local function scrape()
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metric("node_nf_conntrack_entries", "gauge", nil,
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string.sub(get_contents("/proc/sys/net/netfilter/nf_conntrack_count"), 1, -2))
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metric("node_nf_conntrack_entries_limit", "gauge", nil,
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string.sub(get_contents("/proc/sys/net/netfilter/nf_conntrack_max"), 1, -2))
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end
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return { scrape = scrape }
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