kandi X-RAY | linux-server Summary
kandi X-RAY | linux-server Summary
Notes and source code of "Linux High Performance Server Programming" and "Linux Multithreaded Server Programming: Using muduo C++ Network Library", as well as two lightweight server project codes
Top functions reviewed by kandi - BETA
linux-server Key Features
linux-server Examples and Code Snippets
Trending Discussions on linux-server
- I want to scedual a task with crontab to run a python file in a specific anaconda environment every day at a certain time.
- I also have a python script to do so.
- The pythons script runs if I jsut execute it with
python h.pyin the anaconda evoronment in terminal. h.py is in the home directory
- I am usaing Ubuntu 20.04, and i havent refreshed on intalled any new cron or crontab
- I have tried the following commands to get it work but they just do Nothing (the result should be a folder and it is learly not has been created)
ANSWERAnswered 2021-Jun-09 at 10:37
If the Python file only need python (not other library)
I have a shinyapp deployed on a local linux-server, and I got problems when importing a csv-file.
That is to say that I want to import this file and render it as table,
but instead it only gives me this:
So, basically the import stopped when an unknown letter appeared: µ.
The log-file shows me the following warning:...
ANSWERAnswered 2021-Apr-13 at 15:03
Answer: i used the wrong encoding, so my code was correct apart from that. So for everyone who might at some point stumble over this post. Just make sure that you are really using the correct encoding before spending too many hours trying to find your bug in the code.
I know that people have asked similar questions, such as this, however I've not found an answer on here, now if there is an answer to this problem, by all means correct me & I'll delete my question, or whatever! 🙂Potential Options
From what I've read up online, a potential would be to use something like kerberos and/or spenago, keep in mind I'm no expert on these tools/subject matters. But I was wondering if there was any other potential options? - I know if I do go down the route of kerberos, I have no doubt that it'll require some tinkering, maybe some trial & error, I'm not sure, currently I'm still looking at what my options are.
If you guys think that the kerberos route may be my best bet, then could you guys point me in the direction of some example(s) on how I can get up & running?
In the ideal world I'd be able to just use some NPM package that just allows me to do this out of the box, but I've also found nothing that could allow me to do this....
ANSWERAnswered 2021-Jan-30 at 11:34
So, after doing much research with one guy that I work with, we finally found a solution that seems to work for us. I won't go into too much detail here, if you want to read more into it, then you can find that I've started to write up more about it on my own website, here. 🙂
I'm not doing that to be lazy, but due to the fact that if I tried to cram everything into this answer, then I feel that it would be like reading an essay.Dependencies
Hi I have the following "script" below which works fine....
ANSWERAnswered 2020-Sep-09 at 13:27
If you are unsure about the availability of Bash, or another shell which knows about arrays; you can adapt your code to iterate over your server lists with the POSIX available grammar (no array):
On a provided Linux-server without root access I am bound to preinstalled Python-packages (e.g. cannot upgrade them).
However, I am able to install a package directly from a wheel (
.whl) by using
pip3 install /path/package_name --user which will install the package to a site-package-folder preserved to my user.
In my special case I want to upgrade the
scikit-learn-package. This package is already preinstalled and I cannot upgrade it (root access missing), however, I can install the newer version in the
In the filesystem I can see that both installations are now present in their respective folders.
Both paths are known to python (checked by using
When I import scikit-learn via
import sklearn and print the version (
sklearn.__version__), I'll always end up with the preinstalled version and not the new one I installed in my
Given two installations of the same module with a differing version: How can I define in Python during the import which module/version to load?
The premise is that I cannot disable/uninstall the old version (root access again..)....
ANSWERAnswered 2020-Sep-03 at 18:56
Thanks to @0 0 I was able to figure out the solution as well as a workaround:
When I compared
sys.path with the defined
PYTHONPATH in the shell (the
sys.path like answered here on SO) I saw that the PYTHONPATH did not know about the
--user-folder (even though
sys.path knew - this puzzles me a bit).
