• codis


    总体架构

    系统架构

    192.168.199.223(zookeeper、codis-proxy、codis-dashborad:18080、codis-fe:18090、codis-server)

    192.168.199.224(zookeeper、codis-server)

    192.168.199.254(zookeeper、codis-proxy、codis-server)

    一,zookeeper
    作用:用于存放数据路由表。
    描述:zookeeper简称zk。在生产环境中,zk部署越多,其可靠性越高。由于zk集群是以宕机个数过半才会让整个集群宕机,因此,奇数个zk更佳。
    部署:按照1.2中的部署规划,将在如下几台机器上部署该程序。

    序号        IP                           主机名                   部署程序
    01       192.168.199.223       test         zookeeper:2181
    02   192.168.199.224           jason_1     zookeeper:2181
    03   192.168.199.254           jason_2       zookeeper:2181

    1.修改hosts文件

    #该文件三台主机保持一致

    [root@test ~]# cat /etc/hosts
    127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
    ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
    192.168.199.223    node1
    192.168.199.224    node2
    192.168.199.254    node3        

     2.Java环境(请查看 https://www.cnblogs.com/xiaoyou2018/p/9945272.html)

    3.zookeeper

    wget http://ftp.wayne.edu/apache/zookeeper/zookeeper-3.4.13/zookeeper-3.4.13.tar.gz

    解压

    tar -zxvf zookeeper-3.4.13.tar.gz -C /usr/local/zookeeper/

    mv zookeeper-3.4.13 zookeeper

    [root@jason tools]# cd /usr/local/zookeeper/conf
    [root@jason tools]# cp zoo_sample.cfg  zoo.cfg
    [root@jason conf]#
    cat zoo.cfg maxClientCnxns=50 tickTime=2000 initLimit=10 syncLimit=5 dataDir=/data/zookeeper ###dataLogDir=/data/zookeeper/log clientPort=2181 server.1=node1:2888:3888 server.2=node2:2888:3888 server.3=node3:2888:3888
    [root@jason tools]#mkdir -p /data

    说明:server.A=B:C:D:其中 A 是一个数字,表示这个是第几号服务器;B 是这个服务器的 ip 地址;C 表示的是这个服务器与集群中的 Leader 服务器交换信息的端口;D 表示的是万一集群中的 Leader 服务器挂了,需要一个端口来重新进行选举,选出一个新的 Leader,而这个端口就是用来执行选举时服务器相互通信的端口。如果是伪集群的配置方式,由于 B 都是一样,所以不同的 Zookeeper 实例通信端口号不能一样,所以要给它们分配不同的端口号。

    第三步:其他处理
    创建第二步中的dataDir目录,并设置当前zk的结点ID。[注:在192.168.199.223、224、254上ID值各不相同]

    echo 1 > /data/zookeeper/myid   (在223上)
    echo 2 > /data/zookeeper/myid  (在224上)

    echo 13> /data/zookeeper/myid   (在254上)

    依次启动各个服务器的zookeeper服务 (要全部zookeeper角色的服务器都依次启动,不然查看status会报错)
    [root@test ~]# cd /usr/local/zookeeper/bin/
    [root@test bin]# ./zkServer.sh start
    ZooKeeper JMX enabled by default
    Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
    Starting zookeeper ... STARTED

    查看角色状态

    [root@test bin]# ./zkServer.sh status

    192.168.199.223

    192.168.199.224

     启动失败 查看 https://blog.csdn.net/weiyongle1996/article/details/73733228

    ./zkServer.sh start-foreground

     安装go环境

     wget https://dl.google.com/go/go1.11.2.linux-amd64.tar.gz

    tar -zxvf go1.11.2.linux-amd64.tar.gz -C /usr/local/

    配置环境变量(/etc/profile  添加)

    export JAVA_HOME=/usr/local/java/jdk1.8.0_191
    JRE_HOME=${JAVA_HOME}/jre
    CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
    PATH=${JAVA_HOME}/bin:$PATH
    export GOROOT=/usr/local/go
    export GOPATH=/usr/local/codis
    export PATH=$PATH:/usr/local/go/bin
    #JAVA_HOME=/usr/local/jdk
    #CLASS_PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/lib
    #export ZOOKEEPER_HOME=/usr/local/zookeeper-3.4.6
    export PATH=$PATH:$GOROOT/bin:$JAVA_HOME/bin:$ZOOKEEPER_HOME/bin

