I am running Windows 10 Pro on one of my workstations with ssh enabled. I am able to ssh from my Mac to Windows successfully but when I try the command
New-PSSession -HostName xxxx -UserName yyyy
I receive the following message after entering my password: The background process reported an error with the following message:
The SSH client session has ended with error message: subsystem request failed on channel 0.
Sorry, I also ran into the same issue and couldn't get it done.
the best way I think is to run it using shh directly
Eg:
ssh user#ip-or-hostname "quser"
also have this issue.... using ssh directly is working but I was trying to do something like that:
$s = New-PSSession -ComputerName myComputer -UserName userName -Port sshPort
Invoke-Command -Session $s -ScriptBlock {
cd /pathToDockerCompose
docker-compose down
docker-compose up -d
}
so if someone has an alternative to do this, I'm all ears :-).
edit: btw, I want it to be called from a Windows machine and executed on linux.
Had a similar situation just occur on one of my machines, SSH worked but trying to SSH through powershell with Enter-PSSession gave the same "subsystem request failed on channel 0" error. Turns out I didn't have the powershell subsystem registered in the sshd_config file for OpenSSH.
See https://lazyadmin.nl/powershell/powershell-ssh/ for additional info and the same change I made to get it working
Related
Driver failed programming external connectivity on endpoint angular4_db_1 bind for port is already allocated.
error: for database cannot start service database.
userland proxy: Bind for 0.0.0.0:5432 failed: port is already allocated
Encountered errors while bringing up the project.
During composing my angular program I got this error .
Help me to solve it
Open the Docker Container. And just stop the running programe. Then run the required Program you will be able to use the command
docker-compose up -d
Will easily solve the Error.
To open angular dev server on another port you can use
ng serve --host localhost --port 4201 --open
I have successfully forked and built the Context Broker source code on a CentOS 6.9 VM and now I am trying to run the functional tests as the official documentation suggests. First, I installed the accumulator-server.py script:
$ make install_scripts INSTALL_DIR=~
Verified that it is installed:
$ accumulator-server.py -u
Usage: accumulator-server.py --host <host> --port <port> --url <server url> --pretty-print -v -u
Parameters:
--host <host>: host to use database to use (default is '0.0.0.0')
--port <port>: port to use (default is 1028)
--url <server url>: server URL to use (default is /accumulate)
--pretty-print: pretty print mode
--https: start in https
--key: key file (only used if https is enabled)
--cert: cert file (only used if https is enabled)
-v: verbose mode
-u: print this usage message
And then run the functional tests:
$ make functional_test INSTALL_DIR=~
But the test fails and exits with the message below:
024/927: 0000_ipv6_support/ipv4_ipv6_both.test ........................................................................ (FAIL 11 - SHELL-INIT exited with code 1) testHarness.sh/IPv6 IPv4 Both : (0000_ipv6_support/ipv4_ipv6_both.test)
make: *** [functional_test] Error 11
$
I checked the file ../0000_ipv6_support/ipv4_ipv6_both.shellInit.stdout for any hint on what may be going wrong but error log does not lead me anywhere:
{ "dropped" : "ftest", "ok" : 1 }
accumulator running as PID 6404
Unable to start listening application after waiting 30
Does anyone have any idea about what may be going wrong here?
I checked the script which prints the error line Unable to start listening application after waiting 30 and noticed that stderr for accumulator-server.py is logged into the /tmp folder.
The accumulator_9977_stderr file had this log: 0000_ipv6_support/ipv4_ipv6_both.shellInit: line 27: accumulator-server.py: command not found
Once I saw this log I understood the mistake I made. I was running the
functional tests with sudo and the secure_path was being used instead of my PATH variable.
So at the end, running the functional tests with the command below solved the issue for me.
$ sudo "PATH=$PATH" make functional_test INSTALL_DIR=~
This can also be solved by editing the /etc/sudoers file by:
$ sudo visudo
and modifying the secure_path value.
I am trying to connect with ejabberd server with following command
# ejabberdctl start
but, it gives me below error.
Failed RPC connection to the node ejabberd#localhost: nodedown
Please help me to figure out this. thank you
first you have to check the service, terminal code below.
ps aux | grep ejabberd
if any unwanted servicer running kill that,terminal code below.
eg.
kill 14056
and stop the ejabberd service ,terminal code below.
ejabberdctl stop
or
/sbin/ejabberdctl stop
close the terminal and reopen terminal and start the ejabberd service,terminal code below.
ejabberdctl start
or
/sbin/ejabberdctl start
you have to change your directory to the folder which contains ejabberdctl file:
cd /Applications/ejabberd/bin
Then you have to use this code to start ejabberd:
./ejabberdctl start
you can also use this to see the status of your ejabberd server:
./ejabberdctl status
first check if service is running or no then ./ejabberdctl start. If you still have errors you should post your log because I can't see what is happening on your machine
I want to ping an external ip from all of my servers that run zabbix agent.
I searched and find some articles about zabbix user parameters.
In /etc/zabbix/zabbix_agentd.conf.d/ I created a file named userparameter_ping.conf with following content:
UserParameter=checkip[*],ping -c4 8.8.8.8 && echo 0 || echo 1
I created an item named checkip in zabbix server with a graph but got no data. After some another digging I found zabbix_get and tested my userparameter but I got the error : ZBX_NOTSUPPORTED
# zabbix_get -s 172.20.4.43 -p 10050 -k checkip
my zabbix version :
Zabbix Agent (daemon) v2.4.5 (revision 53282) (21 April 2015)
Does anybody know what I can do to address this?
