[Pagespeed] Uptream nginx and proxy_pass

[Thach Nguyen]

Hello everyone,

I have a problem about pagespeed, can you help me, please?

I installed nginx with module pagespeed on LoadBalance01(uptream):

"curl -I https://www.example.com/company/abc |grep X-Page-Speed

X-Page-Speed: 1.11.33.4-0"

I created path cache : /data/nginx/ngx_pagespeed_cache

Firstly, pagespeed acts very well. I backup these configuration files, copy to Loadblance02(this server similar to Loadbalance01). Loadbalance01 sometime compress images, but usually, it gets images with 4k size. On LoadBalance01, then i clear cache (rm -rf nginx/ngx_pagespeed_cache/*), now it the same LoadBalance01. I don't understand this problem. Please help me.

[Otto van der Schaaf]

To flush mod_pagespeed's caches, rm'ing the directory is not the way to do it. See https://modpagespeed.com/doc/system#flush_cache

To help you best, it would be great to have some more information:

- Are the 4k images corrupt? Or are they just not optimized?

- Can you post the configuration files (anonymized if needed)?

- It looks like the servers with ngx_pagespeed running behind a load balancer? 

    - Is https terminated at the load balancer?

    - Does the module work correctly when you query the servers directly?

Otto

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