本文主要讲述如何在k3s上部署Flomesh BookInfo Demo，在k8s上的安装步骤基本一致，酌情调整即可。
网络拓扑
接下来将要部署的demo的网络拓扑如下：
Topology
准备步骤：
准备一台建议最低配置为2核8G的虚拟机，操作系统为Ubuntu或CentOS均可。
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安装k3s，版本必须1.19以上，同时禁用自带的traefik：
export INSTALL_K3S_VERSION=v1.19.10+k3s1 curl -sfL https://get.k3s.io | sh -s - --disable traefik --write-kubeconfig-mode 644 -
安装ClickHouse：
Ubuntu/Debian:
sudo apt-get install apt-transport-https ca-certificates dirmngr sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv E0C56BD4 echo "deb https://repo.clickhouse.tech/deb/stable/ main/" | sudo tee \ /etc/apt/sources.list.d/clickhouse.list sudo apt-get update sudo apt-get install -y clickhouse-server clickhouse-client sudo service clickhouse-server startCentOS/RHEL:
sudo yum install yum-utils sudo rpm --import https://repo.clickhouse.tech/CLICKHOUSE-KEY.GPG sudo yum-config-manager --add-repo https://repo.clickhouse.tech/rpm/clickhouse.repo sudo yum install clickhouse-server clickhouse-client sudo /etc/init.d/clickhouse-server start更多安装方式和细节，请参照ClickHouse安装文档。
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调整ClickHouse绑定的网卡。ClickHouse默认启动时候只绑定在loopback上，需要修改配置文件
/etc/clickhouse-server/config.xml，找到第145行左右的如下配置项：0.0.0.0 将listen_host修改为
0.0.0.0或eth0的IP，保存配置，并重启ClickHouse服务：sudo systemctl restart clickhouse-server -
在ClickHouse中创建用于保存日志的table：
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启动clickhouse-client
clickhouse-client -h 127.0.0.1等待出现如下界面：
root@myubuntu:~# clickhouse-client -h 127.0.0.1 ClickHouse client version 21.5.5.12 (official build). Connecting to 127.0.0.1:9000 as user default. Connected to ClickHouse server version 21.5.5 revision 54448. myubuntu :) -
使用下面的SQL创建日志表：
CREATE TABLE default.log ( `startTime` Int64 DEFAULT JSONExtractInt(message, 'startTime'), `endTime` Int64 DEFAULT JSONExtractInt(message, 'endTime'), `latency` Int64 DEFAULT JSONExtractInt(message, 'latency'), `status` Int16 DEFAULT JSONExtractInt(response, 'status'), `statusText` String DEFAULT JSONExtractString(response, 'statusText'), `protocol` String DEFAULT JSONExtractString(message, 'protocol'), `method` String DEFAULT JSONExtractString(message, 'method'), `path` String DEFAULT JSONExtractString(message, 'path'), `headers` String DEFAULT JSONExtractRaw(message, 'headers'), `body` String DEFAULT JSONExtractString(message, 'body'), `response` String DEFAULT JSONExtractRaw(message, 'response'), `response.protocol` String DEFAULT JSONExtractString(response, 'protocol'), `message` String ) ENGINE = MergeTree PARTITION BY (toYYYYMM(toDateTime(startTime / 1000))) ORDER BY (status, startTime) SETTINGS index_granularity = 8192;看到类似如下输出时，表示table已成功创建：
root@myubuntu:~# clickhouse-client -h 127.0.0.1 ClickHouse client version 21.5.5.12 (official build). Connecting to 127.0.0.1:9000 as user default. Connected to ClickHouse server version 21.5.5 revision 54448. myubuntu :) CREATE TABLE default.log :-] ( :-] `startTime` Int64 DEFAULT JSONExtractInt(message, 'startTime'), :-] `endTime` Int64 DEFAULT JSONExtractInt(message, 'endTime'), :-] `latency` Int64 DEFAULT JSONExtractInt(message, 'latency'), :-] `status` Int16 DEFAULT JSONExtractInt(response, 'status'), :-] `statusText` String DEFAULT JSONExtractString(response, 'statusText'), :-] `protocol` String DEFAULT JSONExtractString(message, 'protocol'), :-] `method` String DEFAULT JSONExtractString(message, 'method'), :-] `path` String DEFAULT