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why access to some port isn't stable [Resolved]

we install the netdata tool ( its OS performance tool )

we notice that netdata installation failed on

curl -sSL --connect-timeout 10 --retry 3 http://localhost:19999/netdata.conf

and:

we notice that sometimes port 19999 is blocked and sometimes we have access

example when we have access

 telnet localhost 19999
Trying ::1...
Connected to localhost.
Escape character is '^]'.
CConnection closed by foreign host.

and sometimes port blocked

Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused

what could be the reason for this very strange behavior

note - firewall is disable and stooped , also iptables


Question Credit: yael
Question Reference
Asked August 18, 2019
Posted Under: Unix Linux
32 views
1 Answers

Your Answer
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