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카타코더 k8s - Helm Package Manager

Jmnote (토론 | 기여)님의 2019년 4월 1일 (월) 18:01 판 (→‎See Results)
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1 개요[ | ]

카타코더 Kubernetes - Helm Package Manager
카타코더 Kubernetes
# 🔗 제목
카타코더 Kubernetes/2 e
🡵 카타코더 k8s - Use Kubernetes To Manage Secrets And Passwords
🡵 카타코더 k8s - Deploy Docker Compose Files with Kompose
🡵 카타코더 k8s - Deploying from source onto Kubernetes
🡵 카타코더 k8s - Backup and Restore with Heptio Ark
🡵 카타코더 k8s - Helm Package Manager
🡵 카타코더 k8s - Installing Weave Scope on Kubernetes
🡵 카타코더 k8s - Getting Started with Kubeless

2 Install Helm[ | ]

master:~$ curl -sLO https://storage.googleapis.com/kubernetes-helm/helm-v2.8.2-linux-amd64.tar.gz
master:~$ tar -xvf helm-v2.8.2-linux-amd64.tar.gz
linux-amd64/
linux-amd64/helm
linux-amd64/README.md
linux-amd64/LICENSE

master:~$ mv linux-amd64/helm /usr/local/bin/
master:~$ helm version --client
Client: &version.Version{SemVer:"v2.8.2", GitCommit:"a80231648a1473929271764b920a8e346f6de844", GitTreeState:"clean"}

master:~$ helm init
Creating /root/.helm
Creating /root/.helm/repository
Creating /root/.helm/repository/cache
Creating /root/.helm/repository/local
Creating /root/.helm/plugins
Creating /root/.helm/starters
Creating /root/.helm/cache/archive
Creating /root/.helm/repository/repositories.yaml
Adding stable repo with URL: https://kubernetes-charts.storage.googleapis.com
Adding local repo with URL: http://127.0.0.1:8879/charts
＄HELM_HOME has been configured at /root/.helm.

Tiller (the Helm server-side component) has been installed into your Kubernetes Cluster.

Please note: by default, Tiller is deployed with an insecure 'allow unauthenticated users' policy.
For more information on securing your installation see: https://docs.helm.sh/using_helm/#securing-your-helm-installation
Happy Helming!

master:~$ helm repo update
Hang tight while we grab the latest from your chart repositories...
...Skip local chart repository
...Successfully got an update from the "stable" chart repository
Update Complete. ⎈ Happy Helming!⎈

3 Search For Chart[ | ]

master:~$ helm search redis
NAME                                    CHART VERSION   APP VERSION     DESCRIPTION
stable/prometheus-redis-exporter        1.0.2           0.28.0          Prometheus exporter for Redis metrics
stable/redis                            6.4.3           4.0.14          Open source, advanced key-value store. It is of...
stable/redis-ha                         3.3.3           5.0.3           Highly available Kubernetes implementation of R...
stable/sensu                            0.2.3           0.28            Sensu monitoring framework backed by the Redis ...

master:~$ helm inspect stable/redis
apiVersion: v1
appVersion: 4.0.14
description: Open source, advanced key-value store. It is often referred to as a data
  structure server since keys can contain strings, hashes, lists, sets and sorted
  sets.
engine: gotpl
home: http://redis.io/
icon: https://bitnami.com/assets/stacks/redis/img/redis-stack-220x234.png
keywords:
- redis
- keyvalue
- database
maintainers:
- email: containers@bitnami.com
  name: Bitnami
- email: cedric@desaintmartin.fr
  name: desaintmartin
name: redis
sources:
- https://github.com/bitnami/bitnami-docker-redis
version: 6.4.3

---
## Global Docker image parameters
## Please, note that this will override the image parameters, including dependencies, configured to use the global value
## Current available global Docker image parameters: imageRegistry and imagePullSecrets
##
# global:
#   imageRegistry: myRegistryName
#   imagePullSecrets:
#     - myRegistryKeySecretName

