- local function scrape()
- -- documetation about nf_conntrack:
- -- https://www.frozentux.net/iptables-tutorial/chunkyhtml/x1309.html
- nat_metric = metric("node_nat_traffic", "gauge" )
- for e in io.lines("/proc/net/nf_conntrack") do
- -- output(string.format("%s\n",e ))
- local fields = space_split(e)
- local src, dest, bytes;
- bytes = 0;
- for _, field in ipairs(fields) do
- if src == nil and string.match(field, '^src') then
- src = string.match(field,"src=([^ ]+)");
- elseif dest == nil and string.match(field, '^dst') then
- dest = string.match(field,"dst=([^ ]+)");
- elseif string.match(field, '^bytes') then
- local b = string.match(field, "bytes=([^ ]+)");
- bytes = bytes + b;
- -- output(string.format("\t%d %s",ii,field ));
- end
-
- end
- -- local src, dest, bytes = string.match(natstat[i], "src=([^ ]+) dst=([^ ]+) .- bytes=([^ ]+)");
- -- local src, dest, bytes = string.match(natstat[i], "src=([^ ]+) dst=([^ ]+) sport=[^ ]+ dport=[^ ]+ packets=[^ ]+ bytes=([^ ]+)")
-
- local labels = { src = src, dest = dest }
- -- output(string.format("src=|%s| dest=|%s| bytes=|%s|", src, dest, bytes ))
- nat_metric(labels, bytes )
- end
- end
-
- return { scrape = scrape }
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