JSONExtractString(message, 'path'), :-] `headers` String DEFAULT JSONExtractRaw(message, 'headers'), :-] `body` String DEFAULT JSONExtractString(message, 'body'), :-] `response` String DEFAULT JSONExtractRaw(message, 'response'), :-] `response.protocol` String DEFAULT JSONExtractString(response, 'protocol'), :-] `message` String :-] ) :-] ENGINE = MergeTree :-] PARTITION BY (toYYYYMM(toDateTime(startTime / 1000))) :-] ORDER BY (status, startTime) :-] SETTINGS index_granularity = 8192; CREATE TABLE default.log ( `startTime` Int64 DEFAULT JSONExtractInt(message, 'startTime'), `endTime` Int64 DEFAULT JSONExtractInt(message, 'endTime'), `latency` Int64 DEFAULT JSONExtractInt(message, 'latency'), `status` Int16 DEFAULT JSONExtractInt(response, 'status'), `statusText` String DEFAULT JSONExtractString(response, 'statusText'), `protocol` String DEFAULT JSONExtractString(message, 'protocol'), `method` String DEFAULT JSONExtractString(message, 'method'), `path` String DEFAULT JSONExtractString(message, 'path'), `headers` String DEFAULT JSONExtractRaw(message, 'headers'), `body` String DEFAULT JSONExtractString(message, 'body'), `response` String DEFAULT JSONExtractRaw(message, 'response'), `response.protocol` String DEFAULT JSONExtractString(response, 'protocol'), `message` String ) ENGINE = MergeTree PARTITION BY toYYYYMM(toDateTime(startTime / 1000)) ORDER BY (status, startTime) SETTINGS index_granularity = 8192 Query id: 85ecd31a-07dd-4d03-9a62-8bcefa94f41f Ok. 0 rows in set. Elapsed: 0.012 sec. myubuntu :)
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部署Demo
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从Training Materials将代码checkout到已经准备好的虚拟机中。
git clone https://github.com/flomesh-io/training-materials -
进入Demo的目录：
cd training-materials/003-mesh/test当前目录中共有5个文件夹，以数字编号顺序排列：
root@k3s:~/training-materials/003-mesh/test# tree . . ├── 001-deps │ └── cert-manager-v1.3.1.yaml ├── 002-operator │ └── pipy-operator.yaml ├── 003-ingress │ ├── ingress-pipy.yaml │ └── ingress.yaml ├── 004-sidecar │ └── proxy-profile.yaml └── 005-bookinfo ├── bookinfo.yaml └── clickhouse.yaml 5 directories, 7 files接下来，将按照文件夹的数字顺序开始进行部署。
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部署cert-manager
kubectl apply -f 001-deps/执行命令后，会看到类似于以下的输出：
root@k3s:~/training-materials/003-mesh/test# kubectl apply -f 001-deps/ customresourcedefinition.apiextensions.k8s.io/certificaterequests.cert-manager.io created customresourcedefinition.apiextensions.k8s.io/certificates.cert-manager.io created customresourcedefinition.apiextensions.k8s.io/challenges.acme.cert-manager.io created customresourcedefinition.apiextensions.k8s.io/clusterissuers.cert-manager.io created customresourcedefinition.apiextensions.k8s.io/issuers.cert-manager.io created customresourcedefinition.apiextensions.k8s.io/orders.acme.cert-manager.io created namespace/cert-manager created serviceaccount/cert-manager-cainjector created serviceaccount/cert-manager created serviceaccount/cert-manager-webhook created clusterrole.rbac.authorization.k8s.io/cert-manager-cainjector created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-issuers created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-clusterissuers created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-certificates created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-orders created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-challenges