OpenShift Spanning Cluster: Distribute Replicas evenly between datacenters The 2019 Stack Overflow Developer Survey Results Are In Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern) Come Celebrate our 10 Year Anniversary!Dynamic Commands and Parameters in Kubernetes TemplatesSingle Kubernetes/OpenShift cluster/instance across datacenters?Spreading workload across KubernetesMismatch between request external IP and forwarding rule k8s service targetKubernetes - can I avoid using the GCE Load Balancer to reduce cost?GKE pod can't make any DNS requestsHow can I guarantee/reserve resources for kube-system?Configuring Kubernetes Service as a UPnP DeviceHow to increase disk size in a stateful set
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OpenShift Spanning Cluster: Distribute Replicas evenly between datacenters
The 2019 Stack Overflow Developer Survey Results Are In
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)
Come Celebrate our 10 Year Anniversary!Dynamic Commands and Parameters in Kubernetes TemplatesSingle Kubernetes/OpenShift cluster/instance across datacenters?Spreading workload across KubernetesMismatch between request external IP and forwarding rule k8s service targetKubernetes - can I avoid using the GCE Load Balancer to reduce cost?GKE pod can't make any DNS requestsHow can I guarantee/reserve resources for kube-system?Configuring Kubernetes Service as a UPnP DeviceHow to increase disk size in a stateful set
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I have an OpenShift Cluster which is spanned between two physical separated datacenters for georedundancy. The nodes are labeled according to their location.
Now i'm searching for a way to configure the scheduler in such a way that if a pod is running with one replica (which is in one of the two datacenters), and an additional replica is started, the additional replica starts in the other datacenters? So that if the deployment is running with an even number of replicas, the replicas are evenly distributed between both datacenters?
I was searching in the pod/node affinity documentation as well as scheduler configuration, but i didn't find anything i need. Maybe i'm just googling wrong?
Any help is greatly appreciated.
kubernetes scheduler
asked Apr 9 at 8:00
simonszusimonszu
9810
add a comment |
I have an OpenShift Cluster which is spanned between two physical separated datacenters for georedundancy. The nodes are labeled according to their location.
Now i'm searching for a way to configure the scheduler in such a way that if a pod is running with one replica (which is in one of the two datacenters), and an additional replica is started, the additional replica starts in the other datacenters? So that if the deployment is running with an even number of replicas, the replicas are evenly distributed between both datacenters?
I was searching in the pod/node affinity documentation as well as scheduler configuration, but i didn't find anything i need. Maybe i'm just googling wrong?
Any help is greatly appreciated.
kubernetes scheduler
asked Apr 9 at 8:00
simonszusimonszu
9810
Hi docs.openshift.com/container-platform/3.11/admin_guide/… It would be helpful
– Suresh Vishnoi
Apr 9 at 8:33
add a comment |
I have an OpenShift Cluster which is spanned between two physical separated datacenters for georedundancy. The nodes are labeled according to their location.
Now i'm searching for a way to configure the scheduler in such a way that if a pod is running with one replica (which is in one of the two datacenters), and an additional replica is started, the additional replica starts in the other datacenters? So that if the deployment is running with an even number of replicas, the replicas are evenly distributed between both datacenters?
I was searching in the pod/node affinity documentation as well as scheduler configuration, but i didn't find anything i need. Maybe i'm just googling wrong?
Any help is greatly appreciated.
kubernetes scheduler
asked Apr 9 at 8:00
simonszusimonszu
9810
I have an OpenShift Cluster which is spanned between two physical separated datacenters for georedundancy. The nodes are labeled according to their location.
Now i'm searching for a way to configure the scheduler in such a way that if a pod is running with one replica (which is in one of the two datacenters), and an additional replica is started, the additional replica starts in the other datacenters? So that if the deployment is running with an even number of replicas, the replicas are evenly distributed between both datacenters?
I was searching in the pod/node affinity documentation as well as scheduler configuration, but i didn't find anything i need. Maybe i'm just googling wrong?
