problem with jenkins not able to access git

[Phil Swenson]

I have a new jenkins server I'm trying to stand up 2.4 with all latest plugins... it works for a day and then starts giving me errors like this:

Started by timer
 > git rev-parse --is-inside-work-tree # timeout=10
Setting origin to git@bitbucket.org:myco/ace-esni-datastore.git
 > git config remote.origin.url git@bitbucket.org:mygo/ace-esni-datastore.git # timeout=10
Fetching & pruning origin...
Fetching upstream changes from origin
 > git --version # timeout=10
using GIT_SSH to set credentials 
 > git fetch --tags --progress origin +refs/heads/*:refs/remotes/origin/* --prune
FATAL: Failed to recompute children of ace-esni-datastore-test
hudson.plugins.git.GitException: Command "git fetch --tags --progress origin +refs/heads/*:refs/remotes/origin/* --prune" returned status code 128:
stdout: 
stderr: ssh: Could not resolve hostname bitbucket.org: Name or service not known
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

        at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1772)
        at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1516)
        at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$300(CliGitAPIImpl.java:67)
        at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:318)
        at jenkins.plugins.git.AbstractGitSCMSource.doRetrieve(AbstractGitSCMSource.java:203)
        at jenkins.plugins.git.AbstractGitSCMSource.retrieve(AbstractGitSCMSource.java:233)
        at jenkins.scm.api.SCMSource.fetch(SCMSource.java:148)
        at jenkins.branch.MultiBranchProject.computeChildren(MultiBranchProject.java:294)
        at com.cloudbees.hudson.plugins.folder.computed.ComputedFolder.updateChildren(ComputedFolder.java:187)
        at com.cloudbees.hudson.plugins.folder.computed.FolderComputation.run(FolderComputation.java:139)
        at hudson.model.ResourceController.execute(ResourceController.java:98)
        at hudson.model.Executor.run(Executor.java:404)
Finished: FAILURE

All the jobs do this (all pipeline jobs)

I had this problem yesterday as well and restored from a snapshot and got it going again... then I upgraded to jenkins 2.4 and updated all the plugins.  Everything was great, but all of a sudden this error popped up again.

Any ideas? 

thanks,

phil

[Phil Swenson]

Actually I don't think it has anything to do with git... i tried downgrading my git plugin and got this error:

• Failed to resolve host name updates.jenkins-ci.org. Perhaps you need to configure HTTP proxy?