PC on which I have installed IoT Edge EFLOW is behind proxy.
I have tried to setup proxy as I did for standardalone Ubuntu instance i.a. by setting proxy for ubuntu (export https_proxy="...") and then setting proxy for docker.
Unfortunately I have noticed proxy settings are removed after each time host system has been restarted.
Futhermore I cannot modify docker configuration file via powershell and SSH connection.
When I try to open any file via nano or vim the powershell window is empty I cannot type anything, I can only exit by closing powershell window.
Is there any particular steps to do to start using EFLOW behind proxy?
Make sure you follow this: Configure deployment manifests "Once your IoT Edge device is configured to work with your proxy server, you need to continue to declare the HTTPS_PROXY environment variable in future deployment manifests."
As part of our remote automation scripts, we've added the EFLOW Autodeploy scripts that will let you deploy the EFLOW VM and all the configurations (including Proxy) just by declaring a JSON file.
Thanks,
Francisco
I am trying to deploy my project to IIS using TFS Winrm:IIS web app deployment task. I am new to this.
I am getting the following error'
"Deployment failed on machine xxx with following message : System.Management.Automation.Remoting.PSRemotingTransportException: Connecting to remote server xxx failed with the following error message : The client cannot connect to the destination specified in the request. Verify that the service on the destination is running and is accepting requests. Consult the logs and documentation for the WS-Management service running on the destination, most commonly IIS or WinRM. If the destination is the WinRM service, run the following command on the destination to analyze and configure the WinRM service: "winrm quickconfig". "
I was able deploy the project to the same remote server using TFS Winrm: windows machine file copy task which is the prior step for web app deployment to IIS. Winrm service is running and when it type the "winrm quickconfig i am getting "winrm is already been configured".
What am i missing here ? please suggest. Thanks in advance.
The Winrm:IIS task is actually MSDeploy from Machine A to Machine B so for this to work you need to install MSDeploy on Machine B. You should then be ok to deploy from Machine A. Check this article out for more information and to see if you have all the pre-requisite. Also these articles have a bit more info.
https://learn.microsoft.com/en-us/azure/devops/pipelines/apps/cd/deploy-webdeploy-iis-winrm?view=azure-devops
https://marketplace.visualstudio.com/items?itemName=ms-vscs-rm.iiswebapp
The issue was resolved when i enable remote powershell remoting my remote machine using the command Enable-PSRemoting –force
I have a fresh install of Jenkins 2.32.2 on Ubuntu.
Opened a browser on the instance and get to a page titled Offline, with the message "This Jenkins instance appears to be offline" and offers options to "Configure Proxy" or "Skip Plugin Installation"
The machine clearly isn't offline as I just used the internet connection to do the installation.
I also had a previous installation, done exactly the same way, that was working.
I removed the previous installation as Pipelines wouldn't work and Google told me it was because of JDK 9. So I removed all the JDK/JRE installations as well as jenkins, fresh installed JDK 8 only, installed Jenkins, and got to here.
Jenkins has worked on this box in the past so what makes it think it is offline?
Update: Found a log file /var/lib/jenkins/logs/tasks/Download metadata.log
and it starts with a message FATAL: Connection refused (Connection refused)
I would think that indicates that the internet connection is OK, but something else is stopping it getting data?
Update: Based on other research I checked the Update Site in the Plugin Manager. This is listed as http://updates.jenkins-ci.org/update-center.json and, from the command line a wget of this file succeeds. So most definitely not a connection issue. Worked with both http and https, jenkins works with neither.
In my case, it has something to do with SSL. I manage to fix it by editing /var/lib/jenkins/hudson.model.UpdateCenter.xml and change url to use http instead of https.
Restart jenkins and reload the website, it no longer shows offline.
For macOS users:
Step -1: Edit /Users/Shared/Jenkins/Home/hudson.model.UpdateCenter.xml and change url to use http instead of https.
Step -2: Restart jenkins (for instance by going to http:localhost:8080) and reload the website
Step -3(Optional): If it asks for user and password and if you don't remember creating one; default user is admin and copy the password from
sudo cat /Users/Shared/Jenkins/Home/secrets/initialAdminPassword
credits - #Alex in this post and #Tuan Pham here and #Joe Walsh for the comment on macOS directory path
There is something wrong with the internet connection of update center.I have met the same situation with Jenkins installed on macOS.
You can try to modify the hudson.model.UpdateCenter.xml file.
Jenkins installed with .pkg package on macOS,the file path is:
/Users/Shared/Jenkins/Home/hudson.model.UpdateCenter.xml
Jenkins installed by Homebrew on macOS,the file path is:
/Users/{username}/.jenkins/hudson.model.UpdateCenter.xml
Open the file:
<?xml version='1.1' encoding='UTF-8'?>
<sites>
<site>
<id>default</id>
<url>https://updates.jenkins.io/update-center.json</url>
</site>
</sites>
You can try to change https://updates.jenkins.io/update-center.json to:
http://updates.jenkins.io/update-center.json
or
// If you are in China or near China area,https and http are both OK.
https://mirrors.tuna.tsinghua.edu.cn/jenkins/updates/current/update-center.json
And then you can restart Jenkins by:
//loading the URL to restart Jenkins.
http://localhost:8080/restart
or
// Use Homebrew command to restart Jenkins if you installed Jenkins LTS version by Homebrew.
brew services restart jenkins-lts
in my case (macOS), updating jdk to 8 and reinstall jenkins solved the problem.
