SD-WAN Versa Collector Troubleshooting Guide

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About

This document provides some useful troubleshooting details for SD-WAN Versa collector.

Please do not run sevone-cli command from a subdirectory under /opt/SevOne/upgrade and /var/log/pods. It can be run from any directory except for from subdirectories under /opt/SevOne/upgrade and /var/log/pods.
Terminology usage...
 In this guide if there is,
  • [any reference to master] OR
  • [[if a CLI command (for NMS or Kubernetes or Redis) contains master] AND/OR
  •  [its output contains master]],
   it means leader or control plane.

And, if there is any reference to slave or worker, it means follower or agent.

Troubleshooting

Troubleshooting scenarios are listed in alphabetical order.

Debug SD-WAN Collector

The following are some scenarios on how you may debug an issue while deploying SD-WAN Versa Collector.

Question Description / Command(s)
Are you logged in as root or sevone user? All commands must be run as sevone user.
If you are performing a fresh deployment, have you checked that there are no IP-range conflicts. Please refer to SD-WAN Versa Collector Use-Cases Guide > Use-Cases > section Handle IP Conflicts for details on IP address ranges. for details on IP address ranges.
How can SD-WAN collector, Kubernetes, Helm, SOA, and SevOne NMS application versions be obtained?
On SD-WAN collector, execute the following commands
$ cat /SevOne.info
$ kubectl version o --short
$ helm version

On SevOne NMS appliance, execute the following command
$ docker ps | grep soa
Is the Kubernetes cluster healthy? Execute the following commands.
$ kubectl get nodes
$ kubectl get pods
$ kubectl get pods -n=kube-system
How can the application logs for a suspected pod be obtained? Example: Get logs for deploy/solutions-sdwan-versa-collector on SD-WAN 'versa' collector machine
$ kubectl logs deploy/solutions-sdwan-versa-collector --tail 100

On SevOne NMS appliance
# Using a text editor of your choice, you can find the logs in /var/log/soa.log
$ vi /var/log/soa.log
How can traces for the request be obtained if it involves retrieving data from SevOne NMS? On SevOne NMS appliance
$ supervisorctl start jaeger
<Trigger the event to happen in SD-WAN Collector>
$ /usr/local/bin/jaeger
What should you do if an issue is related to the User Interface? You must collect the console logs from your browser.
What should you do if data is not visible for the tunnel, device health, and interface queue objects?
  1. To begin, please try to gather syslogs by executing the following command.

    $ sudo tcpdump -AQ in -i any port <port-number> -w <pcap-filename>

    Where, the port number is 50001, but please verify and update it as needed.
    After running the command, wait at least 5 minutes for data to appear in the pcap file.
  2. If the logs (mentioned in SD-WAN Versa Collector Deployment / Configuration Guide > section Verification > Verify Data Appears in SevOne NMS > subsection Versa Analytics Log Exporter) are visible in the collected pcap file, but the data is still not visible on SevOne NMS, then run the following command. However, if the logs are not visible in the pcap file, please export the relevant logs from vDirector.

for single vDirector
$ sevone-cli solutions run_buildstep --deployment_name=<deployment_name>

Example
$ sevone-cli solutions run_buildstep --deployment_name=solutions-sdwan-versa

The deployment name is the name of the application specified in the directory /etc/ansible/group_vars/all.

For multi-vDirector (To delete two collector pods)
$ sevone-cli solutions run_buildstep

Helpful CLI commands

  1. After creating the virtual machine, you may want to change its name. Execute the following steps.

    $ ssh sevone@<SD-WAN Versa collector node IP address>

$ sudo hostnamectl set-hostname "<enter hostname>"

$ sudo reboot

  2. When provisioning of control plane node is complete via user interface, ensure that control plane node is correctly provisioned from CLI.

