# fail2ban nextcloud won't start
**URL:** https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593
**Category:** Troubleshooting
**Created:** [4 November 2020 12:25 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593 "2020-11-04T12:25:52Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@DietRK](https://dietpi.com/forum/u/DietRK)
#### Post date: [4 November 2020 12:25 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593/1 "2020-11-04T12:25:52Z")
After configured fail2ban for nextcloud i’m getting this errors
systemctl status fail2ban.service
```nohighlight
root@DietPi:~# systemctl status fail2ban.service
● fail2ban.service - Fail2Ban Service
Loaded: loaded (/lib/systemd/system/fail2ban.service; enabled; vendor preset:
enabled)
Active: failed (Result: exit-code) since Wed 2020-11-04 13:19:46 C
ET; 22s ago
Docs: man:fail2ban(1)
Process: 4587 ExecStartPre=/bin/mkdir -p /var/run/fail2ban (code=exited, statu
s=0/SUCCESS)
Process: 4588 ExecStart=/usr/bin/fail2ban-server -xf start (code=exite
d, status=255/EXCEPTION)
Main PID: 4588 (code=exited, status=255/EXCEPTION)
Nov 04 13:19:46 DietPi systemd[1]: Starting Fail2Ban Service...
Nov 04 13:19:46 DietPi systemd[1]: Started Fail2Ban Service.
Nov 04 13:19:46 DietPi fail2ban-server[4588]: Failed during configuration: Bad
value substitution: option 'action' in section 'nextcloud' contains an interpola
tion key 'action_mw1' which is not a valid option name. Raw value: '%(action_mw1
)s'
Nov 04 13:19:46 DietPi fail2ban-server[4588]: Async configuration of server fai
led
Nov 04 13:19:46 DietPi systemd[1]: fail2ban.service: Mai
n process exited, code=exited, status=255/EXCEPTION
Nov 04 13:19:46 DietPi systemd[1]: fail2ban.service: Fai
led with result 'exit-code'.
```
nano /etc/fail2ban/jail.conf
```nohighlight
[nextcloud]
enabled = true
port = 80,443
protocol = tcp
filter = nextcloud
maxretry = 3
logpath = /var/log/nextcloud.log
action = %(action_mwl)s
```
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [4 November 2020 13:09 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593/2 "2020-11-04T13:09:39Z")
Hi,
looks like the action you have set is not accepted. Where did you get the config from?
```nohighlight
value substitution: option 'action' in section 'nextcloud' contains an interpola
tion key 'action_mw1' which is not a valid option name. Raw value: '%(action_mw1
)s'
```
---
### Author:  [@DietRK](https://dietpi.com/forum/u/DietRK)
#### Post date: [4 November 2020 13:32 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593/3 "2020-11-04T13:32:21Z")
copied it from here
[https://www.ksite.de/nextcloud-mit-fail2ban-absichern/](https://www.ksite.de/nextcloud-mit-fail2ban-absichern/)
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [4 November 2020 13:41 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593/4 "2020-11-04T13:41:04Z")
probably a typo. It should be
> action = %(action\_mwl)s
With L like Lima.
On you error message it looks like a 1 (one)
---
### Author:  [@DietRK](https://dietpi.com/forum/u/DietRK)
#### Post date: [5 November 2020 10:56 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593/5 "2020-11-05T10:56:32Z")
i tried it several times,
only if comment out action , failban runs
```nohighlight
[nextcloud]
enabled = true
port = 80,443
protocol = tcp
filter = nextcloud
maxretry = 3
logpath = /var/log/nextcloud.log
#action = %(action_mwl)s
```
fail2ban-client status
```nohighlight
Status
|- Number of jail: 3
`- Jail list: dropbear, nextcloud, sshd
```
Maybe a problem of Nextcloud \> 16 ?
---
### Author:  [@Joulinar](https://dietpi.com/forum/u/Joulinar)
#### Post date: [5 November 2020 14:03 UTC](https://dietpi.com/forum/t/fail2ban-nextcloud-wont-start/4593/6 "2020-11-05T14:03:54Z")
well your problem is the line action = %(action\_mwl)s within your jail.conf file. Best to my knowledge, this is to send email notification. [https://wiki.archlinux.org/index.php/fail2ban#Receive\_an\_alert\_e-mail](https://wiki.archlinux.org/index.php/fail2ban#Receive_an_alert_e-mail)
But I guess this is not configured on your F2B installation. Found another guide how to setup F2B and Nextcloud [https://www.allerstorfer.at/fail2ban-fuer-nextcloud/](https://www.allerstorfer.at/fail2ban-fuer-nextcloud/)
Btw: nextcloud.log is located at /mnt/dietpi\_userdata/nextcloud\_data/nextcloud.log by default.