Hi
We have 5 squid workers, we need to handle around 8k concurrent users.
Based on this, what's the auth_param values that you recommend for
children, idle and startup?
How to know if the helper supports concurrent requests?
winbindd: Exceeding 500 client connections, no idle connection found
I will increase this value to check if help to settle the issue
On 25/07/2024 14:28, Alex Rousskov wrote:
On 2024-07-23 19:20, Andre Bolinhas wrote:
winbindd: Exceeding 500 client connections, no idle connection found
auth_param ntlm children 500 ...
I know virtually nothing about WINDBIND and the authentication helper
you are using, but configuring Squid to have 500 helper processes is
usually a mistake, even with a single Squid worker. YMMV, but I would
try to use a lot fewer helpers (e.g., 10) and increase that number
only if such an increase actually improves things.
If possible, use a helper that supports concurrent requests.
If your Squid is not competing for resources with other applications
on the server, then I also recommend keeping a _constant_ number of
helper processes (instead of asking Squid to start many new helper
processes at the worse possible time -- when the load on Squid
increases). To do that, make startup and idle parameters the same as
the maximum number of children.
HTH,
Alex.
P.S. The credit for highlighting the correlation between winbindd
errors and "auth_param ntlm children 500" goes to Andrey K.
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