Managed nodes for Ansible labs, and the EX294 3.1 lab #6

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jcoffey-dev merged 1 commits from lib/managed-nodes into main

2026-10-31 03:31:31 +00:00

jcoffey-dev commented

2026-10-31 03:31:29 +00:00

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Managed nodes for the EX294 (Ansible) labs.

nodes_up N in setup.sh creates node1 to nodeN, up to 9. Each node is a podman container running AlmaLinux 10, with systemd, sshd, cron and dnf. They sit at 10.99.1.11 and up, with their names in /etc/hosts.
Helpers: in_node [-i] NAME CMD, nodes_names, node_addr and nodes_wait.
The containers are kept, so a student's work survives a VM reboot. le-lab-nodes.service starts them again at boot.
Reset runs nodes_down. It removes the containers, the network, the unit, the images and the hosts lines, and removes podman too if setup installed it.
docs/writing-labs.md has a new "Managed nodes" section. It says what works in a node and what doesn't (SELinux, storage, chronyd, the reboot module, host names), and tells authors to give those tasks to the control node.
First lab: EX294 3.1 "Preparing managed nodes". It passes on AlmaLinux with and without firewalld. LFCS 2.4 also still passes with the new reset step.

Managed nodes for the EX294 (Ansible) labs. - `nodes_up N` in setup.sh creates `node1` to `nodeN`, up to 9. Each node is a podman container running AlmaLinux 10, with systemd, sshd, cron and dnf. They sit at `10.99.1.11` and up, with their names in `/etc/hosts`. - Helpers: `in_node [-i] NAME CMD`, `nodes_names`, `node_addr` and `nodes_wait`. - The containers are kept, so a student's work survives a VM reboot. `le-lab-nodes.service` starts them again at boot. - Reset runs `nodes_down`. It removes the containers, the network, the unit, the images and the hosts lines, and removes podman too if setup installed it. - `docs/writing-labs.md` has a new "Managed nodes" section. It says what works in a node and what doesn't (SELinux, storage, chronyd, the reboot module, host names), and tells authors to give those tasks to the control node. - First lab: EX294 3.1 "Preparing managed nodes". It passes on AlmaLinux with and without firewalld. LFCS 2.4 also still passes with the new reset step.

jcoffey-dev added 1 commit 2026-10-31 03:31:29 +00:00

Managed nodes for Ansible labs, and the EX294 3.1 lab e4d86deb8a

jcoffey-dev merged commit 9dbb52aa2e into main

2026-10-31 03:31:31 +00:00

jcoffey-dev deleted branch lib/managed-nodes

2026-10-31 03:31:31 +00:00

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Reference: coffey-labs/linuxexpert-practice-labs#6