# Migration from horst-1 to horst-2

## postgres database

```bash
# [DONE] install postgres
apt update
apt install -y curl ca-certificates gnupg lsb-release

# PGDG signing key (keyring-style, not the deprecated apt-key)
sudo install -d /usr/share/postgresql-common/pgdg
sudo curl -fsSL https://www.postgresql.org/media/keys/ACCC4CF8.asc \
  -o /usr/share/postgresql-common/pgdg/apt.postgresql.org.asc

# repo
echo "deb [signed-by=/usr/share/postgresql-common/pgdg/apt.postgresql.org.asc] \
https://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" \
| sudo tee /etc/apt/sources.list.d/pgdg.list

sudo apt update
sudo apt install -y postgresql-18 postgresql-contrib-18

# backup database from horst-1
# users backup
pg_dumpall --globals-only -h 10.0.0.5 -U postgres > /tmp/pg-dumpall-globals
# data backup
pg_dump -h 10.0.0.5 -U postgres -C psmf > /tmp/psmf.pgsql

# restore backup of database from horst-1
# create users 
cat /tmp/pg-dumpall-globals | psql
# restore psmf database
cat /tmp/psmf.pgsql | psql

# install docker oin horst-2
# Docker's GPG key (keyring, not apt-key)
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
  -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# repo
echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] \
https://download.docker.com/linux/ubuntu \
$(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update
sudo apt-get install -y \
  docker-ce docker-ce-cli containerd.io \
  docker-buildx-plugin docker-compose-plugin


# [DONE] dockerize php intranet app
# dockerized + upgraded to PHP 8.3.31

# [DONE] start psmf app on horst-2 and point it to database on horst

# [TODO] point php app on horst-1 to horst-2

# validate application is still working
# [OK] - wkhtml - PDF printing of html pages
# prepare local backups
# validate if pg sync to api still works from horst-1
# set sync to api on horst-2
# install nginx and configure default site as reverse proxy to horst-1
sudo apt-get update
sudo apt-get install -y nginx

# drop the proxy config in place (file lives in this repo at servers/psmf/files/nginx/default)
sudo install -m 0644 -o root -g root \
    servers/psmf/files/nginx/default /etc/nginx/sites-available/default

# sites-enabled/default is already a symlink to ../sites-available/default on a stock Ubuntu install
sudo nginx -t
sudo systemctl reload nginx
sudo systemctl enable nginx

# intranet vhosts: psmf.intranet -> horst-1, psmf-new.intranet -> local docker app
# (depends on the dnsmasq setup in servers/psmf/dns-configuration.md)
sudo install -m 0644 -o root -g root \
    servers/psmf/files/nginx/psmf.intranet     /etc/nginx/sites-available/psmf.intranet
sudo install -m 0644 -o root -g root \
    servers/psmf/files/nginx/psmf-new.intranet /etc/nginx/sites-available/psmf-new.intranet

sudo ln -sf ../sites-available/psmf.intranet     /etc/nginx/sites-enabled/psmf.intranet
sudo ln -sf ../sites-available/psmf-new.intranet /etc/nginx/sites-enabled/psmf-new.intranet

sudo nginx -t
sudo systemctl reload nginx

```