I'm learning devops and working on a project to install jenkins on an aws ec2 that is on a private subnet. Following the digital ocean doc, I was able to install it successfully and the jenkins service is running.
https://www.digitalocean.com/community/tutorials/how-to-install-jenkins-on-ubuntu-20-04
I have an ALB setup to access Jenkins, but the target group is failing with the health check 403.
When I try to curl on http://localhost:8080 on the same ec2 host or from the bastion host, I get an "Authentication required" error, and doing curl with -I gives me HTTP/1.1 403 Forbidden.
I've spent a lot of time trying to get help on Google, but nothing worked and I'm kinda stuck here.
Can someone please point me in the right direction?
Try using the /login instead.
curl -v http://localhost:8080/login
Related
My kubernetes environment is running on kind while my jenkins environment is running as a docker instance. I tried watching all of the youtube tutorial regarding this and have followed all of the steps carefully but still, I can't seem to get past this very specific error. This error doesn't appear to any of the youtube tutorial I watched and it's very frustrating.
Error testing connection https://127.0.0.1:53883: java.net.ConnectException: Failed to connect to /127.0.0.1:53883
The URL is from running the command: kubectl cluster-info
I spent the whole day trying to pull an image on my MacBook through a corporate HTTP proxy, with no luck.
It is an authenticated proxy, of the form: http://username:password-with-special-characters#proxy.domain:8080
The http_proxy and https_proxy variables are set in my .zshrc.
The proxy details are set in the system's preferences.
When I try to docker pull hello-world without altering proxy settings in the Docker for Mac UI, I got:
Error response from daemon: Get https://registry-1.docker.io/v2/: Service Unavailable
When I also set the proxy through the Docker for Mac UI I got:
Error response from daemon: Get https://registry-1.docker.io/v2/: Proxy Authentication Required
I can curl https://registry-1.docker.io/v2/ directly on the terminal, and get back a 200.
I tried with and without URI encoding the special characters in my password, doesn't change a thing.
I used to have some issues with the same proxy on a Linux machine, but got it to work by messing with systemd. On macOs, I don't know if I can do something similar.
Help would be very much appreciated.
Thanks in advance !
For those who had this error, it was because of a bug between Cisco AnyConnect and Docker. This bug has been fixed with Docker for Mac 3.4.0.
By following the tutorial below I am attempting to use slash commands in Slack to trigger a build in Jenkins. My jenkins instance which is on an EC2 is utilizing the user's API token to authenticate the POST command from slack.
When I do the curl command locally, it successfully triggers the build, the command is similar to this:
curl -X POST http://slack:c1c54d626f6a11fbc98ed795ec8862bc#10.11.12.13:8080/job/TEST_ATOMATION_GURU_SLACK_JOB_DEMO/build
However when I try to execute the command in slack via a slash command I get: Darn - that slash command didn't work (error message: 403_client_error).
Tutorial I am following: http://www.testautomationguru.com/jmeter-selenium-webdriver-how-to-trigger-automated-test-execution-from-slack/
I have also tried this tutorial with the same result:
https://sonnguyen.ws/how-to-trigger-a-jenkins-build-from-slack/
I also saw this stackoverflow post but it did not help: Using Slack to start Jenkins builds
Things I have tried:
- Opening up the security groups
- In jenkins selecting “Allow anonymous read access”
- In Jenkins deselecting “Prevent Cross Site Request
Forgery exploits”
Any help or guidance would be much appreciated.
enter image description here
The good news is that the setup should work - I also have a Slack slash command triggering a jenkins job, so the issue will be somewhere in your setup.
I see in your curl example you are accessing jenkins on a private IP. I would start there as if you are using the same private IP in the Slack slash command, there is no way Slack would be able to access your Jenkins instance. If you are using private IP in the slash command, I would recommend attaching an Elastic IP to your EC2 instance (assuming it lives in public subnet etc) and then try again the slash command but on the Elastic IP this time.
you can use ngrok for the tunneling and then you should be able to trigger that.
note: Ensure that the URL you are giving in the section should be able to trigger the build if run manually using the curl -X POST command.