    [root@jason go]# source /etc/profile

    [root@jason go]# go version
    go version go1.11.2 linux/amd64

     下载编译codis

    mkdir -p $GOPATH/src/github.com/CodisLabs
    cd $_ && git clone https://github.com/CodisLabs/codis.git -b release3.2
    cd $GOPATH/src/github.com/CodisLabs/codis
    make

    再次介绍一下codis的各个组件,以明确在集群中应该如何启动
    Codis Server:基于 redis-3.2.8 分支开发。增加了额外的数据结构,以支持 slot 有关的操作以及数据迁移指令。具体的修改可以参考文档 redis 的修改。在集群中充当redis实例。
    Codis Proxy:客户端连接的 Redis 代理服务, 实现了 Redis 协议。 除部分命令不支持以外(不支持的命令列表),表现的和原生的 Redis 没有区别(就像 Twemproxy)。对于同一个业务集群而言,可以同时部署多个 codis-proxy 实例;不同 codis-proxy 之间由 codis-dashboard 保证状态同步。
    Codis Dashboard:集群管理工具,支持 codis-proxy、codis-server 的添加、删除,以及据迁移等操作。在集群状态发生改变时,codis-dashboard 维护集群下所有 codis-proxy 的状态的一致性。
    Codis FE:集群管理界面
    在node1启动FE和Dashboard用来管理集群;
    node1和node3启动codis-proxy;
    node1,node2,node3启动codis-server
    首先启动Dashboard,关联zookeeper集群,将dashboard信息保存在zookeeper集群中,FE通过读取zookeeper中保存的dashboard信息来连接需要被管理的集群。

     #启动dashboard,将coordinator修改为zookeeper模式,自定义product_name和auth

    [root@test bin]# cd $GOPATH/src/github.com/CodisLabs/codis
    [root@test codis]# cd config/
    [root@test config]# cat dashboard.toml
    
    ##################################################
    #                                                #
    #                  Codis-Dashboard               #
    #                                                #
    ##################################################
    
    # Set Coordinator, only accept "zookeeper" & "etcd" & "filesystem".
    # for zookeeper/etcd, coorinator_auth accept "user:password" 
    # Quick Start
    #coordinator_name = "filesystem"
    #coordinator_addr = "/tmp/codis"
    coordinator_name = "zookeeper"
    coordinator_addr = "node1:2181,node2:2181,node3:2181"
    #coordinator_auth = ""
    
    # Set Codis Product Name/Auth.
    product_name = "codis-demo"
    product_auth = "123456"
    
    # Set bind address for admin(rpc), tcp only.
    admin_addr = "0.0.0.0:18080"
    
    # Set arguments for data migration (only accept 'sync' & 'semi-async').
    migration_method = "semi-async"
    migration_parallel_slots = 100
    migration_async_maxbulks = 200
    migration_async_maxbytes = "32mb"
    migration_async_numkeys = 500
    migration_timeout = "30s"
    
    # Set configs for redis sentinel.
    sentinel_client_timeout = "10s"
    sentinel_quorum = 2
    sentinel_parallel_syncs = 1
    sentinel_down_after = "30s"
    sentinel_failover_timeout = "5m"
    sentinel_notification_script = ""
    sentinel_client_reconfig_script = ""

     启动dashboard

    cd $GOPATH/src/github.com/CodisLabs/codis/admin
    [root@test admin]# ./codis-dashboard-admin.sh start

    启动FE 

    cd $GOPATH/src/github.com/CodisLabs/codis
    [root@test bin]# nohup ./bin/codis-fe --ncpu=1 --log=/usr/local/codis/src/github.com/CodisLabs/codis/log/fe.log --log-level=WARN --zookeeper=node1:2181 --listen=0.0.0.0:9090 &
    [1] 3634 [root@test bin]# nohup: ignoring input and appending output to ‘nohup.out’

