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Internet Related/Filtering/Firewall Thread, Squid Dropping for a few seconds in Technical; Hi I have Ubuntu 9.04 running squid and dansguardian, with 2 nics installed one for internal lan and the other ...
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    Squid Dropping for a few seconds

    Hi

    I have Ubuntu 9.04 running squid and dansguardian, with 2 nics installed one for internal lan and the other configured for wan. Just recently we have noticed Internet dropping for just a few seconds, a constant Ping shows the squid server timing out for a few seconds and then it comes back again and everything is fine. This can happen random times during the day.

    Does anyone know of any logs I can look at that might shed a bit of light?

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    HI

    have a look and top and see if its running on 100% cpu. Also have a check if you are running out of disk space and you have log rotation running on the logs. Log files can take up a lot of space.

    Richard

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    If it's not responding to Ping the problem isn't with squid it's with the network interface.

    If your server is connected to a managed switch you should be able to check link status on there. I would also make sure duplex settings are correct.

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    Keep an eye on the hardware. We recently had our proxy server develop memory issues. As a work around we put in a generic black box that would run ok, then seriously slow down after a few hours. Running top didn't show that squid was eating up all CPU use, and we couldn't figure out what the problem is. Eventually we put our server back in, minus faulty ram, and everything is ok now.

    The funny part is that both were running Ubuntu 9.10 x86 desktop, and the black box had it's config files copied from the other server. Was most head scratching.

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    Thanks for your comments - CPU does max out for a few seconds, but no correlation with loss of network connectivity/ memory and logs both fine. I have a feeling it could be one of the NICs, it's quite an old box I'm using.

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