paramiko

How to prevent my app from hanging when parallelising paramiko.SFTPClient.get requests?

由 心已入冬 提交于 2021-01-01 09:11:36
问题 I am trying to parallelise retrieval of files from a server via SFTP and upload to AWS. I am using python multi-threading, the upload part works fine, however, I noticed that the get operation from paramiko.SFTPClient keeps the program hanging at the end. In fact, all of the files are withdrawn and uploaded but the program doesn't exit. I tried many things from similar posts but nothing work, my pseudo-code is the following, any help would be welcome: def create_sftp_connection(host, port,

How to prevent my app from hanging when parallelising paramiko.SFTPClient.get requests?

由 最后都变了- 提交于 2021-01-01 09:08:49
问题 I am trying to parallelise retrieval of files from a server via SFTP and upload to AWS. I am using python multi-threading, the upload part works fine, however, I noticed that the get operation from paramiko.SFTPClient keeps the program hanging at the end. In fact, all of the files are withdrawn and uploaded but the program doesn't exit. I tried many things from similar posts but nothing work, my pseudo-code is the following, any help would be welcome: def create_sftp_connection(host, port,

How to prevent my app from hanging when parallelising paramiko.SFTPClient.get requests?

由 最后都变了- 提交于 2021-01-01 09:04:53
问题 I am trying to parallelise retrieval of files from a server via SFTP and upload to AWS. I am using python multi-threading, the upload part works fine, however, I noticed that the get operation from paramiko.SFTPClient keeps the program hanging at the end. In fact, all of the files are withdrawn and uploaded but the program doesn't exit. I tried many things from similar posts but nothing work, my pseudo-code is the following, any help would be welcome: def create_sftp_connection(host, port,

Translate Oracle SQL Developer SSH Host w/ Local Port Forward Connection to Python

由 岁酱吖の 提交于 2020-12-30 04:45:49
问题 I'm trying to create a Python connection to a remote server through an SSH Jump Host (one I've successfully created in Oracle SQL Developer) but can't replicate in Python. Can connect to SSH Host successfully but fail to forward the port to the remote server due to timeout or error opening tunnels. Safe to assume my code is incorrect rather than server issues. Also need a solution that doesn't use the "with SSHTunnelForwarder() as server:" approach because I need a continuous session similar

Translate Oracle SQL Developer SSH Host w/ Local Port Forward Connection to Python

由 假如想象 提交于 2020-12-30 04:44:51
问题 I'm trying to create a Python connection to a remote server through an SSH Jump Host (one I've successfully created in Oracle SQL Developer) but can't replicate in Python. Can connect to SSH Host successfully but fail to forward the port to the remote server due to timeout or error opening tunnels. Safe to assume my code is incorrect rather than server issues. Also need a solution that doesn't use the "with SSHTunnelForwarder() as server:" approach because I need a continuous session similar

Slow upload of many small files with SFTP

由 家住魔仙堡 提交于 2020-12-30 03:01:11
问题 When uploading 100 files of 100 bytes each with SFTP, it takes 17 seconds here ( after the connection is established, I don't even count the initial connection time). This means it's 17 seconds to transfer 10 KB only, i.e. 0.59 KB/sec! I know that sending SSH commands to open , write , close , etc. probably creates a big overhead, but still, is there a way to speed up the process when sending many small files with SFTP? Or a special mode in paramiko / pysftp to keep all the writes operations

Slow upload of many small files with SFTP

由 老子叫甜甜 提交于 2020-12-30 03:01:05
问题 When uploading 100 files of 100 bytes each with SFTP, it takes 17 seconds here ( after the connection is established, I don't even count the initial connection time). This means it's 17 seconds to transfer 10 KB only, i.e. 0.59 KB/sec! I know that sending SSH commands to open , write , close , etc. probably creates a big overhead, but still, is there a way to speed up the process when sending many small files with SFTP? Or a special mode in paramiko / pysftp to keep all the writes operations

Slow upload of many small files with SFTP

由 核能气质少年 提交于 2020-12-30 03:00:21
问题 When uploading 100 files of 100 bytes each with SFTP, it takes 17 seconds here ( after the connection is established, I don't even count the initial connection time). This means it's 17 seconds to transfer 10 KB only, i.e. 0.59 KB/sec! I know that sending SSH commands to open , write , close , etc. probably creates a big overhead, but still, is there a way to speed up the process when sending many small files with SFTP? Or a special mode in paramiko / pysftp to keep all the writes operations

D10——C语言基础学PYTHON

由 ￣綄美尐妖づ 提交于 2020-12-13 21:44:57
C语言基础学习PYTHON——基础学习D10 20180906内容纲要： 　　1、协程　 　　　　（1）yield 　　　　（2）greenlet 　　　　（3）gevent 　　　　（4）gevent实现单线程下socket多并发 　　2、简单爬虫 　　3、select 　　4、IO多路复用 　　5、小结 　　6、练习 1 协程 协程 又叫微线程，纤程。协程是一种用户态的轻量级线程。 协程有自己的寄存器上下文和栈。协程调度切换时，将寄存器上下文、和栈保存到其他地方，在切换回来的时候回复先前保存的寄存器上下文和栈。 协程能保存上一次调用时的状态。一个cpu支持上万个协程都不是问题，很适合用于高并发处理。 协程的本质就是单线程。无法利用多核资源。 实现协程主要有以下几种方式： （1）yield 1 # Author：ZhangKanghui 2 3 4 def Producer(): 5 r = con1. __next__ () 6 r = con2. __next__ () 7 n = 0 8 while n < 5 : 9 n += 1 10 con1.send(n) 11 con2.send(n) 12 print ( " \033[32;1m[Producer]\033[0m is making baozi %s " % n) 13 14 def Consumer(name

Nested SSH with Paramiko and RSA key file

由 坚强是说给别人听的谎言 提交于 2020-12-08 04:53:29
问题 I am trying to nested SSH using Paramiko where I will connect to Server X from my local machine and from there I will connect to Server Y. Here to connect to Server X I am using username, password authentication and to connect to Server Y using username and RSA key. The thing is that the RSA key is hosted in System X which is used to connect Server Y. I was able to run the script successfully if I hosted the keyfile in my local PC and gave the local pc directory path to Paramiko SSH client.
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