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MBS

MBS is deployed in centos stream by the following components:

  • Ansible Fedmsg Role
  • Ansible MBS Role

Note: MBS depends on Fedmsg as a bridge to fedora-messaging.

Ansible Fedmsg Role

Repository: https://github.com/CentOS/ansible-role-fedmsg

Dependencies

None

Description

This role installs fedmsg in a host with zeromq enabled.

We need zeromq enabled since that's what is used to bridge fedmsg to fedora-messaging.

It is currently deployed in the same host used by MBS.

Ansible MBS Role

Repository: https://github.com/CentOS/ansible-role-mbs

Dependencies

Description

This role installs both mbs-frontend and mbs-backend.

Including the role without specifying a task file will install everything in the same host but you can select to install either one by including a specific task file: https://github.com/CentOS/ansible-role-mbs/tree/staging/tasks - keep in mind you may also need to select system.yml if doing so.

MBS Frontend requirements:

  • kerberos keytabfile for httpd POST authentication (GET requests are authless).
  • HTTPD CA, certificate and key files;

MBS Backend requirements:

  • keytab file for koji authentication

Fedmsg usage:

  • Bridges fedora-messaging messages to MBS;
  • communication between mbs-frontend to mbs-backend;
  • listen to messages sent by fedora-messaging;
  • koji updates will be sent to fedora-messaging which will be consumed by a mbs consumer and trigger workers accordingly.

You can see messages sent to fedmsg by running fedmsg-tail or fedmsg-tail --include org.centos.prod.buildsys.