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29c2be Ralph Thesen 2024-10-19 11:28:18 1 
# FAQ
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We cover both frequently asked questions and special cases that would polute the documentation here.
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## Installation
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### Environments with SELinux
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To make An Otter Wiki run in an environment with `SELINUX=enforcing` with the methods propose in the [[Installation]] document the bind mounts have to be adjusted.
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When podman gives you the error message
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```
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mkdir: cannot create directory '/app-data': Permission denied
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```
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please update your `compose.yaml` to
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```yaml
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services:
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otterwiki:
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image: redimp/otterwiki:2
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restart: unless-stopped
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ports:
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- 8080:80
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volumes:
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- ./app-data:/app-data:Z
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```
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For podman please see the [podman troubleshooting guide](https://github.com/containers/podman/blob/main/troubleshooting.md#2-cant-use-volume-mount-get-permission-denied) for more details and instructions.
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7d6142 Ralph Thesen 2025-07-13 20:01:28 29
In our tests in `rocky:9 docker` configured the permissions even with setting the `:z` flag, please see the [docker documentation about bind mounts](https://docs.docker.com/engine/storage/bind-mounts/#configure-the-selinux-label) for more details.
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#### Caddy as reverse proxy provisioning TLS certificates
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In an environment with `SELINUX=enforcing` where Caddy is used as reverse proxy, it was observed that it is necessary to run
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```bash
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setsebool -P httpd_can_network_connect on
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```
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to enable Caddy to connect to the internet in order to provision proper TLS certificates.
00f9ff Ralph Thesen 2025-03-07 22:38:39 38
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## Errors
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### 413 RequestEntityTooLarge
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When An Otter Wiki raises the error 413 RequestEntityTooLarge please configure the variable `MAX_FORM_MEMORY_SIZE` which is in bytes and by default `500000`, see [Configuration](/Configuration#content-and-editing-preferences).