update PVE系统调整.md.

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秋刀狐狸
2022-07-20 09:50:10 +00:00
committed by Gitee
parent 56dae3cf45
commit 72f49b7a6b
+68
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@@ -17,3 +17,71 @@ apt install cpufrequtils
```
本篇教程后续命令,均在 SSH 终端下完成。
## 1.Fail2ban 配置
安装好 `fail2ban` 后,检查其服务状态:
```bash
## 检查 Fail2ban 系统服务状态
systemctl status fail2ban.service
```
`Loaded` 行,检查是否存在 `enable`
```bash
## 参考输出
● fail2ban.service - Fail2Ban Service
Loaded: loaded (/lib/systemd/system/fail2ban.service; enabled; vendor preset: enabled)
Active: active (running) since Sat 2022-07-16 05:03:53 CST; 4 days ago
Docs: man:fail2ban(1)
Process: 777 ExecStartPre=/bin/mkdir -p /run/fail2ban (code=exited, status=0/SUCCESS)
Main PID: 792 (fail2ban-server)
Tasks: 5 (limit: 18904)
Memory: 13.3M
CPU: 4min 53.764s
CGroup: /system.slice/fail2ban.service
└─792 /usr/bin/python3 /usr/bin/fail2ban-server -xf start
Jul 16 05:03:53 hyper systemd[1]: Starting Fail2Ban Service...
Jul 16 05:03:53 hyper systemd[1]: Started Fail2Ban Service.
Jul 16 05:03:53 hyper fail2ban-server[792]: Server ready
```
其中第1个 `enable` 表示当前服务开机自动启动,第2个 `enable` 表示该软件的默认启用状态。
如果并非为双 `enable` 状态,需要用一下命名进行调整:
```bash
## 开机自启 fail2ban 服务
systemctl enable fail2ban.service
## 参考输出
Synchronizing state of fail2ban.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable fail2ban
Created symlink /etc/systemd/system/multi-user.target.wants/fail2ban.service → /lib/systemd/system/fail2ban.service.
```
执行完成后,再次通过前面的命令检查服务自启状态。
后续如果想查看 Fail2ban 有关 sshd 的执行状态,可使用如下命令:
```bash
## 检查 sshd 的执行情况
fail2ban-client status sshd
## 参考输出
Status for the jail: sshd
|- Filter
| |- Currently failed: 0
| |- Total failed: 0
| `- File list: /var/log/auth.log
`- Actions
|- Currently banned: 0
|- Total banned: 0
`- Banned IP list:
```
如果均为0,表示 PVE 系统没有 SSH 错误密码的尝试记录。