     启东失败可以查看日志

     登录监听的9090端口查看FE管理界面,接下来集群操作可在FE中完成

    http://192.168.199.223:9090

     启动两个codis-proxy,

    分别修改node1和node3的proxy.toml配置文件

    [root@test config]# cat proxy.toml |grep -Ev '^$|^#'
    product_name = "codis-demo"
    product_auth = "123456"
    session_auth = "56789" 
    admin_addr = "0.0.0.0:11080" 
    proxy_addr = "0.0.0.0:19000"
    jodis_name = "zookeeper"
    jodis_addr = "192.168.199.223:2181,192.168.199.224:2181,192.168.199.254:2181"
    jodis_timeout = "20s"
    session_recv_timeout = "0s"

    product_name = "chatroom" # 设置项目名
    product_auth = "123456" # 设置登录dashboard的密码(注意:与redis中requirepass一致)

    session_auth = "56789" # Redis客户端的登录密码(注意:与redis中requirepass不一致)
    # Set bind address for admin(rpc), tcp only.
    admin_addr = "0.0.0.0:11080"
    # Set bind address for proxy, proto_type can be “tcp”,”tcp4”, “tcp6”, “unix”
    or “unixpacket”.
    proto_type = “tcp4”
    proxy_addr = "0.0.0.0:19000" #绑定端口(Redis客户端连接此端口)
    # 外部存储
    jodis_name = "zookeeper" # 外部存储类型
    jodis_addr = “192.168.199.223:2181,192.168.199.224:2181,192.168.199.254:2181” # 外部存储列表
    jodis_timeout = “20s”
    #会话设置
    session_recv_timeout = “0s” #如果不为0可能导致应用程序出现”write: broken pipe”的问题

    启动proxy
    ./admin/codis-proxy-admin.sh start

    #因为node1上同时存在proxy和dashboard,启动proxy后,proxy会自动连接127.0.0.1的dashboard,node3的proxy需要在FE中添加到dashboard。使用admin_addr配置参数连接。启动proxy后,尽快执行new proxy操作,默认30秒超时,超时后退出proxy进程。

    报错的话可以查看日志
    cd $GOPATH/src/github.com/CodisLabs/codis/log
    [root@jason log]# ls
    codis-proxy.log.2018-12-28  codis-proxy.log.2018-12-29  codis-proxy.log.2019-01-02  codis-proxy.out

    redis(三台主机一样)
    [root@test codis]# cd $GOPATH/src/github.com/CodisLabs/codis/config
    cp -r redis.conf  redis-6379.conf
    cp -r redis.conf  redis-6380.conf

    6379主配置、6380从配置

    cat redis-6379.conf
    daemonize yes 
    pidfile /usr/loca/codis/proc/redis-6379.pid
    port 6379
    timeout 86400 
    tcp-keepalive 60 
    loglevel notice 
    logfile /usr/local/codis/log/redis-6379.log
    databases 16 
    save “” 
    save 900 1 
    save 300 10 
    save 60 10000 
    stop-writes-on-bgsave-error no 
    rdbcompression yes 
    dbfilename dump-6379.rdb
    dir /usr/local/codis/data/redis_data_6379
    masterauth "123456"
    slave-serve-stale-data yes 
    repl-disable-tcp-nodelay no 
    slave-priority 100 
    requirepass "123456"
    maxmemory 10gb 
    maxmemory-policy allkeys-lru 
    appendonly no 
    appendfsync everysec 
    no-appendfsync-on-rewrite yes 
    auto-aof-rewrite-percentage 100 
    auto-aof-rewrite-min-size 64mb
    lua-time-limit 5000 
    slowlog-log-slower-than 10000 
    slowlog-max-len 128 
    hash-max-ziplist-entries 512 
    hash-max-ziplist-value 64 
    list-max-ziplist-entries 512 
    list-max-ziplist-value 64 
    set-max-intset-entries 512 
    zset-max-ziplist-entries 128 
    zset-max-ziplist-value 64 
    client-output-buffer-limit normal 0 0 0 
    client-output-buffer-limit slave 0 0 0 
    client-output-buffer-limit pubsub 0 0 0 
    hz 10 
    aof-rewrite-incremental-fsync yes 
    repl-backlog-size 33554432
    cat redis-6380.conf
    daemonize yes
    pidfile "/usr/loca/codis/proc/redis-6380.pid"
    port 6380
    timeout 86400
    tcp-keepalive 60
    loglevel notice
    logfile "/usr/local/codis/log/redis-6380.log"
    databases 16
    save 900 1
    save 300 10
    save 60 10000
    