The issue is that for some reason Jenkins doesn't have access to the certificates chain of the Jenkins updates service.
On Ubuntu 18.04 I had this issue and the next links and instructions helped me to start Jenkins properly without modifying the default url or using a proxy of some sort.
Installing a new JDK 8(u101+) with JAVA_HOME should do the trick like at:
https://www.digitalocean.com/community/tutorials/how-to-install-java-with-apt-on-ubuntu-18-04
is making sure that Lets Encrypt certificates are installed and available on the OS/SYSTEM.
To test it you can use the instructions at:
Does Java support Let's Encrypt certificates?
And to install manually if required the Let's encrypt root chain using the next script:
https://gist.github.com/Firefishy/109b0f1a90156f6c933a50fe40aa777e
I also faced this issue i.e. This Jenkins instance appears to be offline on windows 10.
Below are the steps I followed to solve it:
Navigate to the Jenkins Home Directory.
For me, the default home directory is: C:\Windows\System32\config\systemprofile\AppData\Local\Jenkins.jenkins
Changed the protocol from HTTPS to HTTP in the file hudson.model.UpdateCenter.xml
Restarted Jenkins (Go to C:\Program Files\Jenkins and then execute jenkins.exe stop, jenkins.exe start)
Logged in to Jenkins again (http://localhost:8080/).
The offline error got solved.
In my case i have changed https to http in URL line of /var/lib/jenkins/hudson.model.UpdateCenter.xml file
and restarted the jenkins. It started functioning.
in case you are running jenkins in a container and vi is not installed
access your container in interactive mode
docker exec -it jenkins-ci /bin/bash
use this sed command to replace https with http
sed -i 's/https/http/g' /var/jenkins_home/hudson.model.UpdateCenter.xml
This mostly happens when you are working with company issued PC Windows OS.
Fix :-
click on "Configure Proxy" ask your IT team for specific server and port values that can bypass firewall and give your windows username & password. In this way you can resolve windows firewall and offline Jenkins issue.
I researched a lot over Internet but nowhere the fix is available.
Thanks!
For Ubuntu,
go to /home/username/.Jenkins/Hudson.model.UpdateCenter.xml and
edit the file from https to http.
On MacOS 10.11.6 :
Go to /Users/<UserName>/.jenkins
Open the file hudson.model.UpdateCenter.xml
Change the value of default from https://xxx to http://xxx
Took note of the secret Administrator password path that Jenkins displays when first opening http://localhost:8080/ on a browser.
The path was: C:\Users{username}\AppData\Local\Jenkins.jenkins\secrets.
Therefore the hudson.model.UpdateCenter file was at C:\Users{username}\AppData\Local\Jenkins.jenkins\
Updated the hudson.model.UpdateCenter file in notepad to have text http instead of https as follows:
http://updates.jenkins.io/update-center.json
Reloaded the http://localhost:8080/ page but still showed the text "This Jenkins instance appears to be offline."
Then navigated to the Services App in Windows (click Windows and type 'Services App' and it should display the App in the search list)
In the services App right clicked the Jenkins service and selected Restart.
After Windows restarted the Jenkins service navigated to http://localhost:8080/
The Jenkins page wouldn't even load. Navigated to the Jenkins login page: http://localhost:8080/login?from=%2F
Then got a loading page with text:'Please wait while Jenkins is getting ready to work ...
Your browser will reload automatically when Jenkins is ready.'
Assumed that Jenkins was still restarting.
Once the Jenkins login page loaded, entered that password/secret again and clicked Continue.
This time the page with "This Jenkins instance appears to be offline." was not displayed. Jenkins displayed a Getting Started -> Customize Jenkins page with buttons to install plugins.
For Windows OS,
follow below steps:
Go to C:\Users\\*your user name*\\.jenkins
Open the file hudson.model.UpdateCenter.xml
Update the value of url from https://xxx to http://xxx
I make no claims about this, especially Java related (I personally cannot stand the language), but on my Ubuntu 18.04 L/T, I needed to stand-up a standalone Jenkins instance; So I installed both the Java on which Jenkins appears to be dependent and Jenkins itself
sudo apt install openjdk-8-jdk jenkins
Then I updated the Jenkins defaults
sudo gvim /etc/default/jenkins
... inserting the following at the top of the file - only because editing /etc/init.d/jenkins appeared to serve no purpose as it had no effect whatsoever ...
JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/
PATH=$JAVA_HOME:$PATH
Finally, save & quit ... then attempt Jenkins restart
sudo service jenkins restart
HTH - it certainly worked for me :-)
I'm working on a Mac, and in my case, it turned out that the version of Java Jenkins was using (1.8.0u66) wasn't up to date enough. I had both Java 11 and Java 14 installed, but the jenkins-lts script was coded to force use of Java 8. Rather than install a more up to date JDK 8 installation, I modified the script to run ${JAVA_HOME}/bin/java and set JAVA_HOME to the JDK 11 installation.
