If no other logical errors occur, retries and EOF errors might be caused by network issues. It is recommended to first use tools to check the network connectivity. In the following example, iperf is used for troubleshooting:
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Execute the following command on the server-side node where the retries and EOF errors occur:
iperf3 -s -
Execute the following command on the client-side node where the retries and EOF errors occur:
iperf3 -c <server-IP>
The following example is the output of a client node with a good network connection:
$ iperf3 -c 192.168.196.58
Connecting to host 192.168.196.58, port 5201
[ 5] local 192.168.196.150 port 55397 connected to 192.168.196.58 port 5201
[ ID] Interval Transfer Bitrate
[ 5] 0.00-1.00 sec 18.0 MBytes 150 Mbits/sec
[ 5] 1.00-2.00 sec 20.8 MBytes 175 Mbits/sec
[ 5] 2.00-3.00 sec 18.2 MBytes 153 Mbits/sec
[ 5] 3.00-4.00 sec 22.5 MBytes 188 Mbits/sec
[ 5] 4.00-5.00 sec 22.4 MBytes 188 Mbits/sec
[ 5] 5.00-6.00 sec 22.8 MBytes 191 Mbits/sec
[ 5] 6.00-7.00 sec 20.8 MBytes 174 Mbits/sec
[ 5] 7.00-8.00 sec 20.1 MBytes 168 Mbits/sec
[ 5] 8.00-9.00 sec 20.8 MBytes 175 Mbits/sec
[ 5] 9.00-10.00 sec 21.8 MBytes 183 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate
[ 5] 0.00-10.00 sec 208 MBytes 175 Mbits/sec sender
[ 5] 0.00-10.00 sec 208 MBytes 174 Mbits/sec receiver
iperf Done.
If the output shows low network bandwidth and high bandwidth fluctuations, a large number of retries and EOF errors might appear in each component log. In this case, you need to consult your network service provider to improve the network quality.
If the output of each metric looks good, try to update each component.