通过 Helm Chart 部署 Easysearch

Easysearch 可以通过 Helm 快速部署了，快来看看吧！

Easysearch 的 Chart 仓库地址在这里 https://helm.infinilabs.com。

使用 Helm 部署 Easysearch 有两个前提条件：

• cert-manager

• local-path

我们先按照 Chart 仓库的说明来快速部署一下。

~ helm repo add infinilabs https://helm.infinilabs.com

~ cat << EOF | kubectl apply -n test -f -

apiVersion: cert-manager.io/v1

kind: Issuer

metadata:

name: easysearch-ca-issuer

spec:

selfSigned: {}

---

apiVersion: cert-manager.io/v1

kind: Certificate

metadata:

name: easysearch-ca-certificate

spec:

commonName: easysearch-ca-certificate

duration: 87600h0m0s

isCA: true

issuerRef:

kind: Issuer

name: easysearch-ca-issuer

privateKey:

algorithm: ECDSA

size: 256

renewBefore: 2160h0m0s

secretName: easysearch-ca-secret

EOF

~ helm install easysearch infinilabs/easysearch -n test

执行上面的两个命令之后，查看一下部署情况

~ kubectl get pod -n test

NAME  READY  STATUS  RESTARTS  AGE

easysearch-0  1/1  Running  0  38s

~ kubectl get svc -n test

NAME  TYPE  CLUSTER-IP  EXTERNAL-IP  PORT(S) AGE

easysearch-svc-headless  ClusterIP  None <none> 9200/TCP,9300/TCP  67s

~ kubectl exec -n test easysearch-0 -it -- curl -ku'admin:admin' https://localhost:9200

Defaulted  container  "easysearch"  out  of:  easysearch,  init-config (init)

{

"name"  :  "easysearch-0",

"cluster_name"  :  "infinilabs",

"cluster_uuid"  :  "JwhwwWHMQKy8l6_US7rB1A",

"version"  :  {

"distribution"  :  "easysearch",

"number"  :  "1.5.0",

"distributor"  :  "INFINI Labs",

"build_hash"  :  "5b5b117bc43e6793e7bb0cd8bd83567a5ef35be0",

"build_date"  :  "2023-09-07T14:55:21.232870Z",

"build_snapshot"  :  false,

"lucene_version"  :  "8.11.2",

"minimum_wire_lucene_version"  :  "7.7.0",

"minimum_lucene_index_compatibility_version"  :  "7.7.0"

},

"tagline"  :  "You Know, For Easy Search!"

}

通过上面的验证，我们可以看到 Easysearch 已经部署完成，是不是很方便。

按照 Chart 仓库的指导说明部署的是一个单节点集群，那如果要部署多节点的要怎么办呢？下面让我们来研究一下 Easysearch Chart 包的源码 https://github.com/infinilabs/helm-charts/tree/main/charts/easysearch。

熟悉 Chart 包结构的小伙伴都清楚，Chart 包的变量配置一般都是在 values.yaml 文件中配置的。

我们先来看一下默认的 values.yaml 文件内容（这里只截选了一些可能需要变更的配置，完整内容请查阅源码）：

• pod 副本数以及使用资源的配置

replicaCount: 1

resources:

limits:

cpu: 1000m

memory: 2Gi

requests:

cpu: 1000m

memory: 2Gi

• 使用存储类型以及容量的配置

storageClassName: local-path

dataVolumeStorage: 100Gi

• 集群名、主节点列表以及节点角色配置

clusterName: infinilabs

masterHosts: '"easysearch-0"'

discoverySeedHosts: '"easysearch-0.easysearch-svc-headless"'

nodeRoles: '"master","data","ingest","remote_cluster_client"'

