Hey, This is an offtopic question. We’re packaging and distributing a web application and we feel the need to change the deb/rpm deployment to container way in order to control dependency versions (like a newer Python version on older distros). I’ve looked around LXC/LXD and sounds tempting for old way of developing application with state stored inside the container. But we also need to deploy to RHEL/CentOS and both LXC and LXD packages state looks deplorable. And doesn’t look like LXD, nor LXC has a future in RHEL world. I’ve sort of resisted Docker due to various design or security issues it had along the years, but also due the the stateless containers paradigm shift that we, old schoolers, need to embrace. Is Docker now a reliable platform for small and large production deployments where app uptime is really important? And what would be some best practices for packaging and distributing apps with Docker? Since Discourse is exclusively deployed on Docker and I’m sure it has large deployments seems like the best place to ask this question. Thank you

We are running hundreds of servers over tens of datacenters in both bare metal and cloud, and every part of the Discourse app is ran on Docker containers. Docker does have it’s fair share of bugs, but for us the benefits outweigh the problems. Just one thing: [תמונה] waverider: state stored inside the container I don’t know exactly what you mean by this, but long term state like a database data, is usually kept in volumes that map to the host.

Are Discourse containers known to run without issues both on hosts with Ubuntu and with RHEL distros (Ubuntu 18.04/16.04 and CentOS 7/8)? Is this expected from Docker?

Most people use Ubuntu, it is the recommended OS. We manage a few on-premise deployments on CentOS 7 (by customer request) without any issues. Relevant parts of the Ansible role: - name: add docker repository (CentOS) get_url: url: "https://download.docker.com/linux/centos/docker-ce.repo" dest: '/etc/yum.repos.d/docker-ce.repo' owner: root group: root mode: 0644 when: ansible_distribution == 'CentOS' - name: install docker package: name: "{{ item }}" state: present with_items: - docker-ce - docker-ce-cli - containerd.io - name: ensure docker is started and enabled at boot service: name: docker state: started enabled: yes

[תמונה] waverider: Are Discourse containers known to run without issues both on hosts with Ubuntu and with RHEL distros (Ubuntu 18.04/16.04 and CentOS 7/8)? We run all our infrastructure on Debian. No RHEL anywhere.

Is Docker generally solid enough for production deployment?

מפתח

Falco (Falco) 5 במרץ,‏ 2020,‏ 6:52pm 5

We run all our infrastructure on Debian. No RHEL anywhere.

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Support official Docker packages on Red Hat/CentOS Feature	4	2280	22 במרץ,‏ 2018
Why does Discourse have to use Docker? Self-hosting docker	34	10984	29 באפריל,‏ 2015
Install Discourse on internal RHEL server Self-hosting	18	5022	8 במאי,‏ 2014
Which Linux distro for production server? Self-hosting hosting	9	7185	28 ביולי,‏ 2015
Why Docker? Self-hosting	12	1054	11 במרץ,‏ 2024

Is Docker generally solid enough for production deployment?

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