Build unbound from source on redhat/centos

NOTE: unbound is now available via epel repo on Amazon Linux

1. install requirements
1. yum groupinstall "Development Tools"
2. yum install openssl-devel
3. yum install expat-devel
2. build
1. ldns
1. wget http://www.nlnetlabs.nl/downloads/ldns/ldns-1.6.16.tar.gz
2. tar zxvf ldns-1.6.16.tar.gz
3. cd ldns-1.6.16/
4. ./configure --disable-gost --disable-ecdsa
5. make
6. make install
2. unbound
1. wget http://unbound.net/downloads/unbound-latest.tar.gz
2. tar zxvf unbound-latest.tar.gz
3. cd unbound-1.4.20/
4. ./configure --disable-gost --disable-ecdsa
5. make
6. make install
3. add libs to system lib path
1. vi /etc/ld.so.conf.d/ldnsandunbound.conf
1. add this one line
1. /usr/local/lib
2. sudo ldconfig
4. add unbound user
1. adduser --system unbound
5. tweak config
1. vi /usr/local/etc/unbound/unbound.conf
1. see simple sample below
6. run
1. unbound
7. check
1. lsof -nP -i :53
8. stop
1. pkill unbound
9. restart
1. unbound

server:

        verbosity: 1

        interface: 0.0.0.0

        access-control: 10.0.0.0/16 allow

forward-zone:

       name: "my-vpc.internal"

       forward-addr: 252.252.199.199

       forward-first: no

Taken: https://calomel.org/unbound_dns.html