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LVS理論基礎請點擊下面的網址：

http://my.oschina.net/u/1454868/blog/208269

網絡結構：

direct?server:10.10.54.85(3306-master) 10.10.54.85(eth0) 192.168.1.83(eth1)vip1:10.10.54.89(eth0) vip2:192.168.1.84(eth1)real?server:192.168.1.86(80,3306-slave) geteway:192.168.1.84real?server:192.168.1.88(80,3306-slave) gateway:192.168.1.84

需要搭建mysql主從，根據上面的網絡結構搭建：

搭建主從mysql (1)規劃主從主機 主機：10.10.54.85 從機1：10.10.54.86 從機2：10.10.54.88 (2)更改主機配置文件 [root@nan85?etc]#?vim?/etc/my.cnf? log-bin=master-bin binlog_format=mixed server-id=1 (3)更改從機配置文件 從1 [root@nan86?~]#?vim?/etc/my.cnf? log-bin=slave-bin binlog_format=mixed server-id=10 從2 [root@nan88?~]#?vim?/etc/my.cnf? log-bin=slave-bin binlog_format=mixed server-id=11 (4)在master上創建復制用戶，并授予權限 mysql>?grant?replication?slave?on?*.*?to?'emp1'@'10.10.54.86'?identified?by?'emp1'; mysql>?flush?privileges; mysql>?grant?replication?slave?on?*.*?to?'emp2'@'10.10.54.88'?identified?by?'emp2'; mysql>?flush?privileges; (5)查看master上二進制日志和position位置 mysql>?show?master?status; +-------------------+----------+--------------+------------------+ |?File??????????????|?Position?|?Binlog_Do_DB?|?Binlog_Ignore_DB?| +-------------------+----------+--------------+------------------+ |?master-bin.000006?|??????990?|??????????????|??????????????????| +-------------------+----------+--------------+------------------+ (6)備份master上的數據，把備份master數據庫還原到從庫上 (7)在slave上面change?master操作 從1： mysql>?change?master?to?master_host='10.10.54.85',master_user='emp1',?master_password='emp1',?master_log_file='master-bin.000006',master_log_pos=990; 從2： mysql>?change?master?to?master_host='10.10.54.85',master_user='emp2',master_password='emp2',master_log_file='master-bin.000006',master_log_pos=990;(8)在slave上啟動slave 從1： mysql>?slave?start; 從2： mysql>?slave?start;(9)查看slave狀態確定slave上的I/O線程和SQL線程狀態為YES 從1： mysql>?show?slave?status\G;Slave_IO_Running:?YesSlave_SQL_Running:?Yes從2： mysql>?show?slave?status\G;Slave_IO_Running:?YesSlave_SQL_Running:?Yes

