Re: Builder unable to resolve github.com

[Graham Dumpleton]

The required setup instructions can be seen at:

https://github.com/openshift/origin/blob/master/docs/cluster_up_down.md#linux 


It describes what you need to do with the firewall.

> On 13 Nov 2017, at 7:35 am, Marc Boorshtein  wrote:
> 
> is your machine (the centos7 vm) running dnsmasq or anything else on port 53? 
>  If so, shut it down prior to bringing up your cluster.
> 
> 
> Nothing is running on 53:
> tcp0  0 localhost:10443 0.0.0.0:*   LISTEN
>  
> tcp0  0 localhost:10444 0.0.0.0:*   LISTEN
>  
> tcp0  0 0.0.0.0:http0.0.0.0:*   LISTEN
>  
> tcp0  0 0.0.0.0:senomix02   0.0.0.0:*   LISTEN
>  
> tcp0  0 0.0.0.0:ssh 0.0.0.0:*   LISTEN
>  
> tcp0  0 localhost:smtp  0.0.0.0:*   LISTEN
>  
> tcp0  0 0.0.0.0:https   0.0.0.0:*   LISTEN
>  
> tcp0  0 0.0.0.0:pcsync-https0.0.0.0:*   LISTEN
>  
> tcp6   0  0 [::]:jetcmeserver   [::]:*  LISTEN
>  
> tcp6   0  0 [::]:ssh[::]:*  LISTEN
>  
> tcp6   0  0 [::]:afs3-callback  [::]:*  LISTEN
>  
> tcp6   0  0 localhost:smtp  [::]:*  LISTEN
>  
> tcp6   0  0 [::]:newoak [::]:*  LISTEN
>  
> tcp6   0  0 [::]:10250  [::]:*  LISTEN
>  
> udp0  0 0.0.0.0:64109    0.0.0.0:* 
>  
> udp0  0 0.0.0.0:20230    0.0.0.0:* 
>  
> udp0  0 0.0.0.0:senomix02   0.0.0.0:* 
>  
> udp0  0 0.0.0.0:bootpc  0.0.0.0:* 
>  
> udp0  0 0.0.0.0:bootpc  0.0.0.0:* 
>  
> udp0  0 localhost:323   0.0.0.0:* 
>  
> udp6   0  0 [::]:64109  [::]:*
>  
> udp6   0  0 [::]:15385  [::]:*
>  
> udp6   0  0 localhost:323   [::]:*
>  
> raw6   0  0 [::]:ipv6-icmp  [::]:*  7 
>  
> raw6   0  0 [::]:ipv6-icmp  [::]:* 
> 
> Firewalld is running...should I add an open up 53?
> 
>  
> what the master container can resolve is not relevant, but if you want to 
> diagnose things further, start a different pod (like the jenkins pod) and rsh 
> into that pod and see
> 1) whether it can resolve hosts
> 2) what its /etc/resolv.conf value is
> 3) whether it has external connectivity (independent of its ability to 
> resolve hostnames)
> 
> I did fire up another container and it can't resolve service DNS names
> 
>  
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Re: Builder unable to resolve github.com

[Marc Boorshtein]

>
> is your machine (the centos7 vm) running dnsmasq or anything else on port
> 53?  If so, shut it down prior to bringing up your cluster.
>
>
Nothing is running on 53:
tcp0  0 localhost:10443 0.0.0.0:*   LISTEN

