本文主要讲解使用Helm在K8S中部署MatterMost，涉及到一些坑需要修改chart模板文件。。
Mattermost
Mattermost是为开发团队推动创新而构建的开源消息传递平台。支持私有云部署在不牺牲隐私的情况下提供了现代通信的优势。Mattermost为企业提供了自治能力和可扩展性，使他们能够在满足需求的同时提高生产力IT和安全团队的要求。
Mattermost可轻松与流行的DevOps工具集成，例如Jira，Jenkins，GitLab，Trac，Redmine和Bitbucket。免费提供数十种开源集成，包括交互式bot应用程序（例如Hubot和whatmost-bot）以及其他通信工具。
Mattermost支持DevOps工作流程,许多DevOps工作流程都依赖实时协作。团队在关键时刻使用消息传递来提高效率—设置基础架构，合并代码分支或解决紧急错误。Mattermost统一了人员，工具，系统数据和自动化，以帮助您的组织发挥最佳性能。
Mattermost驱动DevOps生命周期
消息传递是DevOps团队合作的核心。这是工作流融合，进行关键交互并制定决策的地方。Mattermost通过实现与团队现有的DevOps工具和系统的集成，使您的工作流协作更加强大。
Plan计划：最重要的是有关功能，决策，技术等等的团队对话的记录系统。每个人都保持最新状态，并就项目状态和后续步骤保持一致。
Code代码：开发人员使用Mattermost进行协作和支持，使他们能够轻松地提出问题，解决问题，讨论技术方法并查看代码。
Build构建：平台集成使构建过程变得简单而透明。开发人员在Mattermost渠道中手动触发构建，然后团队会收到有关其成功或失败的通知。
Test测试：DevOps团队将他们最喜欢的CI和错误跟踪工具与Mattermost集成在一起，从而创建了一个强大的测试中心。该平台会自动触发测试并发布有关新错误的警报。
Release发布：发布构建后，DevOps团队将依靠Mattermost中的通知来告知他们发布已成功，因此他们可以加快功能和修补程序的交付。
Deploy部署：将代码投入生产后，DevOps团队会通过Mattermost进一步接收通知和数据。他们可以轻松跟踪哪些服务器接收到该代码并查看任何相关统计信息。
Monitor监控：DevOps监视工具可跟踪应用程序的运行状况和生产性能。使数据在Mattermost上可见可以帮助团队获得见解并制定决策。
通过上述的简介，相信大家已经对Mattermost有了简单的了解。
Mattermost安装
Mattermost Server支持Ubuntu、CentOS、Windows、Docker、Kubernetes部署，本次我们采用CentOS系统进行部署。
Mattermost Client提供了全终端支持。
Helm 部署
添加helm源
代码语言：javascript复制# helm repo add mattermost https://helm.mattermost.com"mattermost" has been added to your repositories# helm repo listNAME URLstable http://mirror.azure.cn/kubernetes/charts/gitlab https://charts.gitlab.iomattermost https://helm.mattermost.com# helm search repo -l mattermost/mattermost-team-editionNAME CHART VERSION APP VERSION DESCRIPTIONmattermost/mattermost-team-edition 3.10.0 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.9.1 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.9.0 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.8.3 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.8.2 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.8.1 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.8.0 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.7.0 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.6.2 5.13.2 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.6.0 5.13.0 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.5.1 5.12.4 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.4.1 5.11.0 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.4.0 5.11.0 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.3.0 5.10.0 Mattermost Team Edition server.mattermost/mattermost-team-edition 3.2.0 5.10.0 Mattermost Team Edition server.下载源码进行自定义
代码语言：javascript复制helm fetch mattermost/mattermost-team-edition --version=3.10.0创建namespace
代码语言：javascript复制kubectl create ns mattermost创建两个PV存储数据
新建mattermost-data用于存储数据，mattermost-plugins用户存储插件。
代码语言：javascript复制apiVersion: v1kind: PersistentVolumemetadata: name: mattermost-data namespace: mattermost labels: type: localspec: storageClassName: manual capacity: storage: 10Gi accessModes: - ReadWriteOnce hostPath: path: "/data/devops/mattermost/data"---apiVersion: v1kind: PersistentVolumemetadata: name: mattermost-plugins namespace: mattermost labels: type: localspec: storageClassName: manual capacity: storage: 1Gi accessModes: - ReadWriteOnce hostPath: path: "/data/devops/mattermost/plugins"[root@zeyang-nuc-service mattermost-team-edition]# kubectl create -f pv.yamlpersistentvolume/mattermost-data createdpersistentvolume/mattermost-plugins created[root@zeyang-nuc-service mattermost-team-edition]# kubectl get pv -n mattermostNAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGEmattermost-data 10Gi RWO Retain Available manual 9smattermost-plugins 1Gi RWO Retain Available manual 9s创建数据库
准备一个PG数据库，然后添加账号。
代码语言：javascript复制postgres=# CREATE DATABASE mattermost;CREATE DATABASEpostgres=# CREATE USER mmuser WITH PASSWORD 'mmuser-password';CREATE ROLEpostgres=# GRANT ALL PRIVILEGES ON DATABASE mattermost to mmuser;GRANTpostgres=# qcould not save history to file "/var/lib/pgsql/.psql_history": No such file or directory[postgres@zeyang-nuc-service ~]$ exitlogout自定义value.yml
添加PV设置
代码语言：javascript复制##persistence: ## This volume persists generated data from users, like images, attachments... ## data: enabled: true size: 10Gi ## If defined, volume.beta.kubernetes.io/storage-class: <storageClass> ## Default: volume.alpha.kubernetes.io/storage-class: default ## storageClass: manual accessMode: ReadWriteOnce # existingClaim: "" plugins: enabled: true size: 1Gi ## If defined, volume.beta.kubernetes.io/storage-class: <storageClass> ## Default: volume.alpha.kubernetes.io/storage-class: default ## storageClass: manual accessMode: ReadWriteOnce # existingClaim: ""配置Ingress