## Bitnami Redis image version
## ref: https://hub.docker.com/r/bitnami/redis/tags/
##
image:
  registry: docker.io
  repository: bitnami/redis
  ## Bitnami Redis image tag
  ## ref: https://github.com/bitnami/bitnami-docker-redis#supported-tags-and-respective-dockerfile-links
  ##
  tag: 4.0.14
  ## Specify a imagePullPolicy
  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
  ##
  pullPolicy: Always
  ## Optionally specify an array of imagePullSecrets.
  ## Secrets must be manually created in the namespace.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
  ##
  # pullSecrets:
  #   - myRegistryKeySecretName

## Cluster settings
cluster:
  enabled: true
  slaveCount: 1

networkPolicy:
  ## Specifies whether a NetworkPolicy should be created
  ##
  enabled: false
...
## Sysctl InitContainer
## used to perform sysctl operation to modify Kernel settings (needed sometimes to avoid warnings)
sysctlImage:
  enabled: false
  command: []
  registry: docker.io
  repository: bitnami/minideb
  tag: latest
  pullPolicy: Always
  ## Optionally specify an array of imagePullSecrets.
  ## Secrets must be manually created in the namespace.
  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
  ##
  # pullSecrets:
  #   - myRegistryKeySecretName
  mountHostSys: false
  resources: {}

4 Deploy Redis[ | ]

master:~$ helm install stable/redis
NAME:   foiled-shrimp
LAST DEPLOYED: Sat Mar 23 19:47:33 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1beta2/StatefulSet
NAME                        DESIRED  CURRENT  AGE
foiled-shrimp-redis-master  1        1        0s

==> v1/Pod(related)
NAME                                        READY  STATUS             RESTARTS  AGE
foiled-shrimp-redis-slave-769765cb44-npmfd  0/1    ContainerCreating  0         0s
foiled-shrimp-redis-master-0                0/1    Pending            0         0s

==> v1/Secret
NAME                 TYPE    DATA  AGE
foiled-shrimp-redis  Opaque  1     0s

==> v1/ConfigMap
NAME                        DATA  AGE
foiled-shrimp-redis         3     0s
foiled-shrimp-redis-health  3     0s

==> v1/Service
NAME                        TYPE       CLUSTER-IP      EXTERNAL-IP  PORT(S)   AGE
foiled-shrimp-redis-master  ClusterIP  10.107.151.156  <none>       6379/TCP  0s
foiled-shrimp-redis-slave   ClusterIP  10.96.167.183   <none>       6379/TCP  0s

==> v1beta1/Deployment
NAME                       DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
foiled-shrimp-redis-slave  1        1        1           0          0s


NOTES:
** Please be patient while the chart is being deployed **
Redis can be accessed via port 6379 on the following DNS names from within your cluster:

foiled-shrimp-redis-master.default.svc.cluster.local for read/write operations
foiled-shrimp-redis-slave.default.svc.cluster.local for read-only operations


To get your password run:

    export REDIS_PASSWORD=$(kubectl get secret --namespace default foiled-shrimp-redis -o jsonpath="{.data.redis-password}" | base64 --decode)

To connect to your Redis server:

1. Run a Redis pod that you can use as a client:

   kubectl run --namespace default foiled-shrimp-redis-client --rm --tty -i --restart='Never' \
    --env REDIS_PASSWORD=$REDIS_PASSWORD \
   --image docker.io/bitnami/redis:4.0.14 -- bash

2. Connect using the Redis CLI:
   redis-cli -h foiled-shrimp-redis-master -a $REDIS_PASSWORD
   redis-cli -h foiled-shrimp-redis-slave -a $REDIS_PASSWORD

To connect to your database from outside the cluster execute the following commands:

    kubectl port-forward --namespace default svc/foiled-shrimp-redis 6379:6379 &
    redis-cli -h 127.0.0.1 -p 6379 -a $REDIS_PASSWORD

master:~$ helm ls
NAME            REVISION        UPDATED                         STATUS          CHART           NAMESPACE
foiled-shrimp   1               Sat Mar 23 19:47:33 2019        DEPLOYED        redis-6.4.3     default

