Questions tagged [sockets]

99 questions
561
votes
8 answers

How to know what program is listening on a given port?

I suspect a program is listening on port 8000 on my machine. When I run the following command, I get this error: > python -m SimpleHTTPServer # Lots of python error socket.error: [Errno 98] Address already in use If I use another port ( 8000 is the…
yansal
  • 5,713
42
votes
2 answers

What are socket files?

Recently, I started using tmux; I'm trying to use the pair programming feature in that software. During the process a socket file was created. My question is: what are socket files, how am I to open them on Ubuntu and how are they used?
Moha the almighty camel
  • 1,713
11
votes
1 answer

Launching programs after hostname change returns error _IceTransSocketUNIXConnect: could not connect to local-host

After changing the hostname on 14.04 I cannot launch unetbootin, attempting to launch the application from bash returns: _IceTransSocketUNIXConnect: Cannot connect to non-local host OLDHOSTNAME _IceTransSocketUNIXConnect: Cannot connect to non-local…
Oatlad
  • 111
11
votes
4 answers

How can I create a new socket in /dev?

I want to create a new socket file in /dev . Does the way to get it is adding a new rule to udev ?
Marc
  • 491
9
votes
1 answer

Can't start MySQL server if the .sock file is changed in /etc/mysql/my.cnf

I have installed MySQL server 5.5 on Ubuntu 12.04. I am trying to start MySQL server on a different sock file. By default MySQL runs on /var/run/mysqld/mysqld.sock. I am trying to run the same server on /var/run/mysqld/mysqld1.sock. For this I have…
user117844
  • 151
9
votes
5 answers

Unable to start Apache on Ubuntu 12.10: no listening sockets available

I'm unable to start apache2 installed using apt-get. I'm getting the very same error on 2 separate Ubuntu 12.10 installations, one on my desktop PC, the other one running in VirtualBox: michal@michaltest:~$ sudo service apache2 start * Starting web…
michalstanko
  • 191
8
votes
1 answer

how to stop socket with linux command?

how to stop socket in linux : socket ==> root@root:/home/aa/test# netstat | grep 3966 tcp 0 0 server:3966 server:57004 TIME_WAIT thank
Ellouze Anis
  • 261
7
votes
3 answers

Mysql install ERROR: Database files are locked. Daemon already running? Warning: Unable to start the server

At first I removed previous MySQL installation apt autoremove mysql-server-8.0 MySQL has been removed from services. Then I tried to install new MySQL apt install mysql-server which throws me an error: ERROR: Database files are locked. Daemon…
Čamo
  • 769
4
votes
0 answers

Mariadb Plugin 'unix socket' is not loaded

After installing Mariadb on Ubuntu 15.10 I was unable to use mysql. The following error was reported: Plugin 'unix socket' is not loaded. It seems that plugin table in the mysql db was empty. Why was this? My remedy was: killall mysqld_safe killall…
iainH
  • 808
4
votes
0 answers

Bluetooth Socket Program: connect: Host is down

I am trying to test rfcomm_server.c and rfcomm_client.c (from the link https://github.com/balle/bluetooth-snippets ) on my new Bluetooth dongle. When I run rfcomm_client, it exits on connect giving the error "connect: Host is down". I am running the…
UbflPM
  • 41
4
votes
0 answers

How to restart a systemd socket?

Problem in a nutshell: systemd creates a socket on boot, but it is not possible to restart or recreate it without a reboot. /etc/systemd/system/gunicorn.socket [Unit] Description=gunicorn socket [Socket] ListenStream=/run/gunicorn.sock [Install]…
leggewie
  • 1,097
4
votes
1 answer

Server stops accepting connections after ~120,000 active on 18.04.3

I'm running a type of perf test where I have a simple TCP server with 4 IP addresses that is listening on a port and getting connections from several other computers on the local network. Everything works fine up to just under 120,000 active…
Denis
  • 61
3
votes
1 answer

/var/run/postgres keeps being deleted, preventing postgres from starting

By default, my PostgreSQL installation was creating a socket in /tmp but my psql command-line client was looking in /var/run/postgresql/.s.PGSQL.5432 . To remedy this, I edited postgresql.conf and changed the directory to unix_socket_directories =…
sparkyspider
  • 141
3
votes
2 answers

postgresql broken after 14.04 despite succesful pg_upgrade

I'm running an Ubuntu VPS where i'm am upgrading to 14.04. everything has gone smoothly so far. Except the PostgreSQL migration from 9.1 to 9.3. The server hosts a Django 1.6 site and the traceback that I get is this: File…
Thyssen
  • 31
3
votes
5 answers

iriunwebcam doesn't work on 20.04

iriunwebcam ( https://iriun.com ) has worked fine on Ubuntu 20.04 LTS as well as on Ubuntu 20.04 beta on another VMware virtual machine, while it won't still work on a real PC. Also it works fine in Ubuntu 19.10 on another virtual machine. In…
hakanekat
  • 43
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