代码语言：javascript复制ingress: enabled: true path: / annotations: kubernetes.io/ingress.class: nginx #### To use the nginx cache you will need to set an http-snippet in the ingress-nginx configmap #### http-snippet: | #### proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=mattermost_cache:10m max_size=3g inactive=120m use_temp_path=off; hosts: - mm.idevops.site tls: # - secretName: mattermost.example.com-tls # hosts: # - mattermost.example.com连接外部数据库
mysql示例：
代码语言：javascript复制## If use this please disable the mysql chart by setting mysql.enable to falseexternalDB: enabled: true
## postgres or mysql externalDriverType: "mysql"
## postgres: "postgres://<USERNAME>:<PASSWORD>@<HOST>:5432/<DATABASE_NAME>?sslmode=disable&connect_timeout=10" ## mysql: "<USERNAME>:<PASSWORD>@tcp(<HOST>:3306)/<DATABASE_NAME>?charset=utf8mb4,utf8&readTimeout=30s&writeTimeout=30s" externalConnectionString: "xxxx:xxxxx@tcp(xxxx:3306)/mattermost?charset=utf8mb4,utf8u0026readTimeout=30su0026writeTimeout=30s"postgres示例:（这是我们使用的）
代码语言：javascript复制## If use this please disable the mysql chart by setting mysql.enable to falseexternalDB: enabled: true
## postgres or mysql externalDriverType: "postgres"
## postgres: "postgres://<USERNAME>:<PASSWORD>@<HOST>:5432/<DATABASE_NAME>?sslmode=disable&connect_timeout=10" ## mysql: "<USERNAME>:<PASSWORD>@tcp(<HOST>:3306)/<DATABASE_NAME>?charset=utf8mb4,utf8&readTimeout=30s&writeTimeout=30s" externalConnectionString: "postgres://mmuser:mmuser-password@192.168.1.200:5432/mattermost?sslmode=disable&connect_timeout=10"验证数据库可以正常访问
代码语言：javascript复制psql -h 192.168.1.200 -p 5432 -d mattermost -U mmuser部署
代码语言：javascript复制helm install mattermost-server --namespace mattermost ./mattermost-team-editionhelm delete mattermost-server --namespace mattermost ./mattermost-team-editionFAQ
代码语言：javascript复制err=pq: no pg_hba.conf entry for host "10.244.0.148", user "mmuser", database "mattermost", SSL off"}修改pg_hba.conf、 postgres.conf
代码语言：javascript复制## pg_hba.conf
host all all 192.168.1.0/24 md5host all all 10.244.0.1/24 md5
## postgres.conflisten_addresses = '*'网页配置
访问：http://mm.idevops.site.
创建用户：输入邮箱、用户名称、密码。admin:Devops.com123
创建一个新的团队,输入团队名称。
创建完成
设置中文
write file: open /mattermost/config/config.json: read-only file system"}解决配置文件无法写入问题：
创建一个pv持久化/mattermost/config目录
代码语言：javascript复制mkdir -p /data/devops/mattermost/config---apiVersion: v1kind: PersistentVolumemetadata: name: mattermost-config namespace: mattermost labels: type: localspec: storageClassName: manual capacity: storage: 1Gi accessModes: - ReadWriteOnce hostPath: path: "/data/devops/mattermost/config"------apiVersion: v1kind: PersistentVolumeClaimmetadata: name: mattermost-config-pvc namespace: mattermostspec: storageClassName: manual accessModes: - ReadWriteOnce resources: requests: storage: 1Gi修改templates/deployment.yaml
代码语言：javascript复制#挂载pvcvolumeMounts:- mountPath: /mattermost/config/config.json name: config-json subPath: config.json
- mountPath: /mattermost/config name: mattermost-config
--------------------------------------------volumes:- name: config-json secret: secretName: {{ include "mattermost-team-edition.fullname" . }}-config-json
- name: mattermost-config persistentVolumeClaim: claimName: {{ .Values.persistence.config.existingClaimName }} --------------------------------------------#删除 24行配置checksum/config: {{ include (print $.Template.BasePath "/secret-config.yaml") . | sha256sum }}
--------------------------------------------#删除 templates/secret-config.yaml
--------------------------------------------# 在values.yaml中定义config pvc的名称（注意名称要与创建的一致）persistence: ## This volume persists generated data from users, like images, attachments... ## config: existingClaimName: mattermost-config-pvchelm delete mattermost-server --namespace mattermost ./mattermost-team-editionkubectl delete -f ./mattermost-team-edition/config-pvc.yamlkubectl delete -f ./mattermost-team-edition/pv.yamlkubectl create -f ./mattermost-team-edition/config-pvc.yamlkubectl create -f ./mattermost-team-edition/pv.yamlhelm install mattermost-server --namespace mattermost ./mattermost-team-editionChatOps是一种以对话为中心的协作式工作方式，Mattermost ChatOps将不同的工具和工作流程整合在一起，以提供共享的控制台，以简化协作，缩短反馈循环并自动执行重复的手动任务。
