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Backend Server respond with * LibreSSL SSL_read: Connection reset by peer, errno 54
Try to log the reset cause (https://my.f5.com/manage/s/article/K13223) and see if F5 provides any cause for the reset packet.
Since the iRule logs goes up to the HTTP request, I suspect either a connection problem with the server or a pool member selection failure, the reset logs will tell you
- pullb0xOct 23, 2023Nimbostratus
Thank you so much for the feedback.
After I enabled it, this is what I am seeing.
-------------------------------------------
TCP/IP Reset Cause
RST Cause: Count
-------------------------------------------
Flow expired (sweeper) 4
No flow found for ACK 1
No local listener 32027
No server selected 1
RST from BIG-IP internal Linux host 187450
TCP RST from remote system 3
TCP retransmit timeout 172
handshake timeout 4- Amine_KadimiOct 23, 2023MVP
These are only statistical counters, you need to look at /var/log/ltm or tcpdump to find the message related to the reset cause
- pullb0xOct 25, 2023Nimbostratus
Appreciate all your help. I am a novice in reading pcap files.
Below screenshot of the traffic
ip ending
...209 = F5
...35 = my endpoint
.6 = mobile device
per the screenshot traffic from .6 (mobile device) to .35 (endpoint) is TCP retransmission.
What do I have to look at to see what is causing this?
Apologize again if this is kind of a stupid question but I am a noob in this.
Appreciate pointing me in the right direction.
Thank you
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