I am getting below error when trying to access jenkins pipeline url. I tried clearing the browser cache, tried different browsers etc but no luck. the same pipeline url works fine for other users but not for me. any ideas why it throwing 404 error for me? many thanks!
HTTP ERROR 404
Problem accessing /job/jenkins/job/test/. Reason:
Not Found
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After loging in as an administrator, use the url http://localhost:8080.
It initially takes to the url that says jenkins in it's name, which will not work. The URL you want to access is http://localhost:8080
Also if you have a different port binded you can try to call the url as http://[ip]:[port]/jenkins
If you get such error like it was mentioned above you should access through the URL "http://localhost:8081/jenkins/", but not only "http://localhost:8081".
Btw my port is 8081 because of the circumstance that my 8080 port is already used.
Have a good day!
There can be probably one of these reasons :
You do not have the access to the job.
You do have access to the job but you are not logged in . Try to login to jenkins in another window and check remember me on this computer , then open that url.
You are trying to access it from another server which is not whitelisted from the jenkins master server ,i.e it is not allowed access.
These are the best guesses I coud get .If these do not work then someone needs to manually check the url you are entering and other environment related issues themselves.
There is a common mistake that most of the people making.(while running jenkins.war from CMD)
Please ensure that your tomcat server is 'up and running' locally.
Follow these steps.
try restarting your jenkins service with $sudo service jenkins restart
I have faced the same issue and identified JIRA and Jenkins are installed on same port 8080. Jenkins service is starting first because of that JIRA was not working. Then I have edited Jenkins.xml file with port 8081 and restarted the services it was working fine.
When I ran jenkins.war from CMD, I faced the same issue. Practically when you run jenkins.war from CMD, localhost:8080 is where jenkins is available. But if you run the startup.bat file, then the path you have set, say, localhost:8080/jenkins will work.
If you are using a hook this error occurs. This is a known issue in GIT showing 404 error. Way around of the above said problem is to use the NIC ID instead of using "localhost".
I used a docker container to start jenkins locally for a test purpose.
Here is the cmd: docker run -p 8080:8080 -p 50000:50000 jenkins reffered to official documentation: https://hub.docker.com/_/jenkins?tab=description.
After started the container, I browsed into http://localhost:8080 and got
HTTP ERROR 404
Problem accessing /job/jenkins/job/test/. Reason:
Not Found
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I just removed exposing the JNLP port which is 50000
And the command to start docker was: docker run -p 8080:8080 jenkins
And now, I was able to browse the application at http://localhost:8080 without not found error.
Thanks
I am trying to trigger jenkins build whenever there is a push to GitLab.
I am referring to https://github.com/jenkinsci/gitlab-plugin.
When I test the connection for webhook it shows execution expired.
I am using:
Jenkins ver. 2.60.1
GitLab version 9.4.0-rc2-ee
Git lab plugin 1.4.6
The exact error message, clicking "Test setting" from GitLab:
We tried to send a request to the provided URL but an error occurred: execution expired
As mentioned in issue 128:
This looks and sounds like a configuration or network error.
Maybe your machine is not publicly available on the webhook address (firewall etc).
For instance, on Digital Ocean server, you would need to open up the port (mentioned in git-auto-deploy.conf.json) in the firewall:
sudo ufw allow 8866/tcp
Double-check though what you put in Manage Jenkins > Configure in term of Gitlab information (connection name, host url, credentials), as mentioned in jenkinsci/gitlab-plugin issue 391.
See GitLab Integration Jenkins: Configure the Jenkins server
It means issues in between jenkins server and gitlab or github server.
Like what I did:
I have set my local-IP:port/project/jenkins_project_name
http://192.168.1.21:8080/project/jenkins_project_name
and set the above URL in the gitlab webhook, it shouldn't work - right?
Because it's an IP that's private and not routable.
SO later I realized and set the public-IP and then hook worked.
http://public_IP:8080/project/jenkins_project_name
Note: To routable public-IP, you should expose port in your router [e.g. 8080 was for me or anything want ]
Hope this works.
I have faced the same issue.
In my case Jenkins is running in an AWS EC2 instance. I have resolved the issue by whitelisting the Public IP addresses of Gitlab on port 443 into the instance security group.