Hello,
I am having a hard time understanding the relationship between master and
worker nodes - specifically, how things work with git.
The way I understand things at the moment, *Master Node *is able to
pass-on/share ssh keys and passphrases with worker nodes via Credential
Plugin. This is why worker nodes are able to run git clone and git init in
the repos sent to them from the Master Node. Is this correct?
If so, I would like to understand why this:
steps{
sh('git remote -v')
sshagent(credentials: ['some-cred']) {
sh('git tag -a $BRANCH_NAME.$BUILD_NUMBER -m "git sha is
$GIT_COMMIT"')
sh('git push origin HEAD:development --tags')
}
}
produces the errors below:
[K-Front_feature-jenkinsfile-KHCSHNIRHLZUOTSCIQPWI7] Running shell script
+ git remote -v
origin https://github.com/OrgName/SampleRepo.git
<https://github.com/GashiandKinks/GK-Front.git> (fetch)
origin https://github.com/ <https://github.com/GashiandKinks/GK-Front.git>
OrgName/SampleRepo.git <https://github.com/GashiandKinks/GK-Front.git>
(push)
[Pipeline] sshagent
FATAL: [ssh-agent] Could not find specified credentials
[ssh-agent] Looking for ssh-agent implementation...
[ssh-agent] Exec ssh-agent (binary ssh-agent on a remote machine)
$ ssh-agent
SSH_AUTH_SOCK=/tmp/ssh-5mWVQddQ47JG/agent.4864
SSH_AGENT_PID=4866
[ssh-agent] Started.
[Pipeline] {
[Pipeline] sh
[K-Front_feature-jenkinsfile-KHCSHNIRHLZUOTSCIQPWI7] Running shell script
+ git tag -a feature-jenkinsfile.19 -m git sha is
a12ea59545db96fc8681dbdd5d44923108c01b40
[Pipeline] sh
$ ssh-agent -k
unset SSH_AUTH_SOCK;
unset SSH_AGENT_PID;
echo Agent pid 4866 killed;
[ssh-agent] Stopped.
[K-Front_feature-jenkinsfile-KHCSHNIRHLZUOTSCIQPWI7] Running shell script
+ git push origin +refs/heads/feature-jenkinsfile --tags
error: src refspec refs/heads/feature-jenkinsfile does not match any.
error: failed to push some refs to 'https://github.com/
<https://github.com/GashiandKinks/GK-Front.git>OrgName/SampleRepo.git
<https://github.com/GashiandKinks/GK-Front.git>'
Is this because I am using ssh as opposed to https? I am not sure.
When I attempt to switch to https protocol by making use of withCredentials()
function:
steps{
sh('git remote -v')
withCredentials([string(credentialsId:'github-org-credential')]) {
sh('git tag -a $BRANCH_NAME.$BUILD_NUMBER -m "git sha is $GIT_COMMIT"')
sh('git push origin HEAD:development --tags')
}
}
I get this error:
org.jenkinsci.plugins.credentialsbinding.impl.CredentialNotFoundException:
Credentials 'github-org-credential' is of type 'Username with password' where
'org.jenkinsci.plugins.plaincredentials.StringCredentials' was expected at
org.jenkinsci.plugins.credentialsbinding.MultiBinding.getCredentials(MultiBinding.java:164)
at
org.jenkinsci.plugins.credentialsbinding.impl.StringBinding.bindSingle(StringBinding.java:62)
at org.jenkinsci.plugins.credentialsbinding.Binding.bind(Binding.java:150) at
org.jenkinsci.plugins.credentialsbinding.impl.BindingStep$Execution.start(BindingStep.java:114)
at org.jenkinsci.plugins.workflow.cps.DSL.invokeStep(DSL.java:224) at
org.jenkinsci.plugins.workflow.cps.DSL.invokeMethod(DSL.java:150) at
org.jenkinsci.plugins.workflow.cps.CpsScript.invokeMethod(CpsScript.java:108)
at sun.reflect.GeneratedMethodAccessor440.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93) at
groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325) at
groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1213) at
groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1022) at
org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42)
at
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:155) at
org.kohsuke.groovy.sandbox.GroovyInterceptor.onMethodCall(GroovyInterceptor.java:23)
at
org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:133)
I am confused. I don't understand where/how git authentication happens.
Also when do we use sshagent vs credential plugins?
Appreciate any feedback/insight. Thank you
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