Recently facing issue of squid stop working. it was working fine when there was little load on it.
Our system administrator configure group policy to enabled proxy on all desktops with exception in proxy settings to local network.
Reason to increase load on proxy is; Google chrome browser - when opened, it try to open chrome sign-in page which redirect to client1.google.com and so on.
all these request get denied on proxy. Same with IE's bing home page try to connect MS site.
So I carry out following changes to squid config file
- Cache_dir value from 1024 to 10240.
- Since we have Kerberos auth cofnigured for SSO, I also increase auth_param negotiate children from 10 to 20.
after this it start working as of now.
I need to know what all caution I need to take more to avoid further issue.
attached is squidclient o/p and squid.conf for analysis.
Thanks & Regards
Nilesh Suresh Gavali
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Attachment:
Squid_23092016.conf
Description: Binary data
HTTP/1.0 200 OK Server: squid/3.1.10 Mime-Version: 1.0 Date: Fri, 23 Sep 2016 15:50:20 GMT Content-Type: text/plain Expires: Fri, 23 Sep 2016 15:50:20 GMT Last-Modified: Fri, 23 Sep 2016 15:50:20 GMT X-Cache: MISS from dbscldlsc02 X-Cache-Lookup: MISS from cldlsc02:8080 Via: 1.0 cldlsc02 (squid/3.1.10) Connection: close Squid Object Cache: Version 3.1.10 Start Time: Fri, 23 Sep 2016 15:17:31 GMT Current Time: Fri, 23 Sep 2016 15:50:20 GMT Connection information for squid: Number of clients accessing cache: 23 Number of HTTP requests received: 42462 Number of ICP messages received: 0 Number of ICP messages sent: 0 Number of queued ICP replies: 0 Number of HTCP messages received: 0 Number of HTCP messages sent: 0 Request failure ratio: 0.00 Average HTTP requests per minute since start: 1293.9 Average ICP messages per minute since start: 0.0 Select loop called: 687247 times, 2.865 ms avg Cache information for squid: Hits as % of all requests: 5min: 0.0%, 60min: 0.0% Hits as % of bytes sent: 5min: 99.9%, 60min: 99.7% Memory hits as % of hit requests: 5min: 0.0%, 60min: 0.0% Disk hits as % of hit requests: 5min: 0.0%, 60min: 100.0% Storage Swap size: 1887008 KB Storage Swap capacity: 18.0% used, 82.0% free Storage Mem size: 624 KB Storage Mem capacity: 0.2% used, 99.8% free Mean Object Size: 704.37 KB Requests given to unlinkd: 0 Median Service Times (seconds) 5 min 60 min: HTTP Requests (All): 0.05951 0.06640 Cache Misses: 60.63467 0.02899 Cache Hits: 0.00000 0.00000 Near Hits: 0.00000 0.00000 Not-Modified Replies: 0.00000 0.00000 DNS Lookups: 0.00000 0.00000 ICP Queries: 0.00000 0.00000 Resource usage for squid: UP Time: 1969.022 seconds CPU Time: 47.674 seconds CPU Usage: 2.42% CPU Usage, 5 minute avg: 2.62% CPU Usage, 60 minute avg: 2.41% Process Data Segment Size via sbrk(): 6948 KB Maximum Resident Size: 58528 KB Page faults with physical i/o: 0 Memory usage for squid via mallinfo(): Total space in arena: 7080 KB Ordinary blocks: 6607 KB 202 blks Small blocks: 0 KB 0 blks Holding blocks: 1612 KB 5 blks Free Small blocks: 0 KB Free Ordinary blocks: 472 KB Total in use: 8219 KB 95% Total free: 472 KB 5% Total size: 8692 KB Memory accounted for: Total accounted: 3100 KB 36% memPool accounted: 3100 KB 36% memPool unaccounted: 5591 KB 64% memPoolAlloc calls: 5723065 memPoolFree calls: 5786850 File descriptor usage for squid: Maximum number of file descriptors: 1024 Largest file desc currently in use: 92 Number of file desc currently in use: 65 Files queued for open: 0 Available number of file descriptors: 959 Reserved number of file descriptors: 100 Store Disk files open: 0 Internal Data Structures: 2706 StoreEntries 30 StoreEntries with MemObjects 29 Hot Object Cache Items 2679 on-disk objects
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