确保开启syslog-ng服务

说明：系统整改时发现没有syslog-ng服务，需要整改

1、下载yum源

yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

2、安装服务

[root@localhost ~]# yum -y install syslog-ng
[root@localhost ~]# systemctl status syslog-ng
[root@localhost ~]# systemctl restart syslog-ng
[root@localhost ~]# systemctl enable  syslog-ng