysctl.conf

  vm.overcommit_memory=1

systctl -p

重启slave后，开始同步数据。

master：

1698:M 30 Aug 10:50:43.525 * Slave 192.168.1.88:6379 asks for synchronization

1698:M 30 Aug 10:50:43.525 * Full resync requested by slave 192.100.10.88:6379

1698:M 30 Aug 10:50:43.525 * Delay next BGSAVE for diskless SYNC

1698:M 30 Aug 10:50:49.788 * Starting BGSAVE for SYNC with target: slaves sockets

1698:M 30 Aug 10:50:49.819 * Background RDB transfer started by pid 18925

18925:C 30 Aug 10:50:49.970 * RDB: 1 MB of memory used by copy-on-write

1698:M 30 Aug 10:50:50.020 * Background RDB transfer terminated with success

1698:M 30 Aug 10:50:50.020 # Slave 192.168.1.88:6379 correctly received the streamed RDB file.

1698:M 30 Aug 10:50:50.020 * Streamed RDB transfer with slave 192.100.10.88:6379 succeeded (socket). Waiting for REPLCONF ACK from slave to enabl

e streaming

1698:M 30 Aug 10:50:50.557 * Synchronization with slave 192.100.10.88:6379 succeeded

1698:M 30 Aug 11:01:19.481 * Background append only file rewriting started by pid 31942

1698:M 30 Aug 11:01:19.581 * AOF rewrite child asks to stop sending diffs.

31942:C 30 Aug 11:01:19.581 * Parent agreed to stop sending diffs. Finalizing AOF...

31942:C 30 Aug 11:01:19.581 * Concatenating 0.00 MB of AOF diff received from parent.

31942:C 30 Aug 11:01:19.592 * SYNC append only file rewrite performed

31942:C 30 Aug 11:01:19.598 * AOF rewrite: 0 MB of memory used by copy-on-write

1698:M 30 Aug 11:01:19.688 * Background AOF rewrite terminated with success

1698:M 30 Aug 11:01:19.688 * Residual parent diff successfully flushed to the rewritten AOF (0.00 MB)

1698:M 30 Aug 11:01:19.688 * Background AOF rewrite finished successfully

slave：

4849:S 30 Aug 10:50:43.536 # Server started, Redis version 3.2.6

4849:S 30 Aug 10:50:43.537 * DB loaded from append only file: 0.000 seconds

4849:S 30 Aug 10:50:43.537 * The server is now ready to accept connections on port 6379

4849:S 30 Aug 10:50:43.537 * The server is now ready to accept connections at /tmp/redis_6379.sock

4849:S 30 Aug 10:50:43.537 * Connecting to MASTER 192.168.1.82:6379

4849:S 30 Aug 10:50:43.538 * MASTER <-> SLAVE sync started

4849:S 30 Aug 10:50:43.538 * Non blocking connect for SYNC fired the event.

4849:S 30 Aug 10:50:43.539 * Master replied to PING, replication can continue...

4849:S 30 Aug 10:50:43.540 * Partial resynchronization not possible (no cached master)

4849:S 30 Aug 10:50:49.801 * Full resync from master: 471f183e04fda3047a7c4e03bf68ec03a31203c1:4349163

4849:S 30 Aug 10:50:49.845 * MASTER <-> SLAVE sync: receiving streamed RDB from master

4849:S 30 Aug 10:50:49.977 * MASTER <-> SLAVE sync: Flushing old data

4849:S 30 Aug 10:50:49.977 * MASTER <-> SLAVE sync: Loading DB in memory

4849:S 30 Aug 10:50:50.056 * MASTER <-> SLAVE sync: Finished with success

4849:S 30 Aug 10:50:50.062 * Background append only file rewriting started by pid 4900

4849:S 30 Aug 10:50:50.247 * AOF rewrite child asks to stop sending diffs.

4900:C 30 Aug 10:50:50.247 * Parent agreed to stop sending diffs. Finalizing AOF...

4900:C 30 Aug 10:50:50.247 * Concatenating 0.00 MB of AOF diff received from parent.

4900:C 30 Aug 10:50:50.248 * SYNC append only file rewrite performed

4900:C 30 Aug 10:50:50.250 * AOF rewrite: 0 MB of memory used by copy-on-write

4849:S 30 Aug 10:50:50.268 * Background AOF rewrite terminated with success

4849:S 30 Aug 10:50:50.268 * Residual parent diff successfully flushed to the rewritten AOF (0.00 MB)

4849:S 30 Aug 10:50:50.268 * Background AOF rewrite finished successfully

redis主从同步错误处理的更多相关文章

  1. Redis系列之（二）：Redis主从同步，读写分离

    1. Redis主从同步 Redis支持主从同步.数据可以从主服务器向任意数量的从服务器上同步,同步使用的是发布/订阅机制. 2. 配置主从同步 Mater Slave的模式,从Slave向Maste ...

  2. Redis 主从配置和参数详解

    安装redis 下载redis wget http://download.redis.io/releases/redis-3.0.7.tar.gz 解压redis tar -xvf redis-.ta ...

