Re: worker_connections are not enough, reusing connections with idle workers

limits are for the user that nginx runs at (only the master process runs as root). Roger > On Jun 7, 2022, at 2:29 PM, Sergey A. Osokin wrote: > > On Tue, Jun 07, 2022 at 01:18:36PM -0700, Roger Fischer wrote: >> >> We are simulating 1000 clients. Some get cache h

Re: worker_connections are not enough, reusing connections with idle workers

there anything we can configure to more evenly distribute the connections? Thanks… Roger > On Jun 3, 2022, at 8:40 PM, Sergey A. Osokin wrote: > > Hi Roger, > > hope you're doing well. > > On Fri, Jun 03, 2022 at 05:38:07PM -0700, Roger Fischer wrote: >> Hello,

worker_connections are not enough, reusing connections with idle workers

Hello, my understanding is that worker_connections applies to each worker (eg. when set to 1024, 10 worker processes could handle up to 10240 connections). But we are seeing 1024 worker_connections are not enough, reusing connections from one worker while other workers are idle. Is there somet

Preferred method to reopen the log with logrotate

Hello, there seem to be two methods to tell nginx to re-open the log file after the file was rotated (we use logrotate). 1) nginx -s reopen 2) kill -USR1 Which is the preferred method, and why. I am asking because we have seen nginx -s reopen failing because of a transient issue with the con

corrupted cache file: proxy_cache_valid ignored

Hello, we have observed a case where it seems that the proxy_cache_valid directive is ignored. nginx version: 1.19.9 Config: proxy_cache_valid 200 206 30d; Scenario: * A cache file was corrupted (a file system issue). A part of the section that contains the headers had been overwritten with

large number of cache files

Hello, from a practical perspective, what would be considered an unreasonable large number of cache files (unique cache keys) in a single nginx server? 1M, 10M, 100M? With a large cache, would there be any significant benefit in using multiple caches (multiple key_zones) in a single nginx serv

Re: proxy_cache_path 'inactive' vs http cache-control / expires headers?

Thanks, Maxim, for correcting my misunderstanding. With what frequency is the cache manger run? Roger > On Apr 3, 2020, at 9:26 AM, Maxim Dounin wrote: > > Hello! > > On Fri, Apr 03, 2020 at 08:33:43AM -0700, Roger Fischer wrote: > >>> You can just set the ina

Re: proxy_cache_path 'inactive' vs http cache-control / expires headers?

> You can just set the inactive time longer than your possible maximum expire > time for the objects then the cache manager won't purge the cache files even > the object is still valid but not accessed. That may only have a small impact. As far as I understand: NGINX will remove an item only

filter to modify upstream response before it is cached

Hello, is there a hook into the nginx processing to modify the response body (and headers) before they are cached when using with proxy_pass? I am aware of the body filters (http://nginx.org/en/docs/dev/development_guide.html#http_body_filters

Multiple server_name directives in same server block?

Hello, is it possible to have multiple server_name directives in the same server block? I.e. is the following possible? server { listen 1.2.3.4:443 ssl; server_name *.site1.org *.site2.org; server_name ~^app1.*\.site3\.org$; …. Or do I need to create a second server block? Than

Check if a resource is in the cache

Hello, is there a way to check if a requested resource is in the cache? For example, “if” has the option “-f”, which could be used to check if a static file is present. Is there something similar for a cached resource? Thanks… Roger ___ nginx maili

proxy_store: is it used much?

Hello, proxy_store seems to be a much simpler alternative to “cache" pseudo-static resources. But there is very little discussion of it on the Internet or nginx forum (compared to proxy_cache). Is there anything non-obvious that speaks agains the use of proxy_store? Thanks… Roger ___

Add header to response before response is cached

Hello, is there a way in an NGINX HTTP Proxy to add a header to the response before it is cached? I would like to capture some information from the request and add it to the cached response, so that all clients getting the cached response receive that info. Thanks… Roger ___

