Created
June 25, 2014 20:35
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Dynamic haproxy using chef based on unprivileged containers (exposing containers port 80)
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template '/etc/haproxy/haproxy.cfg' do | |
extend Helper | |
variables( | |
containers: container_ips('goatos'), | |
start_port: 8000 | |
) | |
source 'haproxy.cfg.erb' | |
end |
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global | |
log /dev/log local0 | |
log /dev/log local1 notice | |
chroot /var/lib/haproxy | |
user haproxy | |
group haproxy | |
daemon | |
defaults | |
log global | |
option dontlognull | |
contimeout 5000 | |
clitimeout 50000 | |
srvtimeout 50000 | |
<% @containers.each |name, ip|%> | |
listen <%=name.upcase %> :<%= (@start_port+=1) %> | |
mode http | |
server <%= name %> <%= ip %>:<%= 80 %> | |
<% end %> |
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module Helper | |
def container_ips | |
data = {} | |
user = Etc.getpwnam(name) | |
config = File.join(user.dir, '.local/share/lxc') # this can be injected from outside as well | |
LXC.list_containers(config_path: config).each do |n| | |
ct = LXC::Container.new(n, config) | |
if ct.running? and (not ct.ip_addresses.empty?) | |
data[ct.name] = ct.ip_addresses.first | |
end | |
end | |
data | |
end | |
end |
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