I have installed ngnix on ubuntu 20.04 . But when i am giving command sudo systemctl start ngnix . I am facing an error
Failed to start ngnix.service: Unit ngnix.service not found.
Please help me out through this problem.
It's called nginx, not ngnix. So you need to start it as sudo systemctl start nginx (note the spelling).
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I am trying to install opnenstack-nova and after i confing /etc/nova/nova.conf and run command:
systemctl start libvirtd.service openstack-nova-compute.service
it doesn't finish and show anything.
how to solve it???
image
When I try to start the apache web server it throws an exception that says that it doesn't recognize the variables in envvars
I included an image for you to see, I believe my envvars file is fine.
sorry if this is a newbie's question but I am a newbie in apache.
this is the image, top part is the exception, bottom part is the envvars file
Could you check if "/var/run/apache2" folder is not missing?
If yes, you can try creating the folder:
mkdir /var/run/apache2
After that, please run the following command:
source /etc/apache2/envvars
Lastly, you can restart your apache:
sudo systemctl stop apache2
sudo systemctl start apache2
or
sudo systemctl restart apache2
i have been trying to open jupyterlab from my dataproc cluster. i had been working on it last week and there seemed to be some issue with the kernel. so i signed out of jupyterlab and stopped the cluster. then i tried to open jupyterlab again from the link under web interfaces in cluster detail. however, since last wednesday, everytime i try this i get a 500 or 502 error. the error says "500. That's an error. That's all we know."
i'm not sure what to do here. i googled the issue and couldn't find anything that would help.
You can SSH into the master node with gcloud compute ssh <cluster-name>-m, then check the status of the following 3 services:
systemctl status jupyter
systemctl status knox
systemctl status google-dataproc-component-gateway
Restart them if needed:
sudo systemctl restart jupyter
sudo systemctl restart knox
sudo systemctl restart google-dataproc-component-gateway
Also, check the Knox log at /var/log/knox/gateway.log.
couchbase service stopped , so i started it manually by exec following command:
sudo service couchbase-server start and got response
Failed to start couchbase-server.service: Unit couchbase-server.service is masked.
I have ubuntu 16.04LTS and couchbase 5.1
you can unmask your service
sudo systemctl unmask couchbase-server
sudo systemctl start couchbase-server
Go to $CouchbaseHome and run following command to start and stop manually
Start
./bin/couchbase-server \-- -noinput -detached
Shutdown
./bin/couchbase-server -k
I followed the steps on debian - stable installation instructions verbatim.
However, when I run the last step I get:
cammil#cammil-desktop:~$ neo4j start
neo4j: command not found
How do I resolve this?
You can start the neo4j server with:
service neo4j-service start
But, if you are able to access localhost:7474, then the server has already been started. You can check the status with:
service neo4j-service status
Or if you want to stop it:
service neo4j-service stop
You probably don't have . in your PATH, so you need to do ./neo4j start.
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