Thus, I added to my
Linux-Server-1 Port-A <==> Port 1 DPDK-Server-2 Port 2 <==> Port B Linux-Server-2.
- The physical links are connected
- Devices bound to DPDK:
ANSWERAnswered 2020-Jul-02 at 09:20
ethtool -while application is down is not a trusted way. Depending upon DPDK versionrte_eth_dev_close
orrte_cleanup` would not have put the NIC in the right state.
- But while running the application, if DPDK port-1 is coming as down following can be reason
a. Server-3 port might be auto-negotiating with DPDK port-1 leading to
rte_eth_link_get_nowait to report as
down. (right API is to invoke rte_eth_link_get).
b. The Server-3 port might manually be configured in non-duplex and non 10G mode.
the right way to debug is to
- put DPDK port back to the kernel as suggested in comments.
- cross-check auto-neg and speed.
- configure on server-1 and server-3 with
no auto-neg, 10G, full-duplex
- bind the server-2 port-0 and port-1 to DPDK.
- run DPDK test-pipeline if possible with whitelist.
ethtool -tfor port-B on server-3 to cross the results too.
note: this will help you identify if it server-3 ports driver/firmware which acts differently with auto-neg as the ports are sending and receiving packets is successful with
example/skeleton with command
$RTE_SDK/examples/skeleton/build/basicfwd -l 1
[EDIT-1] based on the update from the comment it looks like
rte_eth_link_get_nowait is the fast approach, the right one is to be used with
rte_eth_link_get. Requested for online debug with the author
[EDIT-2] based on the comment
rte_eth_link_get has done the desired job. As I recollect
rte_eth_link_get wait for the actual readout from physical device registers, while
rte_eth_link_get_nowait is invoked without wait. hence the right values are populated for
I have tried various SO solutions on going about this. System Config:
- MacOS Catalina
- Python 3.7.6 (Anaconda)
- Selenium 3.141
Chrome v81, ChromeDriver v81.
Error: Can not connect to the service chromedriver.
I have tried the same with various driver and browers: Gecko/Firefox(Fresh install), Safaridriver/Safar - all with the same error.
The chromedriver, geckodriver are in PATH as well as usr/local/bin.
Code to reproduce:...
ANSWERAnswered 2020-May-15 at 20:57
While experimenting to make this work, I somehow messed up while creating venv and docker images. Python as a whole got corrupted, along with chrome drivers. Had to reset the system.
That somehow has solved my problem with selenium. If anyone else finds the answer to this bug, be sure to drop your solution.
Until then, this was my update about how I got it working.
I am trying to setup Keycloak as a IdP (Identity Provider) and Nextcloud as a service. I want to setup Keycloak as to present a SSO (single-sign-on) page.
I am running a Linux-Server with a Intel compatible CPU. What is the correct configuration?
ANSWERAnswered 2020-Jan-06 at 23:23
To use this answer you will need to replace
domain.com with a actual domain you own. Also replace
email@example.com with your working e-mail address.
It is assumed you have docker and docker-compose installed and running.Setup your services with Docker
In addition to keycloak and nextcloud I use:
- nginx as a reverse-proxy
- letsencyrpt to generate the SSL-certificates for the sub-domains.
I'm setting up all the needed service with docker and docker-compose. This is how the
docker-compose.yml looks like this:
I have nodejs app running on centos 7 using pm2
on server when I run...
ANSWERAnswered 2019-Nov-25 at 11:29
after spending hours :(, finally this one solved it
I am working on a complete kickstart script for setting up servers and adding them finally to my Nagios configuration. Adding the newly created / kickstarted servers is not an issue, however how do I remove old ones (if they previously existed)?Current situation
This is what I am currently using:...
ANSWERAnswered 2019-Oct-23 at 11:23
Okay I managed to get it removed and hopefully it will help others.
I am now using the follwing piece of code to replace a match based on the hostname used:
No vulnerabilities reported
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