When I upgrade NixOS for my mini-server with:
$ sudo nixos-rebuild switch --upgrade
It tried to download tons of packages from http://nixos-cache.example.com/ which is
unbearable slow. Then I tried to build some of them instead of download the
prebuild version:
sudo nixos-rebuild switch --option substitute false
The upgrade failed when building gcc for not have enough free space. The SSD of
the mini-server have only 5G.
I have a server with socks5 proxy, which can access the cache.nixos.org faster.
It can be used as cache proxy to make sure the download reliable.
Here is the whole steps.
1 Create cache proxy with Nginx
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|
worker_processes 1;
master_process off;
error_log logs/error.log;
events {
worker_connections 1024;
}
http {
map $status $cache_header {
200 "public";
302 "public";
default "no-cache";
}
server {
listen 6699;
resolver 8.8.8.8;
set $upstream_endpoint http://cache.nixos.org;
location / {
error_page 404 = @fallback;
}
location @fallback {
proxy_pass $upstream_endpoint;
# proxy_cache cachecache;
proxy_cache_valid 200 302 60m;
expires max;
add_header Cache-Control $cache_header always;
}
location ~ ^/nix-cache-info {
proxy_store on;
proxy_store_access user:rw group:rw all:r;
proxy_temp_path /data/nginx/nix-cache-info/temp;
root /data/nginx/nix-cache-info/store;
proxy_set_header Host "cache.nixos.org";
proxy_pass https://cache.nixos.org;
}
location ~^/nar/.+$ {
proxy_store on;
proxy_store_access user:rw group:rw all:r;
proxy_temp_path /data/nginx/nar/temp;
root /data/nginx/nar/store;
proxy_set_header Host "cache.nixos.org";
proxy_pass https://cache.nixos.org;
}
}
|
2 Upgrade through cache proxy
sudo nixos-rebuild switch --option binary-caches "http://example.com:6699"
3 Links