Any help is greatly appreciated.
kubernetes scheduler
kubernetes scheduler
asked Apr 9 at 8:00
simonszusimonszu
9810
asked Apr 9 at 8:00
simonszusimonszu
9810
asked Apr 9 at 8:00
simonszusimonszu
9810
asked Apr 9 at 8:00
simonszusimonszu
9810
asked Apr 9 at 8:00
simonszusimonszu
9810
9810
Hi docs.openshift.com/container-platform/3.11/admin_guide/… It would be helpful
– Suresh Vishnoi
Apr 9 at 8:33
add a comment |
Hi docs.openshift.com/container-platform/3.11/admin_guide/… It would be helpful
– Suresh Vishnoi
Apr 9 at 8:33
Hi docs.openshift.com/container-platform/3.11/admin_guide/… It would be helpful
– Suresh Vishnoi
Apr 9 at 8:33
Hi docs.openshift.com/container-platform/3.11/admin_guide/… It would be helpful
– Suresh Vishnoi
Apr 9 at 8:33
add a comment |
1 Answer
1
active
oldest
votes
If you have given a label to the nodes, for instance location, check the labels with the following command
oc get nodes --show-labels
ServiceAntiAffinity takes a label and ensures a good spread of the pods belonging to the same service across the group of nodes based on the label values
Spread across datacenter
you can add the following content inside the /etc/origin/master/scheduler.json file
"argument":
"serviceAntiAffinity":
"label": "location"
,
"name": "Location",
"weight": 2
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
If you have given a label to the nodes, for instance location, check the labels with the following command
oc get nodes --show-labels
ServiceAntiAffinity takes a label and ensures a good spread of the pods belonging to the same service across the group of nodes based on the label values
Spread across datacenter
you can add the following content inside the /etc/origin/master/scheduler.json file
"argument":
"serviceAntiAffinity":
"label": "location"
,
"name": "Location",
"weight": 2
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
add a comment |
If you have given a label to the nodes, for instance location, check the labels with the following command
oc get nodes --show-labels
ServiceAntiAffinity takes a label and ensures a good spread of the pods belonging to the same service across the group of nodes based on the label values
Spread across datacenter
you can add the following content inside the /etc/origin/master/scheduler.json file
"argument":
"serviceAntiAffinity":
"label": "location"
,
"name": "Location",
"weight": 2
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
add a comment |
If you have given a label to the nodes, for instance location, check the labels with the following command
oc get nodes --show-labels
ServiceAntiAffinity takes a label and ensures a good spread of the pods belonging to the same service across the group of nodes based on the label values
Spread across datacenter
you can add the following content inside the /etc/origin/master/scheduler.json file
"argument":
"serviceAntiAffinity":
"label": "location"
,
"name": "Location",
"weight": 2
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
If you have given a label to the nodes, for instance location, check the labels with the following command
oc get nodes --show-labels
ServiceAntiAffinity takes a label and ensures a good spread of the pods belonging to the same service across the group of nodes based on the label values
Spread across datacenter
you can add the following content inside the /etc/origin/master/scheduler.json file
"argument":
"serviceAntiAffinity":
"label": "location"
,
"name": "Location",
"weight": 2
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
answered Apr 9 at 8:42
Suresh VishnoiSuresh Vishnoi
1112
1112
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Suresh Vishnoi is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
add a comment |
1
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
1
1
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
I have searched kubernetes documentation and stumbled upon failure-domain.beta.kubernetes.io, which, in addition to SelectorSpreadPolicy in the scheduler seems to resolve my issue as well. Can you tell me the difference between both approaches?
– simonszu
Apr 9 at 9:51
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
My cluster is on bare metal, thus i do not have any personal experience
– Suresh Vishnoi
Apr 9 at 10:04
add a comment |
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Hi docs.openshift.com/container-platform/3.11/admin_guide/… It would be helpful
– Suresh Vishnoi
Apr 9 at 8:33