Support Questions

Find answers, ask questions, and share your expertise

Not able to access NiFi web UI

avatar
Rising Star

yesterday, I have installed Apache NiFi in my Linux Server root directory as per in the administration guide and its started and worked fine till yesterday but it is not working today. The error in web UI is "The connection was reset" but in my Linux status it shows Nifi running.

20 REPLIES 20

avatar
Rising Star

Thanks@Jitendra Yadav

Selinux is already disabled but i got the error still

Jitendra Yadadisabled - SELinux is fully disabled. SELINUX=disabled

avatar
Rising Star

Yes, disabled - SELinux is fully disabled. SELINUX=disabled

it fully disabled

avatar
Master Mentor

@Iyappan Gopalakrishnan

Here is primer and best practice please try increasing the limits and retest

Geoffrey

avatar
Rising Star

I have done all but except

Set how long sockets stay in a TIMED_WAIT state when closed

Because it shows Error:

error: "net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait" is an unknown key

avatar
Master Mentor

What version of Linux is your server and protocol ? ipv4 or ipv6

Put some value like net.netfilter.nf_conntrack_tcp_timeout_time_wait = 30

avatar
Rising Star

its ipv4 and tried to put net.netfilter.nf_conntrack_tcp_timeout_time_wait = 30 and receive same "is an unknown key"

avatar

Iyappan Gopalakrishnan

Please check for firewall issues as well.

avatar
Rising Star

i check firewall also but issue continuous remains same...

avatar
Master Mentor

Are there any WARN/ERROR messages being produced in the nifi-app.log or nifi-bootstrap.log?

avatar
Master Mentor

Is your NiFi configured to run http or https?