mirror of https://github.com/k3d-io/k3d
Thorsten Klein
3 years ago
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GitHub
commit
139eadec19
@ -1,4 +1,3 @@ |
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title: FAQ |
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nav: |
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- faq.md |
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- v1vsv3-comparison.md |
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- faq.md |
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@ -1,63 +0,0 @@ |
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# Feature Comparison: v1 vs. v3 |
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|
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## v1.x feature -> implementation in v3 |
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|
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```text |
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- k3d |
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- check-tools -> won't do |
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- shell -> planned: `k3d shell CLUSTER` |
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- --name -> planned: drop (now as arg) |
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- --command -> planned: keep |
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- --shell -> planned: keep (or second arg) |
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- auto, bash, zsh |
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- create -> `k3d cluster create CLUSTERNAME` |
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- --name -> dropped, implemented via arg |
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- --volume -> implemented |
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- --port -> implemented |
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- --port-auto-offset -> TBD |
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- --api-port -> implemented |
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- --wait -> implemented |
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- --image -> implemented |
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- --server-arg -> implemented as `--k3s-server-arg` |
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- --agent-arg -> implemented as `--k3s-agent-arg` |
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- --env -> planned |
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- --label -> planned |
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- --workers -> implemented |
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- --auto-restart -> dropped (docker's `unless-stopped` is set by default) |
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- --enable-registry -> coming in v4.0.0 (2021) as `--registry-create` and `--registry-use` |
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- --registry-name -> TBD |
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- --registry-port -> TBD |
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- --registry-volume -> TBD |
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- --registries-file -> TBD |
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- --enable-registry-cache -> TBD |
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- (add-node) -> `k3d node create NODENAME` |
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- --role -> implemented |
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- --name -> dropped, implemented as arg |
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- --count -> implemented as `--replicas` |
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- --image -> implemented |
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- --arg -> planned |
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- --env -> planned |
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- --volume -> planned |
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- --k3s -> TBD |
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- --k3s-secret -> TBD |
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- --k3s-token -> TBD |
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- delete -> `k3d cluster delete CLUSTERNAME` |
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- --name -> dropped, implemented as arg |
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- --all -> implemented |
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- --prune -> TBD |
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- --keep-registry-volume -> TBD |
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- stop -> `k3d cluster stop CLUSTERNAME` |
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- --name -> dropped, implemented as arg |
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- --all -> implemented |
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- start -> `k3d cluster start CLUSTERNAME` |
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- --name -> dropped, implemented as arg |
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- --all -> implemented |
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- list -> dropped, implemented as `k3d get clusters` |
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- get-kubeconfig -> `k3d kubeconfig get|merge CLUSTERNAME` |
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- --name -> dropped, implemented as arg |
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- --all -> implemented |
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- --overwrite -> implemented |
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- import-images -> `k3d image import [--cluster CLUSTERNAME] [--keep] IMAGES` |
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- --name -> implemented as `--cluster` |
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- --no-remove -> implemented as `--keep-tarball` |
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``` |
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@ -1,15 +1,22 @@ |
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# Defaults |
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|
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- multiple server nodes |
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- by default, when `--server` > 1 and no `--datastore-x` option is set, the first server node (server-0) will be the initializing server node |
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- the initializing server node will have the `--cluster-init` flag appended |
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- all other server nodes will refer to the initializing server node via `--server https://<init-node>:6443` |
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- API-Ports |
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- by default, we expose the API-Port (`6443`) by forwarding traffic from the default server loadbalancer (nginx container) to the server node(s) |
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- port `6443` of the loadbalancer is then mapped to a specific (`--api-port` flag) or a random (default) port on the host system |
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- kubeconfig |
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- if `--kubeconfig-update-default` is set, we use the default loading rules to get the default kubeconfig: |
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- First: kubeconfig specified via the KUBECONFIG environment variable (error out if multiple are specified) |
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- Second: default kubeconfig in home directory (e.g. `$HOME/.kube/config`) |
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- Networking |
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- [by default, k3d creates a new (docker) network for every cluster](./networking) |
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## Multiple server nodes |
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|
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- by default, when `--server` > 1 and no `--datastore-x` option is set, the first server node (server-0) will be the initializing server node |
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- the initializing server node will have the `--cluster-init` flag appended |
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- all other server nodes will refer to the initializing server node via `--server https://<init-node>:6443` |
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|
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## API-Ports |
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|
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- by default, we expose the API-Port (`6443`) by forwarding traffic from the default server loadbalancer (nginx container) to the server node(s) |
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- port `6443` of the loadbalancer is then mapped to a specific (`--api-port` flag) or a random (default) port on the host system |
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|
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## Kubeconfig |
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|
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- if `--kubeconfig-update-default` is set, we use the default loading rules to get the default kubeconfig: |
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- First: kubeconfig specified via the KUBECONFIG environment variable (error out if multiple are specified) |
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- Second: default kubeconfig in home directory (e.g. `$HOME/.kube/config`) |
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|
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## Networking |
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|
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- [by default, k3d creates a new (docker) network for every cluster](./networking) |
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|
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@ -0,0 +1,53 @@ |
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/* |
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Copyright © 2020-2021 The k3d Author(s) |
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|
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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 client |
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import ( |
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"os" |
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"strconv" |
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|
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"github.com/rancher/k3d/v4/pkg/runtimes" |
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"github.com/rancher/k3d/v4/pkg/types/fixes" |
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log "github.com/sirupsen/logrus" |
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) |
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|
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// FIXME: FixCgroupV2 - to be removed when fixed upstream
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func EnableCgroupV2FixIfNeeded(runtime runtimes.Runtime) { |
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if _, isSet := os.LookupEnv(fixes.EnvFixCgroupV2); !isSet { |
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runtimeInfo, err := runtime.Info() |
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if err != nil { |
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log.Warnf("Failed to get runtime information: %+v", err) |
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return |
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} |
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cgroupVersion, err := strconv.Atoi(runtimeInfo.CgroupVersion) |
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if err != nil { |
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log.Debugf("Failed to parse cgroupVersion: %+v", err) |
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return |
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} |
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if cgroupVersion == 2 { |
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log.Debugf("Detected CgroupV2, enabling custom entrypoint (disable by setting %s=false)", fixes.EnvFixCgroupV2) |
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if err := os.Setenv(fixes.EnvFixCgroupV2, "true"); err != nil { |
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log.Errorf("Detected CgroupsV2 but failed to enable k3d's hotfix (try `export %s=true`): %+v", fixes.EnvFixCgroupV2, err) |
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} |
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} |
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} |
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} |
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