skywalking-java/kubernetes/elasticsearch/03-statefulset.yml

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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: elasticsearch
namespace: skywalking
labels:
service: elasticsearch
spec:
serviceName: elasticsearch
# NOTE: This is number of nodes that we want to run
# you may update this
replicas: 3
selector:
matchLabels:
service: elasticsearch
template:
metadata:
labels:
service: elasticsearch
spec:
terminationGracePeriodSeconds: 300
initContainers:
# NOTE:
# This is to fix the permission on the volume
# By default elasticsearch container is not run as
# non root user.
# https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html#_notes_for_production_use_and_defaults
- name: fix-the-volume-permission
image: busybox
command:
- sh
- -c
- chown -R 1000:1000 /usr/share/elasticsearch/data
securityContext:
privileged: true
volumeMounts:
- name: data
mountPath: /usr/share/elasticsearch/data
# NOTE:
# To increase the default vm.max_map_count to 262144
# https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html#docker-cli-run-prod-mode
- name: increase-the-vm-max-map-count
image: busybox
command:
- sysctl
- -w
- vm.max_map_count=262144
securityContext:
privileged: true
# To increase the ulimit
# https://www.elastic.co/guide/en/elasticsearch/reference/current/docker.html#_notes_for_production_use_and_defaults
- name: increase-the-ulimit
image: busybox
command:
- sh
- -c
- ulimit -n 65536
securityContext:
privileged: true
containers:
- name: elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch-oss:6.3.2
ports:
- containerPort: 9200
name: http
- containerPort: 9300
name: tcp
# NOTE: you can increase this resources
resources:
requests:
memory: 8Gi
limits:
memory: 16Gi
env:
# NOTE: the cluster name; update this
- name: cluster.name
value: elasticsearch-cluster
- name: node.name
valueFrom:
fieldRef:
fieldPath: metadata.name
# NOTE: This will tell the elasticsearch node where to connect to other nodes to form a cluster
- name: discovery.zen.ping.unicast.hosts
value: "elasticsearch-0.elasticsearch.skywalking.svc.cluster.local,elasticsearch-1.elasticsearch.skywalking.svc.cluster.local,elasticsearch-2.elasticsearch.skywalking.svc.cluster.local"
# NOTE: You can increase the heap size
- name: ES_JAVA_OPTS
value: -Xms4g -Xmx4g
volumeMounts:
- name: data
mountPath: /usr/share/elasticsearch/data
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes:
- ReadWriteOnce
storageClassName: ssd
# NOTE: You can increase the storage size
resources:
requests:
storage: 500Gi