Added eventline installation doc

content/docs/adyxax.org/eventline/install.md

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+---
+title: "Installation"
+description: Installation notes of eventline.adyxax.org on FreeBSD
+tags:
+- Eventline
+- FreeBSD
+- PostgreSQL
+---
+
+## Introduction
+
+Please refer to [the official website](https://www.exograd.com/doc/eventline/handbook.html#_deployment_and_configuration) documentation for an up to date installation guide. This page only lists what I had to do at the time to setup eventline and adapt it to my particular setup.
+
+## Preparing the postgresql database
+
+A Postgresql database version 14 or above is the only dependency, let's install it:
+```sh
+pkg install postgresql14-server postgresql14-contrib
+/usr/local/etc/rc.d/postgresql enable
+/usr/local/etc/rc.d/postgresql initdb
+/usr/local/etc/rc.d/postgresql start
+```
+
+Now let's provision a database:
+```sh
+su - postgres
+createuser -W eventline
+createdb -O eventline eventline
+```
+
+Connect to the database and activate the pgcryto extension:
+```sql
+psql -U eventline -W eventline
+CREATE EXTENSION pgcrypto;
+```
+
+## Eventline
+
+Exograd (the company behind eventline) maintains a FreeBSD repository, let's use it:
+```sh
+curl -sSfL -o /usr/local/etc/pkg/repos/exograd-public.conf \
+     https://pkg.exograd.com/public/freebsd/exograd.conf
+pkg update
+pkg install eventline
+```
+
+Edit the `/usr/local/etc/eventline/eventline.yaml` configuration file:
+```yaml
+data_directory: "/usr/local/share/eventline"
+
+api_http_server:
+  address: "localhost:8085"
+
+web_http_server:
+  address: "localhost:8087"
+
+web_http_server_uri: "http://localhost:8087"
+
+pg:
+  uri:
+    "postgres://eventline:XXXXXXXX@localhost:5432/eventline"
+
+# You need to generate a random encryption, for example using OpenSSL:
+# openssl rand -base64 32
+encryption_key: "YYYYYYYY"
+```
+
+Now start eventline with:
+```sh
+service eventline enable
+service eventline start
+```
+
+## DNS record
+
+Since all configuration regarding this application is in terraform, so is the dns:
+```hcl
+resource "cloudflare_record" "eventline-cname" {
+  zone_id = lookup(data.cloudflare_zones.adyxax-org.zones[0], "id")
+  name    = "eventline"
+  value   = "10.1.2.5"
+  type    = "A"
+  proxied = false
+}
+```
+
+This IP is the wireguard endpoint on the server hosting eventline. Having this hostname is important for the ssl certificate validation, otherwise firefox will complain!
+
+## Nginx configuration for the webui
+
+This nginx configuration listens on a wireguard interface:
+```cfg
+server {
+        listen  10.1.2.5:80;
+        server_name  eventline.adyxax.org;
+        location / {
+                return 308 https://$server_name$request_uri;
+        }
+}
+# webui
+server {
+        listen  10.1.2.5:443 ssl;
+        server_name  eventline.adyxax.org;
+
+        location / {
+                proxy_pass  http://127.0.0.1:8087;
+                include headers_secure.conf;
+        }
+        ssl_certificate      adyxax.org.fullchain;
+        ssl_certificate_key  adyxax.org.key;
+}
+# api-server
+server {
+        listen  10.1.2.5:8085 ssl;
+        server_name  eventline.adyxax.org;
+
+        location / {
+                proxy_pass  http://127.0.0.1:8085;
+                include headers_secure.conf;
+        }
+        ssl_certificate      adyxax.org.fullchain;
+        ssl_certificate_key  adyxax.org.key;
+}
+```
+
+## Admin account's password
+
+Go to the domain you configured (https://eventline.adyxax.org/ for me) and login to your new eventline with username `admin` and password `admin`. Then go to `Account` and click `Change password`.