keepalived安裝使用

2. keepalived雙機主備配置

3. keepalived雙機熱備

4. 將keepalived 註冊為系統服務

5. 配置nginx自動重啟

6. 整合fdfs

yum -y install libnl libnl-devel

tar -zxvf keepalived-2.0.18.tar.gz cd keepalived-2.0.18 ./configure --prefix=/usr/local/keepalived --sysconf=/etc make &&make install

vi /etc/keepalived/keepalived.conf

! configuration file for keepalived global_defs # 計算機節點 vrrp_instance vi_1 #虛擬ip virtual_ipaddress

}

啟動主節點keepalived

/usr/local/keepalived/sbin/keepalived

看下程序是否啟動成功

ps -ef |
grep keepalived

vi /etc/keepalived/keepalived.conf

! configuration file for keepalived global_defs # 計算機節點 vrrp_instance vi_1 #虛擬ip virtual_ipaddress

}

啟動主節點keepalived

/usr/local/keepalived/sbin/keepalived

看下程序是否啟動成功

ps -ef |
grep keepalived

ip addr

將主節點的keepalived的程序殺死，再檢視ip位址情況

虛擬ip已經切換到備節點機器，再將主節點機器keepalived程式啟動，則虛擬ip會回到主節點機器

主節點配置： global_defs vrrp_instance vi_1 virtual_ipaddress }vrrp_instance vi_2 virtual_ipaddress

}

備用節點配置 global_defs vrrp_instance vi_1 virtual_ipaddress }vrrp_instance vi_2 virtual_ipaddress

}

cd /opt/soft/keepalived/keepalived-2.0.18/keepalived/etc cp init.d/keepalived /etc/init.d/ cp sysconfig/keepalived /etc/sysconfig/ systemctl daemon-reload systemctl enable keepalived

vi /etc/keepalived/check_nginx_alive_or_not.sh

#!/bin/bash a=`
ps -c nginx --no-header |
wc -l`
# 判斷nginx是否宕機，如果宕機了，嘗試重啟 if[
$a -eq 0 ]
;then 
/usr/local/nginx/sbin/nginx 
# 等待一小會再次檢查nginx，如果沒有啟動成功，則停止keepalived，使其啟動備用機 
sleep 3 
if[`ps -c nginx --no-header |
wc -l`
-eq 0 ]
;then
killall keepalived 
fifi

chmod +x /etc/keepalived/check_nginx_alive_or_not.sh

! configuration file for keepalived global_defs # 執行的指令碼 vrrp_script check_nginx_alive # 計算機節點 vrrp_instance vi_1 # 追蹤 nginx 指令碼 track_script #虛擬ip virtual_ipaddress

}

鏈結

#!/bin/bash #查詢ngxin程序的數量 ngc= `ps -c nginx --no-header | wc -l` #nginx的pid所在目錄 ngd= "/var/run/nginx" #nginx的pid檔案路徑 ngp= "/var/run/nginx/nginx.pid" #查詢 fdfs_trackerd 程序的數量 fdfsc= `ps -c fdfs_trackerd --no-header | wc -l` #虛擬機器重啟會刪除/var/run/nginx 這個目錄，導致nginx.pid丟失，需要重新建立 #判斷nginx的pid所在目錄是否存在，不存在則建立if[ [! -d "$ngd"]] ;then echo "nginx的pid目錄不存在" mkdir /var/run/nginx fi#判斷nginx的pid是否存在，不存在則建立if[ [! -f "$ngp"]] ;then echo "nginx的pid檔案不存在" touch /var/run/nginx/nginx.pid fi#nginx整合fdfs後，需要依賴fdfs服務，否則啟動nginx會只有master沒有worker，無法正常使用 #判斷fdfs是否存在，不存在則不執行if[ $fdfsc -gt 0 ] ;then # 判斷nginx是否宕機，如果宕機了，嘗試重啟if[ $ngc -eq 0 ] ;then /usr/local/nginx/sbin/nginx # 等待一小會再次檢查nginx，如果沒有啟動成功，則停止keepalived，使其啟動備用機 sleep 3 if[` ps -c nginx --no-header | wc -l` -eq 0 ] ;then killall keepalived fifielse echo "fdfs_trackerd 服務不存在"

fi

keepalived安裝使用

keepalived安裝部署

Keepalived配置安裝

keepalived編譯安裝

keepalived安裝使用

keepalived安裝部署

Keepalived配置安裝

keepalived編譯安裝

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