Private DNS
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The document discusses setting up a private DNS server using Bind9 to separate development, testing, and production environments for domains like dev.company.com and prd.company.com. It notes that maintaining DNS resolution tables can be difficult. The Hoster tool is introduced as a way to more easily manage DNS records across different environments in a git-based and reusable way.
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Private DNS
- 1. privateDNS how to find things in the caos 1 @iuriandreazza /iuri.andreazza
- 2. Base Structure • DNS Server • Bind9 (*nix servers) • Enviroment Separation • dev.pense(imoveis|carros).com.br • hlg.pense(imoveis|carros).com.br • prd.pense(imoveis|carros).com.br • It’s needed someone to maintain the resolution tables from the DNS Server
- 3. Applying • VM DNS Server • Networking layout • Need to change DNS Server with dev,testers and analysts machines • Can test resolution names inside the network • Fixed inside a network specific • The project cannot be moved easily
- 4. DNS Server • It’s a dificult job to start and maintain • Bind9 it’s great to work • A little bit difficult to configure inside a network • it’s needed to apply at root Domain Controllers • Dificult inside an already deployed structure • Need to configure root master and work as slave
- 5. DNS Server ➜ bind tail -f named.conf zone "penseimoveis.com" { type master; file "/etc/bind/db.penseimoveis.com"; allow-transfers {slaves}; }; zone "penseicarros.com" { type master; file “/etc/bind/db.pensecarros.com"; allow-transfers {slaves}; }; ➜ bind9 start ; penseimoveis.com.br $TTL 604800 @ IN SOA ns1.penseimoveis.com.br. root.penseimoveis.com.br. ( 2006020201 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800); Negative Cache TTL ; @ IN A 10.0.0.1 www IN A 11.240.68.82 dev IN A 127.0.0.1 hlg IN A 11.243.4.72 prd IN A 11.240.68.82 ; pensecarros.com.br $TTL 604800 @ IN SOA ns1.pensecarros.com.br. root.pensecarros.com.br. ( 2006020201 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800); Negative Cache TTL ; @ IN A 11.0.0.1 www IN A 11.240.68.82 dev IN A 127.0.0.1 hlg IN A 11.243.4.72 prd IN A 11.240.68.82
- 7. Dev-ops in operation! • There’s need to work with DNS Server? • Deploy Cycle, all the server need to know the DNS Servers • The project configuration can be re-deployable? • It has structure dependency! • If you need to change project from network you loose all the routes • We need a change to allow the redistribution of the projects. • Need to think more distributed…
- 8. Our Needs • Need to redistribute the server structure easily • Context aware deployment project • Git inspired • Project • https://github.com/iuriandreazza/hoster • OpenSource • Creator: @heliomedeiros • Currently has: 3 forks, made with shell scripts and going to ruby to perform better
- 9. Our Needs
- 10. Why Hoster?
- 11. Our Needs
- 12. Hoster usage ➜ brew install hoster Install Hoster … ➜ hoster git:(master) ✗ hoster usage: hoster [--help] [--version] <command> [<args>] The most commonly used hoster commands are add Add a new HOST to current repository into a specific environment. edit Open the host file defined to be used. init Create an empty host repository in the current folder. list List all hosts for a specific project. ➜ hoster git:(master) hoster add 127.0.0.1 local.penseimoveis.com.br --local✗ ➜ hoster git:(master) hoster add 127.0.0.1 local.pensecarros.com.br --local✗ ➜ hoster git:(master) hoster add 127.0.0.1 local.m.pensecarros.com.br --local✗ ➜ hoster git:(master) hoster add 127.0.0.1 local.m.penseimoveis.com.br --local✗ ➜ hoster git:(master) hoster add 10.243.4.72 hlg.penseimoveis.com.br --hlg✗ ➜ hoster git:(master) hoster add 10.243.4.72 hlg.pensecarros.com.br --hlg✗ ➜ hoster git:(master) hoster add 10.240.68.82 prd.pensecarros.com.br --prd✗ ➜ hoster git:(master) hoster add 10.240.68.82 prd.penseimoveis.com.br --prd✗ ➜ produto hoster list ################### lcl ################### 127.0.0.1 local.penseimoveis.com.br 127.0.0.1 local.pensecarros.com.br 127.0.0.1 local.m.pensecarros.com.br 127.0.0.1 local.m.penseimoveis.com.br ################### dev ################### ################### hlg ################### 10.243.4.72 hlg.penseimoveis.com.br 10.240.68.82 hlg.pensecarros.com.br ################### prod ################### 10.240.68.82 prd.pensecarros.com.br 10.240.68.82 prd.penseimoveis.com.br ➜ produto hoster apply --dev
- 14. privateDNS how to find things in the caos 14 @iuriandreazza /iuri.andreazza