From 71bfa305fd9269206b7e36f7e399e6cfc5c5ed69 Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Wed, 7 Jun 2017 17:07:52 +0200 Subject: [PATCH] docs: features/dns-cache: clean up --- docs/features/dns-cache.rst | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/docs/features/dns-cache.rst b/docs/features/dns-cache.rst index 985b65c0..92be66f6 100644 --- a/docs/features/dns-cache.rst +++ b/docs/features/dns-cache.rst @@ -1,9 +1,10 @@ -DNS-Caching +DNS caching =========== + User experience may be greatly improved when dns is accelerated. Also, it seems like a good idea to keep the number of packages being exchanged between node and gateway as small as possible. In order to do this, a -dns-cache may be used on a node. The dnsmasq instance listening on port +DNS cache may be used on a node. The dnsmasq instance listening on port 53 on the node will be reconfigured to answer requests, use a list of upstream servers and a specific cache size if the options listed below are added to site.conf. Upstream servers are the DNS servers which are normally @@ -12,14 +13,14 @@ used by the nodes to resolve hostnames (e.g. gateways/supernodes). There are the following settings: servers cacheentries - -If both options are set the node will cache as much DNS records as set with -'cacheentries' in RAM. The 'servers' list will be used to resolve the received -DNS-queries if the request cannot be answered from cache. -If these settings do not exist, the cache is not intialized and RAM-usage will not increase. -When next_node.name is set, an A-record and an AAAA-record for the -next-node-IP are placed in the dnsmasq configuration. This means that the content +If both options are set the node will cache as much DNS records as set with +'cacheentries' in RAM. The 'servers' list will be used to resolve the received +DNS queries if the request cannot be answered from cache. +If these settings do not exist, the cache is not intialized and RAM usage will not increase. + +When next_node.name is set, an A record and an AAAA record for the +next-node IP address are placed in the dnsmasq configuration. This means that the content of next_node.name may be resolved even without upstream connectivity. :: @@ -28,7 +29,7 @@ of next_node.name may be resolved even without upstream connectivity. cacheentries = 5000, servers = { '2001:db8::1', }, }, - + next_node = { name = 'nextnode', ip6 = '2001:db8:8::1',