NetBackup™ Deployment Guide for Azure Kubernetes Services (AKS) Cluster

Last Published:
Product(s): NetBackup (10.0)
  1. Introduction to NetBackup on AKS
    1.  
      About NetBackup deployment on Azure Kubernetes Services (AKS) cluster
    2.  
      Required terminology
    3.  
      User roles and permissions
    4.  
      About MSDP Scaleout
    5.  
      About MSDP Scaleout components
    6.  
      Limitations in MSDP Scaleout
  2. Deployment with environment operators
    1. About deployment with the environment operator
      1.  
        Prerequisites
      2.  
        Contents of the TAR file
      3.  
        Known limitations
    2.  
      Deploying using the deploy.sh file
    3.  
      Deploying the operators manually
    4.  
      Deploying NetBackup and MSDP Scaleout manually
    5.  
      Configuring the environment.yaml file
    6.  
      Uninstalling NetBackup environment and the operators
    7.  
      Applying security patches
  3. Assessing cluster configuration before deployment
    1.  
      How does the Config-Checker utility work
    2.  
      Config-Checker execution and status details
  4. Deploying NetBackup
    1.  
      Preparing the environment for NetBackup installation on AKS
    2.  
      Recommendations of NetBackup deployment on AKS
    3.  
      Limitations of NetBackup deployment on AKS
    4. About primary server CR and media server CR
      1.  
        After Installing primary server CR
      2.  
        After Installing the media server CR
    5.  
      Monitoring the status of the CRs
    6.  
      Updating the CRs
    7.  
      Deleting the CRs
    8.  
      Configuring NetBackup IT Analytics for NetBackup deployment
    9.  
      Managing NetBackup deployment using VxUpdate
    10.  
      Migrating the node pool for primary or media servers
  5. Deploying MSDP Scaleout
    1.  
      Deploying MSDP Scaleout
    2.  
      Prerequisites
    3.  
      Installing the docker images and binaries
    4.  
      Initializing the MSDP operator
    5.  
      Configuring MSDP Scaleout
    6.  
      Using MSDP Scaleout as a single storage pool in NetBackup
    7.  
      Configuring the MSDP cloud in MSDP Scaleout
  6. Monitoring NetBackup
    1.  
      Monitoring the application health
    2.  
      Telemetry reporting
    3.  
      About NetBackup operator logs
    4.  
      Expanding storage volumes
    5.  
      Allocating static PV for Primary and Media pods
  7. Monitoring MSDP Scaleout
    1.  
      About MSDP Scaleout status and events
    2.  
      Monitoring with Azure Container insights
    3.  
      The Kubernetes resources for MSDP Scaleout and MSDP operator
  8. Managing the Load Balancer service
    1.  
      About the Load Balancer service
    2.  
      Notes for Load Balancer service
    3.  
      Opening the ports from the Load Balancer service
  9. Performing catalog backup and recovery
    1.  
      Backing up a catalog
    2.  
      Restoring a catalog
  10. Managing MSDP Scaleout
    1.  
      Adding MSDP engines
    2.  
      Adding data volumes
    3. Expanding existing data or catalog volumes
      1.  
        Manual storage expansion
    4.  
      MSDP Scaleout scaling recommendations
    5. MSDP Cloud backup and disaster recovery
      1.  
        About the reserved storage space
      2.  
        Cloud LSU disaster recovery
    6.  
      MSDP multi-domain support
    7.  
      Configuring Auto Image Replication
    8. About MSDP Scaleout logging and troubleshooting
      1.  
        Collecting the logs and the inspection information
  11. About MSDP Scaleout maintenance
    1.  
      Pausing the MSDP Scaleout operator for maintenance
    2.  
      Logging in to the pods
    3.  
      Reinstalling MSDP Scaleout operator
    4.  
      Migrating the MSDP Scaleout to another node pool
  12. Uninstalling MSDP Scaleout from AKS
    1.  
      Cleaning up MSDP Scaleout
    2.  
      Cleaning up the MSDP Scaleout operator
  13. Troubleshooting
    1.  
      View the list of operator resources
    2.  
      View the list of product resources
    3.  
      View operator logs
    4.  
      View primary logs
    5.  
      Pod restart failure due to liveness probe time-out
    6.  
      Socket connection failure
    7.  
      Resolving an invalid license key issue
    8.  
      Resolving an issue where external IP address is not assigned to a NetBackup server's load balancer services
    9.  
      Resolving the issue where the NetBackup server pod is not scheduled for long time
    10.  
      Resolving an issue where the Storage class does not exist
    11.  
      Resolving an issue where the primary server or media server deployment does not proceed
    12.  
      Resolving an issue of failed probes
    13.  
      Resolving token issues
    14.  
      Resolving an issue related to insufficient storage
    15.  
      Resolving an issue related to invalid nodepool
    16.  
      Resolving a token expiry issue
    17.  
      Resolve an issue related to inconsistency in file ownership
    18.  
      Resolve an issue related to KMS database
    19.  
      Resolve an issue related to pulling an image from the container registry
    20.  
      Resolving an issue related to recovery of data
    21.  
      Check primary server status
    22.  
      Pod status field shows as pending
    23.  
      Ensure that the container is running the patched image
    24.  
      Getting EEB information from an image, a running container, or persistent data
  14. Appendix A. CR template
    1.  
      Secret
    2.  
      MSDP Scaleout CR

