Instant DevOps talk at Free Software Conference of Szeged, 2013-11-29

1. Instant DevOps

2. advancing technology

3. growing business challenges

4. agile development model

6. source code
+ application data
+ bare metal
——————————————————————
infrastructure as code

7. We need new tools!

10. $ curl -L get.rexify.org | perl - --sudo -n Rex
$ cpanm Rex

11. Hardware File Package
Template FS SCM
Transaction Cron Service
Cache Host User
Reports LVM Virtualization
Inventory kmod Box
Partition Network Cloud

12. make -> Makefile
rex -> Rexfile

13. user "ubuntu";
password "ubuntu";
pass_auth;

14. user "ubuntu";
private_key "~/.ssh/id_rsa";
public_key "~/.ssh/id_rsa.pub";
key_auth;

15. user "ubuntu";
password "ubuntu";
pass_auth;
sudo -on;
sudo_password "ubuntu";

16. user "ubuntu";
password "ubuntu";
pass_auth;
sudo -on;
sudo_password "ubuntu";
group servers => "web1", "web2", "web3";

17. user "ubuntu";
password "ubuntu";
pass_auth;
sudo -on;
sudo_password "ubuntu";
group servers => "web[1..3]";

18. user "ubuntu";
password "ubuntu";
pass_auth;
sudo -on;
sudo_password "ubuntu";
group servers => "web[1..3]", "lb[1..2]",
"db[01..02]", "mail";

19. user "ubuntu";
password "ubuntu";
pass_auth;
sudo -on;
sudo_password "ubuntu";
group servers => "web[1..3]", "lb[1..2]",
"db[01..02]", "mail";
task "uptime", group => "servers", sub {
say run "uptime";
};

20. task "upgrade", group => "servers", sub {
update_package_db;
update_system;
};

21. task "setup_ntp", group => "servers", sub {
install "ntp";
};

22. task "setup_ntp", group => "servers", sub {
install "ntp";
service ntp => ensure => "started";
};

23. task "setup_ntp", group => "servers", sub {
install "ntp";
file "/etc/ntp.conf",
source => "files/etc/ntp.conf";
service ntp => ensure => "started";
};

24. task "setup_ntp", group => "servers", sub {
install "ntp";
file "/etc/ntp.conf",
source => "files/etc/ntp.conf",
owner => "root",
group => "root",
mode => 644;
service ntp => ensure => "started";
};

25. task "setup_ntp", group => "servers", sub {
install "ntp";
file "/etc/ntp.conf",
source => "files/etc/ntp.conf",
owner => "root",
group => "root",
mode => 644,
on_change => sub {
service ntp => "restart"
};
service ntp => ensure => "started";
};