    stop-writes-on-bgsave-error no
    rdbcompression yes
    dbfilename "dump-6380.rdb"
    dir "/usr/local/codis/data/redis_data_6380"
    masterauth "123456"
    slave-serve-stale-data yes
    repl-disable-tcp-nodelay no
    slave-priority 100
    requirepass "123456"
    maxmemory 10gb
    maxmemory-policy allkeys-lru
    appendonly no
    appendfsync everysec
    no-appendfsync-on-rewrite yes
    auto-aof-rewrite-percentage 100
    auto-aof-rewrite-min-size 64mb
    lua-time-limit 5000
    slowlog-log-slower-than 10000
    slowlog-max-len 128
    hash-max-ziplist-entries 512
    hash-max-ziplist-value 64
    list-max-ziplist-entries 512
    list-max-ziplist-value 64
    set-max-intset-entries 512
    zset-max-ziplist-entries 128
    zset-max-ziplist-value 64
    client-output-buffer-limit normal 0 0 0
    client-output-buffer-limit slave 0 0 0
    client-output-buffer-limit pubsub 0 0 0
    hz 10
    aof-rewrite-incremental-fsync yes
    repl-backlog-size 32mb

    创建目录

    mkdir -p /usr/local/codis/{data,log}
    mkdir -p /usr/local/codis/data/{redis_data_6379,redis_data_6380}

    启动redis 

    cd $GOPATH/src/github.com/CodisLabs/codis
    ./bin/codis-server ./config/redis-6379.conf
    ./bin/codis-server ./config/redis-6380.conf

    Redis-sentinel

    三台主机一样

    cd $GOPATH/src/github.com/CodisLabs/codis/config
    [root@jason config]# cat sentinel.conf
    bind 0.0.0.0
    protected-mode no
    port 26379
    dir "/usr/local/codis/data"

    启动 sentinel

    [root@test codis]# ./bin/redis-sentinel ./config/sentinel.conf

     

     

    用codis-proxy代理-压力测试

    上面我们已经配置好了2个codis-proxy,接下来使用它们其一对部署的集群进行压力测试
    
    在其中一台codis-server上使用redis-benchmark命令进行测试。命令如下:
    cd /usr/loca/codis
    ./bin/redis-benchmark -h 192.168.199.223 -p 19000 -q -n 1000000  -c 20  -d 100k
    
    命令行执行结果:
    [root@localhost codis]# ./bin/redis-benchmark -h 10.0.10.44 -p 19000 -q -n 1000000  -c 20  -d 100k
    PING_INLINE: 21769.42 requests per second
    PING_BULK: 18310.32 requests per second
    SET: 17011.14 requests per second
    GET: 18086.45 requests per second
    INCR: 17886.21 requests per second
    LPUSH: 17146.48 requests per second
    RPUSH: 17003.91 requests per second
    LPOP: 17160.31 requests per second
    RPOP: 17233.65 requests per second
    SADD: 19542.32 


     参考:

    https://www.cnblogs.com/xuanzhi201111/p/4425194.html
    https://www.jianshu.com/p/6994cef7c675
    https://blog.csdn.net/qifengzou/article/details/72902503
    http://blog.51cto.com/xiumin/1954795
    https://wuyanteng.github.io/2017/11/28/Codis3.2%E9%9B%86%E7%BE%A4%E9%83%A8%E7%BD%B2/

     
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  • 原文地址:https://www.cnblogs.com/xiaoyou2018/p/10207370.html
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