Elson Rodriguez elsonrodriguez

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048
    
# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)
openssl ecparam -genkey -name secp384r1 -out server.key

Create a new project From the administration page

Select "Task Management" as the project type and hit next

Click "Select"

Enter your project name, in this example we are creating a Deployment workflow

Click submit

Show command line for a given command execed by any proc:

sysdig  -p"%proc.exeline" evt.buffer contains <command>

Quick and Dirty Ceph Cluster

This is a bare-bones guide on how to setup a Ceph cluster using ceph-ansible

This guide assumes:

Ansible is installed on your local machine
Eight Centos 7.2 nodes are provisioned and formatted with XFS
You have ssh and sudo access to your nodes

Ansible Setup

Run e2e conformance tests against current cluster context:

KUBERNETES_CONFORMANCE_TEST=y KUBERNETES_PROVIDER=skeleton go run hack/e2e.go -v --test --test_args="--ginkgo.focus=\[Conformance\]"

When trying to mount a cephfs volume, my command hangs for minutes.

mount -t ceph -o name=admin,secret=xxx==  ceph-mon.ceph.svc.harbor0.group.company.com:6789:/ /mnt/test/
mount error 5 = Input/output error

Output from the mounting system's logs:

[2948295.425025] libceph: client214643 fsid 80802a78-0c63-4146-8040-c93730f92515

	---
	kind: DaemonSet
	apiVersion: extensions/v1beta1
	metadata:
	labels:
	app: hadoop
	daemon: datanode
	name: hadoop-datanode
	namespace: hadoop
	spec:

	kind: StorageClass
	apiVersion: storage.k8s.io/v1beta1
	metadata:
	name: fast
	provisioner: kubernetes.io/gce-pd
	parameters:
	type: pd-ssd

	cupsctl WebInterface=yes

	add Zebra_RAW printer via interface.

	lp -d Zebra_RAW -o raw <path>