AIOps 21.3.1 DX Platform Installer ignores the use of a different NFS mount for Postgres

Products

• DX Operational Intelligence

Issue/Introduction

We are planning to different NFS point for Postgres:

/nfs/ca/dxi_postgres  => Postgres DB only

/nfs/ca/dxi = All other datasources (Elastic, Kafka, NAS, TAS, etc)

During installation we entered the different mount points, for example:

Enter your choice: 2

Specify the Name of NFS Server IP/Host [10.109.32.37]:

Specify the NFS Folder [/nfs/ca/dxi]:

For the medium installation fill in the next values for multiple NFS mounts.

Specify the Name of NFS ES 1 Server IP/Host [10.109.32.37]:

Specify the NFS ES 1 Folder [/nfs/ca/dxi]:

..

Specify the NFS DataStore 1 Folder [/nfs/ca/dxi]:

Specify the Name of NFS Postgres 1 Server IP/Host [10.109.32.37]:

Specify the NFS Postgres 1 Folder [/nfs/ca/dxi]: /nfs/ca/dxi_postgres

 

Installation completes successfully and  PVs are created successfully as below:

 

root@munqa001493 pg-data]# kubectl get pv

NAME                                CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                 STORAGECLASS            REASON   AGE

dxi                                 2Ti        RWX            Retain           Bound    dxi/dxi                               apmservices                      50m

dxi-backup                          10Gi       RWX            Retain           Bound    dxi/dxi-backup                        apmservices-backup               50m

dxi-jarvis-es-hot-1                 2Ti        RWX            Retain           Bound    dxi/dxi-jarvis-es-hot-1               jarvis                           48m

dxi-jarvis-es-hot-2                 2Ti        RWX            Retain           Bound    dxi/dxi-jarvis-es-hot-2               jarvis                           48m

dxi-jarvis-es-hot-3                 2Ti        RWX            Retain           Bound    dxi/dxi-jarvis-es-hot-3               jarvis                           48m

dxi-jarvis-kafka-1                  100Gi      RWX            Retain           Bound    dxi/dxi-jarvis-kafka-1                jarvis                           48m

dxi-jarvis-kafka-2                  100Gi      RWX            Retain           Bound    dxi/dxi-jarvis-kafka-2                jarvis                           48m

dxi-jarvis-kafka-3                  100Gi      RWX            Retain           Bound    dxi/dxi-jarvis-kafka-3                jarvis                           48m

pv.dxi-axaservices-amq-data         1Gi        RWO            Retain           Bound    dxi/amq-data-claim                    axaservices                      43m

pv.dxi-axaservices-pg-data          1Gi        RWO            Retain           Bound    dxi/pg-data-claim                     axaservices                      43m

pv.dxi-jarvis-kafka-1-logs-pv       1Gi        RWO            Retain           Bound    dxi/pvc.dxi-jarvis-kafka-1-logs       jarvis-kafka-logs                47m

pv.dxi-jarvis-kafka-2-logs-pv       1Gi        RWO            Retain           Bound    dxi/pvc.dxi-jarvis-kafka-2-logs       jarvis-kafka-logs                47m

pv.dxi-jarvis-kafka-3-logs-pv       1Gi        RWO            Retain           Bound    dxi/pvc.dxi-jarvis-kafka-3-logs       jarvis-kafka-logs                47m

pv.dxi-jarvis-zookeeper-1-logs-pv   1Gi        RWO            Retain           Bound    dxi/pvc.dxi-jarvis-zookeeper-1-logs   jarvis-zookeeper-logs            48m

pv.dxi-jarvis-zookeeper-2-logs-pv   1Gi        RWO            Retain           Bound    dxi/pvc.dxi-jarvis-zookeeper-2-logs   jarvis-zookeeper-logs            48m

pv.dxi-jarvis-zookeeper-3-logs-pv   1Gi        RWO            Retain           Bound    dxi/pvc.dxi-jarvis-zookeeper-3-logs   jarvis-zookeeper-logs            48m

 

however, when checking details of pv.dxi-axaservices-pg-data, pg-pdata/postgres is using the incorrect NFS mount point

 

[root@munqa001493 pg-data]# kubectl describe pv pv.dxi-axaservices-pg-data -ndxi

Name:            pv.dxi-axaservices-pg-data

Labels:          dxiPVName=pv.dxi-axaservices-pg-data

Annotations:     pv.kubernetes.io/bound-by-controller: yes

Finalizers:      [kubernetes.io/pv-protection]

StorageClass:    axaservices

Status:          Bound

Claim:           dxi/pg-data-claim

Reclaim Policy:  Retain

Access Modes:    RWO

VolumeMode:      Filesystem

Capacity:        1Gi

Node Affinity:   <none>

Message:

Source:

    Type:      NFS (an NFS mount that lasts the lifetime of a pod)

    Server:    10.109.32.37

    Path:      /nfs/ca/dxi/axaservices/pg-data

    ReadOnly:  false

Events:        <none>

 

Environment

DX Platform Installer 21.3.1

Cause

The problem is related to defect DE528894

Resolution

Solution:

None. To be fixed in next release

Workaround:

Manually create the PVs are describe in Techdocs

https://techdocs.broadcom.com/us/en/ca-enterprise-software/it-operations-management/dx-platform-on-premise/21-3/installing/Installation-Scenarios-2131/Install-as-a-Cluster-Reader/Kubernetes---Pre-installation-Tasks-Cluster-Reader.html#concept.dita_12c36779-2050-4df9-b2cf-3986fe434b39_CreateaPV

Additional Information

https://knowledge.broadcom.com/external/article/190815/aiops-troubleshooting-common-issues-and.html#mcetoc_1fp6nrcl8i