Every line of Logs is not passing through

Hello All ,
I have below sample line in from the log file which is not passing through logstash. I am not sure where the problem is , I have the below log line

2021-02-24 10:46:29,827 INFO [5b5021c6-6af1-4e70-9cfb-f099386a8890] AzureServiceBus.Processors.MessageProcessor - Processing message {
"Body": "PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48RmxlZXRWZWhpY2xlQ2hhbmdlRXZlbnQgeG1sbnM6eHNpPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxL1hNTFNjaGVtYS1pbnN0YW5jZSI+PEZsZWV0PjxGbGVldElEPjQ1Mjc0MDAwMDM8L0ZsZWV0SUQ+PFZlaGljbGU+PFZJTj5XMVQ5NjM0MjMyMDQzOTAxMDwvVklOPjxDdXN0b21lclZlaGljbGVOYW1lPkJWNzAgQVlVPC9DdXN0b21lclZlaGljbGVOYW1lPjxTZXJ2aWNlRGVhbGVyT3V0bGV0SWQ+R1MwMDEzOTQ1PC9TZXJ2aWNlRGVhbGVyT3V0bGV0SWQ+PC9WZWhpY2xlPjwvRmxlZXQ+PGFjdGlvbj5BZGQ8L2FjdGlvbj48L0ZsZWV0VmVoaWNsZUNoYW5nZUV2ZW50Pg==",
"MessageId": "ID:414d5120585a3046303031312020202032883560ecbc0a20",
"ExpiresAtUtc": "9999-12-31T23:59:59.9999999",
"TimeToLive": "10675199.02:48:05.4775807",
"CorrelationId": "10fb5c17-bfbd-40a3-985c-52b157a0c94f",
"Label": "FleetVehicleChangeEvent",
"ContentType": "application/xml",
"ScheduledEnqueueTimeUtc": "0001-01-01T00:00:00",
"Size": 361,
"UserProperties": {},
"SystemProperties": {
"IsLockTokenSet": true,
"LockToken": "f2b26158-5a76-411d-bf14-49074d4d320b",
"IsReceived": true,
"DeliveryCount": 1,
"LockedUntilUtc": "2021-02-24T09:47:29.728Z",
"SequenceNumber": 212214,
"EnqueuedSequenceNumber": 934441,
"EnqueuedTimeUtc": "2021-02-24T09:46:22.805Z"
"BodyAsString": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><FleetVehicleChangeEvent xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">4527400003W1T96342320439010BV70 AYUGS0013945Add"

Grok pattern :


Multiline pattern from filebeat :

   - //XXXX/XX/Log.txt
    - //XXXX/XX/Log.txt
  multiline.pattern: '^[0-9]{4}-[0-9]{2}-[0-9]{2}'
  # Defines if the pattern set under pattern should be negated or not. Default is false.
  multiline.negate: true
  # Match can be set to "after" or "before". It is used to define if lines should be append to a pattern
  # that was (not) matched before or after or as long as a pattern is not matched based on negate.
  # Note: After is the equivalent to previous and before is the equivalent to to next in Logstash
  multiline.match: after
  tail_files: false

Kindly help me with the debugging steps , FYI , I am getting all the other lines from the same log line.

Thanks and Regards

I'm not sure what the problem is either. Are you getting error messages from logstash? If so what are they? What makes you think the events are "not passing through logstash"?

Hello @Badger ,

I don't see any error in the logs. I confirmed that they are not passing because i don't see this particular line in Kibana, where as i can see all the other lines .

For example , below event i can see in Kibana .

2021-03-10 06:22:17,471 INFO [997c7dad-c95c-45ea-a62f-14a1f1279364] FleetboardListener.MessageReceiverService - Handling message with Label 'FleetVehicleChangeEvent

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