Let's look at some basic kubectl output options.
Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).
We can start with:
kubectl get no
Ralph Bankston rbankston
rbankston
/ kubectl.md
Created
December 20, 2019 22:54
— forked from so0k/kubectl.md
Playing with kubectl output
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| apiVersion: v1 | |
| items: | |
| - apiVersion: apiextensions.k8s.io/v1beta1 | |
| kind: CustomResourceDefinition | |
| metadata: | |
| creationTimestamp: null | |
| labels: | |
| component: velero | |
| name: deletebackuprequests.velero.io | |
| spec: |
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| apiVersion: velero.io/v1 | |
| kind: Backup | |
| metadata: | |
| creationTimestamp: "2019-08-10T02:17:41Z" | |
| generation: 1 | |
| name: maybe | |
| namespace: velero | |
| resourceVersion: "140836" | |
| selfLink: /apis/velero.io/v1/namespaces/velero/backups/maybe | |
| uid: d31e24e5-e5c8-4369-b91e-b0b01973535b |
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| time="2019-08-10T02:14:57Z" level=info msg="setting log-level to INFO" | |
| time="2019-08-10T02:14:57Z" level=info msg="Starting Velero server v1.0.0 (72f5cadc3a865019ab9dc043d4952c9bfd5f2ecb)" logSource="pkg/cmd/server/server.go:165" | |
| time="2019-08-10T02:14:57Z" level=info msg="registering plugin" command=/velero kind=BackupItemAction logSource="pkg/plugin/clientmgmt/registry.go:100" name=velero.io/pod | |
| time="2019-08-10T02:14:57Z" level=info msg="registering plugin" command=/velero kind=BackupItemAction logSource="pkg/plugin/clientmgmt/registry.go:100" name=velero.io/pv | |
| time="2019-08-10T02:14:57Z" level=info msg="registering plugin" command=/velero kind=BackupItemAction logSource="pkg/plugin/clientmgmt/registry.go:100" name=velero.io/serviceaccount | |
| time="2019-08-10T02:14:57Z" level=info msg="registering plugin" command=/velero kind=VolumeSnapshotter logSource="pkg/plugin/clientmgmt/registry.go:100" name=velero.io/aws | |
| time="2019-08-10T02:14:57Z" level=info msg="registering plugin" command=/velero kind=VolumeSnapshot |
rbankston
/ k8s-service-account-kubeconfig.sh
Created
April 5, 2019 22:49
— forked from ericchiang/k8s-service-account-kubeconfig.sh
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| #!/bin/bash -e | |
| # Usage ./k8s-service-account-kubeconfig.sh ( namespace ) ( service account name ) | |
| TEMPDIR=$( mktemp -d ) | |
| trap "{ rm -rf $TEMPDIR ; exit 255; }" EXIT | |
| SA_SECRET=$( kubectl get sa -n $1 $2 -o jsonpath='{.secrets[0].name}' ) |
rbankston
/ get-kube-info-with-curl.md
Created
January 11, 2019 18:06
— forked from mcastelino/get-kube-info-with-curl.md
Access Kube API with curl
- https://kubernetes.io/docs/tasks/administer-cluster/access-cluster-api/
- https://thenewstack.io/taking-kubernetes-api-spin/ <-- This is just in case.
There are two ways you can talk to the KUBE API.
Start a kube proxy server which will act as a reverse proxy for the client.
rbankston
/ gist:23dfe1b939ede65274dbef3ad822e0c3
Created
September 20, 2018 16:43
MTU Settings not being set properly
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| root@ip-172-31-0-160:/etc/cni/net.d# date | |
| Thu Sep 20 16:42:20 UTC 2018 | |
| root@ip-172-31-0-160:/etc/cni/net.d# ifconfig | grep -A 2 cali | |
| cali0ab4c0cd5c4 Link encap:Ethernet HWaddr ee:ee:ee:ee:ee:ee | |
| inet6 addr: fe80::ecee:eeff:feee:eeee/64 Scope:Link | |
| UP BROADCAST RUNNING MULTICAST MTU:8981 Metric:1 | |
| -- | |
| cali63b7f4dbf1a Link encap:Ethernet HWaddr ee:ee:ee:ee:ee:ee | |
| inet6 addr: fe80::ecee:eeff:feee:eeee/64 Scope:Link | |
| UP BROADCAST RUNNING MULTICAST MTU:8981 Metric:1 |
rbankston
/ kubernetes_add_service_account_kubeconfig.sh
Created
September 19, 2018 16:28
— forked from innovia/kubernetes_add_service_account_kubeconfig.sh
Create a service account and generate a kubeconfig file for it - this will also set the default namespace for the user
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| #!/bin/bash | |
| set -e | |
| set -o pipefail | |
| # Add user to k8s using service account, no RBAC (must create RBAC after this script) | |
| if [[ -z "$1" ]] || [[ -z "$2" ]]; then | |
| echo "usage: $0 <service_account_name> <namespace>" | |
| exit 1 | |
| fi |
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| { | |
| "defaultAction": "SCMP_ACT_ERRNO", | |
| "archMap": [ | |
| { | |
| "architecture": "SCMP_ARCH_X86_64", | |
| "subArchitectures": [ | |
| "SCMP_ARCH_X86", | |
| "SCMP_ARCH_X32" | |
| ] | |
| }, |
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| # The "crio" table contains all of the server options. | |
| [crio] | |
| # CRI-O reads its storage defaults from the containers/storage configuration | |
| # file, /etc/containers/storage.conf. Modify storage.conf if you want to | |
| # change default storage for all tools that use containers/storage. If you | |
| # want to modify just crio, you can change the storage configuration in this | |
| # file. | |
| # root is a path to the "root directory". CRIO stores all of its data, |
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