ulimit core size for specific pod(container) in Openshift
Hi, Is there a way in openshift to configure ulimit core size(as 0) for a specific docker container ? In docker, there is a argument like --core size=0 to "docker run" by which you can have core size for a specific docker container. Is there some configuration available in openshift template for same? Note: Updating "kernel.core_pattern as |/bin/false" helps but if affects the Host (and other containers) as well. Also, tried out these(as part of docker build), but all the below three fails to stop core getting generated. 1. echo 'DumpCore=no' | tee -a /etc/systemd/system.conf 2. echo '* hardcore0' | tee -a /etc/security/limits.conf 3. echo 'ulimit -c 0' | tee -a /etc/profile Please let me know whether any way exists in openshift / any suggestion with above approaches? Thanks, Saravana ___ users mailing list users@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/users
Re: How to make 172.30.0.1 (kubernetes service) health checked?
In OpenShift 3.9, when a master goes down the endpoints object should be
updated within 15s (the TTL on the record for the master). You can check
the value of "oc get endpoints -n default kubernetes" - if you still see
the master IP in that list after 15s then something else is wrong.
On Wed, Jun 27, 2018 at 9:33 AM, Joel Pearson wrote:
> Hi,
>
> I'm running OpenShift 3.9 on AWS with masters in HA mode using Classic
> ELB's doing TCP load balancing. If I restart masters, from outside the
> cluster the ELB does the right thing and takes a master out of service.
> However, if something tries to talk to the kubernetes API inside the
> cluster, it seems that kubernetes is unaware the master is missing, and I
> get failures when I'm serially restarting masters.
>
> Is there some way that I can point the kubernetes service to use the load
> balancer? Maybe I should update the kubernetes endpoint object to use the
> ELB IP address instead of the actual master addresses? Is this a valid
> approach? Is there some way with openshift-ansible I can tell the
> kubernetes service to use the load balancer when it creates the kubernetes
> service?
>
> Thanks,
>
> Joel
>
>
> apiVersion: v1
> kind: Service
> metadata:
> creationTimestamp: '2018-06-27T06:30:50Z'
> labels:
> component: apiserver
> provider: kubernetes
> name: kubernetes
> namespace: default
> resourceVersion: '45'
> selfLink: /api/v1/namespaces/default/services/kubernetes
> uid: a224fd75-79d3-11e8-bd57-0a929ba50438
> spec:
> clusterIP: 172.30.0.1
> ports:
> - name: https
> port: 443
> protocol: TCP
> targetPort: 443
> - name: dns
> port: 53
> protocol: UDP
> targetPort: 8053
> - name: dns-tcp
> port: 53
> protocol: TCP
> targetPort: 8053
> sessionAffinity: ClientIP
> sessionAffinityConfig:
> clientIP:
> timeoutSeconds: 10800
> type: ClusterIP
> status:
> loadBalancer: {}
>
>
> apiVersion: v1
> kind: Endpoints
> metadata:
> creationTimestamp: '2018-06-27T06:30:50Z'
> name: kubernetes
> namespace: default
> resourceVersion: '83743'
> selfLink: /api/v1/namespaces/default/endpoints/kubernetes
> uid: a22a0283-79d3-11e8-bd57-0a929ba50438
> subsets:
> - addresses:
> - ip: 10.2.12.53
> - ip: 10.2.12.72
> - ip: 10.2.12.91
> ports:
> - name: dns
> port: 8053
> protocol: UDP
> - name: dns-tcp
> port: 8053
> protocol: TCP
> - name: https
> port: 443
> protocol: TCP
>
>
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> users mailing list
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> http://lists.openshift.redhat.com/openshiftmm/listinfo/users
>
>
___
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Re: Log tracing on configmaps modifications - or other resources
If you have api audit logging on (see docs for master-config) you would see who edited the config map and what time. On Jun 27, 2018, at 1:59 PM, leo David wrote: Hello everyone, I'm encountering this situation on OS Origin 3.9, in which someone whith full acces in a particular namespace modified a ConfigMap and broke a service. Is there a way to trace who / when edited a resource in OpenShift - as security concerns ? Thank you very much ! -- *Leo David* * DevOps* *Syncrasy LTD* www.syncrasy.io ___ users mailing list users@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/users ___ users mailing list users@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/users
Log tracing on configmaps modifications - or other resources
Hello everyone, I'm encountering this situation on OS Origin 3.9, in which someone whith full acces in a particular namespace modified a ConfigMap and broke a service. Is there a way to trace who / when edited a resource in OpenShift - as security concerns ? Thank you very much ! -- *Leo David* * DevOps* *Syncrasy LTD* www.syncrasy.io ___ users mailing list users@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/users
List the options openshift_node_labels
Hi dear, Where find the list options the configuration for openshift_node_group_name . and openshift_node_labels to OpenShift Origin? -- Atenciosamente, Rafael Tomelin skype: rafael.tomelin E-mail: rafael.tome...@gmail.com RHCE - Red Hat Certified Engineer PPT-205 - Puppet Certified Professional 2017 Zabbix- ZABBIX Certified Specialist LPI3 ITIL v3 ___ users mailing list users@lists.openshift.redhat.com http://lists.openshift.redhat.com/openshiftmm/listinfo/users
How to make 172.30.0.1 (kubernetes service) health checked?
Hi,
I'm running OpenShift 3.9 on AWS with masters in HA mode using Classic
ELB's doing TCP load balancing. If I restart masters, from outside the
cluster the ELB does the right thing and takes a master out of service.
However, if something tries to talk to the kubernetes API inside the
cluster, it seems that kubernetes is unaware the master is missing, and I
get failures when I'm serially restarting masters.
Is there some way that I can point the kubernetes service to use the load
balancer? Maybe I should update the kubernetes endpoint object to use the
ELB IP address instead of the actual master addresses? Is this a valid
approach? Is there some way with openshift-ansible I can tell the
kubernetes service to use the load balancer when it creates the kubernetes
service?
Thanks,
Joel
apiVersion: v1
kind: Service
metadata:
creationTimestamp: '2018-06-27T06:30:50Z'
labels:
component: apiserver
provider: kubernetes
name: kubernetes
namespace: default
resourceVersion: '45'
selfLink: /api/v1/namespaces/default/services/kubernetes
uid: a224fd75-79d3-11e8-bd57-0a929ba50438
spec:
clusterIP: 172.30.0.1
ports:
- name: https
port: 443
protocol: TCP
targetPort: 443
- name: dns
port: 53
protocol: UDP
targetPort: 8053
- name: dns-tcp
port: 53
protocol: TCP
targetPort: 8053
sessionAffinity: ClientIP
sessionAffinityConfig:
clientIP:
timeoutSeconds: 10800
type: ClusterIP
status:
loadBalancer: {}
apiVersion: v1
kind: Endpoints
metadata:
creationTimestamp: '2018-06-27T06:30:50Z'
name: kubernetes
namespace: default
resourceVersion: '83743'
selfLink: /api/v1/namespaces/default/endpoints/kubernetes
uid: a22a0283-79d3-11e8-bd57-0a929ba50438
subsets:
- addresses:
- ip: 10.2.12.53
- ip: 10.2.12.72
- ip: 10.2.12.91
ports:
- name: dns
port: 8053
protocol: UDP
- name: dns-tcp
port: 8053
protocol: TCP
- name: https
port: 443
protocol: TCP
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