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doc: mention that SNMP is required for Akvorado to work
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@@ -26,12 +26,12 @@ stop akvorado-exporter{1,2,3,4}`).
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Take a look at the `docker-compose.yml` file if you want to setup the
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Take a look at the `docker-compose.yml` file if you want to setup the
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GeoIP database. It requires two environment variables to fetch them
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GeoIP database. It requires two environment variables to fetch them
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from
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from [MaxMind](https://dev.maxmind.com/geoip/geolite2-free-geolocation-data).
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[MaxMind](https://dev.maxmind.com/geoip/geolite2-free-geolocation-data).
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Be sure to flush the conntrack table after starting. See the
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Be sure to flush the conntrack table after starting. See the
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[troubleshooting section](05-troubleshooting.md#no-packets-received)
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[troubleshooting section](05-troubleshooting.md#no-packets-received)
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for more details.
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for more details. You also need to configure SNMP on your exporters to
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accept requests from Akvorado.
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## Big picture
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## Big picture
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@@ -69,8 +69,9 @@ Here is a list of generic errors you may find:
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- `SNMP cache miss` means the information about an interface is not
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- `SNMP cache miss` means the information about an interface is not
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found in the SNMP cache. This is expected when Akvorado starts but
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found in the SNMP cache. This is expected when Akvorado starts but
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it should not increase. If this is the case, it may be because the
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it should not increase. If this is the case, it is likely because
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index provided in the flow is not available through SNMP.
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the exporter is not configured to accept SNMP requests or the
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community configured for SNMP is incorrect.
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- `sampling rate missing` means the sampling rate information is not
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- `sampling rate missing` means the sampling rate information is not
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present. This is also expected when Akvorado starts but it should
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present. This is also expected when Akvorado starts but it should
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not increase. With NetFlow, the sampling rate is sent in an options
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not increase. With NetFlow, the sampling rate is sent in an options
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