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Knowledge Base

Troubleshooting vRNI network connectivity issues (52357)

Last Updated: 10/15/2020Categories: TroubleshootingTotal Views: 5135Language:
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Symptoms

After entering the Datasource details, when you click on validate you see a message similar to:
Datasource is not reachable by proxy VM

Purpose

This article helps you to validate the network connectivity between Datasources.

Cause

This issue occurs due to environmental network issues.

Resolution

To resolve this issue, perform the following tests with cURL and TCPDUMP to verify if there is access to the Datasource and active communication occurring between the Proxy and Datasource.

Perform a cURL test against the Datasource:

# curl -k -v <Datasource IP> <port>

Example cURL command against a Datasource:

# curl -k -v https://pwpdvavcc01.app.vmware.net:443

Run TCPDUMP on the Proxy and Datasource to check for active communication between them:

# tcpdump -i eth0 host <Target FQDN or IP> and port <Port Number>

Example TCPDUMP run from the Proxy:

ubutnu@vrni-proxy-release:/home/ubuntu# sudo tcpdump -i eth0 port 443 and dst pwpdvavcc01.app.vmware.net
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
10:56:28.446965 IP pwpdvrnipxy01.app.vmware.net.51922 > pwpdvavcc01.app.vmware.net.https: Flags [S], seq 17878606, win 29200, options [mss 1460,sackOK,TS val 60766769 ecr 0,nop,wscale 7], length 0
10:56:29.443252 IP pwpdvrnipxy01.app.vmware.net.51922 > pwpdvavcc01.app.vmware.net.https: Flags [S], seq 17878606, win 29200, options [mss 1460,sackOK,TS val 60767019 ecr 0,nop,wscale 7], length 0

Example TCPDUMP run from the Datasource:

root@pwpdvavcc01 [ ~ ]#  tcpdump -i eth0 host pwpdvrnipxy01.app.vmware.net and port 443
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
11:11:18.510627 IP pwpdvavcc01.app.vmware.net.https > pwpdvrnipxy01.app.vmware.net.52180: Flags [S.], seq 3905769542, ack 2625188649, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 8], length 0
11:11:24.100135 IP pwpdvrnipxy01.app.vmware.net.52206 > pwpdvavcc01.app.vmware.net.https: Flags [S], seq 946409336, win 29200, options [mss 1460,sackOK,TS val 60990683 ecr 0,nop,wscale 7], length 0

Related Information

vRNI services stop / do not start in Platform/Proxy when there is inconsistencies in NTP Sync (2151878)
https://kb.vmware.com/kb/2151878

Detectable by VMware SkylineTM

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Additional Resources

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Error: "Se produjo un error de PBM durante PreCreateCheckCallback: Conexión rechazada" al crear el grupo de protección (53707)

KB
•
Error: "Ocorreu um erro de PBM durante PreCreateCheckCallback: Conexão recusada" ao criar grupo de proteção (53707)

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