created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-ingress-shim created clusterrole.rbac.authorization.k8s.io/cert-manager-view created clusterrole.rbac.authorization.k8s.io/cert-manager-edit created clusterrole.rbac.authorization.k8s.io/cert-manager-controller-approve:cert-manager-io created clusterrole.rbac.authorization.k8s.io/cert-manager-webhook:subjectaccessreviews created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-cainjector created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-issuers created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-clusterissuers created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-certificates created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-orders created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-challenges created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-ingress-shim created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-controller-approve:cert-manager-io created clusterrolebinding.rbac.authorization.k8s.io/cert-manager-webhook:subjectaccessreviews created role.rbac.authorization.k8s.io/cert-manager-cainjector:leaderelection created role.rbac.authorization.k8s.io/cert-manager:leaderelection created role.rbac.authorization.k8s.io/cert-manager-webhook:dynamic-serving created rolebinding.rbac.authorization.k8s.io/cert-manager-cainjector:leaderelection created rolebinding.rbac.authorization.k8s.io/cert-manager:leaderelection created rolebinding.rbac.authorization.k8s.io/cert-manager-webhook:dynamic-serving created service/cert-manager created service/cert-manager-webhook created deployment.apps/cert-manager-cainjector created deployment.apps/cert-manager created deployment.apps/cert-manager-webhook created mutatingwebhookconfiguration.admissionregistration.k8s.io/cert-manager-webhook created validatingwebhookconfiguration.admissionregistration.k8s.io/cert-manager-webhook created检查cert-manager namespace下的pod，当看到cert-manager相关组件都已处于Running状态时，说明cert-manager已经成功安装，可以进行下一步pipy-operator的部署：
root@k3s:~/training-materials/003-mesh/test# kubectl get po -n cert-manager NAME READY STATUS RESTARTS AGE cert-manager-cainjector-59f76f7fff-vzrqb 1/1 Running 0 37s cert-manager-59f6c76f4b-g7lv2 1/1 Running 0 37s cert-manager-webhook-565d54dd68-cf77v 1/1 Running 0 37s -
部署pipy-operator：
kubectl apply -f 002-operator/执行命令后，将看到类似于以下的输出：
root@k3s:~/training-materials/003-mesh/test# kubectl apply -f 002-operator/ namespace/flomesh-system created customresourcedefinition.apiextensions.k8s.io/proxies.flomesh.io created customresourcedefinition.apiextensions.k8s.io/proxyprofiles.flomesh.io created serviceaccount/flomesh-controller-manager created role.rbac.authorization.k8s.io/flomesh-leader-election-role created clusterrole.rbac.authorization.k8s.io/flomesh-manager-role created clusterrole.rbac.authorization.k8s.io/flomesh-metrics-reader created clusterrole.rbac.authorization.k8s.io/flomesh-proxy-role created rolebinding.rbac.authorization.k8s.io/flomesh-leader-election-rolebinding created clusterrolebinding.rbac.authorization.k8s.io/flomesh-manager-rolebinding created clusterrolebinding.rbac.authorization.k8s.io/flomesh-proxy-rolebinding created configmap/flomesh-manager-config created configmap/flomesh-proxy-injector-tpl created service/flomesh-controller-manager-metrics-service created service/flomesh-pipy-sidecar-injector-service created