brewbuild

brewbuild.bash

### Create User
Create user brewai
```bash
adduser brewai
```
Password: 

Grant root access
```bash
usermod -aG sudo brewai
```
No password for sudo
```bash
echo "$USER ALL=(ALL) NOPASSWD:ALL" | sudo tee -a /etc/sudoers
```

Logout and then
```bash
ssh brewai@
```
password: 

### Prepare machine

```bash
sudo apt-get update
sudo apt -y upgrade
sudo apt -y install build-essential unzip
```
As default python version is 3.8 and pytorch only works on 3.7. We use anaconda which can specify the right python version.

```bash
wget https://repo.anaconda.com/archive/Anaconda3-2021.05-Linux-x86_64.sh
bash Anaconda3-2021.05-Linux-x86_64.sh
```
Install nginx and supervisor
```bash
sudo apt -y install nginx
sudo apt -y install supervisor
```

### Install mongodb
```bash
sudo apt-get install gnupg
wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add -
```
This is for ubuntu 20 only, other versions of ubuntu please refer to
https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
```bash
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
```
Then
```bash
sudo apt-get update
sudo apt-get install -y mongodb-org
```
Create username and password

```mongodb
use brewai
db.users.insert({'uid':'admin','pwd':'pbkdf2:sha256:150000$g7DcUjwd$c073e01fd2754f1acbac5eede9da7a921b92195d68eb1e6559f4003e7a7e1ccf'})
```
username: 
password: 

### Prepare brewui and brewcore
git clone the repo
```bash
git clone https://andyzengbrew@github.com/gavinwhyte/brewui_flask.git
mv brewui_flask/ brewui
cd brewui/app/static/
mkdir cache
```
creat the virtual env
```bash
cd brewui
conda create --name brewui python=3.7 
conda activate brewui
pip install --no-cache-dir -r requirements.txt
```
git clone the repo
```bash
git clone https://andyzengbrew@github.com/gavinwhyte/brewcore.git
```
creat the virtual env
```bash
cd brewcore
conda create --name brewcore python=3.7 
conda activate brewcore
pip install --no-cache-dir -r requirements.txt
```
create folders for logs and data
```bash
cd ~/
mkdir logs
mkdir data
```

### Setup web service
Setup supervisor
```bash
cd /etc/supervisor/conf.d/
sudo vi flask.conf
```
Add in content as below
```bash
[program:flask]
command=/home/brewai/anaconda3/envs/brewui/bin/gunicorn run:app -c /home/brewai/brewui/conf/gunicorn.conf
directory=/home/brewai/brewui/
user=brewai
autostart=true
autorestart=true
stdout_logfile=/home/brewai/logs/gunicorn_supervisor.log
```
Start supervisor

```bash
sudo service supervisor start
sudo supervisorctl reread
sudo supervisorctl update
sudo supervisorctl start flask
```
Config nginx
```bash
cd /etc/nginx/sites-available/
sudo vi brewai
```
Write the below content
```bash
server {
    listen 80;
    server_name demo.brewai.com;

    location / {
        proxy_pass http://127.0.0.1:8000;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
    client_max_body_size 500M;
}
```

Link it
```bash
sudo ln -sf /etc/nginx/sites-available/brewai /etc/nginx/sites-enabled/default
sudo service nginx restart
```


### Setup ssl
```bash
sudo apt -y install certbot python3-certbot-nginx
sudo certbot --nginx -d demo.brewai.com
```



### Launch brewai_train and brewai_predict
```bash
nohup /home/brewai/anaconda3/envs/brewcore/bin/python /home/brewai/brewcore/brewai_train.py > /home/brewai/logs/brewai_train.log 2>&1 &

nohup /home/brewai/anaconda3/envs/brewcore/bin/python /home/brewai/brewcore/brewai_predict.py > /home/brewai/logs/brewai_predict.log 2>&1 &
```
or 
```bash
nohup /home/brewai/anaconda3/envs/brewcore/bin/python /home/brewai/brewcore/brewai_backend.py > /home/brewai/logs/brewai_backend.log 2>&1 &
```