On Jenkins configuration page in section "Jenkins URL" I've set this option to "http://name_of_my_machine.jenkins:8080/"
Usually I open jenkins by: "http://localhost:8080/"
But this new option did not work for me - Jenkins does not open. So what does it mean?
Jenkins can't determine its URL on its own. So when it needs to create full links that's where the URL is taken from. In general even if you specify the wrong URL it should not affect the way Jenkins works in any significant way. It certainly has no effect on the URL that you enter in your browser to connect to Jenkins server. You can either specify http://localhost:8080 (when connecting from your machine and assuming that you started Jenkins on port 8080) or http://<machine_hostname>:8080 when connecting from anywhere.
So no matter what you specify it has no effect on connecting to Jenkins, therefore http://name_of_my_machine.jenkins:8080/ won't work, as .jenkins is not part of the name (e.g. ping name_of_my_machine.jenkins won't find the host).
Whenever Jenkins needs to create a URL that points to itself, Jenkins picks it up from the "Jenkins URL" setting in the global configuration.
Jenkins could try to guess the URL by e.g. getting the hostname and combining that with the port it is running on. But sometimes the hostname is not the same as the DNS name. And what if you have placed a front-end or proxy before Jenkins that e.g. terminates SSL connections and you would really like people to use Jenkins at https://company.com/jenkins/. Jenkins running in port 8080 cannot know about the front-end. The only reliable way for Jenkins to get the URL to itself is for an administrator setting it in Jenkins configuration.
Jenkins needs to know it's own URL when it is creating links that point back to itself. It does this e.g. when it sends out emails containing direct links to build results. Also, if you have a JNLP type slave, the slave initiates the connection to the master and the master returns a message which contains a link back to Jenkins for downloading the slave agent software.
Do you mean the option in the E-mail configuration section? This is only to generate the links in emails Jenkins sends (see the help for the option -- click the symbol with the question mark). If after changing it you cannot access your server anymore, it must be something else.
Related
I'm new to Jenkins and I'm not sure about what info should in --> Server "[ ]"
Should i paste the Jenkins url ?, my computer ip ?, ipv4, ipv6?
I'm getting an error probably because that configuration is not ok.
I try to paste url Jenkins localhost info but I'm getting error.
I presume you mean on /pluginManager/advanced, "Manage Jenkins > Manage Plugins > Advanced. HTTP Proxy Configuration | Server".
If you can click on "Check Now" on the Plugins page it it updates the plugins list, then you don't need to do anything.
Assuming you are behind a firewall, enter a Proxy Configuration (1) value. It can be an IP address, a hostname or a PAC file. Port is necessary, other fields optional as needed.
]
After adding a value, click on the "Advanced" button; there is a Validate Proxy option. Make sure the "Server" value omits the "http://", but the "Test URL" includes the full url (it can be any external url you choose; eg: https://google.com or https://github.com).
The Server (?) help option also notes:
If your Jenkins server sits behind a firewall and does not have the
direct access to the internet, and if your server JVM is not
configured appropriately (See JDK networking properties for more
details) to enable internet connection, you can specify the HTTP proxy
server name in this field to allow Jenkins to install plugins on
behalf of you. Note that Jenkins uses HTTPS to communicate with the
update center to download plugins.
Leaving this field empty means
Jenkins will try to connect to the internet directly.
If you are unsure about the value, check the browser proxy
configuration.
Note: There is a field under the configure "Manage Jenkins > Configure System" page for:
Jenkins Location
Jenkins URL "[ ]"
That would be your localhost name / IP if necessary
This value is used to let Jenkins know how to refer to itsel
(1) No idea why this wiki page was not migrated to the new wiki.
I recently started working with Jenkins for CI/CD for ASP.net applications.
I have built a Jenkins server and created the required jobs with appropriate plugins.
My Jenkins is configured with localhost:8080 initially.
Later I was asked to give a meaningful host name (xyz.com), so that with in the organization all IT employees can access without logging in to the server to access Jenkins.
I have already tried to change the configurations under manage Jenkins -> Configure -> Jenkins Location (Jenkins URL), changed it to "localhost:80" and added "127.0.0.1 xyz.com" in the host file.