    $ ssh sevone@<SD-WAN Versa 'control plane' node IP address>

$ kubectl get nodes

NAME           STATUS   ROLES                 AGE    VERSION
sdwan-node01   Ready    control-plane,master  2m17s  v1.27.1+k3s1

  3. When the agent nodes have joined the Kubernetes cluster, execute the following command to confirm the same.

    $ ssh sevone@<SD-WAN Versa 'control plane' node IP address>

$ kubectl get nodes

NAME           STATUS   ROLES                  AGE       VERSION  
sdwan-node01   Ready    control-plane,master   2m17s     v1.27.1+k3s1
sdwan-node02   Ready    <none>                 2m17s     v1.27.1+k3s1
sdwan-node03   Ready    <none>                 2m17s     v1.27.1+k3s1

  4. To check the status of the deployment, ensure that all the pods are in Running status.

    $ kubectl get pods  

NAME                                                 READY   STATUS      RESTARTS    AGE
solutions-sdwan-versa-redis-master-0                 1/1     Running     0           3d2h
solutions-sdwan-versa-redis-replicas-0               1/1     Running     0           3d2h
solutions-sdwan-versa-upgrade-4k6vx                  0/1     Completed   0           23m
solutions-sdwan-versa-aug-decoder-5cc996c969-sw9w5   1/1     Running     0           23m
solutions-sdwan-versa-create-keys-2-tmjwr            0/1     Completed   0           23m
solutions-sdwan-versa-collector-57fdbf7d9b-kwdk9     1/1     Running     0           23m

Pod Stuck in a terminating State

If a pod is ever stuck and you want it to reboot, you can append --grace-period=0 --force to the end of your delete pod command.

Example

$ ssh sevone@<SD-WAN Versa collector 'control plane' node IP address or hostname>
  
$ kubectl delete pod $(kubectl get pods | grep 'dsm' | awk '{print $1}') --grace-period=0 --force

Redeploy / Update Configuration

If you are deploying the same build again or have updated /opt/SevOne/chartconfs/solutions-sdwan-versa_custom_guii.yaml file, the following commands must be executed.

Applies only when configuration has been updated. The helm command uninstalls the deployment along with the base configuration which by default, is available with the .ova image file.

$ sevone-cli playbook precheck
 
$ sevone-cli solutions reload
Please reinstall the collector in case the value for any of the following variables is changed.
  • collectorService
    • affinity
  • flowAugmentorService
    • augmentor service
    • receiverPort

Review / Collect Logs

Logs can be collected at the pod level. The status of pods must be Running.

In the commands below, to obtain the logs, you need to pass <resource-type/pod-name>. For example, deployment.apps/solutions-sdwan-versa-collector or deploy/solutions-sdwan-versa-collector.

By default, resource-type = pod. For logs where resource-type = pod, you may choose to only pass the pod-name only; resource-type is optional.

Using ssh, log into SD-WAN collector control plane node as sevone.

$ ssh sevone@<SD-WAN Versa collector 'control plane' node IP address or hostname>

Ensure that all pods are either Running or Completed.

Example: Get 'pod' names

$ kubectl get pods
Pod names are the names found under column NAME.

Get resource types

Get 'all' resource types

$ kubectl get all | more

Get resource type for a pod

$ kubectl get all | grep <pod-name>

Example: Get resource type for pod-name containing 'solutions-sdwan'