It might not always be an option but if you have a choice use different Image. I used Debian GNU/Linux 10 and it worked like a charm.
Re-installing JAVA JDK8 worked for me.
Another possibility - make sure DNS functions properly for Jenkins.
In my case, I followed Kubernetes setup instructions here to install Jenkins, and it led to this problem.
I enabled logging on CoreDNS and saw this:
│ [INFO] 10.70.116.14:45888 - 50490 "AAAA IN updates.jenkins.io.svc.cluster.local. udp 54 false 512" NXDOMAIN qr,aa,rd 147 0.0001896s │
│ [INFO] 10.70.116.14:45888 - 32566 "A IN updates.jenkins.io.svc.cluster.local. udp 54 false 512" NXDOMAIN qr,aa,rd 147 0.000169468s │
│ [INFO] 10.70.116.14:57907 - 22912 "A IN updates.jenkins.io.localdomain. udp 48 false 512" NOERROR qr,aa 110 0.000907476s │
│ [INFO] 10.70.116.14:57907 - 52100 "AAAA IN updates.jenkins.io.localdomain. udp 48 false 512" NOERROR qr,aa 110 0.001709031s
The lookups were all cluster-local.
If I edited the URL (as suggested in other answers here) to include a dot after updates.jenkins.io. then hostname lookup worked and the URL resolved. Though Jenkins' next step errors for the same reason.
In the end I discovered the problem was ClusterFirst mode of the pod's DNS. I added dnsPolicy: Default to the deployment's pod template spec (the instructions link above), and now it works.
Even I faced similar issue, then figured out that JDK that I was using is 8 instead of 11.
Check jenkins jdk combination under jenkins official site
I used JDK11 with Jenkins 2.3031 version and it worked fine - all plugins got downloaded
In my case, I use WINDOWS OS. So, jenkins was installed in my C drive.
PATH : C:\Users\Username\ .jenkins
Under "hudson.model.UpdateCenter" file change "https" to "http"
<?xml version='1.1' encoding='UTF-8'?>
<sites>
<site>
<id>default</id>
<url>http://updates.jenkins.io/update-center.json</url>
</site>
</sites>
As some others pointed out, in Windows, this could be because of firewall restrictions set by company infrastructure.
For my case, I need the recommended plugins to be present (e.g. Folders plugin)
My workaround was:
A. Install same Jenkins version into my personal laptop/VM, and be sure to install the recommended plugins the first time you browse to the Jenkins Web Page.
B. Copy the plugins folder from my personal laptop's JENKINS HOME folder (i.e. ProgramData\Jenkins...) into the Jenkins plugins folder of the company laptop.
Total size of the plugins folder was around 150MB (zipped).
Enter this before running Jenkins.
# iptalbes -F
It may be because of the firewall.
jenkins_enable="YES"
jenkins_home="/usr/local/jenkins"
jenkins_user="jenkins"
jenkins_args="--webroot=${jenkins_home}/war --httpListenAddress=*.*.*.* --httpPort=8180"
#jenkins_java_opts="-Djavax.net.ssl.trustStore=/usr/local/jenkins/cacerts -Djava.net.preferIPv6Addresses=true"
#jenkins_java_opts="-Djavax.net.ssl.trustStore=/usr/local/jenkins/cacerts -Djava.net.preferIPv4Addresses=true"
Here is my whole scenario.
I have a RHEL 7.1 vmware image, with the corporate proxy properly configured, accessing stuff over http or https works properly.
Installed docker-engine, and added the HTTP_PROXY setting to /etc/systemd/system/docker.service.d/http-proxy.conf. I can verify the proxy setting is picked up by executing:
sudo systemctl show docker --property Environment
which will print:
Environment=HTTP_PROXY=http://proxy.mycompany.com:myport/ with real values of course.
Pulling and running docker images works correctly this way.
The goal is to work with the binary distribution of openshift-origin. I downloaded the binaries, and started setting up things as per the walkthrough page on github:
https://github.com/openshift/origin/blob/master/examples/sample-app/README.md
Starting openshift seems to work as I can:
* login via the openshift cli
* create a new project
* even access the web console
But when I try to create an app in the project (also via the cli):
oc new-app centos/ruby-22-centos7~https://github.com/openshift/ruby-hello-world.git
It fails:
error: can't look up Docker image "centos/ruby-22-centos7": Internal error occurred: Get https://registry-1.docker.io/v2/: dial tcp 52.71.246.213:443: connection refused
I can access (without authentication though) this endpoint via the browser on the VM or via WGET.
Hence I believe DOCKER fails to pick up the proxy settings. After some searching I also fear if there are IPTABLES settings missing. Referring to:
https://docs.docker.com/v1.7/articles/networking/
But I don't know if I should fiddle with the IPTABLES settings, should not Docker figure that out itself?
Check your HTTPS_PROXY environment property.