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Update from scratch instructions to use embedded pictrs (#157)

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86
src/en/administration/from_scratch.md
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@ -8,14 +8,30 @@ These instructions are written for Ubuntu 20.04.
It is built from source, so this may take a while, especially on slow devices. For example, Lemmy v0.12.2 takes 17 minutes to build on a dual core VPS. If you prefer prebuilt binaries, use Docker.
Install Rust by following the instructions on [Rustup](https://rustup.rs/).
Lemmy supports image hosting using [pict-rs](https://git.asonix.dog/asonix/pict-rs/). We need to install a couple of dependencies for this. You can also skip these steps if you don't require image hosting.
Pict-rs requires the `magick` command which comes with Imagemagick version 7, but Ubuntu 20.04 only comes with Imagemagick 6. So you need to install that command manually, eg from the [official website](https://imagemagick.org/script/download.php#linux).
```bash
apt install ffmpeg exiftool libgexiv2-dev --no-install-recommends
wget https://download.imagemagick.org/ImageMagick/download/binaries/magick
# compare hash with the "message digest" on the official page linked above
sha256sum magick
mv magick /usr/bin/
chmod 755 /usr/bin/magick
```
Compile and install Lemmy, setup database:
```bash
apt install pkg-config libssl-dev libpq-dev cargo postgresql
apt install pkg-config libssl-dev libpq-dev postgresql
# installs latest release, you can also specify one with --version
# The --locked argument uses the exact versions of dependencies specified in
# `cargo.lock`at release time. Running it without the flag will use newer minor
# release versions of those dependencies, which are not always guaranteed to compile.
cargo install lemmy_server --target-dir /usr/bin/ --locked
# Remove the parameter `--features embed-pictrs` if you don't require image hosting.
cargo install lemmy_server --target-dir /usr/bin/ --locked --features embed-pictrs
# replace db-passwd with a randomly generated password
sudo -iu postgres psql -c "CREATE USER lemmy WITH PASSWORD 'db-passwd';"
sudo -iu postgres psql -c "CREATE DATABASE lemmy WITH OWNER lemmy;"
@ -35,6 +51,10 @@ Minimal Lemmy config, put this in `/etc/lemmy/lemmy.hjson` (see [here](https://g
federation: {
enabled: true
}
# remove this block if you don't require image hosting
pictrs: {
url: "http://localhost:8080/"
}
}
```
@ -48,6 +68,9 @@ After=network.target
User=lemmy
ExecStart=/usr/bin/lemmy_server
Environment=LEMMY_CONFIG_LOCATION=/etc/lemmy/lemmy.hjson
# remove these two lines if you don't need pict-rs
Environment=PICTRS_PATH=/var/lib/pictrs
Environment=PICTRS_ADDR=127.0.0.1:8080
Restart=on-failure
# Hardening
@ -60,7 +83,7 @@ NoNewPrivileges=true
WantedBy=multi-user.target
```
If you did everything right, the Lemmy logs from `journalctl -u lemmy` should show "Starting http server at 127.0.0.1:8536". You can also run `curl localhost:8536/api/{version}/site` which should give a successful response, looking like `{"site_view":null,"admins":[],"banned":[],"online":0,"version":"unknown version","my_user":null,"federated_instances":null}`.
If you did everything right, the Lemmy logs from `journalctl -u lemmy` should show "Starting http server at 127.0.0.1:8536". You can also run `curl localhost:8536/api/{version}/site` which should give a successful response, looking like `{"site_view":null,"admins":[],"banned":[],"online":0,"version":"unknown version","my_user":null,"federated_instances":null}`. For pict-rs, run `curl 127.0.0.1:8080` and ensure that it outputs nothing (particularly no errors).
### Install lemmy-ui (web frontend)
@ -74,7 +97,7 @@ curl -fsSL https://deb.nodesource.com/setup_12.x | sudo -E bash -
sudo apt install nodejs yarn
```
Clone the git repo, checkout the version you want (0.12.2 in this case), and compile it.