pod/solutions-sdwan-versa-redis-master-0                 1/1     Running     1 (20h ago)   3d19h
pod/solutions-sdwan-versa-redis-replicas-0               1/1     Running     1 (20h ago)   3d19h
pod/solutions-sdwan-versa-upgrade-4k6vx                  0/1     Completed   0             17h
pod/solutions-sdwan-versa-aug-decoder-5cc996c969-sw9w5   1/1     Running     0             17h
pod/solutions-sdwan-versa-create-keys-2-tmjwr            0/1     Completed   0             17h
pod/solutions-sdwan-versa-collector-57fdbf7d9b-kwdk9     1/1     Running     0             17h
service/solutions-sdwan-versa-redis-headless   ClusterIP      None              <none>         6379/TCP          3d19h
service/solutions-sdwan-versa-redis-replicas   ClusterIP      192.168.97.213    <none>         6379/TCP          3d19h
service/solutions-sdwan-versa-redis-master     ClusterIP      192.168.108.172   <none>         6379/TCP          3d19h
service/solutions-sdwan-versa                  LoadBalancer   192.168.106.219   10.128.10.69   50001:20824/UDP   3d19h
service/solutions-sdwan-versa-flowservice      LoadBalancer   192.168.103.198   10.128.10.69   9992:9992/UDP     17h
deployment.apps/solutions-sdwan-versa-aug-decoder   1/1     1            1           17h
deployment.apps/solutions-sdwan-versa-collector     1/1     1            1           3d19h
replicaset.apps/solutions-sdwan-versa-collector-5cff7b5ddd     0         0         0       3d19h
replicaset.apps/solutions-sdwan-versa-aug-decoder-5cc996c969   1         1         1       17h
replicaset.apps/solutions-sdwan-versa-collector-57fdbf7d9b     1         1         1       17h
statefulset.apps/solutions-sdwan-versa-redis-master     1/1     3d19h
statefulset.apps/solutions-sdwan-versa-redis-replicas   1/1     3d19h
job.batch/solutions-sdwan-versa-upgrade         1/1           19s        17h
job.batch/solutions-sdwan-versa-create-keys-2   1/1           8s         17h
pod, service, daemonset.apps, deployment.apps, replicaset.apps, statefulset.apps, etc. in the example above are resource types.

solutions-sdwan-versa in the example above is the pod name.

Get logs

$ kubectl logs <resource-type>/<pod-name>

Example: Get logs for pod-name 'solutions-sdwan-versa-collector'

$ kubectl logs deployment.apps/solutions-sdwan-versa-collector
  
OR
  
$ kubectl logs deploy/solutions-sdwan-versa-collector

Example: Get logs for pod-name 'solutions-sdwan-versa-redis-master'

$ kubectl logs statefulset.apps/solutions-sdwan-versa-redis-master
  
OR
  
$ kubectl logs sts/solutions-sdwan-versa-redis-master

Example: Get logs for pod-name 'solutions-sdwan-versa-redis-master' with timestamps

$ kubectl logs statefulset.apps/solutions-sdwan-versa-redis-master --timestamps
  
OR
  
$ kubectl logs sts/solutions-sdwan-versa-redis-master --timestamps

By default, resource-type = pod.

In the example below, to obtain the logs for <resource-type>/<pod-name> = pod/solutions-sdwan-versa-redis-master-0, pod is optional.

Example: <resource-type> = pod; <resource-type> is optional

$ kubectl logs pod/solutions-sdwan-versa-redis-master-0
  
OR
  
$ kubectl logs solutions-sdwan-versa-redis-master-0
Each pod can have one or more associated containers.

Collect Logs for a Pod with One Container

  1. Using ssh, log into SD-WAN collector control plane node as sevone.

    $ ssh sevone@<SD-WAN Versa collector 'control plane' node IP address or hostname>

  2. Obtain the list of containers that belong to a pod.

    Example

    Example: Pod name 'di-mysql-0' contains one container, 'mysql'

    $ kubectl get pods solutions-sdwan-versa-redis-master-0 -o jsonpath='{.spec.containers[*].name}{"\n"}'

redis

  3. Collect logs.

    For pods with one container only, -c <container-name> in the command below is optional. 
    $ kubectl logs <pod-name> -c <container-name>

or

$ kubectl logs <pod-name>

    Example

    $ kubectl logs solutions-sdwan-versa-redis-master-0 -c redis

or

$ kubectl logs solutions-sdwan-versa-redis-master-0

Start Collector

To start the collector, execute the following commands.

  1. Using ssh, log into SD-WAN collector control plane node as sevone.

    $ ssh sevone@<SD-WAN collector 'control plane' node IP address or hostname>

  2. Start the collector.

    $ sevone-cli solutions reload
    Scenario-1 (When no changes to collectorConfig file and secrets)
    • create-keys pods will restart to set up NMS v2 api keys and v3 api keys.
    • Collector pod will not restart.
    Scenario-2 (When no changes in secrets but changes in collectorConfig file)
    • create-keys pods will restart.
    • Only the changed collector pod will restart.
    Scenario-3 (When changes in secrets but no changes in collectorConfig file)
    • create-keys pods will restart.
    • Only the changed collector pod will restart.
    Scenario-4 (When changes in secrets and collectorConfig file)
    • create-keys pods will restart.
    • Only the changed collector pod will restart.

