Starting httpd: (13)Permission denied: make_sock: could not bind to address [::]解决办法

如果修改过端口或添加过端口监听，重新Apache的时候可能会出现如下错误：
Starting httpd: (13)Permission denied: make_sock: could not bind to address [::]:9000

故事发生理由：
我在设置9000端口为testlink服务端口后重新apache时出错：
[root@LC-VM12 testlink]# service httpd  restart             
Stopping httpd:                                            [  OK  ]
Starting httpd: (13)Permission denied: make_sock: could not bind to address [::]:9000
(13)Permission denied: make_sock: could not bind to address 0.0.0.0:9000
no listening sockets available, shutting down
Unable to open logs
                                                           [FAILED]

解决办法：
semanage port -l|grep http
semanage port -a -t http_port_t -p tcp 81

参考信息：
semanage使用详解
NAME
semanage – SELinux Policy Management tool
SYNOPSIS
Output local customizations：导出selinux当前策略
semanage [ -S store ] -o [ output_file | – ]
Input local customizations：导入selinux策略
semanage [ -S store ] -i [ input_file | – ]
Manage booleans. Booleans allow the administrator to modify the confinement of processes based on his configuration.：管理一些进程、服务的开关、配置等等，全是开关两个状态
semanage boolean [-S store] -{d|m|l|n|D} -[-on|-off|1|0] -F boolean | boolean_file
Manage SELinux confined users (Roles and levels for an SELinux user)
semanage user [-S store] -{a|d|m|l|n|D} [-LrRP] selinux_name
Manage login mappings between linux users and SELinux confined users：将linux已存在的用户user映射到登陆保护
semanage login [-S store] -{a|d|m|l|n|D} [-sr] login_name | %groupname
-a：添加
-d：删除
-m：修改
-l：列举
-n：不打印说明头
-D：全部删除
例子：semanage login -a -s unconfined_u leowang
Manage network port type definitions：管理网络端口
semanage port [-S store] -{a|d|m|l|n|D} [-tr] [-p proto] port | port_range
-t：类型
-r：角色
例子：semanage port -a -t http_port_t -p tcp 81
Manage network interface type definitions
semanage interface [-S store] -{a|d|m|l|n|D} [-tr] interface_spec
Manage network node type definitions
semanage node [-S store] -{a|d|m|l|n|D} [-tr] [ -p protocol ] [-M netmask] address
Manage file context mapping definitions：管理文件安全上下文的映射
-f：文件
-s：用户
-t：类型
-r：角色
semanage fcontext [-S store] -{a|d|m|l|n|D} [-frst] file_spec
semanage fcontext [-S store] -{a|d|m|l|n|D} -e replacement target
例子：semanage fcontext -a -t httpd_sys_content_t "/web(/.*)?"    //新建一条规则，指定/web目录及其下的所有文件的扩展属性为httpd_sys_content_t
Manage processes type enforcement mode
semanage permissive [-S store] -{a|d|l|n|D} type
Disable/Enable dontaudit rules in policy
semanage dontaudit [-S store] [ on | off ]
Execute multiple commands within a single transaction.
semanage [-S store] -i command-file