forked from rook/rook
Travis Nielsen
b91f4211c9
In clusters where only two datacenters (or similar failure domains) are available, a different mon and osd approach is needed to deal with the network partitions or some other reason for one of the failure domains going down. The Ceph stretched cluster makes the mons aware of the failure domains by configuring one as the arbiter in a third zone, while keeping two replicas of the data in each of the data zoens. Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package mon
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import (
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"github.com/pkg/errors"
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v1 "k8s.io/api/core/v1"
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)
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// NodeUsage is a mapping between a Node and computed metadata about the node
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// that is used in monitor pod scheduling.
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type NodeUsage struct {
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Node *v1.Node
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// The number of monitor pods assigned to the node
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MonCount int
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// The node is available for scheduling monitor pods. This is equivalent to
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// evaluating k8sutil.ValidNode(node, cephv1.GetMonPlacement(c.spec.Placement))
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MonValid bool
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}
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func getNodeInfoFromNode(n v1.Node) (*MonScheduleInfo, error) {
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nr := &MonScheduleInfo{
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Name: n.Name,
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Hostname: n.Labels[v1.LabelHostname],
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}
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for _, ip := range n.Status.Addresses {
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if ip.Type == v1.NodeInternalIP {
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logger.Debugf("using internal IP %s for node %s", ip.Address, n.Name)
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nr.Address = ip.Address
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break
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}
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}
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if nr.Address == "" {
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return nil, errors.Errorf("failed to find any internal IP on node %s", nr.Name)
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}
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return nr, nil
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}
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