在 Fail2Ban 配置中使用 bash 脚本答案

【问题标题】：Use bash script in Fail2Ban Configuration在 Fail2Ban 配置中使用 bash 脚本
【发布时间】：2018-03-14 13:36:48
【问题描述】：

我想在Fail2Ban 的邮件中调用一个bash 脚本。 bash脚本调用rest api获取fail2ban被屏蔽ip地址的用户名。

# Fail2Ban configuration file
#
# Author: *
#
#

[INCLUDES]

before = sendmail-common.conf

[Definition]

# Option:  actionban
# Notes.:  command executed when banning an IP. Take care that the
#          command is executed with Fail2Ban user rights.
# Tags:    See jail.conf(5) man page
# Values:  CMD
#
actionban = printf %%b "Subject: [Fail2Ban] <name>: banned <ip> from `uname -n`
            Date: `LC_ALL=C date +"%%a, %%d %%h %%Y %%T %%z"`
            From: <sendername> <<sender>>
            To: <dest>\n
            The following IP <ip> has just been banned by Fail2Ban after <failures> attempts against the acceptance environment of <name> on server.\n
            One or the following users could be the victim: \n 
            `/etc/fail2ban/restapi/getHttpSessions.sh | grep <ip>` \n | /usr/sbin/sendmail -f <sender> <dest>

[Init]

但是我在 fail2ban 日志中发现没有发送电子邮件的错误

`/bin/sh /etc/fail2ban/scripts/getHttpSessions.sh | grep` 10.100.00.00 \n |/usr/sbin/sendmail -f fail2ban test@test.com -- returned 1

有没有办法在 fail2ban 配置文件中使用 bash 脚本来查找 bash 创建的概述中的 IP 地址？

谢谢！

【问题讨论】：

标签： bash sendmail fail2ban

【解决方案1】：

我让它工作了。可能是语法中的一些问题。工作代码：

# Fail2Ban configuration file
#
# Author: Danny van den Berg
#
#

[INCLUDES]

before = sendmail-common.conf

[Definition]

# Option:  actionban
# Notes.:  command executed when banning an IP. Take care that the
#          command is executed with Fail2Ban user rights.
# Tags:    See jail.conf(5) man page
# Values:  CMD
#
actionban = printf %%b "Subject: [Fail2Ban] <name>: banned <ip> from `uname -n`
            Date: `LC_ALL=C date +"%%a, %%d %%h %%Y %%T %%z"`
            From: <sendername> <<sender>>
            To: <dest>\n
            The following IP <ip> has just been banned by Fail2Ban after <failures> attempts against the production environment of <name> on server.\n
            More information about the user:\n 
            [IP            | KEY] \n
            `/usr/bin/gethttpsessions | grep <ip> `\n\n" | /usr/sbin/sendmail -f <sender> <dest>

[Init]

# Default name of the chain
#
name = default

【讨论】：