Execute Docker Compose with the following command:
docker-compose up --buildAfter that, an error will be raised if you try to add a puppet agent:
puppet-agent_1 | Error: Could not request certificate: Failed to open TCP connection to puppet:8140 (Host is unreachable - connect(2) for "puppet" port 8140)
BTW, even with this error, it's possible to acces the Puppet Board on the following link: http://127.0.0.1:80/
To fix the problem, we need to execute the following steps:
Access puppet-server container and check if the hostname is defined as puppet.
ricardo@ricardo-lohmann:~/Projects/puppet (master) $ docker-compose exec puppet-server /bin/bash
root@puppet:/# hostname
puppetModify the hosts' file(/puppet/etc/hosts) to add puppet agents.
root@puppet:/# vi /etc/hosts
root@puppet:/# cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.23.0.3 puppet
172.23.0.4 puppet-agentAfter that, it's possible to add a new puppet agent to the network
docker run --net puppet_default puppet/puppet-agent-alpine