Stop Collector

To stop the collector, execute the following commands.

  1. Using ssh, log into SD-WAN collector control plane node as sevone.

    $ ssh sevone@<SD-WAN collector 'control plane' node IP address or hostname>

  2. Stop the collector.

    $ sevone-cli solutions stop_collector

Upgrade Collector

If you are upgrading from SD-WAN 2.9 to SD-WAN version > 2.9, execute the following step. By default, the .ova image is already running a base configuration of the collector. If the configuration is modified, the following command must be executed.

$ sevone-cli solutions reload
When upgrading the collector from a newly deployed SD-WAN 2.9 or SD-WAN 2.10 OVA to SD-WAN 6.6, perform the following steps.
  1. Extract the latest tar files provided to you by IBM SevOne Production or IBM SevOne Support in /opt/SevOne/upgrade folder.
  2. Run the following commands.
    1. $ rm -rf /opt/SevOne/upgrade/utilities
    2. $ tar xvfz $(ls -Art /opt/SevOne/upgrade/sevone_solutions_sdwan_*.tgz | tail -n 1) -C /opt/SevOne/upgrade/ ./utilities
    3. $ sudo rpm -Uvh /opt/SevOne/upgrade/utilities/sevone-cli-*.rpm
  3. Execute $ sevone-cli cluster down command.
  4. Run $ sevone-cli solutions upgrade --no_guii command. Please run $ sevone-cli solutions upgrade command when upgrading via GUI installer.

'Agent' Nodes in a Not Ready State after Rebooting

Perform the following action if the agent nodes are in a Not Ready state after rebooting.

Ensure SD-WAN collector is 100% deployed

Check the status of the deployment by running the following command. Ensure that everything is in Running status.

$ ssh sevone@<SD-WAN Versa collector 'control plane' node IP address or hostname>
  
$ kubectl get pods 
  
NAME                                                 READY   STATUS      RESTARTS    AGE
solutions-sdwan-versa-redis-master-0                 1/1     Running     0           3d2h
solutions-sdwan-versa-redis-replicas-0               1/1     Running     0           3d2h
solutions-sdwan-versa-upgrade-4k6vx                  0/1     Completed   0           23m
solutions-sdwan-versa-aug-decoder-5cc996c969-sw9w5   1/1     Running     0           23m
solutions-sdwan-versa-create-keys-2-tmjwr            0/1     Completed   0           23m
solutions-sdwan-versa-collector-57fdbf7d9b-kwdk9     1/1     Running     0           23m
To see additional pod details, you may use kubectl get pods -o wide command.

Restart SOA

If SevOne NMS has been upgraded or downgraded, please make sure that the SOA container is restarted after a successful upgrade/downgrade. Execute the following command.

From SevOne NMS appliance,

$ ssh root@<NMS appliance>
  
$ supervisorctl restart soa

Domain Name Resolution (DNS) not working

IMPORTANT
A working DNS configuration is a requirement for any SD-WAN collector deployment.
The DNS server must be able to resolve SD-WAN collector's hostname on both the control plane and the agent nodes otherwise, SD-WAN collector will not work. This can be done by adding your DNS servers via nmtui or by editing /etc/resolv.conf file directly as shown in the steps below.
In the example below, let's use the following SD-WAN collector IP addresses.
Hostname IP Address Role
sdwan-node01 10.123.45.67 control plane
sdwan-node02 10.123.45.68 agent

Also, in this example, the following DNS configuration is used and DNS search records, sevone.com and nwk.sevone.com are used.

Nameserver IP Address
nameserver 10.168.16.50
nameserver 10.205.8.50

  1. Using ssh , log into the designated SD-WAN collector control plane node and agent node as sevone from two different terminal windows.

