48 lines
1.2 KiB
Bash
48 lines
1.2 KiB
Bash
# DNS: Configure a DNS server using nsd
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#######################################
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# After running this script, you also must run scripts/dns_update.sh,
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# and any time a zone file is added/changed/removed, and any time a
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# new domain name becomes in use by a mail user.
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#
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# This script will turn on DNS for $PUBLIC_HOSTNAME.
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source scripts/functions.sh # load our functions
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# Install nsd, our DNS server software.
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# ...but first, we have to create the user because the
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# current Ubuntu forgets to do so in the .deb
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# see issue #25 and https://bugs.launchpad.net/ubuntu/+source/nsd/+bug/1311886
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if id nsd > /dev/null 2>&1; then
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true; #echo "nsd user exists... good";
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else
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useradd nsd;
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fi
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# Okay now install the package.
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# bc is needed by dns_update.
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apt_install nsd bc
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# Prepare nsd's configuration.
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sudo mkdir -p /var/run/nsd
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mkdir -p "$STORAGE_ROOT/dns";
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# Create the default zone if it doesn't exist.
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if [ ! -f "$STORAGE_ROOT/dns/$PUBLIC_HOSTNAME.txt" ]; then
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# can be an empty file, defaults are applied elsewhere
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cat > "$STORAGE_ROOT/dns/$PUBLIC_HOSTNAME.txt" << EOF;
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EOF
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fi
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# Let the storage user own all DNS configuration files.
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chown -R $STORAGE_USER.$STORAGE_USER $STORAGE_ROOT/dns
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# Permit DNS queries on TCP/UDP in the firewall.
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ufw_allow domain
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