5 See Results[ | ]

master:~$ kubectl get all
NAME                                             READY     STATUS    RESTARTS   AGE
pod/foiled-shrimp-redis-master-0                 0/1       Pending   0          53s
pod/foiled-shrimp-redis-slave-769765cb44-npmfd   0/1       Running   1          53s

NAME                                 TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
service/foiled-shrimp-redis-master   ClusterIP   10.107.151.156   <none>        6379/TCP   53s
service/foiled-shrimp-redis-slave    ClusterIP   10.96.167.183    <none>        6379/TCP   53s
service/kubernetes                   ClusterIP   10.96.0.1        <none>        443/TCP    5m

NAME                                        DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/foiled-shrimp-redis-slave   1         1         1            0           53s

NAME                                                   DESIRED   CURRENT   READY     AGE
replicaset.apps/foiled-shrimp-redis-slave-769765cb44   1         1         0         53s

NAME                                          DESIRED   CURRENT   AGE
statefulset.apps/foiled-shrimp-redis-master   1         1         53s

master:~$ cat pv.yaml

kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-volume1
  labels:
    type: local
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data1"
---
kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-volume2
  labels:
    type: local
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data2"
---
kind: PersistentVolume
apiVersion: v1
metadata:
  name: pv-volume3
  labels:
    type: local
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data3"

master:~$ kubectl apply -f pv.yaml
persistentvolume/pv-volume1 created
persistentvolume/pv-volume2 created
persistentvolume/pv-volume3 created

master:~$ chmod 777 -R /mnt/data*
master:~$ helm install --name my-release stable/redis
NAME:   my-release
LAST DEPLOYED: Sat Mar 23 19:49:13 2019
NAMESPACE: default
STATUS: DEPLOYED

RESOURCES:
==> v1/ConfigMap
NAME                     DATA  AGE
my-release-redis         3     1s
my-release-redis-health  3     1s

==> v1/Service
NAME                     TYPE       CLUSTER-IP     EXTERNAL-IP  PORT(S)   AGE
my-release-redis-master  ClusterIP  10.101.33.28   <none>       6379/TCP  1s
my-release-redis-slave   ClusterIP  10.101.238.25  <none>       6379/TCP  1s

==> v1beta1/Deployment
NAME                    DESIRED  CURRENT  UP-TO-DATE  AVAILABLE  AGE
my-release-redis-slave  1        1        1           0          1s

==> v1beta2/StatefulSet
NAME                     DESIRED  CURRENT  AGE
my-release-redis-master  1        1        1s

==> v1/Pod(related)
NAME                                     READY  STATUS             RESTARTS  AGE
my-release-redis-slave-56f458bb55-fc2f9  0/1    ContainerCreating  0         1s
my-release-redis-master-0                0/1    ContainerCreating  0         1s

==> v1/Secret
NAME              TYPE    DATA  AGE
my-release-redis  Opaque  1     1s


NOTES:
** Please be patient while the chart is being deployed **
Redis can be accessed via port 6379 on the following DNS names from within your cluster:

my-release-redis-master.default.svc.cluster.local for read/write operations
my-release-redis-slave.default.svc.cluster.local for read-only operations


To get your password run:

    export REDIS_PASSWORD=$(kubectl get secret --namespace default my-release-redis -o jsonpath="{.data.redis-password}" | base64 --decode)

To connect to your Redis server:

1. Run a Redis pod that you can use as a client:

   kubectl run --namespace default my-release-redis-client --rm --tty -i --restart='Never' \
    --env REDIS_PASSWORD=$REDIS_PASSWORD \
   --image docker.io/bitnami/redis:4.0.14 -- bash

2. Connect using the Redis CLI:
   redis-cli -h my-release-redis-master -a $REDIS_PASSWORD
   redis-cli -h my-release-redis-slave -a $REDIS_PASSWORD

To connect to your database from outside the cluster execute the following commands:

    kubectl port-forward --namespace default svc/my-release-redis 6379:6379 &
    redis-cli -h 127.0.0.1 -p 6379 -a $REDIS_PASSWORD
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