No Data in Analytics Dashboard -- a work around for DNS delay
Article ID: 185162
Updated On:
Products
CA API Developer Portal
Issue/Introduction
It's portal 4.2.9.3 hardened image, installed using offline installer. Published portal published apis, tested it few times and checked the analytics dashboard.
It shows No data. the jarvis container log shows,
Failed to send document back to kafka:org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server 'zookeeper1:2181' with timeout of 8000 ms
Cause
- Test the DNS delay by following command,
docker exec -it -u 0 $(docker ps --filter name=portal_dispatcher -q) /bin/bash -c "time nslookup zookeeper1 127.0.0.11"
It shows the DNS delay is about 10 seconds
- The delay is the same by default /etc/resolv.conf settings, or by comment out every line in /etc/resolv.conf
- As it is longer than 8 seconds, the Jarvis is not working
Environment
Release : 4.2.9.3
Component : API PORTAL
Resolution
Add following line to /etc/resolv.conf will fix the problem,
options timeout:1 attempts:1
(The default value of timeout is 5 seconds, and attempts is 2, that's why it has 10 seconds delay)
options timeout:1 attempts:1
(The default value of timeout is 5 seconds, and attempts is 2, that's why it has 10 seconds delay)
Additional Information
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