deploy.sh

#!/bin/bash

# --------------------------- color config ---------------------------
GREEN='\033[0;32m'
LB='\033[1;34m' # light blue
YE='\033[1;33m' # yellow
NC='\033[0m' # No Color
# --------------------------------------------------------------------

# ------------------------ dependency check --------------------------
check=`kubectl get storageclasses.storage.k8s.io | grep -q "(default)"`
if [ -z "$check" ]
then
  echo -e "[${LB}Info${NC}] storage class available"
else
  echo -e "[${YE}Warn${NC}] no storage class found, try to deploy localstorage provisioner"
  kubectl apply -f k8s/storage-class.yaml
fi
# --------------------------------------------------------------------

# -------------------------- deployment menu -------------------------
logForwarder=1
read -p  "Which log forwarder do you want to use
1: Fluentbit
2: Fluentd
(default:1) promt with [ENTER]:" inputLogForwarder
logForwarder="${inputLogForwarder:-$logForwarder}"

diskSpace=2
read -p  "How many gigabyte diskspace do you want per node?(default:2) promt with [ENTER]:" inputDiskSpace
diskSpace="${inputDiskSpace:-$diskSpace}"
echo -e "[${LB}Info${NC}] elastic pvc requires ${diskSpace}Gi diskspace"
# --------------------------------------------------------------------

# -------------------------- deployment start ------------------------

echo -e "[${LB}Info${NC}] Install custom resource definitions and the operator with its RBAC rules"

kubectl apply -f https://download.elastic.co/downloads/eck/1.2.1/all-in-one.yaml

kubectl config set-context --current --namespace=elastic-system

echo -e "[${LB}Info${NC}] deploy elasticsearch"

cat <<EOF | kubectl apply -f -
apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
  name: quickstart
spec:
  version: 7.9.0
  http:
    tls:
      selfSignedCertificate:
        disabled: true 
  nodeSets:
  - name: default
    count: 1
    config:
      node.master: true
      node.data: true
      node.ingest: true
      node.store.allow_mmap: false
    volumeClaimTemplates:
      - metadata:
          name: elasticsearch-data
        spec:
          accessModes:
          - ReadWriteOnce
          resources:
            requests:
              storage: ${diskSpace}Gi
EOF

echo -e "[${LB}Info${NC}] deploy kibana"

cat <<EOF | kubectl apply -f -
apiVersion: kibana.k8s.elastic.co/v1
kind: Kibana
metadata:
  name: quickstart
spec:
  http:
    tls:
      selfSignedCertificate:
        disabled: true 
  version: 7.9.0
  count: 1
  elasticsearchRef:
    name: quickstart
EOF

if [ $logForwarder -eq 1 ]; then
  echo -e "[${LB}Info${NC}] deploy fluentd"
  kubectl apply -f fluentbit/fluent-bit-configmap.yaml 
  kubectl apply -f fluentbit/fluent-bit-service-account.yaml 
  kubectl apply -f fluentbit/fluent-bit-role.yaml
  # rolebinding is tied to the namespace "elastic-system"
  kubectl apply -f fluentbit/fluent-bit-role-binding.yaml 
  kubectl apply -f fluentbit/fluent-bit-ds.yaml 

  kubectl rollout status daemonset.apps/fluent-bit

elif [ $logForwarder -eq 2 ]; then
  echo -e "[${LB}Info${NC}] deploy fluentd"
  kubectl apply -f fluentd/fluentd-cm.yaml 
  kubectl apply -f fluentd/fluentd-daemonset.yaml 

  kubectl rollout status daemonset.apps/fluentd
fi
# --------------------------------------------------------------------


# ---------------------- credentials and access ----------------------
elasticpw=`kubectl get secret quickstart-es-elastic-user -o go-template='{{.data.elastic | base64decode}}'`
echo -e "[${LB}Info${NC}] here are your kibana credentials. User is ${LB}elastic${NC}, Password ${LB}${elasticpw}${NC}"


echo -e "[${LB}Info${NC}] waiting for deployment of kibana and elasticsearch (takes a cuple of minutes)"
kubectl rollout status deployment/quickstart-kb

kubectl port-forward service/quickstart-kb-http 5601
# --------------------------------------------------------------------

# --------------------- elastic retension config----------------------
echo -e 'Define log retentionlifetimes with the ilm function
Use the buildin dev console for execution

PUT _ilm/policy/baremetal-ilm
{
  "policy": {
    "phases": {
      "hot": {
        "min_age": "0ms",
        "actions": {
          "rollover": {
            "max_age": "7d",
            "max_size": "4gb"
          },
          "set_priority": {
            "priority": 100
          }
        }
      },
      "delete": {
        "min_age": "1d",
        "actions": {
          "delete": {
            "delete_searchable_snapshot": true
          }
        }
      }
    }
  }
}

PUT _index_template/baremetal-template
{
  "index_patterns": ["baremetal-*"], 
  "template": {
    "settings": {
      "number_of_shards": 1,
      "number_of_replicas": 1,
      "index.lifecycle.name": "baremetal-ilm", 
      "index.lifecycle.rollover_alias": "baremetal-rollover" 
    }
  }
}

PUT baremetal*/_settings 
{
  "index": {
    "lifecycle": {
      "name": "baremetal-ilm"
    }
  }
}
'
# --------------------------------------------------------------------