Nginx config to route to multiple Eth1 providers

eth1.conf

# turn off default logging
access_log off;

# Create our own format including $server_name
log_format main escape=none 
                            #'$remote_addr - $remote_user '
                            '[$time_local] '
                            '$request $status '
                            #'"$http_user_agent" '
                            #'"$http_origin" '
                            '$server_name '
                            '\n    $request_body' # this allows us to see the json payload in the POST requests to the API
;

# declare a collection of eth1 providers
upstream eth1-providers {
    server 127.0.0.1:8443;
    server 127.0.0.1:8444;
}

# define an eth1 provider
server {
    server_name 'mainnet.infura.io';
    listen 127.0.0.1:8443;
    location / { proxy_pass https://mainnet.infura.io/v3/0b0b00329ed940a3a550a975941d1b86; }
    access_log /var/log/nginx/access.log main;
}

# define an eth1 provider
server {
    server_name 'mainnet.alchemyapi.io';
    listen 127.0.0.1:8444;
    location / { proxy_pass https://eth-mainnet.alchemyapi.io/v2/rNimfONsJagljpBDABGySslN0YeorXtU; }
    access_log /var/log/nginx/access.log main;
}

# define the external interface to talk to the collection of eth1 providers
server {
    listen 127.0.0.1:6666;
    location / { proxy_pass http://eth1-providers; }
    # proxy_set_header origin https://<your-ip-here>; Optional, can be used to secure Infura to a single origin
}