|
|
systemctl
|
|
|
===
|
|
|
|
|
|
系统服务管理器指令
|
|
|
|
|
|
## 补充说明
|
|
|
|
|
|
**systemctl命令** 是系统服务管理器指令，它实际上将 service 和 chkconfig 这两个命令组合到一起。
|
|
|
|
|
|
<table>
|
|
|
|
|
|
<tbody>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>任务</td>
|
|
|
|
|
|
<td>旧指令</td>
|
|
|
|
|
|
<td>新指令</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>使某服务自动启动</td>
|
|
|
|
|
|
<td>chkconfig --level 3 httpd on</td>
|
|
|
|
|
|
<td>systemctl enable httpd.service</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>使某服务不自动启动</td>
|
|
|
|
|
|
<td>chkconfig --level 3 httpd off</td>
|
|
|
|
|
|
<td>systemctl disable httpd.service</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>检查服务状态</td>
|
|
|
|
|
|
<td>service httpd status</td>
|
|
|
|
|
|
<td>systemctl status httpd.service （服务详细信息） systemctl is-active httpd.service （仅显示是否 Active)</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>显示所有已启动的服务</td>
|
|
|
|
|
|
<td>chkconfig --list</td>
|
|
|
|
|
|
<td>systemctl list-units --type=service</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>启动某服务</td>
|
|
|
|
|
|
<td>service httpd start</td>
|
|
|
|
|
|
<td>systemctl start httpd.service</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>停止某服务</td>
|
|
|
|
|
|
<td>service httpd stop</td>
|
|
|
|
|
|
<td>systemctl stop httpd.service</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td>重启某服务</td>
|
|
|
|
|
|
<td>service httpd restart</td>
|
|
|
|
|
|
<td>systemctl restart httpd.service</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
</tbody>
|
|
|
|
|
|
</table>
|
|
|
|
|
|
### 实例
|
|
|
|
|
|
1.启动nfs服务
|
|
|
|
|
|
```
|
|
|
systemctl start nfs-server.service
|
|
|
```
|
|
|
|
|
|
2.设置开机自启动
|
|
|
|
|
|
```
|
|
|
systemctl enable nfs-server.service
|
|
|
```
|
|
|
|
|
|
3.停止开机自启动
|
|
|
|
|
|
```
|
|
|
systemctl disable nfs-server.service
|
|
|
```
|
|
|
|
|
|
4.查看服务当前状态
|
|
|
|
|
|
```
|
|
|
systemctl status nfs-server.service
|
|
|
```
|
|
|
|
|
|
5.重新启动某服务
|
|
|
|
|
|
```
|
|
|
systemctl restart nfs-server.service
|
|
|
```
|
|
|
|
|
|
6.查看所有已启动的服务
|
|
|
|
|
|
```
|
|
|
systemctl list -units --type=service
|
|
|
```
|
|
|
|
|
|
开启防火墙22端口
|
|
|
|
|
|
```
|
|
|
iptables -I INPUT -p tcp --dport 22 -j accept
|
|
|
```
|
|
|
|
|
|
如果仍然有问题，就可能是SELinux导致的
|
|
|
|
|
|
关闭SElinux：
|
|
|
|
|
|
修改`/etc/selinux/config`文件中的`SELINUX=””`为disabled，然后重启。
|
|
|
|
|
|
彻底关闭防火墙：
|
|
|
|
|
|
```
|
|
|
sudo systemctl status firewalld.service
|
|
|
sudo systemctl stop firewalld.service
|
|
|
sudo systemctl disable firewalld.service
|
|
|
```
|
|
|
|
|
|
|
|
|
<!-- Linux命令行搜索引擎：https://jaywcjlove.github.io/linux-command/ --> |
