lsb_release Utility Missing Resulting in Node to be in a Failed State

Problem

Node is seen to be in a failed state from the management plane perspective.

None

abcdefgh-910f-080d-b36b-sf70929bacbc |  test.platform9.net  |  cni0:10.50.92.1 | True | failed  |  pf9-kube |

On the node, the pf9-nodeletd service is in a dead state.

None

pf9@test:/var/log/pf9$ systemctl status pf9-nodeletd* pf9-nodeletd.service - Platform9 Kubernetes Management Agent Service  Loaded: loaded (/lib/systemd/system/pf9-nodeletd.service; disabled; vendor preset: enabled)  Active: failed (Result: exit-code) since Thu 2020-12-24 05:16:29 PST; 5 days ago  Process: 32556 ExecStart=/bin/bash -c /opt/pf9/nodelet/nodeletd >> /var/log/pf9/nodelet.log 2>&1 (code=exited, status=2) Main PID: 32556 (code=exited, status=2)

Environment

• Platform9 Managed Kubernetes - All Versions

Cause

Based on the Kube logs from when the service was last active, we can observe that it was failing to run the PMK stack scripts as it could not find the lsb_release utility.

None

pf9@test:/var/log/pf9/kube$ less kube.logs[2020-12-22 11:52:16] os_ubuntu.sh: line 3: lsb_release: command not found--- /opt/pf9/pf9-kube/worker_scripts/020-gen_certs.sh start at 2020-12-22 11:52:16 ---[2020-12-22 11:52:16] os_ubuntu.sh: line 3: lsb_release: command not found--- status at 2020-12-22 12:01:24 ---[2020-12-22 12:01:24] os_ubuntu.sh: line 3: lsb_release: command not found--- status at 2020-12-22 19:02:57 ---

None

pf9@test:~$ which lsb_release
pf9@test:~$

Resolution

1. Install the missing utility.

None

pf9@test:~$ sudo apt-get install lsb-core

None

pf9@test:~$ which lsb_release
/usr/bin/lsb_release

1. Restart the pf9-hostagent service.

None

pf9@test:~$ sudo systemctl restart pf9-hostagent

1. Post restart of the pf9-hostagent service, the pf9-nodeletd service should start back up along with the rest of the PMK stack, and the node will then be reported to be in a healthy state to the management plane.

None

abcdefgh-910f-080d-b36b-sf70929bacbc | test.platform9.net | cni0:10.50.92.1 | True | ok | pf9-kube |