[squid-users] Squid 6.10 SSL-Bump Woes
Bryan Seitz
seitzbg at gmail.com
Thu Oct 10 22:08:03 UTC 2024
I removed the header mods and changed the refresh pattern to:
refresh_pattern . 15 20% 1800 override-expire
ignore-no-cache ignore-no-store ignore-private
And I always get TCP_MISS. Any other thoughts?
Thanks!
On Thu, Oct 10, 2024 at 12:35 PM Alex Rousskov <
rousskov at measurement-factory.com> wrote:
> On 2024-10-09 15:40, Bryan Seitz wrote:
>
> > SSL-Bump Woes
>
> AFAICT, the problem you are trying to solve is not caused by SslBump.
>
>
> > reply_header_access Cache-Control deny all
> > reply_header_add Cache-Control "public, max-age=1800"
>
> The above directives are applied to responses that Squid sends to
> clients. These post-cache response modification directives have no
> effect on Squid response caching decisions (which are done earlier,
> pre-cache, while looking at the virgin or adapted response received from
> the origin server of cache_peer).
>
> FWIW, this caveat is documented in reply_header_add description, but
> documentation improvements are welcome:
>
> > This option adds header fields to outgoing HTTP responses (i.e., response
> > headers delivered by Squid to the client). This option has no effect on
> > cache hit detection. The equivalent adaptation vectoring point in
> > ICAP terminology is post-cache RESPMOD.
>
>
> To allow Squid to violate HTTP caching rules when deciding whether to a
> cache a response, see refresh_pattern options (e.g., "ignore-private").
> http://www.squid-cache.org/Doc/config/refresh_pattern/
>
>
> HTH,
>
> Alex.
>
>
> > I have the following configuration:
> >
> > http_port 3128 ssl-bump generate-host-certificates=on
> > tls-cert=/etc/squid/ssl/myCA.pem
> > ssl_bump bump all
> >
> > # BMCs return Cache-Control: private
> > reply_header_access Cache-Control deny all
> > reply_header_add Cache-Control "public, max-age=1800"
> >
> > follow_x_forwarded_for allow all
> > http_access allow all
> > include /etc/squid/conf.d/*.conf
> > host_verify_strict off
> > tls_outgoing_options min-version=1.0
> > flags=DONT_VERIFY_PEER,DONT_VERIFY_DOMAIN
> > sslproxy_cert_error allow all
> >
> > sslcrtd_program /usr/lib/squid/security_file_certgen -s
> > /var/spool/squid/ssl_db -M 4MB
> > sslcrtd_children 5
> >
> > cache_mem 8192 MB
> > cache_dir rock /cm/squid/squid 8192
> >
> > buffered_logs on
> > access_log daemon:/var/log/squid/access.log logformat=squid
> > logfile_daemon /usr/lib/squid/log_file_daemon
> > cache_store_log daemon:/var/log/squid/store.log
> > log_mime_hdrs on
> > coredump_dir /var/spool/squid
> > shutdown_lifetime 2 seconds
> > max_filedesc 4096
> > workers 4
> >
> >
> > A curl will note the resource is stale (with new host), but I never get
> > a cache hit on subsequent retries:
> >
> > Store log:
> >
> > 1728502393.992 RELEASE -1 FFFFFFFF 02000000000000003A632F0003000000 200
> > 1728502382 -1 -1 application/json 1182/1182 GET
> >
> https://10.170.31.77/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> <
> https://10.170.31.77/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> >
> > 1728502395.674 RELEASE -1 FFFFFFFF 02000000000000003B632F0002000000 200
> > 1728502384 -1 -1 application/json 1182/1182 GET
> >
> https://10.170.31.77/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> <
> https://10.170.31.77/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> >
> > 1728502408.317 RELEASE 00 00056924 04000000000000003C632F0001000000 200
> > 1728420588 -1 1728422388 application/json 1189/1189 GET
> >
> https://10.170.31.81/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> <
> https://10.170.31.81/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> >
> > 1728502408.318 RELEASE -1 FFFFFFFF 03000000000000003C632F0001000000 200
> > 1728502404 -1 -1 application/json 1179/1179 GET
> >
> https://10.170.31.81/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> <
> https://10.170.31.81/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> >
> > 1728502417.161 RELEASE -1 FFFFFFFF 05000000000000003C632F0001000000 200
> > 1728502413 -1 -1 application/json 1179/1179 GET
> >
> https://10.170.31.81/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> <
> https://10.170.31.81/redfish/v1/Oem/Supermicro/HGX_H100/Systems/HGX_Baseboard_0/Processors/GPU_SXM_4/ProcessorMetrics
> >
> >
> > Response headers:
> >
> > HTTP/1.1 200 Connection established
> >
> > HTTP/1.1 200 OK
> > Link: <http://redfish.dmtf.org/schemas/v1/Z.v1_5_2.json
> > <http://redfish.dmtf.org/schemas/v1/Z.v1_5_2.json>>; rel=describedby
> > Allow: GET
> > Content-Length: 1179
> > Content-Type: application/json; charset=UTF-8
> > Strict-Transport-Security: max-age=31536000; includeSubdomains
> > X-XSS-Protection: 1; mode=block
> > Content-Security-Policy: default-src 'self';connect-src 'self' ws:
> > wss:;frame-src 'self';img-src 'self' data:;object-src 'self';font-src
> > 'self' data:;script-src 'self' 'unsafe-inline' 'unsafe-eval';style-src
> > 'self' 'unsafe-inline';worker-src 'self' blob:;
> > X-Frame-Options: SAMEORIGIN
> > X-Content-Type-Options: nosniff
> > OData-Version: 4.0
> > Date: Wed, 09 Oct 2024 19:35:50 GMT
> > Cache-Status: squid;detail=mismatch
> > Via: 1.1 squid (squid/6.10)
> > Connection: keep-alive
> > Cache-Control: public, max-age=1800
> >
> > If I use a cache peer with MITMPROXY, squid will cache the results
> > however this is inefficient and slow.
> >
> > --
> > Bryan Seitz
> > seitzbg at gmail.com <mailto:seitzbg at gmail.com>
> >
> > _______________________________________________
> > squid-users mailing list
> > squid-users at lists.squid-cache.org
> > https://lists.squid-cache.org/listinfo/squid-users
>
>
--
Bryan Seitz
seitzbg at gmail.com
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