Failed to start Nexus oss on redhat linux server 6.5 - nexus

I have installed nexus 2.8.1-01 on linux server 6.5, but when I try to start it's got the following result. Would someone help me?
[uszbwp6#ANV-WFM-DLAPP01 nexus-2.8.1-01]$ ./bin/nexus start`
Starting Nexus OSS...
Failed to start Nexus OSS.
Thanks,
bob

You shouldn't run Nexus as root, this is not recommended.
I'm guessing that the files in the Nexus installation have incorrect permissions?
Try changing the owner of the Nexus installation files to your user ID (or whatever user ID is supposed to run Nexus).

I had faced the same issue. I initially ran nexus as a root user and i saw a warning "not advised to run as root user". So I stopped the nexus service, tried to restart with nexus user but it didn't restart. The only reason is, when I first ran the nexus as root user, it created some cache files and log files as a root user.
Our nexus installation is on /opt and our nexus db is on /mnt
Solution:
chown -R nexus:nexus /opt/nexus
chown -R nexus:nexus /mnt/nexus/
Afterwards, I restarted nexus and boom, it worked.

Related

Vagrant / VirtualBox (Mac OS): The SSH command responded with a non-zero exit status error

I'm running Vagrant version 2.2.19 with VirtualBox version 6.1 on Mac OS Monterey version 12.3.1.
When running vagrant up or vagrant up --provision, I'm receiving the following error:
The SSH command responded with a non-zero exit status. Vagrant
assumes that this means the command failed. The output for this command
should be in the log above. Please read the output to determine what
went wrong.
Upon checking the logs, in provisioner-utility-source-core.log I can see the following log:
[0;38;5;2m ▷ Running the [0m[1m[0;38;5;5m'utility-source-core'[21m[0;38;5;2m provisioner...[0m[0m[0m
[0m[39m[2m* Updating the "core" utility on the "master" branch...[21m[0m
fatal: unsafe repository ('/srv/provision/utilities/core' is owned by someone else)
To add an exception for this directory, call:
git config --global --add safe.directory /srv/provision/utilities/core
[0;38;5;9m ! The [0m[1m[0;38;5;5m'utility-source-core'[21m[0;38;5;9m provisioner ran into problems, the full log is available at [0m[1m[0;38;5;5m'/var/log/provisioners/2022.04.18_18-32-31/provisioner-utility-source-core.log'[21m[0;38;5;9m. It completed in [0m[1m[0;38;5;5m0[21m[0;38;5;9m seconds.[0m[0m
In the above, can see a fatal error:
unsafe repository ('/srv/provision/utilities/core' is owned by someone else)
However, I cannot see any resources online to solve the above fatal error.
What I've tried:
Running vagrant halt then vagrant destroy and then vagrant up to create the box again, and then running vagrant up to see if it solves things (get the same error)
Added Git SSH (using this guide) in case it was a Git error
Uninstalled and then reinstalled VirtualBox
Cleared out IPs from /etc/hosts/hosts, and then ran vagrant up again, to see if there were any conflicts.
Have tried running git config --global --add safe.directory /srv/provision/utilities/core, then re-ran vagrant up --provision - but it does nothing.
Note: I have allowed oracle permissions via security and privacy and have rebooted my machine so it's in effect.
Is there any way to get VVV running again?
This is a known issue that was fixed in newer versions of VVV. Update to at least VVV 3.10.1 and re-provision.
If it is still happening despite updating to newer VVV, raise a GitHub issue.
I'm the VVV project lead, usually when we see these issues we fix them, this isn't something you should need to fix yourself. But if you use stackoverflow to report bugs we don't see it. Either raise a GitHub issue or ask in the VVV slack.
https://github.com/Varying-Vagrant-Vagrants/VVV/issues/new/choose

How to became superuser on AWS EC2 WordPress Site

I want to install SSL on AWS EC2 WordPress Site,
I have tried this:
bitnami#ip-172-24-0-191:/opt/bitnami/apache2/htdocs$ sudo /opt/bitnami/bncert-tool
An updated version is available. Would you like to download it? You would need to run it manually later. [Y/n]: Y
The tool will exit now. To run the updated version run the following command:
/opt/bitnami/bncert-tool
bitnami#ip-172-24-0-191:/opt/bitnami/apache2/htdocs$ /opt/bitnami/bncert-tool
but I have this error:
Error: There has been an error.
This installer requires root privileges. Please become superuser before
executing the installer
Press [Enter] to continue:
All you have to log in with AWS root user first.
Installing SSL depends on your web panel like cpanel, cyberpanel, directadmin etc.
If you have bought a SSL then install it via panel first.
If you want to install SSL via SSH access, Be sure your SSH port is open and the credentials are correct.
Your error is showing because of not root user access.
Thanks.