service/flomesh-webhook-service created deployment.apps/flomesh-controller-manager created deployment.apps/flomesh-pipy-sidecar-injector created certificate.cert-manager.io/flomesh-serving-cert created issuer.cert-manager.io/flomesh-selfsigned-issuer created mutatingwebhookconfiguration.admissionregistration.k8s.io/flomesh-mutating-webhook-configuration created mutatingwebhookconfiguration.admissionregistration.k8s.io/flomesh-sidecar-injector-webhook-configuration created validatingwebhookconfiguration.admissionregistration.k8s.io/flomesh-validating-webhook-configuration created检查flomesh-system namespace下的pod，当看到flomesh-system相关组件都已处于Running状态时，说明pipy-operator已经成功安装，可以进行下一步Ingress Controller的部署：
root@k3s:~/training-materials/003-mesh/test# kubectl get po -n flomesh-system NAME READY STATUS RESTARTS AGE flomesh-pipy-sidecar-injector-655994b6c6-fk2f8 1/1 Running 0 85s flomesh-controller-manager-8db7d9986-lt75l 1/1 Running 0 85s -
部署ingress-pipy，这一步需要分成两个阶段来进行部署：
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首先部署Ingress Controller：
kubectl apply -f 003-ingress/ingress-pipy.yaml执行命令后，会看到类似于以下的输出：
root@k3s:~/training-materials/003-mesh/test# kubectl apply -f 003-ingress/ingress-pipy.yaml namespace/ingress-pipy created customresourcedefinition.apiextensions.k8s.io/ingressparameters.flomesh.io created serviceaccount/ingress-pipy created role.rbac.authorization.k8s.io/ingress-pipy-leader-election-role created clusterrole.rbac.authorization.k8s.io/ingress-pipy-role created rolebinding.rbac.authorization.k8s.io/ingress-pipy-leader-election-rolebinding created clusterrolebinding.rbac.authorization.k8s.io/ingress-pipy-rolebinding created configmap/ingress-config created service/ingress-pipy-cfg created service/ingress-pipy-controller created service/ingress-pipy-defaultbackend created service/webhook-service created deployment.apps/ingress-pipy-cfg created deployment.apps/ingress-pipy-controller created deployment.apps/ingress-pipy-manager created certificate.cert-manager.io/serving-cert created issuer.cert-manager.io/selfsigned-issuer created mutatingwebhookconfiguration.admissionregistration.k8s.io/mutating-webhook-configuration created validatingwebhookconfiguration.admissionregistration.k8s.io/validating-webhook-configuration created检查ingress-pipy namespace下的pod，如果都已处于Running状态，则ingress-pipy已经安装成功，可以继续创建Ingress。
root@k3s:~/training-materials/003-mesh/test# kubectl get po -n ingress-pipy NAME READY STATUS RESTARTS AGE svclb-ingress-pipy-controller-7hv48 1/1 Running 0 114s ingress-pipy-cfg-6856d674f7-5vvrv 1/1 Running 0 114s ingress-pipy-controller-76cd866d78-nqftz 1/1 Running 0 114s ingress-pipy-manager-6dddc98484-lzd67 1/1 Running 0 114s -
创建Ingress：
kubectl apply -f 003-ingress/ingress.yaml会看到如下输出：
root@k3s:~/training-materials/003-mesh/test# kubectl apply -f 003-ingress/ingress.yaml ingressclass.networking.k8s.io/pipy created ingress.networking.k8s.io/ingress-pipy-bookinfo created
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下面需要创建一个ProxyProfile，为需要注入sidecar的POD提供sidecar的配置文件：
kubectl apply -f 004-sidecar/会看到如下的输出：
root@k3s:~/training-materials/003-mesh/test# kubectl apply -f 004-sidecar/ proxyprofile.flomesh.io/pf-bookinfo-demo created检查一下ProxyProfile是否已经成功创建：
root@k3s:~/training-materials/003-mesh/test# kubectl get pf NAME SELECTOR NAMESPACE AGE pf-bookinfo-demo {"matchLabels":{"sys":"bookinfo-samples","version":"v1"}} default 52s -
最后来进行BookInfo应用的部署：