Clone the git repo, checkout the version you want (0.16.7 in this case), and compile it.
```bash
mkdir /var/lib/lemmy-ui
cd /var/lib/lemmy-ui
@ -82,7 +105,7 @@ chown lemmy:lemmy .
# dont compile as admin
sudo -u lemmy bash
git clone https://github.com/LemmyNet/lemmy-ui.git --recursive .
git checkout 0.12.2 # replace with the version you want to install
git checkout 0.16.7 # replace with the version you want to install
yarn install --pure-lockfile
yarn build:prod
exit
@ -145,64 +168,13 @@ nginx -s reload
Now open your Lemmy domain in the browser, and it should show you a configuration screen. Use it to create the first admin user and the default community.
### Pict-rs (for image hosting, optional)
Pict-rs requires a newer Rust version than the one available in Ubuntu 20.04 repos. So you need to install [Rustup](https://rustup.rs/) which installs the toolchain for you.
```bash
apt install ffmpeg exiftool libgexiv2-dev --no-install-recommends
adduser pictrs --system --disabled-login --no-create-home --group
mkdir /var/lib/pictrs-source
cd /var/lib/pictrs
git clone https://git.asonix.dog/asonix/pict-rs.git .
# check docker-compose.yml for pict-rs version used by lemmy
# https://github.com/LemmyNet/lemmy-ansible/blob/main/templates/docker-compose.yml#L40
git checkout v0.2.6-r2
# or simply add the bin folder to your $PATH
$HOME/.cargo/bin/cargo build --release
cp target/release/pict-rs /usr/bin/
# create folder to store image data
mkdir /var/lib/pictrs
chown pictrs:pictrs /var/lib/pictrs
```
Pict-rs requires the `magick` command which comes with Imagemagick version 7, but Ubuntu 20.04 only comes with Imagemagick 6. So you need to install that command manually, eg from the [official website](https://imagemagick.org/script/download.php#linux).
```
wget https://download.imagemagick.org/ImageMagick/download/binaries/magick
# compare hash with the "message digest" on the official page linked above
sha256sum magick
mv magick /usr/bin/
chmod 755 /usr/bin/magick
```
Just like before, place the config below in `/etc/systemd/system/pictrs.service`, then run `systemctl enable pictrs` and `systemctl start pictrs`.
```
[Unit]
Description=pict-rs - A simple image host
After=network.target
[Service]
User=pictrs
ExecStart=/usr/bin/pict-rs
Environment=PICTRS_PATH=/var/lib/pictrs
Environment=PICTRS_ADDR=127.0.0.1:8080
Restart=on-failure
[Install]
WantedBy=multi-user.target
```
If it is working correctly, `curl 127.0.0.1:8080` should output nothing (particularly no errors).
Now add the line `pictrs_url: "http://127.0.0.1:8080"` to `/etc/lemmy/lemmy.hjson` so that Lemmy knows how to reach Pict-rs. Then restart Lemmy with `systemctl restart lemmy`, and image uploads should be working.
## Upgrading
### Lemmy
```bash
# installs latest release, you can also specify one with --version
cargo install lemmy_server --target-dir /usr/bin/
cargo install lemmy_server --target-dir /usr/bin/ --features embed-pictrs
systemctl restart lemmy
```

4
src/en/contributing/local_development.md
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@ -5,7 +5,7 @@ Install Rust using [the recommended option on rust-lang.org](https://www.rust-la
#### Debian-based distro
```
sudo apt install git cargo libssl-dev pkg-config libpq-dev yarn curl gnupg2 espeak
sudo apt install git cargo libssl-dev pkg-config libpq-dev curl
# install yarn
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
@ -14,7 +14,7 @@ sudo apt update && sudo apt install yarn
#### Arch-based distro
```
sudo pacman -S git cargo libssl-dev pkg-config libpq-dev yarn curl gnupg2 espeak
sudo pacman -S git cargo libssl-dev pkg-config libpq-dev curl
# install yarn (stable)
curl -o- -L https://yarnpkg.com/install.sh | bash
```