NGINX send 206 but wget retries

Hello, I am making a byte range request to NGINX using wget. NGINX responds with status code 206 (partial content), but instead of downloading the content, wget retries. Request: wget -S 'http://cache.example.com/video5.ts' --header="Range: bytes=0-1023" Output from wget: --2019-08-02 15:36:

proxy_ignore_client_abort with cache

Hello, I am using NGINX (1.17.0) as a reverse proxy with cache. I want the cache to be updated even when the client closes the connection before the response is delivered to the client. Will setting proxy_ignore_client_abort to on do this? Details: The client makes a HTTP range request on a l

Re: Slow OPTIONS requests with reverse proxy cache

ote: > > Hello! > > On Wed, Jan 23, 2019 at 09:03:33AM -0800, Roger Fischer wrote: > >> I am using the community version of NGINX, where these variables >> are not available (I was quite disappointed by that). > > Again: these variables are available in all known varia

Re: Slow OPTIONS requests with reverse proxy cache

I am using the community version of NGINX, where these variables are not available (I was quite disappointed by that). Roger > On Jan 23, 2019, at 5:23 AM, Maxim Dounin wrote: > > Hello! > > On Tue, Jan 22, 2019 at 04:48:23PM -0800, Roger Fischer wrote: > >>

Slow OPTIONS requests with reverse proxy cache

Hello, I have noticed that the response to OPTIONS requests via a reverse proxy cache are quite slow. The browser reports 600 ms or more of idle time until NGINX provides the response. I am using the community edition of NGINX, so I don’t have any timing for the upstream request. As I understa

Re: Two cache files with same key

ad04a9740_corrected.mpd Roger > On Jan 17, 2019, at 12:12 PM, Lucas Rolff wrote: > > What key do you see and what's your cache key configured as? > > On 17/01/2019, 20.39, "nginx on behalf of Roger Fischer" > wrote: > >Hello, > >I am using

Two cache files with same key

Hello, I am using the nginx cache. I observed a MISS when I expected a HIT. When I look at the cache, I see the same page (file) twice in the cache, the original that I expected to HIT on, and the new one from the MISS (that should have been a HIT). The key, as viewed in the cache file, is exa

logical or in location directive with regex (multiple location using same block)

Hello, how do I best handle multiple locations that use the same code block? I do not want to repeat the { … } part. Is there a way to do this with logical or between regular expressions? The first variation is that sometimes there are query parameters, and sometimes there are not. The second

Re: Securing the HTTPS private key

nginx. > > But till a memory dump of the app would get you the private key. > > > > > On Fri, 16 Nov 2018 at 00:03, Maxim Dounin <mailto:mdou...@mdounin.ru>> wrote: > Hello! > > On Wed, Nov 14, 2018 at 12:17:57PM -0800, Roger Fischer wrote: > >

Listen on transient address

Hello, I have an NGINX instance that listens on a tunnel (and some other interfaces). When NGINX was restarted while the tunnel was down (tun device and address did not exist), NGINX failed to start. [emerg] 1344#1344: bind() to 38.88.78.19:443 failed (99: Cannot assign requested address) Rel

Securing the HTTPS private key

Hello, does NGINX support any mechanisms to securely access the private key of server certificates? Specifically, could NGINX make a request to a key store, rather than reading from a local file? Are there any best practices for keeping private keys secure? I understand the basics. The key fi

Add Header to cached response?

Hello, is there a way to add a header to the cached response? I have used ngx_http_headers_module’s add_header directive, which adds the header to the response at the time the response is generated. What I would like to do is to add a response header at the time when the upstream request is ma

Re: Ignore Certificate Errors

is in widespread use. Roger > On Aug 30, 2018, at 11:13 AM, Maxim Dounin wrote: > > Hello! > > On Thu, Aug 30, 2018 at 09:09:44AM -0700, Roger Fischer wrote: > >> Hello, >> >> is there a way to make NGINX more forgiving on TLS certificate errors? Or >

Ignore Certificate Errors

Hello, is there a way to make NGINX more forgiving on TLS certificate errors? Or would that have to be done in OpenSSL instead? When I use openssl s_client, I get the following errors from the upstream server: 140226185430680:error:0407006A:rsa routines:RSA_padding_check_PKCS1_type_1:block ty

Actions after cache miss is detected

Hello, Is there a way to perform an action after a cache miss is detected but before the request is forwarded to the upstream server? Specifically, on a cache miss I want to: Return a response instead of forwarding the request to the upstream server. Trigger a handler (module or script) that exe