    SSH to 'control plane' node from terminal window 1

    $ ssh sevone@10.123.45.67

    SSH to 'agent' node from terminal window 2

    $ ssh sevone@10.123.45.68

  2. Obtain a list of DNS entries in /etc/resolv.conf file for both control plane and agent nodes in this example.

    From terminal window 1

    $ cat /etc/resolv.conf
# Generated by NetworkManager
search sevone.com nwk.sevone.com
nameserver 10.168.16.50
nameserver 10.205.8.50

    From terminal window 2

    $ cat /etc/resolv.conf
# Generated by NetworkManager
search sevone.com nwk.sevone.com
nameserver 10.168.16.50
nameserver 10.205.8.50

  3. Ensure that DNS server can resolve SD-WAN collector's hostname / IP address on both the control plane and the agent nodes along with the DNS entries in /etc/resolv.conf file (see the search line and nameserver(s)).

    From terminal window 1

    The following output shows that the DNS server can resolve hostname / IP address on both the control plane and the agent nodes.

    Check if 'nslookup' resolves the 'control plane' IP address

    $ nslookup 10.123.45.67
67.45.123.10.in-addr.arpa   name = sdwan-node01.sevone.com.

    Check if 'nslookup' resolves the 'control plane' hostname

    $ nslookup sdwan-node01.sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   sdwan-node01.sevone.com
Address: 10.123.45.67

    Check if 'nslookup' resolves the 'agent' IP address

    $ nslookup 10.123.45.68
68.45.123.10.in-addr.arpa   name = sdwan-node02.sevone.com.

    Check if 'nslookup' resolves the 'agent' hostname

    $ nslookup sdwan-node02.sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   sdwan-node02.sevone.com
Address: 10.123.45.68

    nslookup name 'sevone.com' in search line in /etc/resolve.conf

    $ nslookup sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   sevone.com
Address: 23.185.0.4

    nslookup name 'nwk.sevone.com' in search line in /etc/resolve.conf

    $ nslookup nwk.sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   nwk.sevone.com
Address: 25.185.0.4

    nslookup nameserver '10.168.16.50' in /etc/resolve.conf

    $ nslookup 10.168.16.50
50.16.168.10.in-addr.arpa   name = infoblox.nwk.sevone.com.

    nslookup nameserver '10.205.8.50' in /etc/resolve.conf

    $ nslookup 10.205.8.50
50.8.205.10.in-addr.arpa    name = infoblox.colo2.sevone.com.

    From terminal window 2

    The following output shows that the DNS server can resolve hostname / IP address on both the control plane and the agent nodes.

    Check if 'nslookup' resolves the 'agent' IP address

    $ nslookup 10.123.45.68
68.45.123.10.in-addr.arpa   name = sdwan-node02.sevone.com.

    Check if 'nslookup' resolves the 'agent' hostname

    $ nslookup sdwan-node02.sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   sdwan-node02.sevone.com
Address: 10.123.45.68

    Check if 'nslookup' resolves the 'control plane' IP address

    $ nslookup 10.123.45.67
67.45.123.10.in-addr.arpa   name = sdwan-node01.sevone.com.

    Check if 'nslookup' resolves the 'control plane' hostname

    $ nslookup sdwan-node01.sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   sdwan-node01.sevone.com
Address: 10.123.45.67

    nslookup name 'sevone.com' in search line in /etc/resolve.conf

    $ nslookup sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   sevone.com
Address: 23.185.0.4

    nslookup name 'nwk.sevone.com' in search line in /etc/resolve.conf

    $ nslookup nwk.sevone.com
Server:     10.168.16.50
Address:    10.168.16.50#53

Name:   nwk.sevone.com
Address: 25.185.0.4

    nslookup nameserver '10.168.16.50' in /etc/resolve.conf

    $ nslookup 10.168.16.50
50.16.168.10.in-addr.arpa   name = infoblox.nwk.sevone.com.

    nslookup nameserver '10.205.8.50' in /etc/resolve.conf

    $ nslookup 10.205.8.50
50.8.205.10.in-addr.arpa    name = infoblox.colo2.sevone.com.
    If any of the nslookup commands in terminal window 1 or terminal window 2 above fail or return one or more of the following, you must first resolve the name resolution issue otherwise, SD-WAN collector will not work.