根据研究源码的结果，多节点集群的部署只需要我们调整部署的 pod 副本数、集群名、主节点列表以及节点角色这几个配置。下面让我们来实践一下：

1、集群规划

集群名：es-test

规模：3 主节点 + 3 数据节点 + 2 协调节点

2、Chart 的版本名

主节点：es-test-master

数据节点：es-test-data

协调节点：es-test-coordinate

3、根据节点角色创建不同的 values.yaml 文件

• es-test-master.yaml

replicaCount: 3

clusterName: es-test

masterHosts: '"es-test-master-easysearch-0","es-test-master-easysearch-1","es-test-master-easysearch-2"'

discoverySeedHosts: '"es-test-master-easysearch-0.es-test-master-easysearch-svc-headless","es-test-master-easysearch-1.es-test-master-easysearch-svc-headless","es-test-master-easysearch-2.es-test-master-easysearch-svc-headless"'

nodeRoles: '"master","ingest","remote_cluster_client"'

• es-test-data.yaml

replicaCount: 3

clusterName: es-test

masterHosts: '"es-test-master-easysearch-0","es-test-master-easysearch-1","es-test-master-easysearch-2"'

discoverySeedHosts: '"es-test-master-easysearch-0.es-test-master-easysearch-svc-headless","es-test-master-easysearch-1.es-test-master-easysearch-svc-headless","es-test-master-easysearch-2.es-test-master-easysearch-svc-headless"'

nodeRoles: '"data","ingest","remote_cluster_client"'

• es-test-coordinate.yaml

replicaCount: 2

clusterName: es-test

masterHosts: '"es-test-master-easysearch-0","es-test-master-easysearch-1","es-test-master-easysearch-2"'

discoverySeedHosts: '"es-test-master-easysearch-0.es-test-master-easysearch-svc-headless","es-test-master-easysearch-1.es-test-master-easysearch-svc-headless","es-test-master-easysearch-2.es-test-master-easysearch-svc-headless"'

nodeRoles: ""

4、使用各节点角色的配置文件部署

~ helm install es-test-master infinilabs/easysearch -n test -f es-test-master.yaml

~ helm install es-test-data infinilabs/easysearch -n test -f es-test-data.yaml

~ helm install es-test-coordinate infinilabs/easysearch -n test -f es-test-coordinate.yaml

5、验证

~ kubectl get pod -n test|grep  es-test

es-test-master-easysearch-0  1/1  Running  0  5m57s

es-test-data-easysearch-0  1/1  Running  0  5m29s

es-test-coordinate-easysearch-0  1/1  Running  0  5m10s

es-test-master-easysearch-1  1/1  Running  0  4m57s

es-test-data-easysearch-1  1/1  Running  0  4m29s

es-test-coordinate-easysearch-1  1/1  Running  0  4m10s

es-test-master-easysearch-2  1/1  Running  0  3m56s

es-test-data-easysearch-2  1/1  Running  0  3m29s

~ kubectl exec -n test es-test-master-easysearch-0 -it -- curl -ku'admin:admin' https://localhost:9200/_cat/nodes?v

Defaulted  container  "easysearch"  out  of:  easysearch,  init-config (init)

ip  heap.percent  ram.percent  cpu  load_1m  load_5m  load_15m  node.role  master  name

10.42.0.130  12  63  12  1.53  2.67  2.11  -  -  es-test-coordinate-easysearch-0

10.42.0.136  53  65  52  1.53  2.67  2.11  dir  -  es-test-data-easysearch-1

10.42.0.139  6  63  14  1.53  2.67  2.11  -  -  es-test-coordinate-easysearch-1

10.42.0.133  10  63  14  1.53  2.67  2.11  imr  -  es-test-master-easysearch-1

10.42.0.149  58  65  59  1.53  2.67  2.11  dir  -  es-test-data-easysearch-2

10.42.0.124  53  68  35  1.53  2.67  2.11  imr  *  es-test-master-easysearch-0

10.42.0.127  56  65  46  1.53  2.67  2.11  dir  -  es-test-data-easysearch-0

10.42.0.146  15  63  18  1.53  2.67  2.11  imr  -  es-test-master-easysearch-2

至此，多集群已部署完成。