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首先，编辑005-bookinfo/clickhouse.yaml，将
subsets.addresses.ip更改为虚拟机的本地IP(注意不是loopback地址)，以便可以从k3s内部访问ClickHouseapiVersion: v1 kind: Endpoints metadata: name: samples-clickhouse labels: app: clickhouse service: clickhouse subsets: - addresses: - ip: 10.0.0.60 ports: - name: chdb port: 8123 protocol: TCP -
保存后，即可进行BookInfo应用的部署：
kubectl apply -f 005-bookinfo/执行命令后会看到如下输出：
root@k3s:~/training-materials/003-mesh/test# kubectl apply -f 005-bookinfo/ deployment.apps/samples-discovery-server-v1 created deployment.apps/samples-config-service-v1 created deployment.apps/samples-api-gateway-v1 created deployment.apps/samples-bookinfo-details-v1 created deployment.apps/samples-bookinfo-ratings-v1 created deployment.apps/samples-bookinfo-reviews-v1 created service/samples-discovery-server created service/samples-config-service created service/samples-api-gateway created service/samples-bookinfo-details created service/samples-bookinfo-ratings created service/samples-bookinfo-reviews created endpoints/samples-clickhouse created service/samples-clickhouse createdBookInfo被部署在default namespace下，检查各个pod的状态，直到全部变为Running：
root@k3s:~/training-materials/003-mesh/test# kubectl get po NAME READY STATUS RESTARTS AGE samples-discovery-server-v1-7768d9894b-j4v6g 2/2 Running 0 3m26s samples-config-service-v1-84888bfb5b-qlxq8 1/1 Running 0 3m26s samples-bookinfo-details-v1-55cd5b7d75-5v88z 2/2 Running 0 3m26s samples-api-gateway-v1-5bbf495495-sbn8w 2/2 Running 0 3m26s samples-bookinfo-reviews-v1-64664bc6fc-zpvt2 2/2 Running 0 3m26s samples-bookinfo-ratings-v1-7c98464bc9-xlc6x 2/2 Running 0 3m26s检查服务的日志，确保服务已经启动完成：
kubectl logs samples-bookinfo-reviews-v1-64664bc6fc-zpvt2 -c app当看到类似如下日志时，表明服务已经成功启动：
2021-05-30 05:59:00.256 INFO [bookinfo-reviews,,,] 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_BOOKINFO-REVIEWS/samples-bookinfo-reviews-v1-64664bc6fc-zpvt2:bookinfo-reviews:8102: registering service... 2021-05-30 05:59:00.295 INFO [bookinfo-reviews,,,] 1 --- [ main] io.undertow : starting server: Undertow - 2.1.6.Final 2021-05-30 05:59:00.327 INFO [bookinfo-reviews,,,] 1 --- [ main] org.xnio : XNIO version 3.8.0.Final 2021-05-30 05:59:00.328 INFO [bookinfo-reviews,,,] 1 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient : DiscoveryClient_BOOKINFO-REVIEWS/samples-bookinfo-reviews-v1-64664bc6fc-zpvt2:bookinfo-reviews:8102 - registration status: 204 2021-05-30 05:59:00.346 INFO [bookinfo-reviews,,,] 1 --- [ main] org.xnio.nio : XNIO NIO Implementation Version 3.8.0.Final 2021-05-30 05:59:00.387 INFO [bookinfo-reviews,,,] 1 --- [ main] org.jboss.threads : JBoss Threads version 3.1.0.Final 2021-05-30 05:59:00.462 INFO [bookinfo-reviews,,,] 1 --- [ main] o.s.b.w.e.undertow.UndertowWebServer : Undertow started on port(s) 8102 (http) 2021-05-30 05:59:00.463 INFO [bookinfo-reviews,,,] 1 --- [ main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8102 2021-05-30 05:59:00.503 INFO [bookinfo-reviews,,,] 1 --- [ main] i.f.bookinfo.reviews.ReviewsApplication : Started ReviewsApplication in 46.855 seconds (JVM running for 50.107)
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测试Demo
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确定Ingress Controller绑定的IP：
root@k3s:~/training-materials/003-mesh/test# kubectl -n ingress-pipy get svc ingress-pipy-controller NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE ingress-pipy-controller LoadBalancer 10.43.92.37 10.0.2.15 80:31255/TCP 21mEXTERNAL-IP列的地址即为Ingress Controller绑定的外部IP，这里为
