Unable to add datasource to the AON (vRNI) as its gives error "Hostname/IP address is unreachable"

Products

VCF Operations for Networks

Issue/Introduction

Unable to add datasource in Aria operations for Networks(AON). When clicked on validate by selecting collector node & credentials its gives error "Hostname/IP address is unreachable"

Environment

VMware Aria Operations for Networks 6.14 and later

Cause

TCP port 443 between Collector and Datasource is not whitelisted.

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(Collector) and Datasource.

Login to collector as 'supportuser' and run the following commands.

Perform a CURL test against the Datasource:

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

Example cURL command against a Datasource:

# curl -k -v https://XXXXXX.app.XXXXXX.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 XXXXXX.app.XXXXXX.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 XXXXXX.app.XXXXXX.net.https.51922 > XXXXXX.app.XXXXXX.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 XXXXXX.app.XXXXXX.net.https.51922 > XXXXXX.app.XXXXXX.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 XXXXXXX1.app.XXXXX.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 XXXXXX.app.XXXXXX.net.https > XXXXXX.app.XXXXXX.net.https: Flags [S.], seq 3905769542, ack 2625188649, win 29200, options [mss 1460,nop,nop,sackOK,nop,wscale 8], length 0
11:11:24.100135 IP XXXXXX.app.XXXXXX.net.https.52206 > XXXXXX.app.XXXXXX.net. Flags [S], seq 946409336, win 29200, options [mss 1460,sackOK,TS val 60990683 ecr 0,nop,wscale 7], length 0

Additional Information

Refer https://ports.broadcom.com/home/VMware-Aria-Operations-for-Networks