Istio 1.1安装部署实践

3月20日，Istio 1.1版本正式发布，我们已在《全方位解读 | Istio v1.1正式发布》一文中为大家进行了简单介绍。本文将给大家带来详细的部署过程详解，需要说明的是，本文针对单集群安装部署，多集群安装部署会在后续文章中详细说明。

前提条件

• 正确安装配置Kubernetes集群
• CentOS Linux release 7.5.1804

安装

下载istio 1.1版本

[root@vm157 ~]# wget https://github.com/istio/istio/releases/download/1.1.1/istio-1.1.1-linux.tar.gz   ……2019-03-26 09:39:06 (483 KB/s) - 'istio-1.1.1-linux.tar.gz' saved [15736205/15736205]

Istio安装有多种方式，本文根据helm template生成istio部署的配置文件，其他部署方式请参考官方文档。

[root@vm157 ~]# cd istio-1.1.1/[root@ruffy istio-1.1.1]# helm template ../install/kubernetes/helm/istio-init --name istio-init --namespace istio-system > istio-init.yaml[root@ruffy istio-1.1.1]# kubectl get crds | grep 'istio.io\|certmanager.k8s.io' | wc -l[root@ruffy istio-1.1.1]# InternalIp=10.20.1.175[root@ruffy istio-1.1.1]# helm template install/kubernetes/helm/istio --namespace istio-system \>   --set global.mtls.enabled=true \>   --set global.controlPlaneSecurityEnabled=true \>   --set gateways.istio-ingressgateway.type=NodePort \>   --set grafana.enabled=true \>   --set servicegraph.enabled=true \>   --set servicegraph.ingress.enabled=true \>   --set servicegraph.ingress.hosts={servicegraph-istio-system.${InternalIp}.nip.io} \>   --set tracing.enabled=true \>   --set tracing.jaeger.ingress.enabled=true \>   --set tracing.jaeger.ingress.hosts={jaeger-query-istio-system.${InternalIp}.nip.io} \>   --set tracing.ingress.enabled=true \>   --set tracing.ingress.hosts={tracing-istio-system.${InternalIp}.nip.io} \>   --set kiali.enabled=true \>   --set kiali.ingress.enabled=true \>   --set kiali.ingress.hosts={kiali-istio-system.${InternalIp}.nip.io} \>   --set kiali.dashboard.grafanaURL=http://grafana-istio-system.${InternalIp}.nip.io \>   --set kiali.dashboard.jaegerURL=http://jaeger-query-istio-system.${InternalIp}.nip.io \>   --name istio > ruffy/istio-${InternalIp}.yaml[root@vm175 istio-1.1.1]# cd ruffy[root@vm175 ruffy]# lsistio-10.20.1.175.yaml  istio-init.yaml         namespace.yaml

根据配置模板部署Isito组件

[root@vm175 istio-1.1.1]# kubectl apply -f ruffy/namespace.yamlnamespace/istio-system created         [root@vm175 istio-1.1.1]# kubectl apply -f ruffy/istio-init.yamlconfigmap/istio-crd-10 createdconfigmap/istio-crd-11 createdserviceaccount/istio-init-service-account createdclusterrole.rbac.authorization.k8s.io/istio-init-istio-system configuredclusterrolebinding.rbac.authorization.k8s.io/istio-init-admin-role-binding-istio-system configuredjob.batch/istio-init-crd-10 createdjob.batch/istio-init-crd-11 created[root@vm175 istio-1.1.1]# kubectl apply -f ruffy/istio-10.20.1.175.yamlpoddisruptionbudget.policy/istio-galley createdpoddisruptionbudget.policy/istio-ingressgateway createdpoddisruptionbudget.policy/istio-policy createdpoddisruptionbudget.policy/istio-telemetry createdpoddisruptionbudget.policy/istio-pilot created……rule.config.istio.io/promhttp createdrule.config.istio.io/promtcp createdrule.config.istio.io/promtcpconnectionopen createdrule.config.istio.io/promtcpconnectionclosed createdhandler.config.istio.io/kubernetesenv createdrule.config.istio.io/kubeattrgenrulerule createdrule.config.istio.io/tcpkubeattrgenrulerule createdkubernetes.config.istio.io/attributes createddestinationrule.networking.istio.io/istio-policy createddestinationrule.networking.istio.io/istio-telemetry created

