$ helm repo list |grep bitnami
如果没有，还需额外增加此仓库
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo update
2、下载ElasticSearch的chart包
helm pull bitnami/elasticsearch --untar --version 19.10.2
3、安装ElasticSearch
注意：要保证K8S所有节点内存大于4G，否则ElasticSearch跑不动
(1)因为资源有限，所以调整内存、副本等信息。并且定义SC
[root@master01 ~]# cd elasticsearch
[root@master01 elasticsearch]# vi values.yaml
定义 storageClass: "nfs-client"
搜索 memory: 2048Mi 改为 memory: 1024Mi
搜索 heapSize: 1024m 改为 heapSize: 512m
搜索 replicaCount: 2 改为 replicaCount: 1 ##如果是生产环境不要改
第20行处定义SC，修改后内容如下：
storageClass: "nfs-client"
第186-189行替换国外镜像为国内镜像
# 国外镜像
186 image:
187 registry: docker.io
188 repository: bitnami/elasticsearch
189 tag: 8.8.1-debian-11-r0
# 国内镜像
186 image:
187 registry: registry.cn-hangzhou.aliyuncs.com
188 repository: abroad_images/elasticsearch
189 tag: 8.8.1-debian-11-r0
第829行处修改memory，修改后内容如下：
memory: 1024Mi
第836行处修改heapSize，修改后内容如下：
heapSize: 512m
第1097行处修改replicaCount，修改后内容如下：
replicaCount: 1
第1836-1839行替换国外镜像为国内镜像
# 国外镜像
1836 image:
1837 registry: docker.io
1838 repository: bitnami/elasticsearch-exporter
1839 tag: 1.5.0-debian-11-r106
# 国内镜像
1836 image:
1837 registry: registry.cn-hangzhou.aliyuncs.com
1838 repository: abroad_images/elasticsearch-exporter
1839 tag: 1.5.0-debian-11-r106
第2169-2172行替换国外镜像为国内镜像
# 国外镜像
2169 image:
2170 registry: docker.io
2171 repository: bitnami/bitnami-shell
2172 tag: 11-debian-11-r123
# 国内镜像
2169 image:
2170 registry: registry.cn-hangzhou.aliyuncs.com
2171 repository: abroad_images/bitnami-shell
2172 tag: 11-debian-11-r123
(2)安装
[root@master01 elasticsearch]# helm install skywalking-es .
NAME: skywalking-es
LAST DEPLOYED: Fri Nov 3 21:06:13 2023
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: elasticsearch
CHART VERSION: 19.10.2
APP VERSION: 8.8.1
-------------------------------------------------------------------------------
WARNING
Elasticsearch requires some changes in the kernel of the host machine to
work as expected. If those values are not set in the underlying operating
system, the ES containers fail to boot with ERROR messages.
More information about these requirements can be found in the links below:
https://www.elastic.co/guide/en/elasticsearch/reference/current/file-descriptors.html
https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html
This chart uses a privileged initContainer to change those settings in the Kernel
by running: sysctl -w vm.max_map_count=262144 && sysctl -w fs.file-max=65536
** Please be patient while the chart is being deployed **
Elasticsearch can be accessed within the cluster on port 9200 at skywalking-es-elasticsearch.default.svc.cluster.local
To access from outside the cluster execute the following commands:
kubectl port-forward --namespace default svc/skywalking-es-elasticsearch 9200:9200 &
curl http://127.0.0.1:9200/
(3)在master01节点上查看pod
[root@master01 elasticsearch]# kubectl get po
NAME READY STATUS RESTARTS AGE
skywalking-es-elasticsearch-coordinating-0 1/1 Running 0 11h
skywalking-es-elasticsearch-data-0 1/1 Running 0 11h
skywalking-es-elasticsearch-data-1 1/1 Running 0 11h
skywalking-es-elasticsearch-ingest-0 1/1 Running 0 11h
skywalking-es-elasticsearch-ingest-1 1/1 Running 0 11h
skywalking-es-elasticsearch-master-0 1/1 Running 0 11h
skywalking-es-elasticsearch-master-1 1/1 Running 0 11h
(4)在master01节点上查看svc
[root@master01 elasticsearch]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 2d14h
skywalking-es-elasticsearch ClusterIP 10.0.92.27 <none> 9200/TCP,9300/TCP 11h
skywalking-es-elasticsearch-coordinating-hl ClusterIP None <none> 9200/TCP,9300/TCP 11h
skywalking-es-elasticsearch-data-hl ClusterIP None <none> 9200/TCP,9300/TCP 11h
skywalking-es-elasticsearch-ingest-hl ClusterIP None <none> 9200/TCP,9300/TCP 11h
skywalking-es-elasticsearch-master-hl ClusterIP None <none> 9200/TCP,9300/TCP 11h
(5)访问es
[root@master01 elasticsearch]# curl 10.0.92.27:9200
{
"name" : "skywalking-es-elasticsearch-coordinating-0",
"cluster_name" : "elastic",
"cluster_uuid" : "7l6jGZ7JTBOVi5f4lFa7Jw",
"version" : {
"number" : "8.8.1",
"build_flavor" : "default",
"build_type" : "tar",
"build_hash" : "f8edfccba429b6477927a7c1ce1bc6729521305e",
"build_date" : "2023-06-05T21:32:25.188464208Z",
"build_snapshot" : false,
"lucene_version" : "9.6.0",
"minimum_wire_compatibility_version" : "7.17.0",
"minimum_index_compatibility_version" : "7.0.0"
},
"tagline" : "You Know, for Search"
}