Added instructions to upgrade from YAMS v1 to YAMS v2HEADmaster

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+---
+title: "Upgrading YAMS from version 1 to version 2 (Advanced)"
+date: 2023-10-25T19:19:19-03:00
+draft: false
+weight: 4
+summary: Are you running YAMS v1? Here's the guide to upgrade YAMS to v2!
+---
+
+# First, a brief disclaimer
+
+I want to make this very clear: **This is entirely optional!** I will continue to support YAMS v1 as well as YAMS v2.
+
+If you are completely happy with YAMS v1, or have a heavily modified setup, you can skip this tutorial!
+
+## What are the advantages?
+
+- YAMS v2 introduces a new command: `yams upgrade`. It allows YAMS to upgrade itself.
+- Adding custom containers is now easier. You can find the tutorial here: [Add your own containers](/advanced/add-your-own-containers/).
+
+# Before starting
+# ⚠ BACKUP YOUR CONFIGURATION! ⚠
+
+Some of these operations **MIGHT BE DESTRUCTIVE!** Ensure you have everything backed up before making any changes.
+
+# Let's begin!
+
+First, clone the YAMS repository in any directory (**do NOT** use your installation directory!). For the purposes of this tutorial, I'll use `~/yams_upgrade`.
+
+
+```bash
+git clone --depth 1 https://gitlab.com/rogs/yams.git ~/yams_upgrade
+cd ~/yams_upgrade
+```
+
+## Setup .env.example
+
+Begin by opening the `.env.example` file. Add your correct information to the file. All this information is currently available in your YAMS v1 `docker-compose.yaml` file.
+
+For the purposes of this tutorial:
+
+- My `PUID` and `PGID` are both set to `1000`.
+- All the other settings are going to be the defaults set in the installer.
+- Your media server name must be in lowercase. Accepted values are: `jellyfin`, `emby`, and `plex`.
+- The VPN is set to be enabled (`y`) and configured to use Mullvad. If you are not using a VPN, leave the VPN configuration empty.
+
+Here's how it should look:
+
+
+```bash
+# Base configuration
+PUID=1000
+PGID=1000
+MEDIA_DIRECTORY=/srv/media
+INSTALL_LOCATION=/opt/yams
+MEDIA_SERVICE=jellyfin
+
+# VPN configuration
+VPN_ENABLED=y
+VPN_SERVICE=mullvad
+VPN_USER=12345678901234567890
+VPN_PASSWORD=12345678901234567890
+```
+
+## Setup the YAMS binary
+
+Now it's time to set up the `yams` binary. You need to replace some variables in this command, so proceed with caution:
+
+- For the first line, the format is `/your/install/location/docker-compose.yaml`. In this tutorial, the value should be `/opt/yams/docker-compose.yaml`.
+- For the second line, the format is `/your/install/location/docker-compose.custom.yaml`. In this tutorial, the value should be `/opt/yams/docker-compose.custom.yaml`.
+- For the third line, the format is `/your/install/location`. In this tutorial, the value should be `/opt/yams`.
+
+Run each of the `sed` commands separately!
+
+```bash
+sed -i -e "s|<filename>|/opt/yams/docker-compose.yaml|g" yams
+                      # ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ REPLACE THE FIRST LINE HERE BETWEEN THE "|"
+sed -i -e "s|<custom_file_filename>|/opt/yams/docker-compose.custom.yaml|g" yams
+                                  # ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ REPLACE THE SECOND LINE HERE BETWEEN THE "|"
+sed -i -e "s|<install_location>|/opt/yams|g" yams
+                               # ^^^^^^^^^ REPLACE THE THIRD LINE HERE BETWEEN THE "|"
+```
+
+## If you have custom containers:
+
+Move your custom containers to `docker-compose.custom.yaml`. If you need help, you can use this tutorial from the "Adding a container" section: [Add your own containers - Adding a container](/advanced/add-your-own-containers/#adding-a-container).
+
+# Finish the upgrade
+
+First, you need to stop YAMS. Run:
+
+```bash
+yams stop
+```
+
+## Copy the files to the correct locations
+
+Now that you have all the changes ready for your setup, you can copy the files to the correct location.
+
+### Copying .env.example file
+
+You need to copy the `.env.example` file to the correct location. For the purposes of this tutorial, I will copy it to `/opt/yams/` and rename it to `.env`:
+
+```bash
+cp .env.example /opt/yams/.env
+```
+
+### Copying the docker-compose.custom.yaml file
+
+Now, copy the file to the install location. For the purposes of this tutorial, I will copy it to `/opt/yams/`:
+
+```bash
+cp docker-compose.custom.yaml /opt/yams/
+```
+
+Let's also backup your current `docker-compose.yaml` configuration for safekeeping:
+
+```bash
+cp /your/install/location/docker-compose.yaml docker-compose.yaml.backup
+```
+
+### Copying the `yams` binary to the right place
+
+This command will copy the current `yams` binary for backup and copy the new `yams` binary to the right place:
+
+```bash
+cp $(which yams) yams-old
+sudo cp yams $(which yams)
+```
+
+### Run the upgrade!
+
+Now it's the time to execute the update!
+
+```bash
+yams update
+```
+
+Everything should be up and running!
+
+# That's done!
+
+YAMS should start back up again, and everything should be working as expected with the difference that now YAMS can be upgraded by using `yams upgrade`.
+
+If you have any issues upgrading from v1 to v2, you can create a new post in our forum: [YAMS Forum: Upgrading YAMS from v1 to v2](https://forum.yams.media/viewforum.php?f=26)