查看Isito部署状态

[root@vm175 istio-1.1.1]# kubectl -n istio-system get allNAME                                          READY     STATUS              RESTARTS   AGEpod/grafana-7b46bf6b7c-xr2lw                  1/1       Running             0          2mpod/istio-citadel-5878d994cc-kfm7p            1/1       Running             0          2mpod/istio-cleanup-secrets-1.1.1-wlk7p         0/1       Completed           0          2mpod/istio-galley-6db4964df6-9lpsl             1/1       Running             0          2mpod/istio-grafana-post-install-1.1.1-44lv7    0/1       Completed           0          2mpod/istio-ingressgateway-cd5df7bc6-sgh6m      0/1       Running             0          2mpod/istio-init-crd-10-q5kvp                   0/1       Completed           0          3mpod/istio-init-crd-11-kdd25                   0/1       Completed           0          3mpod/istio-pilot-597dd58685-hsp72              1/2       Running             0          2mpod/istio-policy-67f66c8b5c-8kqwm             2/2       Running             5          2mpod/istio-security-post-install-1.1.1-gcjrm   0/1       Completed           0          2mpod/istio-sidecar-injector-59fc9d6f7d-j9prx   0/1       ContainerCreating   0          2mpod/istio-telemetry-c5bfc457f-qqzb5           2/2       Running             4          2mpod/istio-tracing-75dd89b8b4-2t2hl            0/1       ContainerCreating   0          2mpod/kiali-5d68f4c676-bdltq                    1/1       Running             0          2mpod/prometheus-89bc5668c-7kp8b                0/1       Init:Error          1          2mpod/servicegraph-57bfbbd697-6tldj             0/1       Running             0          2m……NAME                                          DESIRED   SUCCESSFUL   AGEjob.batch/istio-cleanup-secrets-1.1.1         1         1            2mjob.batch/istio-grafana-post-install-1.1.1    1         1            2mjob.batch/istio-init-crd-10                   1         1            3mjob.batch/istio-init-crd-11                   1         1            3mjob.batch/istio-security-post-install-1.1.1   1         1            2m

增加grafana和prometheus的ingress文件

Istio-grafana.yaml

[root@vm175 ruffy]# cat istio-grafana-ingress.yamlapiVersion: extensions/v1beta1kind: Ingressmetadata:  name: grafana  namespace: istio-system  labels:    app: grafana  annotations:spec:  rules:  - host: granafa-istio.10.20.1.175.xip.io    http:      paths:      - path: /        backend:          serviceName: grafana          servicePort: 3000Isito-prometheus-ingress.yaml[root@vm175 ruffy]# cat istio-prometheus-ingress.yamlapiVersion: extensions/v1beta1kind: Ingressmetadata:  name: istio-prometheus  namespace: istio-systemspec:  rules:  - host: prometheus-istio.10.20.1.175.xip.io    http:      paths:      - path: /prometheus        backend:          serviceName: prometheus          servicePort: 9090

查看部署的组件访问路径

[root@vm175 ruffy]# kubectl -n istio-system get ingNAME                 HOSTS                                          ADDRESS   PORTS     AGEgrafana              granafa-istio.10.20.1.175.xip.io                         80        5mistio-prometheus     prometheus-istio.10.20.1.175.xip.io                      80        5mistio-servicegraph   servicegraph-istio-system.10.20.1.175.nip.io             80        56mistio-tracing        tracing-istio-system.10.20.1.175.nip.io                  80        56mkiali                kiali-istio-system.10.20.1.175.nip.io                    80        56m

访问kiali时，出现secret不存在的情况，需要通过kiali-secret.yaml文件创建secret，并且重启kiali服务。

Kiali-secret.yaml文件

[root@vm175 ruffy]# cat kiali-secret.yamlapiVersion: v1kind: Secretmetadata:  name: kiali  namespace: istio-system  labels:    app: kialitype: Opaquedata:  username: "YWRtaW4="  passphrase: "YWRtaW4="

访问Kiali

浏览器输入地址：http://kiali-istio-system.10.20.1.175.nip.io/kiali/

用户名/密码：admin/admin

访问servicegraph

浏览器输入地址：http://servicegraph-istio-system.10.20.1.175.nip.io/force/forcegraph.html

访问tracing

浏览器输入地址：http://servicegraph-istio-system.10.20.1.175.nip.io/force/forcegraph.html

访问granafa

浏览器输入地址：http://granafa-istio.10.20.1.175.xip.io/d/TSEY6jLmk/istio-galley-dashboard?refresh=5s&orgId=1

至此 Istio1.1及其依赖组件搭建完毕。