10.0.2.15。 -
测试创建rating：
curl -X POST http://10.0.2.15/bookinfo-ratings/ratings \ -H "Content-Type: application/json" \ -d '{"reviewerId":"9bc908be-0717-4eab-bb51-ea14f669ef20","productId":"a071c269-369c-4f79-be03-6a41f27d6b5f","rating":3}'测试查询rating：
curl http://10.0.2.15/bookinfo-ratings/ratings/a071c269-369c-4f79-be03-6a41f27d6b5f -
测试创建review：
curl -X POST http://10.0.2.15/bookinfo-reviews/reviews \ -H "Content-Type: application/json" \ -d '{"reviewerId":"9bc908be-0717-4eab-bb51-ea14f669ef20","productId":"a071c269-369c-4f79-be03-6a41f27d6b5f","review":"This was OK.","rating":3}'测试查询review：
curl http://10.0.2.15/bookinfo-reviews/reviews/a071c269-369c-4f79-be03-6a41f27d6b5f -
测试查询book details：
curl http://10.0.2.15/bookinfo-details/details/1234567890
查询日志
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运行clickhouse-client，连接到ClickHouse实例：
root@myubuntu:~# clickhouse-client -h 127.0.0.1 ClickHouse client version 21.5.5.12 (official build). Connecting to 127.0.0.1:9000 as user default. Connected to ClickHouse server version 21.5.5 revision 54448. myubuntu :)
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查询sidecar捕获到的应用日志：
myubuntu :) select * from default.log where path <> '' limit 1 SELECT * FROM default.log WHERE path != '' LIMIT 1 Query id: 067df10f-9175-48b1-93d7-ccc01945eb27 ┌─────startTime─┬───────endTime─┬─latency─┬─status─┬─statusText─┬─protocol─┬─method─┬─path────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┬─headers────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┬─body─┬─response───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┬─response.protocol─┬─message────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐ │ 1622355980625 │ 1622355980626 │ 1 │ 200 │ OK │ HTTP/1.1 │ PUT │ /eureka/apps/BOOKINFO-DETAILS/samples-bookinfo-details-v1-55cd5b7d75-5v88z:bookinfo-details:8103?status=UP&lastDirtyTimestamp=1622354330216 │ {"discoveryidentity-version":"1.4","accept-encoding":"gzip","discoveryidentity-name":"DefaultClient","user-agent":"Java-EurekaClient/v1.10.11","host":"samples-discovery-server:8771","discoveryidentity-id":"10.42.0.19"} │ │ {"body":"","statusText":"OK","status":200,"headers":{"connection":"keep-alive","date":"Sun, 30 May 2021 06:26:20 GMT","content-type":"application/xml"},"protocol":"HTTP/1.1"} │ HTTP/1.1 │ {"response":{"body":"","statusText":"OK","status":200,"headers":{"connection":"keep-alive","date":"Sun, 30 May 2021 06:26:20 GMT","content-type":"application/xml"},"protocol":"HTTP/1.1"},"latency":1,"method":"PUT","headers":{"discoveryidentity-version":"1.4","accept-encoding":"gzip","discoveryidentity-name":"DefaultClient","user-agent":"Java-EurekaClient/v1.10.11","host":"samples-discovery-server:8771","discoveryidentity-id":"10.42.0.19"},"startTime":1622355980625,"endTime":1622355980626,"body":"","path":"/eureka/apps/BOOKINFO-DETAILS/samples-bookinfo-details-v1-55cd5b7d75-5v88z:bookinfo-details:8103?status=UP&lastDirtyTimestamp=1622354330216","protocol":"HTTP/1.1"} │ └───────────────┴───────────────┴─────────┴────────┴────────────┴──────────┴────────┴─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴──────┴────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────────┴────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘ 1 rows in set. Elapsed: 0.007 sec. myubuntu :)