sudhirpandey

RHEL 6.3 veewee templates for vagrant use

These templates can be used to feed to veewee to spin up an el6 basebox for use with vagrant.

There are some coded values in definition.rb and ks.cfg which point at Yale-ishness. Amend to point at local RHEL iso/yum repo.

Built successfully with veewee 0.2.3, vagrant 1.0.3, Virtualbox 4.1.18.

Config Management

sudhirpandey

Installing Graphite:

Graphite does two things:

1. Store numeric time-series data
2. Render graphs of this data on demand

What Graphite does not do is collect data for you, however there are some tools out there that know

sudhirpandey

oc delete all --selector=metrics-infra -n openshift-infra
 oc delete secrets --selector=metrics-infra -n openshift-infra
 oc delete sa --selector=metrics-infra -n openshift-infra
 oc delete templates --selector=metrics-infra -n openshift-infra
 oc delete sa metrics-deployer -n openshift-infra
 oc delete secret metrics-deployer -n openshift-infra
 systemctl restart docker
__________
 oc get pvc
 oc delete pvc metrics-cassandra-

sudhirpandey

helm del --purge prometheus --tiller-namespace=helmtest
helm ls --all prometheus --tiller-namespace=helmtest
helm install --name prometheus stable/prometheus --set nodeExporter.enabled=false --tiller-namespace=helmtest
helm del --purge prometheus --tiller-namespace=helmtest
helm install --name prometheus stable/prometheus --set nodeExporter.enabled=false --tiller-namespace=helmtest
helm del --purge prometheus --tiller-namespace=helmtest
helm install --name prometheus stable/prometheus --set nodeExporter.enabled=false,server.persistentVolume.storageClass=slow --tiller-namespace=helmtest
helm install  stable/grafana --tiller-namespace=helmtest  --set server.persistentVolume.size=false

sudhirpandey

gcloud beta compute instances create osd1 --machine-type=n1-standard-1 --image=centos-7-ocp-gold-image --network-interface subnet=default --network-interface subnet=backend-storage,no-address --tags=osds,ceph,allowinternal,allowssh --zone=europe-west2-a

sudhirpandey

!/bin/bash


array=(083kuvhb 56ghubyf mdaaepif)
RANDOM=$$$(date +%s)

for index in $(curl --key /etc/elasticsearch/secret/admin-key  --cert /etc/elasticsearch/secret/admin-cert --cacert /etc/elasticsearch/secret/admin-ca -XGET https://localhost:9200/_cat/shards | grep UNASSIGNED | awk '{print $1}'| sort | uniq); do
  for shard in $(curl --key /etc/elasticsearch/secret/admin-key  --cert /etc/elasticsearch/secret/admin-cert --cacert /etc/elasticsearch/secret/admin-ca -XGET https://localhost:9200/_cat/shards | grep $index |grep UNASSIGNED | awk '{print $2}'); do

   i=${array[$RANDOM % ${#array[@]} ]}

sudhirpandey

systemctl restart origin-node.service
journalctl -f -u origin-node.service |grep  "skydns: failure to forward request"

and this should work on each host

nslookup docker-registry.default.svc.cluster.local
Server:		10.89.10.46
Address:	10.89.10.46#53

Name:	docker-registry.default.svc.cluster.local

sudhirpandey

Kubectl output options

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

sudhirpandey

#expose console from 443
oc create route reencrypt master --service kubernetes --port 443 -n default

#nested loops , tags count in IS
oc get is --template='{{range $i, $is:=.items}}{{ $total :=0 }}{{ range $index, $element :=$is.status.tags }}{{if eq $element.tag "latest"}}{{$is.metadata.name}}{{"\t"}}{{ $index }}{{end}}{{end}}{{"\n"}}{{end}}'

get complex labels
oc get nodes --template='{{ with $i := index .items 0 }}{{ index $i.metadata.labels "failure-domain.beta.kubernetes.io/region" }}{{ end }}'

#patchin resource limits

sudhirpandey

# Example scrape config for pods
    #
    # The relabeling allows the actual pod scrape endpoint to be configured via the
    # following annotations:
    #
    # * `prometheus.io/scrape`: Only scrape pods that have a value of `true`
    # * `prometheus.io/path`: If the metrics path is not `/metrics` override this. This
    #    will be the same for every container in the pod that is scraped.
    # * this will scrape every container in a pod with `prometheus.io/scrape` set to true and the
        port is name `metrics` in the container