Hi there, I'm hosting two squid servers (Version 4.6) on CentOS in Azure, which are placed behing an Azure load balancer.
The LB has a health probe which constantly polls the squid servers on port 3128. In the access.log, I can find a whole lot of entries like: 1557738944.935 0 168.63.129.16 NONE/000 0 NONE error:transaction-end-before-headers - HIER_NONE/- - Basically, the log gets flooded with this every few seconds. The source IP 168.63.129.16 is a platform IP of the Azure software-defined network, in this case it is the source of the LB health probe. I tried to filter these log entries by using the access_log directive. E.g.: Option 1) acl azurelb src 168.63.129.16/32 access_log none azurelb access_log daemon:/var/log/squid/access.log squid Option 2) (read about a bug in an older 3.x version, which can be worked around by using this) acl azurelb src 168.63.129.16/32 access_log daemon:/var/log/squid/access.log squid !azurelb Option 3) acl azurelbprobe url_regex ^error:transaction-end-before-headers access_log none azurelbprobe access_log daemon:/var/log/squid/access.log squid None of this worked. I still get the same entries in access.log. Any suggestion or hint will be appreciated. Thanks & regards Henning
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