I have changed the port number in Jenkins.xml file even.
It didn't work for me because I had to browse "xyz.com:8080"
My final result should be "xyz.com" and should be accessible for the entire team.(I will take care of DNS).
Any help would be appreciated.
Thanks in advance.
I am not getting option to install plugins in Jenkins. Instead getting two options Configure Proxy and Skip Plugin Installations.
Might be worth checking - I did a mistake myself and spent a day checking.
Just mention the IP, and not the complete address in Server field in jenkins while configuring proxy.
So, let us suppose your proxy is http://x.x.x.x:8080 - so just put x.x.x.x in server field.
Navigate to C:\Windows\System32\config\systemprofile\AppData\Local\Jenkins.jenkins,
Modify "hudson.model.UpdateCenter.xml" file by changing the URL property to "http"
Finally Open CMD with Admin privilege and run.
net stop jenkins
net start jenkins
I have already configured the java enviroment and installtion
path
This is a duplicate question from Server Fault: Answer Here
Java Web Start utilizes TCP so it has to be enabled and configured in Jenkins...
Login to Jenkins as admin
Manage Jenkins > Configure Global Security > TCP port for JNLP agents
Do yourself a favor and pick a static port assignment...
As of Jenkins version 2.176.3, there is option enabled when "Launch agent by connecting it to the master" which is same as "launch agent via java web start" once you enable the "Manage Jenkins => Configure Global Security => Agents => TCP port for inbound agents" as mentioned above.
e.g. Fixed: 50000
Make sure that you've enabled a JNLP port in Manager Jenkins -> Configure Global Security. If no JNLP port is specified, then the JNLP slave option will not appear.
I had similar issue after updating my Jenkins, I then used "Launch agent by connecting it to the master" method to launch and my port "TCP port for inbound agents" under
- Manage Jenkins => Configure Global Security => Agents => TCP port for inbound agents got changed to 8888. I have updated it back to 50000 and that resolved the issue. Hope it helps.
On some systems I used to get a button to download the agent's JNLP. On my new linux mint system, I instead get the "JNLP not available" message. So was lost as to where to get the JNLP file. However, looking in the command below I saw the URL for downloading it, eg:
http://127.0.0.1:8080/computer/build_slave/jenkins-agent.jnlp
Go to the slave machine, paste the URL in the browser to download it!
This might also be due to missing permissions for the user trying to setup the agent via java web start, at least that was the case in my scenario;
To verify this, try to download the jnlp directly; URL would be of the form [jenkins url]/computer/[agent name]/slave-agent.jnlp, if there is a permissions issue you will get something along the lines of:
Access Denied
xxxx is missing the Agent/Connect permission
I am trying to set a new Jenkins instance (version 1.67) on to a Windows Server 2012 r2.
I am trying to configure a custom URL instead of using
localhost:8080
etc..
I have set Jenkins URL as
NewServer.domainname.com
But I cannot access it via that url, I get presented with a message "Remote Web Access is turned off" it only allows me to connect when I follow the URL with the port number;
NewServer.domainname.com:8080
I am sure that Remote web access is completely different from what my goal is.
By default, Jenkins launches its own built-in webserver, listening on port 8080.
Changing the URL in the Jenkins configuration does not change the port that the running webserver listens on, but rather the URL that is shown within the UI, or in emails sent to users etc.
In order to access Jenkins at just NewServer.domainname.com (i.e. running on port 80), you would first have to disable Windows Remote Web Access, which is currently occupying port 80.
You would then need to stop Jenkins and start it again with the flag --httpPort=80; these options are documented on the Jenkins wiki.
If Jenkins was started as a Windows Service, you can edit the jenkins.xml file as shown in these answers.
Just wanted to say, after setting Jenkins.xml to run on port 80, and then via the Jenkins web interface using
'install as service'
I found that this process seemed to create a new jenkins.xml along with the default httpPort which is stored within the Jenkins.war.
I get around this I installed as a service, ensured that the service was not set to start on start up. Rebooted the machine
On start up I re-edited the jenkins.xml httpPort value back to 80. Started the service and now running very happy!