AWS CodeDeploy deployment failed at event ApplicationStop

I am trying to set up auto-deployment from GitHub to AWS, using EC2.
I set Role with CodeDeployServiceRole auto policy
After following the Tutorial: Use AWS CodeDeploy to Deploy an Application from GitHub, my deployment fails at the ApplicationStop event, after trying for couple of minutes with error code HEALTH_CONSTRAINT. I'm not sure how to troubleshoot the issue/where to look.
These are few hints of how you can navigate your way
Logs as mentioned in comments in /var/log/aws/codedeploy-agent
As AWS support recommend you can add for one time --ignore-application-stop-failures so it will skip that step in case it failed last time and see، because the application stop Lifecycle event uses the appspec file from the last successful build so if that one is corrupted somehow this step will fail in the following builds
(not recommended) you can delete the file, that CodeDeploy uses to keep track of the previous successful deployment in the following path /opt/codedeploy-agent/deployment-root/deployment-instructions/
Check the latest logs at /var/log/aws/codedeploy-agent
If your deployment is failing at ApplicationStop event, then most likely the issue is your EC2 instance does not have the necessary permissions to get the artifacts from S3 bucket.
Your EC2 instance must have an IAM role attached which gives it enough permissions to download the artifacts from S3 bucket
Your EC2 must be started with an IAM role. So you may have to reboot your instance after attaching the role to it.
From your configuration, looks like you have provided permissions to CodeDeploy to perform certain actions on your EC2. You may want to check if your EC2 also has the necessary permissions to download packages from S3 bucket.
Another reason for this error is that the CodeDeploy Service is not running on your machine. On Windows machines, Code Deploy Service terminates sometimes, and as a result, the deployment is not downloaded on the machine. Nothing appears in the logs either.
Run services.msc and check the code deploy agent service. If it is not running, start it and retry the deployment.
I had the same issue and solved it by solving codedeploy-agent that wasn't working on my EC2 instance.
sudo service {httpd/apache2} status
Something might have cause the agent not to run properly
Hope it will help
I had the same issue. You also need to make sure that your EC2 instance has code-deploy-agent installed.
Follow the below aws guide. It worked for me.
AWS guide to install code agent in linux server
Check if the codedeploy-agent is running.
sudo service codedeploy-agent status
if not running then use below command to run
sudo service codedeploy-agent start
If you are using aws Windows server, check the logs at :
C:\ProgramData\Amazon\CodeDeploy\log\codedeploy-agent-log.txt
AWS Docs
To check if the codedeployagent running in windows. Open powersheel command window and run these command.
powershell.exe -Command Get-Service -Name codedeployagent
Better to stop and start again.
powershell.exe -Command Stop-Service -Name codedeployagent
powershell.exe -Command Start-Service -Name codedeployagent
Or Restarting also works
powershell.exe -Command Restart-Service -Name codedeployagent
For me I had to uninstall the codedeployagent on windows by uninstalling and deleting old files of codedeploy.
Run the below command in powershell one by one to uninstall.
wmic
product where name="CodeDeploy Host Agent" call uninstall /nointeractive
exit
After this delete the codedeploy folder at this location.
C:\ProgramData/Amazon/CodeDeploy/
Now install codedeployagent on windows.
Start the codedeployagent again.
powershell.exe -Command Start-Service -Name codedeployagent

Sonatype Nexus only starting in console mode

I installed Nexus 3.6.0-02 on Redhat 7.4.
I am able to get Nexus to start in console mode by running the command: ./nexus run
If I try and start nexus as a service per the following documentation, nothing happens.
https://help.sonatype.com/display/NXRM3/Run+as+a+Service
If I run the command ./nexus start, the application does not start and there is nothing written into any nexus logs indicating why it failed to start.
The install and sonatype-work directories are all owned by the user who I have configured Nexus to run as.
Any ideas as to where to look or troubleshoot to figure this problem out.
Thanks
In my case I am using nexus 3 . I resolved this by deleting lock file placed inside nexus3 folder of sonatype folder and restart it by nexus start command.
Make sure the "run_as_user" configured in $install_dir/bin/nexus.rc has permissions to write to the installation directory and the work directory. And make sure they have a login shell, that is required for the startup script to work.

Restart shiny-server on centos

I have shiny-server installed and I am using it to host my shiny apps installed on a centos server. I'm pretty sure its installed correctly because it was working as expected until the server crashed, since the server recently crashed I need to restart shiny-server.
I tried both:
sudo systemctl restart shiny-server
and
sudo systemctl restart shiny-server.service
but I get the error message:
Failed to issue method call: Unit shiny-server.service failed to load: No such file or directory.
However I can see the file shiny-server.service in the folder I am running the command from. Does anyone know why this is or what I should do to fix it?
If it helps the shiny-server.service file is located in the directory /opt/shiny-server/config/systemd/shiny-server.service
It sounds like the service has not been registered.
Try;
chkconfig --list shiny-server it should return something like;
shiny-server 0:off 1:off 2:off 3:on 4:off 5:off 6:off
If nothing comes back then you need to chkconfig --add shiny-server then re run the above commands to verify its registered, then you should be able to access it via the service manager.
I'm presuming the service is called shiny-server but if not replace it with the correct name.
This link may also provide some additional info.
I know this question was asked a long time ago but it took me a long time to figure out and I can probably save someone some time.
Shiny had installed in /optdirectory and the shiny-server.service is located at: opt/shiny-server/config/systemd/shiny-server.service
What I did was copy it to systemd: cp /opt/shiny-server/config/systemd/shiny-server.service /etc/systemd/system/
The I just started it the normal way: sudo systemctl start shiny-server,service
Hope that helps!
The answer ended up being that I needed to create a link between the shiny-server.service file that was in my shiny-server/config folder and the /systemd/system/multi-user.target.wants folder.
Updating that link allowed me to use systemctl to restart the shiny server correctly.

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