Add a DNS server about clr-bundles HOT 12 CLOSED

On my list to do.

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With support for DNSSEC and updates. I need to be able to use nsupdate on the zone managed by the DNS server.

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I've been looking into powerdns as it separates the authoritative server from the caching server, which is an excellent way to mitigate all sorts of badness. It supports DNSSEC and dynamic DNS.

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glibc has nscd, which is a local caching server.

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a recursive caching server may still be wanted, and we can probably add both (nscd will probably be a pundle anyway).

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https://build.opensuse.org/package/view_file/Base:System/glibc/nscd.service?expand=1:

[Unit]
Description=Name Service Cache Daemon
After=sysinit.target
Wants=nss-lookup.target nss-user-lookup.target
Before=nss-lookup.target nss-user-lookup.target

[Service]
Type=forking
ExecStart=/usr/sbin/nscd
ExecStop=/usr/sbin/nscd --shutdown
ExecReload=/usr/sbin/nscd -i passwd
ExecReload=/usr/sbin/nscd -i group
ExecReload=/usr/sbin/nscd -i hosts
ExecReload=/usr/sbin/nscd -i services
ExecReload=/usr/sbin/nscd -i netgroup
Restart=always
PIDFile=/run/nscd/nscd.pid

[Install]
WantedBy=multi-user.target

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For local cache server we have dnsmasq already

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more diversity is good, nscd may be interesting for some people, so we should just carry it as well.

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nscd can cache more than hostnames, though the value of caching any of those others is dubious.

dnsmasq can server as a DNS server outside of your own machine, though. It also helps that /etc/resolv.conf remains unmodified when you roam.

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the biggest gap is lack of authoritative server. I'm about ready to push pdns into clear and bundle it.

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I'm also adding pdns-recursor at the same time.

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pdns and the recursor are now in a release. I'll be doing some brushing up on them in the next few days to make it nice (e.g. enable pgsql and sqlite, better default config and setup etc.).

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