在Linux中安装keepalived实现Nginx的高可用_linux安装keepalived访问nginx-优快云博客

本文链接：https://blog.youkuaiyun.com/yihuaiyan/article/details/88942964

本文介绍了如何在Linux环境中通过安装keepalived实现Nginx的高可用性。详细步骤包括环境准备、keepalived的安装与配置，以及防火墙规则的设置。在配置完成后，通过主从机和备份机的设置，确保了在主节点故障时，流量能够无缝切换到备份节点。

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1. 安装环境 (准备阶段)
进入root目录:

su - root

安装kernel-deve:

yum -y install kernel-devel*

安装openssl:

yum -y install openssl-*

安装popt-devel:

yum -y install popt-devel

安装lrzsz:

yum -y install lrzsz

安装openssh-clients:

yum -y install openssh-clients

安装libnl libnl-devel popt:

yum -y install libnl libnl-devel popt

2. 安装keepalived

将keepalived-1.2.15.tar.gz上传到服务器

tar -zxvf keepalived-1.2.15.tar.gz -C /usr/local/
cd  /usr/local/keepalived-1.2.15/

执行配置命令:

./configure --prefix=/usr/local/keepalived

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3、编译

make

4、安装

make install

或者把3和4这个步骤合成一步

make && make install

至此安装成功!
5、拷贝执行文件:

cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

6、将init.d文件拷贝到etc下,加入开机启动项.

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/keepalived

7、将keepalived文件拷贝到etc下，加入网卡配置.

cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/

8、创建keepalived文件夹.

mkdir -p /etc/keepalived

9、将keepalived配置文件拷贝到etc下.

cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf

10、添加可执行权限.

chmod +x /etc/init.d/keepalived

2.2. 加入开机启动(添加时必须保证/etc/init.d/keepalived存在)：

可以自行去检查是否存在.

ll /etc/init.d/

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chkconfig --add keepalived	
chkconfig keepalived on

添加完可查询系统服务是否存在：

chkconfig --list

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2.3. 启动keepalived

启动：service keepalived start
停止：service keepalived stop
重启：service keepalived restart

vim /etc/sysconfig/keepalived
KEEPALIVED_OP