After some change and talks with folks in mailing list finally it worked but how :
first i created a file in :
/etc/zabbix/zabbix_agentd.conf.d/
and add this line :
UserParameter=checkip[*],ping -W1 -c2 $1 >/dev/null 2>&1 && echo 0 || echo 1
and run this command :
./sbin/zabbix_agentd -t checkip["8.8.8.8"]
checkip[8.8.8.8] [t|0]
so everything done but Timeout option is very important for us :
add time out in /etc/zabbix/zabbix_agentd.conf
Timeout=30
Timeout default is 3s so if we run
time ping -W1 -c2 8.8.8.8
see maybe it takes more than 3s so you got error :
ZBX_NOTSUPPORTED
It can be anything. For example timeout - default timeout is 3 sec and ping -c4 requires at least 3 seconds, permission/path to ping, not restarted agent, ...
Increase debug level, restart agent and check zabbix logs. Also you can test zabbix_agentd directly:
zabbix_agentd -t checkip[]
[m|ZBX_NOTSUPPORTED] [Timeout while executing a shell script.] => Timeout problem. Edit zabbix_agentd.conf and increase Timeout settings. Default 3 seconds are not the best for your ping, which needs 3+ seconds.
If you need more than 30s for the execution, you can use the nohup (command..) & combo to curb the timeout restriction.
That way, if you generate some file with the results, in the next pass, you can read the file and get back the results without any need to wait at all.
For those who may be experiencing other issues with the same error message.
It is important to run zabbix_agentd with the -c parameter:
./sbin/zabbix_agentd -c zabbix_agentd.conf --test checkip["8.8.8.8"]
Otherwise zabbix might not pick up on the command and will thus yield ZBX_NOTSUPPORTED.
It also helps to isolate the command into a script file, as Zabbix will butcher in-line commands in UserParameter= much more than you'd expect.
I defined two user parameters like this for sync checking between to samba DCs.
/etc/zabbix/zabbix_agentd.d/userparameter_samba.conf:
UserParameter=syncma, sudo samba-tool drs replicate smb1 smb2 cn=schema,cn=configuration,dc=domain,dc=com
UserParameter=syncam, sudo samba-tool drs replicate smb2 smb1 cn=schema,cn=configuration,dc=domain,dc=com
and also provided sudoer access for Zabbix user to execute the command. /etc/sudoers.d/zabbix:
Defaults:zabbix !syslog
Defaults:zabbix !requiretty
zabbix ALL=(ALL) NOPASSWD: /usr/bin/samba-tool
zabbix ALL=(ALL) NOPASSWD: /usr/bin/systemctl
And "EnableRemoteCommands" is enabled on my zabbix_aganetd.conf, sometimes when I run
zabbix_get -s CLIENT_IP -p10050 -k syncma or
zabbix_get -s CLIENT_IP -p10050 -k syncam
I get the error ZBX_NOTSUPPORTED: Timeout while executing a shell script.
but after executing /sbin/zabbix_agentd -t syncam on the client, Zabbix server just responses normally.
Replicate from smb2 to smb1 was successful.
and when it has a problem I get below error on my zabbix.log
failed to kill [ sudo samba-tool drs replicate smb1 smb2 cn=schema,cn=configuration,dc=domain,dc=com]: [1] Operation not permitted
It seems like it is a permission error! but It just resolved after executing /sbin/zabbix_agentd -t syncam but I am not sure the error is gone permanently or will happen at the next Zabbix item check interval.
I am having trouble getting the following startup-script to execute properly when launching a Compute Engine Instance (GCE).
#! /bin/bash
setup vncserver
vnc4server -geometry 1440x900 :1
export DISPLAY=:1
echo "completed"
The script is read by GCE but does not execute the commands and the log shows blank lines with a message in-between which is the key to the problem but I cant seem to solve it.
Log shows the following:
Feb 3 09:15:33 simpleapache3 startupscript: Running startup script /var/run/google.startup.script
Feb 3 09:15:34 simpleapache3 startupscript:
Feb 3 09:15:34 simpleapache3 startupscript: You will require a password to access your desktops.
Feb 3 09:15:34 simpleapache3 startupscript:
How do I get around the "You will require a password..." section?
Tried:
I tried adding in a password inside the script like this but no luck...
#! /bin/bash
#setup vncserver
vnc4server -geometry 1440x900 :1
myPassword123
export DISPLAY=:1
echo "completed"
Notes:
I have got VNC4SERVER already installed on the persistent disk I am adding.
If I ssh into the instance and run the commands manually they work perfectly and I am not asked for a password.
Any help would be greatly appreciated...
I suspect this is because the startup scripts run as root rather than your user.
This script works for me:
#! /bin/bash
echo "I am: " `whoami`
sudo -u briandorsey DISPLAY=:1 vnc4server -geometry 1440x900 :1
echo "completed"
Replace briandorsey with your username.
Also, don't forget to create a firewall rule to allow vnc traffic. This can be done via the Console or with gcutil:
gcutil addfirewall vnc2 --allowed=tcp:5901
This will allow traffic on port 5901 to all virtual machines in your project. See the firewall docs for information on how to limit access further.