Plugin:NTPd fails

[WirthmU]

• Version of collectd: 5.7.2
• Operating system / distribution: Ubuntu 18.04.6 LTS
• Kernel version (if applicable): 4.15.0-161-generic

Expected behavior

Plugin:NTPd is enabled and configured as supposed

Actual behavior

[2021-10-22 08:18:30] recv(2) failed: Connection refused
[2021-10-22 08:18:30] ntpd plugin: ntpd_do_query (REQ_GET_KERNEL) failed with status -1
[2021-10-22 08:18:30] read-function of plugin `ntpd' failed. Will suspend it for 20.000 seconds.

any help to this`?

[rpv-tomsk]

Hi,

1. Why don't use more recent Collectd version?
2. You should have UDP 123 port opened on 127.0.0.1

# netstat -an |grep 123
...
udp        0      0 127.0.0.1:123           0.0.0.0:*
udp        0      0 0.0.0.0:123             0.0.0.0:*
...

3. What is the ntpd version you use ?

[rpv-tomsk]

collectd#932
openwrt/packages#12777

It seems you have to re-enable "mode 7"?

[WirthmU]

I am on Ubuntu and apt install gives:
collectd is already the newest version (5.7.2-2ubuntu1.2)

uw@uw-SBC-FITPC2:~/tmp/collectd-5.12.0$ netstat -an |grep 123
udp 0 0 127.0.0.1:38243 127.0.0.1:123 ESTABLISHED
udp 0 0 127.0.0.1:48095 127.0.0.1:123 ESTABLISHED
udp 0 0 192.168.1.43:123 0.0.0.0:*
udp 0 0 127.0.0.1:123 0.0.0.0:*
udp 0 0 0.0.0.0:123 0.0.0.0:*
udp6 0 0 fe80::3c88:12d7:ff0:123 :::*
udp6 0 0 ::1:123 :::*
udp6 0 0 :::123 :::*
unix 2 [ ACC ] STREAM LISTENING 30895 /tmp/ssh-QWqXkbTyMvWs/agent.1236
unix 3 [ ] STREAM CONNECTED 31123
unix 3 [ ] STREAM CONNECTED 21123

I have re-enabled "mode 7" but it does not solve the problem.

NTP Version:
ntp is already the newest version (1:4.2.8p10+dfsg-5ubuntu7.3).