Luis's Cacho Blog News

Fix a borg lock issue

Sat, 24 Jun 2023 01:00:00 +0200

When you get the error:

# Example command

# ERROR output
borg info ssh://asdbqw55@a3rbqwrx.repo.borg.com/./repo
Enter passphrase for key ssh://asdbqw55@a3rbqwrx.repo.borg.com/./repo:
Failed to create/acquire the lock /Users/lcacho/.cache/borg/34961807af9e356640e09e9973ef4664598ee6706e4c2bccc4b2770c15e09d2b/lock.exclusive (timeout).

# Fix
borg break-lock ssh://asdbqw55@a3rbqwrx.repo.borg.com/./repo

References:

¹ Borg Break Lock

https://borgbackup.readthedocs.io/en/stable/usage/lock.html#borg-break-lock ↩︎

cURL to a specific target hostname

Sat, 24 Jun 2023 01:00:00 +0200

# Mockup command
curl -kv -H "Host: " ://:

# Example command
curl -kv -H "Host: myapp.apps.example.com" https://152.10.10.1:443

Update all the git submodules

Fri, 23 Jun 2023 01:00:00 +0200

# Example command
git submodule foreach git pull

References:

¹How to update submodules in git?

https://stackoverflow.com/questions/33714063/how-to-update-submodules-in-git ↩︎

How to find the last element in an array using jsonpath

Fri, 23 Jun 2023 01:00:00 +0200

- name: Get Operator StartingCSV - {{ operator_name }}
 command: oc get packagemanifest {{ operator_name }} -n openshift-marketplace -o jsonpath='{.status.channels[-1:].currentCSV}'
 changed_when: false
 register: reg_operator_csv

Trigger a scheduled job manually on Kubernetes

Fri, 23 Jun 2023 01:00:00 +0200

# Mockup command
kubectl create job --from=cronjob/  -n

References:

¹How can I trigger a Kubernetes Scheduled Job manually?

https://stackoverflow.com/questions/40401795/how-can-i-trigger-a-kubernetes-scheduled-job-manually ↩︎

League Fees

Fri, 16 Jun 2023 01:00:00 +0200

Rules

Fri, 16 Jun 2023 01:00:00 +0200

Table of Contents

Rules that changed from 2022 to 2023 Season

Fri, 16 Jun 2023 01:00:00 +0200

Table of Contents

Sum numbers over loop

Wed, 30 Nov 2022 00:00:00 +0200

- set_fact:
 total: "{{ total|default(0)|int + item|int }}"
 loop:
 - 1
 - 4
 - 3

- debug: var=total

References:

¹ Sum numbers over loop

https://stackoverflow.com/questions/50543108/ansible-can-i-sum-numbers-over-loop ↩︎

Today I Learned

Mon, 21 Nov 2022 00:00:00 +0200

2022 Fantasy Draft

Sun, 28 Aug 2022 18:00:00 +0200

How to test the Openshift Cluster and Machine Autoscaler

Tue, 16 Aug 2022 00:00:00 +0200

oc new-project work-queue
echo 'apiVersion: batch/v1
kind: Job
metadata:
generateName: work-queue-
spec:
template:
spec:
tolerations:
- effect: NoSchedule
key: node-role.kubernetes.io/infra
value: reserved
- effect: NoExecute
key: node-role.kubernetes.io/infra
value: reserved
containers:
- name: work
image: busybox
command: ["sleep", "300"]
resources:
requests:
memory: 2Gi
cpu: 4
restartPolicy: Never
parallelism: 50
completions: 250' | oc create -f - -n work-queue
oc get jobs -n work-queue
oc get pods -n work-queue
oc get machineset -n openshift-machine-api
oc get machines -n openshift-machine-api
oc get nodes
oc delete project work-queue

How to Retrieve secrets values

Tue, 16 Aug 2022 00:00:00 +0200

oc get secret my-secret -n my-project --template={{.data.my-secret-key}} | base64 -d
oc get secret my-secret -n my-project -o go-template --template="{{.data.my-secret-key|base64decode}}"
oc extract secrets/my-secret -n my-project
oc get secret my-secret -n my-project -o jsonpath="{.data['tls\.key']}" | base64 -d

Delete Openshift Project

Tue, 16 Aug 2022 00:00:00 +0200

Issue, can’t delete a namespace/project and is stuck in a “Terminating” status

oc delete project fishbone
oc get projects fishbone
NAME DISPLAY NAME STATUS
fishbone Fishbone Terminating

Solution

Define the namespace/project to delete

export NAMESPACE=fishbone


Cleanup the finalizers section from the namespace definition and define a json file with that
`shell
get namespace $NAMESPACE -o=json | jq '.spec = {"finalizers":[]}' > $NAMESPACE.json
piVersion": "v1",
ind": "Namespace",
etadata": {
nnotations":
penshift.io/description": "",
penshift.io/display-name": "Fishbone",
penshift.io/requester": "system:admin",
penshift.io/sa.scc.mcs": "s0:c24,c14",
penshift.io/sa.scc.supplemental-groups": "1000580000/10000",
penshift.io/sa.scc.uid-range": "1000580000/10000"
reationTimestamp": "2021-02-20T03:29:59Z",
eletionTimestamp": "2021-02-20T03:31:35Z",
ame": "fishbone",
esourceVersion": "270664",
elfLink": "/api/v1/namespaces/fishbone",
id": "885c4440-6f05-4e72-a103-28e61705406f"
pec": {
inalizers": [
ubernetes"
tatus": {
onditions": [
hase": "Terminating"


Apply the json file from the previous step to delete the finalizers and therefore the deletion of the namespace/project
`shell
rl -k -H "authorization: Bearer $(oc whoami --show-token)" -H "Content-Type: application/json" -X PUT --data-binary @$NAMESPACE.json $(oc whoami --show-server)/api/v1/namespaces/$NAMESPACE/finalize


Verify that the namspace/project has been deleted
`shell
get projects $NAMESPACE
ror from server (NotFound): namespaces "fishbone" not found

References:

Kubernetes Advanced Topics¹
Kubernetes Namespace Stuck²
Red Hat article[^3]

How to list the taints on kubernetes nodes

Mon, 15 Aug 2022 00:00:00 +0200

oc get nodes -o json | jq '.items[].spec.taints'
oc get nodes -o json | jq '.items[] | {node_name:.metadata.name,taints:.spec.taints[]?}
oc get nodes -o=custom-columns=NAME:.metadata.name,TAINTS:.spec.taints
get nodes -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.spec.taints}{"\n"}{end}'

References:

¹ StackOverflow

https://stackoverflow.com/questions/43379415/how-can-i-list-the-taints-on-kubernetes-nodes ↩︎

Rules that changed from 2021 to 2022 Season

Thu, 04 Aug 2022 00:00:00 +0200

Table of Contents

Open-Source

Mon, 06 Jun 2022 00:00:00 +0200

Rules

Fri, 03 Jun 2022 00:00:00 +0200

Table of Contents

2022 Season Overview of Nerd Football League

Fri, 03 Jun 2022 00:00:00 +0200

Table of Contents

2021 Fantasy Draft

Sun, 05 Sep 2021 17:00:00 +0200