Hi, sometimes the FTP server that rely on worker instance is really unstable.
I just tried to upload video and while uploading it got 4 disconnections that were fortunately handled well and the upload resumed from where it stopped. After some minutes the connection went away again and didn't get up in time, so that Filezilla's log said: Status: Delaying connection for 5 seconds due to previously failed connection attempt... Status: Resolving address of ####### Status: Connecting to #######:21... Status: Connection attempt failed with "ECONNREFUSED - Connection refused by server". Error: Could not connect to server and ploneftp log said: []2.236.246.250:52364 Connected. 2.236.246.250:52364 ==> 220 pyftpdlib 0.7.0 ready. 2.236.246.250:52364 <== USER ##### 2.236.246.250:52364 ==> 331 Username ok, send password. 2.236.246.250:52364 <== PASS ****** authenticating to Zope FTP server 0.0.0.0:8021 with username ##### authenticated successfully with Plone FTP 2.236.246.250:52364 ==> 230 2.236.246.250:52364 <== OPTS MLST type;perm;size;modify;unix.mode;unix.uid;unix.gid; 2.236.246.250:52364 ==> 200 MLST OPTS type;perm;size;modify;unix.mode;unix.uid;unix.gid; 2.236.246.250:52364 <== CWD / 2.236.246.250:52364 ==> 250 "/" is the current directory. 2.236.246.250:52364 <== PWD 2.236.246.250:52364 ==> 257 "/" is the current directory. 2.236.246.250:52364 <== TYPE I 2.236.246.250:52364 ==> 200 Type set to: Binary. 2.236.246.250:52364 <== PASV 2.236.246.250:52364 ==> 227 Entering passive mode (192,107,92,224,201,23). 2.236.246.250:52364 <== STOR millumino-test-upload.mp4 2.236.246.250:52364 ==> 150 File status okay. About to open data connection. []@127.0.0.1:49417 Disconnected. ZopeHandler got a closed connection So, it seems that the zope instance (the worker in this case, as per plumi default setup) is closing the connection on the FTP port. We tried to increment the number of threads of this instance from 2 to 10 but it looks like it has no effects. What could cause this weird behavior in your experience? What can we do to debug this or to tweak our server setup in order to avoid this? Thanks in advance for any pointers :) Cheers, S.
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