centos7安装keepalived

在CentOS 7上安装Keepalived的过程如下：
1. 首先，下载Keepalived的压缩包，并将其解压到指定目录。可使用以下命令进行解压：
tar -zxf keepalived-2.0.20.tar.gz -C /app/

2. 进入解压后的Keepalived目录，并进行编译和安装。使用以下命令完成这一步骤：
cd keepalived-2.0.20/ && ./configure --prefix=/app/keepalived
make && make install

3. 安装完成后，需要将Keepalived安装为系统服务。这可以通过创建一个systemd服务单元来实现。可以按照以下步骤进行操作：
a. 创建一个名为keepalived.service的文件，将以下内容复制到该文件中：

      [Unit]
      Description=Keepalived
      After=syslog.target network.target

      [Service]
      Type=forking
      ExecStart=/app/keepalived/sbin/keepalived --dont-fork --log-console
      ExecReload=/bin/kill -HUP $MAINPID
      KillMode=process
      KillSignal=SIGTERM

      [Install]
      WantedBy=multi-user.target

b. 将该文件移动到系统服务目录中：
mv keepalived.service /etc/systemd/system/

4. 最后，启用并启动Keepalived服务。使用以下命令完成这一步骤：
systemctl enable keepalived
systemctl start keepalived

现在，Keepalived已经成功安装并以系统服务的形式运行在CentOS 7上了。请确保按照上述步骤进行操作，并替换相关路径和文件名为实际使用的路径和文件名。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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