    Example

    ** server cant find 67.45.123.10.in-addr.arpa.: NXDOMAIN

or

** server cant find 68.45.123.10.in-addr.arpa.: NXDOMAIN

or

*** Cant find nwk.sevone.com: No answer

etc.

    If the name resolution fails due to any reason after the deployment of SD-WAN collector, then this could also lead to the failure of normal operations in SD-WAN collector. Hence, it is recommended to ensure that the DNS configuration is always working.

ERROR: Failed to open ID file '/home/sevone/.pub': No such file or directory

As a security measure, fresh installations do not ship with pre-generated SSH keys.

  1. Using ssh, log into the SD-WAN Versa collector control plane node as sevone.

    $ ssh sevone@<SD-WAN collector 'control plane' node IP address or hostname>

    Example

    $ ssh sevone@10.123.45.67

  2. Execute the following command to generate unique SSH keys for your cluster.

    $ sevone-cli cluster setup-keys

Change Collector Log Level

To change the collector log level for any particular agent without redeploying the collector, perform the following steps.

  1. Get redis-cli shell on the master node.

    $ kubectl exec -it {redis-pod}– redis-cli

  2. Publish debug message to the loggingCommand channel.

    PUBLISH loggingCommand "{agent-name}:{loglevel}:{logtype}:{minutes}"

    Where,

    • agent-name - Defines the name of the agent.
    • loglevel - Defines the log-level for the collector. Value can be info , debug , warning , or error.
    • logtype - Defines the type of logs. Value can be nms / vendor / all.
      • nms - Only NMS API response will be printed in debug logs.
      • vendor - Only vendor (vManage / vDirector) API logs will be printed in debug logs.
      • all - NMS and vendor logs will be printed in debug logs.
    • minutes - Defines time (in minutes) for which logs must be printed based on this message. For example, if minutes is set to 5, then debug logs will be printed for 5 minutes based on the message sent from the redis.

    Example

    PUBLISH loggingCommand "DeviceHealthStreamingAgent:debug:all:1"

SSU (Self Service Upgrade)

General

Unable to Start SSU

When installing GUI, if you see the following error, please execute the command export LC_ALL='en_US.utf8' and retry.

Unable to Start SSU Versa
Unable to Login

If you see the following error after entering the correct credentials, change the API port to any accessible port from the browser. For more details, please refer to SD-WAN Versa Collector Upgrade Process Guide > FAQs > section Change Ports.

Invalid Logic Credentials Versa

Pre-check Stage Failures

Invalid vDirector Credentials

When doing a pre-check, if you see the following error, please provide the correct Base64 credentials for vDirector.

vDirector Credentials Versa
Invalid NMS API Credentials

When doing a pre-check, if you see the following error, please provide the correct Base64 API credentials for SevOne NMS.

NMS API Credentials Versa
Invalid NMS SSH Credentials

When doing a pre-check, if you see the following error, please provide the correct Base64 SSH credentials for SevOne NMS.

NMS SSH Credentials Versa
Invalid DI API Credentials

When doing a pre-check, if you see the following error, please provide the correct Base64 API credentials for SevOne Data Insight.

DI API Credentials Versa
Credentials are not in Base64 Format

When doing a pre-check, if you see the following error, please provide credentials (username & password) in Base64 format for the controller, NMS SSH, NMS API, & DI API.

Invalid Base64 Credentials Versa
PAS Sizing Issue

When doing a pre-check, if you see the following error, please review the sizing details and reconfigure the PAS in the collector and then re-trigger the pre-check.

Sizing Issue Versa

Post-check Stage Failures

Fail to Import OOTB Reports

When doing a post-check, if you see the following error, please provide the correct Base64 API credentials for SevOne Data Insight.

DI OOTB Reports Versa