LVS(MASTER---NAT)：

1.網絡架構 direct?server:10.10.54.85(3306-master) 10.10.54.85(eth0) 192.168.1.83(eth1)vip1:10.10.54.89(eth0) vip2:192.168.1.84(eth1)real?server:192.168.1.86(80,3306-slave) geteway:192.168.1.84real?server:192.168.1.88(80,3306-slave) gateway:192.168.1.842.開啟內核轉發 [root@nan85?~]#?vim?/etc/sysctl.conf? net.ipv4.ip_forward?=?13.先在master(10.10.54.85)上安裝ipvsadm,keepalived (1)下載軟件 //本機內核版本： #?uname?-r 2.6.32-358.el6.x86_64 下載地址：?--相應版本 http://www.linuxvirtualserver.org/software/ipvs.html#kernel-2.6 ipvsadm-1.26.tar.gz keepalived http://www.keepalived.org/download.html keepalived-1.2.9.tar.gz(2)編譯安裝ipvsadm //配置yum源 根據自己的ftp?yum源做 [root@nan85?lvs]#?vim?/etc/yum.repos.d/CentOS-ftp.repo? [Packages] name=Packages baseurl=ftp://10.201.1.221/Packages gpgcheck=0 enable=1 [Packages2] name=Packages2 baseurl=ftp://10.201.1.221/Packages2 gpgcheck=0 enable=1 #yum?clean?all //安裝依賴包 [root@nan85?ipvsadm-1.26]#?yum?list|grep?kernel-dev [root@nan85?ipvsadm-1.26]#?yum?list|grep?popt [root@nan85?lvs]#?yum?install?popt-static.x86_64?popt-devel.x86_64?popt.x86_64 [root@nan85?lvs]#?yum?-y?install?wget?libnl*?popt*?gcc.x86_64?gcc-c++.x86_64?gcc-objc++.x86_64?kernel-devel.x86_64?make?popt-static.x86_64 //確認模塊 [root@nan85?lvs]#?modprobe?-l|grep?ipvs kernel/net/netfilter/ipvs/ip_vs.ko kernel/net/netfilter/ipvs/ip_vs_rr.ko kernel/net/netfilter/ipvs/ip_vs_wrr.ko kernel/net/netfilter/ipvs/ip_vs_lc.ko kernel/net/netfilter/ipvs/ip_vs_wlc.ko kernel/net/netfilter/ipvs/ip_vs_lblc.ko kernel/net/netfilter/ipvs/ip_vs_lblcr.ko kernel/net/netfilter/ipvs/ip_vs_dh.ko kernel/net/netfilter/ipvs/ip_vs_sh.ko kernel/net/netfilter/ipvs/ip_vs_sed.ko kernel/net/netfilter/ipvs/ip_vs_nq.ko kernel/net/netfilter/ipvs/ip_vs_ftp.ko //編譯keepalived-1.2.9 [root@nan85?lvs]#?tar?xvf?keepalived-1.2.9.tar.gz? 需要安裝基礎軟件包openssl和popt yum?install?net-snmp.x86_64?net-snmp-devel.x86_64 ./configure?--prefix=/usr/local/keepalived?--enable-snmp?--sysconfdir=/etc/ 出現錯誤： configure:?error:?unable?to?find?net-snmp-config 解決方法： [root@nan85?keepalived-1.2.9]#?yum?install?net-snmp.x86_64?net-snmp-devel.x86_64 Keepalived?version???????:?1.2.9 Compiler?????????????????:?gcc Compiler?flags???????????:?-g?-O2 Extra?Lib????????????????:?-Wl,-z,relro?-Wl,-z,now?-L/usr/lib64?-lnetsnmpagent?-lnetsnmphelpers?-lnetsnmpmibs?-lnetsnmp?-Wl,-E?-Wl,-rpath,/usr/lib64/perl5/CORE?-lssl?-lcrypto?-lcrypt??-lnl Use?IPVS?Framework???????:?Yes IPVS?sync?daemon?support?:?Yes IPVS?use?libnl???????????:?Yes Use?VRRP?Framework???????:?Yes Use?VRRP?VMAC????????????:?Yes SNMP?support?????????????:?Yes SHA1?support?????????????:?No Use?Debug?flags??????????:?No [root@nan85?keepalived-1.2.9]#?make?&&?make?install [root@nan85?~]#?cp?/usr/local/keepalived/sbin/keepalived?/sbin/ [root@nan85?~]#?cp?/usr/local/keepalived/bin/genhash?/bin/ [root@nan85?~]#?cd?/etc/keepalived/ [root@nan85?keepalived]#?ls keepalived.conf??samples --keepalived軟件不對keepalived語法進行檢查，在編輯前需要備份4.在MASTER上修改keepalived [root@nan85?~]#?vim?/etc/keepalived/keepalived.conf !?Configuration?File?for?keepalived global_defs?{notification_email?{lisn@shiwei.com}notification_email_from?lisn@shiwei.comsmtp_server?mail.shiwei.comsmtp_connect_timeout?30router_id?LVS_DEVEL }vrrp_instance?VI_1?{state?MASTERinterface?eth0virtual_router_id?51priority?100advert_int?1authentication?{auth_type?PASSauth_pass?1111}virtual_ipaddress?{10.10.54.89/24?dev?eth0?label?eth0:1}virtual_ipaddress?{192.168.1.84/24?dev?eth1?label?eth1:1} }virtual_server?10.10.54.89?80?{delay_loop?6lb_algo?rrlb_kind?NATnat_mask?255.255.255.0#persistence_timeout?50protocol?TCPreal_server?192.168.1.86?80?{weight?1TCP_CHECK?{connect_timeout?3nb_get_retry?3delay_before_retry?3connect_port?80}}real_server?192.168.1.88?80?{weight?1TCP_CHECK?{connect_timeout?3nb_get_retry?3delay_before_retry?3connect_port?80}} }virtual_server?10.10.54.89?3306?{delay_loop?6lb_algo?rrlb_kind?NATnat_mask?255.255.255.0#persistence_timeout?50protocol?TCPreal_server?192.168.1.86?3306?{weight?1TCP_CHECK?{connect_timeout?3nb_get_retry?3delay_before_retry?3connect_port?3306}}real_server?192.168.1.88?3306?{weight?1TCP_CHECK?{connect_timeout?3nb_get_retry?3delay_before_retry?3connect_port?3306}} } [root@nan85?keepalived]#?/etc/init.d/keepalived?restart #ifconfig 查看出現 eth0:1 eth1:1 則成功 也可用下面的命令查看： #ip?addr 5.測試 //非direct?server上 telnet?10.10.54.89?3306 telnet?10.10.54.89?80master?節點上： #ipvsadm?-ln IP?Virtual?Server?version?1.2.1?(size=4096) Prot?LocalAddress:Port?Scheduler?Flags->?RemoteAddress:Port???????????Forward?Weight?ActiveConn?InActConn TCP??10.10.54.89:3306?rr->?192.168.1.86:3306????????????Masq????1??????1??????????0?????????->?192.168.1.87:3306????????????Masq????1??????0??????????1

轉載于:https://my.oschina.net/u/1454868/blog/208283

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