Socket connection failure

Socket connection failure can happen because of the following reasons:

  • Long processing delays

  • Azure connection reset (default 4 minutes)

  • Load on CPU or Memory pressure

  • IO saturation and throttling under load

If there are problems with the TCP stacks on the hosts, network between the hosts, or unusual long processing delays, then the connection may drop and the TCP stack on the host is unaware of the situation.

The following error is displayed in the web UI under job details:

db_FLISTsend failed: unexpected message received (43)
 *** - Error bptm (pid=14599) get_string() failed, 
Connection reset by peer (104), network read error
*** - Info bptm (pid=14599) EXITING with status 42 <----------
*** - Info nbux-systest-media-1 (pid=14599) 
StorageServer=PureDisk:nbux-systest-media-1; 
Report=PDDO Stats for (nbux-systest-media-1): 
scanned: 4195521 KB, CR sent: 171002 KB, CR sent over FC: 0 KB, 
dedup: 95.9%, cache disabled, where dedup space saving:6.6%, 
compression space saving:89.3%
*** - Info bpbkar (pid=19109) done. status: 42: network read failed

To resolve this issue, update the sysctl.conf values for NetBackup servers deployed on the AKS cluster.

NetBackup image sets following values in sysctl.conf during AKS deployment:

  • net.ipv4.tcp_keepalive_time = 180

  • net.ipv4.tcp_keepalive_intvl = 10

  • net.ipv4.tcp_keepalive_probes = 20

  • net.ipv4.ip_local_port_range = 14000 65535

These settings are persisted at the location /mnt/nbdata/etc/sysctl.conf.

There are two ways to modify these values:

  • Modify the value in both /etc/sysctl.conf and /mnt/nbdata/etc/sysctl.conf and run the sysctl -p command to load the modified values.

  • Modify the values in /mnt/nbdata/etc/sysctl.conf and restart the pod. The new values are reflected after the pod restart.

If external media servers are used, perform the steps in the following order:

  1. Add the following in /usr/openv/netbackup/bp.conf:

    HOST_HAS_NAT_ENDPOINTS = YES

  2. Add the following sysctl configuration values in etc/sysctl.conf on external media servers to avoid any socket connection issues:

    • net.ipv4.tcp_keepalive_time = 180

    • net.ipv4.tcp_keepalive_intvl = 10

    • net.ipv4.tcp_keepalive_probes = 20

    • net.ipv4.ip_local_port_range = 14000 65535

    • net.core.somaxconn = 4096

  3. Save the setting using the sysctl -p command.