分类: LINUX
2015-10-29 17:10:16
CentOS 7 (RHEL 7)带来了新的服务管理命令,为了保持兼容原有的命令仍可以使用,以下是新旧命令的对照。
启动、停止、重启、重载、检查服务:
6: service httpd start|stop|restart|reload|status
7: systemctl start|stop|restart|reload|status httpd.service
允许、禁止服务自启动:
6: chkconfig httpd on|off
7: systemctl enable|disable httpd.service
列出服务:
6: chkconfig –list
7: systemctl list-unit-files –type=service 或 ls /etc/systemd/system/*.wants/
添加服务:
6: chkconfig httpd –add
7: systemctl daemon-reload
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操作系统环境: Linux release 7.0.1406(Core) 64位
CentOS 7.0默认使用的是firewall作为防火墙,这里改为iptables防火墙步骤。
1、关闭firewall:
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd --state #查看默认防火墙状态(关闭后显示notrunning,开启后显示running)
2、iptables防火墙(这里iptables已经安装,下面进行配置)
vi/etc/sysconfig/iptables #编辑防火墙配置文件
# sampleconfiguration for iptables service
# you can edit thismanually or use system-config-firewall
# please do not askus to add additional ports/services to this default configuration
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT[0:0]
:OUTPUT ACCEPT[0:0]
-A INPUT -m state--state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -jACCEPT
-A INPUT -i lo -jACCEPT
-A INPUT -p tcp -mstate --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -jACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 8080-j ACCEPT
-A INPUT -j REJECT--reject-with icmp-host-prohibited
-A FORWARD -jREJECT --reject-with icmp-host-prohibited
COMMIT
:wq! #保存退出
备注:这里使用80和8080端口为例。***部分一般添加到“-A INPUT -p tcp -m state --state NEW -m tcp--dport 22 -j ACCEPT”行的上面或者下面,切记不要添加到最后一行,否则防火墙重启后不生效。
systemctlrestart iptables.service #最后重启防火墙使配置生效
systemctlenable iptables.service #设置防火墙开机启动
全文完..........