tcp0  0 localhost:10444 0.0.0.0:*   LISTEN

tcp0  0 0.0.0.0:http0.0.0.0:*   LISTEN

tcp0  0 0.0.0.0:senomix02   0.0.0.0:*   LISTEN

tcp0  0 0.0.0.0:ssh 0.0.0.0:*   LISTEN

tcp0  0 localhost:smtp  0.0.0.0:*   LISTEN

tcp0  0 0.0.0.0:https   0.0.0.0:*   LISTEN

tcp0  0 0.0.0.0:pcsync-https0.0.0.0:*   LISTEN

tcp6   0  0 [::]:jetcmeserver   [::]:*  LISTEN

tcp6   0  0 [::]:ssh[::]:*  LISTEN

tcp6   0  0 [::]:afs3-callback  [::]:*  LISTEN

tcp6   0  0 localhost:smtp  [::]:*  LISTEN

tcp6   0  0 [::]:newoak [::]:*  LISTEN

tcp6   0  0 [::]:10250  [::]:*  LISTEN

udp0  0 0.0.0.0:64109   0.0.0.0:*

udp0  0 0.0.0.0:20230   0.0.0.0:*

udp0  0 0.0.0.0:senomix02   0.0.0.0:*

udp0  0 0.0.0.0:bootpc  0.0.0.0:*

udp0  0 0.0.0.0:bootpc  0.0.0.0:*

udp0  0 localhost:323   0.0.0.0:*

udp6   0  0 [::]:64109  [::]:*

udp6   0  0 [::]:15385  [::]:*

udp6   0  0 localhost:323   [::]:*

raw6   0  0 [::]:ipv6-icmp  [::]:*  7

raw6   0  0 [::]:ipv6-icmp  [::]:*

Firewalld is running...should I add an open up 53?



> what the master container can resolve is not relevant, but if you want to
> diagnose things further, start a different pod (like the jenkins pod) and
> rsh into that pod and see
> 1) whether it can resolve hosts
> 2) what its /etc/resolv.conf value is
> 3) whether it has external connectivity (independent of its ability to
> resolve hostnames)
>

I did fire up another container and it can't resolve service DNS names
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Re: Builder unable to resolve github.com

[Ben Parees]

On Sun, Nov 12, 2017 at 2:05 PM, Marc Boorshtein 
wrote:

> I'm trying to deploy a custom s2i builder into my origin instance and when
> the build starts I get the the following error from the builder process:
>
> Cloning "https://github.com/TremoloSecurity/openunison-qs-openshift.git;
> ...
> error: build error: fatal: unable to access 'https://github.com/
> TremoloSecurity/openunison-qs-openshift.git/': Could not resolve host:
> github.com; Unknown error
>
> OpenShift is Origin:
>
> oc v3.6.1+008f2d5
> kubernetes v1.6.1+5115d708d7
> features: Basic-Auth GSSAPI Kerberos SPNEGO
>
> Server https://127.0.0.1:8443
> openshift v3.6.1+008f2d5
> kubernetes v1.6.1+5115d708d7
>
> Installed on CentOS7 using cluster up.  If I go into the master container
> I can resolve github.com just fine.  my VM has 2 virtual nics, one for
> host only and one for NAT (Virtual Box running on Fedora 26).
>

is your machine (the centos7 vm) running dnsmasq or anything else on port
53?  If so, shut it down prior to bringing up your cluster.

what the master container can resolve is not relevant, but if you want to
diagnose things further, start a different pod (like the jenkins pod) and
rsh into that pod and see
1) whether it can resolve hosts
2) what its /etc/resolv.conf value is
3) whether it has external connectivity (independent of its ability to
resolve hostnames)



> I found the following github issue but I don't see any movement on it (
> https://github.com/openshift/openshift-ansible/issues/5249).  Any help
> would be greatly appreciated.
>

since you aren't using the ansible installer, that issue is probably not
relevant for you.


> Thanks
> Marc
>
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>
>


-- 
Ben Parees | OpenShift
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Builder unable to resolve github.com

[Marc Boorshtein]

I'm trying to deploy a custom s2i builder into my origin instance and when
the build starts I get the the following error from the builder process:

Cloning "https://github.com/TremoloSecurity/openunison-qs-openshift.git;
...
error: build error: fatal: unable to access '
https://github.com/TremoloSecurity/openunison-qs-openshift.git/': Could not
resolve host: github.com; Unknown error

OpenShift is Origin:

oc v3.6.1+008f2d5
kubernetes v1.6.1+5115d708d7
features: Basic-Auth GSSAPI Kerberos SPNEGO

Server https://127.0.0.1:8443
openshift v3.6.1+008f2d5
kubernetes v1.6.1+5115d708d7

Installed on CentOS7 using cluster up.  If I go into the master container I
can resolve github.com just fine.  my VM has 2 virtual nics, one for host
only and one for NAT (Virtual Box running on Fedora 26).

I found the following github issue but I don't see any movement on it (
https://github.com/openshift/openshift-ansible/issues/5249).  Any help
would be greatly appreciated.

Thanks
Marc
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