  3. 基于Windows服务器集群的Redis主从配置指南

    前段时间一个项目因并发量大.因防止宕机做了主从备份,首页的表连接查询又非常的耗时.故此拿出利器Redis缓存这个查询结果,并随着用户操作而更新. 因官方目前只有linux版,Windows版下载:  ...

  4. redis 主从同步

    修改redis.conf配置文件 vi redis.conf 在编辑模式下 输入  /slaveof 来搜索 将slaveof启用 即 将#删除 依次配置所有 slave 并将进程 kill 掉 重启 ...

  5. redis主从 以及认证配置

    以前用redis用的很多,各种数据类型用的飞起,算是用得很溜了.不过那都是封装好的方法,自己直接调用.以前的公司比较规范,开发只是开发,很少去做跟运维相关的事情. 换了一份工作,不过这边项目刚开始起步 ...

  6. Redis-cluster集群【第三篇】：redis主从

    Redis主从复制原理: 通过把这个RDB文件或AOF文件传给slave服务器,slave服务器重新加载RDB文件,来实现复制的功能! 复制的话:主服务器可以有多个从服务器!!!  不仅这样从服务器还 ...

  7. Redis主从自动failover

    Redis主从架构持久化存在一个问题,即前次测试的结论,持久化需要配置在主实例上才能跨越实例保证数据不丢失,这样以来主实例在持久化数据到硬 盘的过程中,势必会造成磁盘的I/O等待,经过实际测试,这个持 ...

  8. redis主从遇到的两个坑

    最近在使用redis主从的时候做了下面两件事情: 1 希望redis主从从操作上分析,所有写操作都在master上写,所有读操作都在从上读. 2 由于redis的从是放在本地的,所以有的key的读写操 ...

  9. Redis主从配置详细过程

    Redis的主从复制功能非常强大,一个master可以拥有多个slave,而一个slave又可以拥有多个slave,如此下去,形成了强大的多级服务器集群架构.下面楼主简单的进行一下配置. 1.上面安装 ...

随机推荐

  1. Vue中v-if和v-show的使用场景

    1. 官方文档 https://cn.vuejs.org/v2/guide/conditional.html#v-if-vs-v-show 2. v-if 和 v-show 的区别 2.1 官方解释 ...

  2. [Luogu] 让我们异或吧

    https://www.luogu.org/problemnew/show/P2420 异或满足 A ^ B = B ^ A A ^ A = 0 0 ^ A = A #include <cstd ...

  3. idea导入项目之后包位置报错

    解决办法:

  4. scrapy框架之shell

    scrapy shell scrapy shell是一个交互式shell,您可以在其中快速调试 scrape 代码,而不必运行spider.它本来是用来测试数据提取代码的,但实际上您可以使用它来测试任 ...

  5. NTP 协议介绍

    NTP协议 NTP(Network Time Protocol,网络时间协议)是由RFC 1305定义的时间同步协议,用来在分布式时间服务器和客户端之间进行时间同步.NTP基于UDP报文进行传输,使用 ...

  6. 使用linux中，最让人无语的是软件源

    使用linux的最大的障碍是软件源的配置和系统的安装,这两个搞定了,坚持使用下去都不是问题,如果实在不行,还可以win10下的linux子系统可以作为基本的使用.下面记录两个软件源: Found 2 ...

  7. elasticsearch java索引的增删改查

    1.创建索引并插入数据 Map<String, Object> json = new HashMap<String, Object>(); json.put("use ...

  8. 去除IntelliJ IDEA对重复代码的检测

    方法1:  方法2:(比较简便) 

  9. 基本PSO算法实现(Java)

    一.算法流程 Step1:初始化一群粒子(粒子个数为50个),包括随即位置和速度: Step2:计算每个粒子的适应度fitness: Step3:对每个粒子,将其适应度与其进过的最好位置(局部)pbe ...

  10. Http的请求协议请求行介绍

    请求协议包含的内容 请求行 GET /day04-tomcat/index.jsp HTTP/1.1 HTTP/1.1: 表示的是我们使用的是http协议的1.1版本 请求头 请求空行 请求体: 存储 ...