How to Restart PMK Stack?

Problem

Restart PMK stack during the discrepancies occurred related to the PMK stack.

PMK (Platform9 Managed Kubernetes) Stack basically refers to the nodelet phases running on the node.

Environment

Platform9 Managed Kubernetes - v5.3 and Higher.

Procedure

Steps to be followed to restart PMK stack in the required node:

Stop pf9-hostagent and pf9-nodeletd services:

In the affected node
    
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sudo systemctl stop pf9-hostagent pf9-nodeletd
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Stop nodeletd phase:

In the affected node
    
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# sudo /opt/pf9/nodelet/nodeletd phases stop --force# sudo /opt/pf9/nodelet/nodeletd phases status  INDEX NUMBER  FILE                                         NAME     PHASE STATUS  1             Generate certs / Send signing request to CA  stopped  2             Prepare configuration                        stopped  3             Configure Container Runtime                  stopped  4             Start Container Runtime                      stopped  5             Configure etcd                               stopped  6             Start etcd                                   stopped  7             Network configuration                        stopped  8             Configure CNI plugin                         stopped  9             Configure and start pf9-bouncer              stopped  10            Miscellaneous scripts and checks             stopped  11            Configure and start kubelet                  stopped  12            Configure and start kube-proxy               stopped  13            Wait for k8s services and network to be up   stopped  14            Apply and validate node taints               stopped  15            Apply dynamic kubelet configuration          stopped  16            Uncordon node                                stopped  17            Deploy app catalog                           stopped  18            Configure and start Keepalived               stopped  19            Configure and start pf9-addon-operator       stopped  20            Drain all pods (stop only operation)         stopped  21            Configure and start monitoring               stopped
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Start nodeletd phase:

In the affected node
    
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# /opt/pf9/nodelet/nodeletd phases start --verboseINDEX NUMBER  FILE                                         NAME     PHASE STATUS  1             Generate certs / Send signing request to CA  running  2             Prepare configuration                        running  3             Configure Container Runtime                  running  4             Start Container Runtime                      running  5             Configure etcd                               running  6             Start etcd                                   running  7             Network configuration                        running  8             Configure CNI plugin                         running  9             Configure and start pf9-bouncer              running  10            Miscellaneous scripts and checks             running  11            Configure and start kubelet                  running  12            Configure and start kube-proxy               running  13            Wait for k8s services and network to be up   running  14            Apply and validate node taints               running  15            Apply dynamic kubelet configuration          running  16            Uncordon node                                running  17            Deploy app catalog                           running  18            Configure and start Keepalived               running  19            Configure and start pf9-addon-operator       running  20            Drain all pods (stop only operation)         running  21            Configure and start monitoring               running
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Start pf9-hostagent and ps9-nodeleted service.

In the affected node
    
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# sudo systemctl start pf9-hostagent pf9-nodeletd
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Additional Information

Starting the pf9-hostagent service will start the PMK stack which is already stopped.
The nodeletd phases logs are also available at /var/log/pf9/nodeletd.log file on the node.

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