mirror of https://github.com/k3d-io/k3d
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/* |
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Copyright © 2020-2021 The k3d Author(s) |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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of this software and associated documentation files (the "Software"), to deal |
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in the Software without restriction, including without limitation the rights |
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the Software is |
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furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included in |
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all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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package types |
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/* DESCRIPTION |
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* The Loadbalancer is a customized NGINX container running side-by-side with the cluster, NOT INSIDE IT. |
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* It is used to do plain proxying of tcp/udp ports to the k3d node containers. |
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* One advantage of this approach is, that we can add new ports while the cluster is still running by re-creating |
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* the loadbalancer and adding the new port config in the NGINX config. As the loadbalancer doesn't hold any state |
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* (apart from the config file), it can easily be re-created in just a few seconds. |
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*/ |
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/* |
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* Loadbalancer Definition |
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*/ |
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type Loadbalancer struct { |
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Node Node `mapstructure:",squash" yaml:",inline"` // the underlying node
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Config LoadbalancerConfig `mapstructure:"config" yaml:"config"` // its configuration
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} |
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func NewLoadbalancer() *Loadbalancer { |
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return &Loadbalancer{ |
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Node: Node{ |
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Role: LoadBalancerRole, |
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Image: GetLoadbalancerImage(), |
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}, |
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} |
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} |
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/* |
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* Loadbalancer Configuration |
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*/ |
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/* LoadbalancerConfig defines the coarse file structure to configure the k3d-proxy |
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* Example: |
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* ports: |
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* 1234.tcp: |
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* - k3d-k3s-default-server-0 |
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* - k3d-k3s-default-server-1 |
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* 4321.udp: |
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* - k3d-k3s-default-agent-0 |
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* - k3d-k3s-default-agent-1 |
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*/ |
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type LoadbalancerConfig struct { |
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Ports map[string][]string `yaml:"ports"` |
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Settings LoadBalancerSettings `yaml:"settings"` |
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} |
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type LoadBalancerSettings struct { |
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WorkerProcesses int `yaml:"workerProcesses"` |
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} |
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const ( |
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DefaultLoadbalancerConfigPath = "/etc/confd/values.yaml" |
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DefaultLoadbalancerWorkerProcesses = 1024 |
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) |
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type LoadbalancerCreateOpts struct { |
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Labels map[string]string |
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} |
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/* |
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* Helper Functions |
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*/ |
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// HasLoadBalancer returns true if cluster has a loadbalancer node
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func (c *Cluster) HasLoadBalancer() bool { |
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for _, node := range c.Nodes { |
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if node.Role == LoadBalancerRole { |
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return true |
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} |
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} |
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return false |
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} |
@ -0,0 +1,39 @@ |
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/* |
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Copyright © 2020-2021 The k3d Author(s) |
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Permission is hereby granted, free of charge, to any person obtaining a copy |
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|
of this software and associated documentation files (the "Software"), to deal |
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|
in the Software without restriction, including without limitation the rights |
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|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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|
copies of the Software, and to permit persons to whom the Software is |
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|
furnished to do so, subject to the following conditions: |
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|
|
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The above copyright notice and this permission notice shall be included in |
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|
all copies or substantial portions of the Software. |
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|
|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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THE SOFTWARE. |
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*/ |
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package types |
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func (node *Node) FillRuntimeLabels() { |
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labels := make(map[string]string) |
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for k, v := range DefaultRuntimeLabels { |
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labels[k] = v |
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} |
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for k, v := range DefaultRuntimeLabelsVar { |
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labels[k] = v |
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} |
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for k, v := range node.RuntimeLabels { |
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labels[k] = v |
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} |
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node.RuntimeLabels = labels |
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// second most important: the node role label
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node.RuntimeLabels[LabelRole] = string(node.Role) |
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} |
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