Retire the Slurm ELK logging playbook

docs/misc/firewall.md

@@ -51,7 +51,6 @@ Pre-configured NodePorts for [DeepOps default service specs](/services) include:
 - `tcp/30500`: Prometheus
 - `tcp/30400`: AlertManager
 - `tcp/30200`: Grafana
-- `tcp/30700`: Kibana
 - `tcp/30000`: Apt mirror
 
 If a service is not listed here, it will use a random port from the range.

docs/misc/syslog.md

@@ -10,7 +10,7 @@ Centralized logging with syslog
 
 Both the Slurm and Kubernetes cluster playbooks include a minimal implementation of centralized cluster logging using rsyslog.
 
-Rsyslog was selected for the minimal cluster logging implementation in order to provide a light-weight solution using software already installed on the nodes. This ensures that logs are recorded in one place, making it easier to debug node-specific issues even in the case where the nodes are down or non-responsive. However, for a more full-featured logging solution with search and visualization capabilities, we recommend deploying the [ELK stack](../k8s-cluster/logging.md) or other log solution.
+Rsyslog was selected for the minimal cluster logging implementation in order to provide a light-weight solution using software already installed on the nodes. This ensures that logs are recorded in one place, making it easier to debug node-specific issues even in the case where the nodes are down or non-responsive. However, for a more full-featured logging solution with search and visualization capabilities, consider a site-managed log stack; for Kubernetes clusters, see the Helm-based procedure in [logging](../k8s-cluster/logging.md).
 
 In the syslog-based implementation, the first cluster management node is selected as a syslog server and listens on `rsyslog_client_tcp_port` for connections. The remaining nodes in the cluster then forward their logs to the selected syslog server. Log files for remote nodes are stored on the syslog server in node-specific files under `/var/log/deepops-hosts`.
 

roles/requirements.yml

@@ -30,6 +30,10 @@ roles:
 - src: nvidia.enroot
   version: "v0.5.0"
 
+- src: https://github.com/mrlesmithjr/ansible-maas.git
+  name: ansible-maas
+  version: '178a999c9bfc979ef32c42f4f59c034664df10d0'
+
 - src: geerlingguy.filebeat
   version: "3.5.0"
 
@@ -48,6 +52,9 @@ roles:
 - src: robertdebock.kibana
   version: "1.2.6"
 
+- src: https://github.com/DeepOps/ansible-role-chrony
+  name: DeepOps.chrony
+  version: 'c9022153036dfdde4e2b313aecde4a46cd6f6687'
 
 - src: https://github.com/OSC/ood-ansible.git
   version: 'v3.0.3'