Redhat5.8 64位LVS執行個體環境講解【一】

標籤：linux   lvs   伺服器   lvs執行個體   64位   

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一、伺服器環境

1、拓撲圖

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OS：Redhat 5.8  64位系統

LVS-Master : 192.168.19.60

LVS-Backup : 192.168.19.61

LVS-VIP : 192.168.19.65

Realserver-1 : 192.168.19.62   (Apache)

Realserver-2 : 192.168.19.63   (Nginx)

Realserver-2 : 192.168.19.64   (IIS)

2、安裝LVS依賴軟體

# yum install -y gcc gcc-c++ make openssl-devel kernel-devel

注:系統採用最少化方法安裝

所有伺服器關閉Selinux

[[email protected]_master ~]# vim /etc/sysconfig/selinux# This file controls the state of SELinux on the system.# SELINUX= can take one of these three values:#       enforcing - SELinux security policy is enforced.#       permissive - SELinux prints warnings instead of enforcing.#       disabled - SELinux is fully disabled.SELINUX=disabled# SELINUXTYPE= type of policy in use. Possible values are:#       targeted - Only targeted network daemons are protected.#       strict - Full SELinux protection.SELINUXTYPE=targeted

 

把SELINUX=disabled儲存，然後重啟伺服器即可。

二、安裝ipvsadm

1、建立編譯時間必須的一個軟連結

[[email protected]_master ~]# ln -s /usr/src/kernels/2.6.18-308.el5-x86_64/ /usr/src/linux

(這裡如果找不到以上核心目錄，是因為kernerl-devel沒有裝，先去安裝上就有了)

[[email protected]_master ~]# ll /usr/src/linux

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2、下載 ipvsadm

[[email protected]_master ~]# wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.24.tar.gz

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3、解壓縮

[[email protected]_master ~]# tar -zxvf ipvsadm-1.24.tar.gz[[email protected]_master ~]# cd ipvsadm-1.24

4、編譯安裝

[[email protected]_master ipvsadm-1.24]# make && make install

5、確認安裝成功

[[email protected]_master ipvsadm-1.24]# whereis ipvsadm

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[[email protected]_master ipvsadm-1.24]# ipvsadm --version

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三、安裝keepalived

1、下載keepalived

[[email protected]_master ~]# wget http://www.keepalived.org/software/keepalived-1.2.2.tar.gz

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2、解壓keepalived

[[email protected]_master ~]# tar -zxvf keepalived-1.2.2.tar.gz[[email protected]_master ~]# cd keepalived-1.2.2[[email protected]_master keepalived-1.2.2]# ./configure

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(注意這個步驟要看到以上字樣才是正常的)

 

3、安裝

[[email protected]_master keepalived-1.2.2]# make && make install

如果報錯，這樣

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注意：

把#include linux/types.h /* For __beXX types in userland */

移到#include sys/types.h 這行的下面

再編譯就可以通過了。(這個可能是keepalived版本問題)

[[email protected]_master keepalived-1.2.2]# vim keepalived/libipvs-2.6/ip_vs.h

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4. 配置

先看下有沒有檔案

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[[email protected]_master ~]# cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/[[email protected]_master ~]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/[[email protected]_master ~]# mkdir /etc/keepalived[[email protected]_master ~]# cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/[[email protected]_master ~]# cp /usr/local/sbin/keepalived /usr/sbin/[[email protected]_master ~]# chkconfig  keepalived on

[[email protected]_master ~]# service keepalived restart

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查看keepalived進程在不在

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5、從 keepalived跟主keepalived伺服器同樣的安裝方法，唯一不同的就是keepalived.conf設定檔不同。

四、keepalived.conf設定檔解釋

1、keepalived.conf主設定檔內容

! Configuration File for keepalivedglobal_defs {   notification_email {         [email protected] #表示發送通知訊息時郵件源地址是誰   }   notification_email_from [email protected]   smtp_server 127.0.0.1 #表示發送email時使用的smtp伺服器位址，這裡可以用本地的sendmail來實現  # smtp_connect_timeout 30 #串連smtp連線逾時時間   router_id LVS_DEVEL}vrrp_instance VI_1 {    state MASTER  # 備份LB將MASTER改為BACKUP    interface eth0 #執行個體綁定的網卡，因為在配置虛擬IP的時候必須是在已有的網卡上添加的    virtual_router_id 51  #這裡設定VRID，這裡非常重要，相同的VRID為一個組，他將決定多播的MAC地址    priority 100 # 優先順序,備份LB值改為比這個值小    advert_int 1 #檢查間隔，預設為1秒    authentication { #這裡設定認證        auth_type PASS #認證方式，可以是PASS或AH兩種認證方式        auth_pass 1111 #認證密碼    }    virtual_ipaddress {        192.168.19.65 # 多個VIP換行寫    }}    virtual_server 192.168.19.65 80 {    delay_loop 6  #每隔6秒查詢realserver狀態    lb_algo wlc # LVS 演算法    lb_kind DR  # LVS模式 DR是直接路由    persistence_timeout 60 #同一IP串連60秒內分配到同一台realserver    protocol TCP #TCP協議檢測realserver狀態    real_server 192.168.19.62 80 {        weight 3 #權重        TCP_CHECK {        connect_timeout 10 #10秒無響應逾時        nb_get_retry 3 #重連次數        delay_before_retry 3 #重連間隔        connect_port 80 #監控檢查的連接埠        }    }    real_server 192.168.19.63 80 {        weight 3        TCP_CHECK {        connect_timeout 10        nb_get_retry 3        delay_before_retry 3        connect_port 80        }     }    real_server 192.168.19.64 80 {        weight 3        TCP_CHECK {        connect_timeout 10        nb_get_retry 3        delay_before_retry 3        connect_port 80        }     }}

2、keepalived.conf從設定檔內容

! Configuration File for keepalivedglobal_defs {   notification_email {         [email protected]   }   notification_email_from [email protected]   smtp_server 127.0.0.1  # smtp_connect_timeout 30   router_id LVS_DEVEL}vrrp_instance VI_1 {    state BACKUP    interface eth0    virtual_router_id 51    priority 90    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.19.65     }}    virtual_server 192.168.19.65 80 {    delay_loop 6     lb_algo wlc     lb_kind DR     persistence_timeout 60    protocol TCP     real_server 192.168.19.62 80 {        weight 3        TCP_CHECK {        connect_timeout 10         nb_get_retry 3        delay_before_retry 3        connect_port 80        }    }    real_server 192.168.19.63 80 {        weight 3        TCP_CHECK {        connect_timeout 10        nb_get_retry 3        delay_before_retry 3        connect_port 80        }     }    real_server 192.168.19.64 80 {        weight 3        TCP_CHECK {        connect_timeout 10        nb_get_retry 3        delay_before_retry 3        connect_port 80        }     }}

到此主從LVS配置完成，下一篇講物理機的配置（也就是real_server）

 

本文出自 “首席技術官” 部落格，請務必保留此出處http://xunbang.blog.51cto.com/854050/1440899

Redhat5.8 64位LVS執行個體環境講解【一】