Ni ọdun 25 sẹyin, Java wọ inu ojulowo ti awọn pirogirama ati nikẹhin di ọkan ninu awọn eroja pataki ni ayika eyiti awọn akopọ ohun elo ti kọ. Loni, sibẹsibẹ, ọpọlọpọ awọn eniyan ati awọn ajo ti o ti jẹ olõtọ si Java fun ọpọlọpọ ọdun ni o nšišẹ lọwọ gbigbe tabi ni imọran gbigbe si ori pẹpẹ. tabi awọn itọsẹ rẹ gẹgẹbi tabi .
Laanu, Kubernetes ni ọna ikẹkọ giga ati ṣafihan Layer iṣiṣẹ miiran sinu ilana idagbasoke ti awọn olupilẹṣẹ Java ti saba si. Loni a yoo sọ fun ọ bi o ṣe le lo , lati ṣe simplify awọn iṣẹ afikun wọnyi ti o ni nkan ṣe pẹlu Kubernetes ati awọn apoti, ati rii daju ijira ti ko ni irora si ipilẹ awọsanma lakoko mimu ilolupo eda abemi Java ti o mọ. Pẹlupẹlu, a yoo ṣafihan bi o ṣe le ran awọn ohun elo Java sori pẹpẹ OpenShift ni lilo ohun itanna OpenShift Maven.
Ibile Java Development Ilana
Ilana idagbasoke ti aṣa (Aworan 1) pẹlu koodu kikọ olupilẹṣẹ, lẹhinna ṣiṣẹda awọn ẹya imuṣiṣẹ ni irisi JAR tabi awọn faili WAR, ati lẹhinna gbigbe ati ṣiṣiṣẹ awọn faili wọnyi lori wẹẹbu tabi olupin ohun elo. Ọna akọkọ lati ṣe eyi ni lati lo Maven lati laini aṣẹ tabi lo IDE bii IntelliJ tabi Eclipse lati ṣe koodu ati ṣajọ awọn ohun elo naa. Awọn olupilẹṣẹ lo lati ṣe awọn iyipada koodu ati idanwo ohun gbogbo daradara ṣaaju ṣiṣe koodu ati fifisilẹ si iṣakoso ẹya.
Iresi. 1. Ibile Java idagbasoke ilana.
Ilana Idagbasoke Java fun Awọsanma
Nigbati o ba nlọ si awọn ohun elo awọsanma, Kubernetes ati . Nitorinaa, ni bayi olupilẹṣẹ nilo lati ṣajọ awọn ohun elo Java sinu ati ṣẹda awọn ifihan Kubernetes ti o ṣe apejuwe awọn aworan wọnyi. Awọn ifihan wọnyi lẹhinna lo si olupin iṣelọpọ ti n ṣiṣẹ Kubernetes. Ni ọna, Kubernetes gba awọn aworan wọnyi lati iforukọsilẹ ati mu awọn ohun elo ṣiṣẹ ni ibamu si awọn atunto ti a ti kọ ni awọn ifihan, eyiti o jẹ awọn faili YAML nigbagbogbo.
Awọn metamorphosis ti ilana idagbasoke Java ibile ni iyipada si awọsanma ni a fihan ni Ọpọtọ. 2.
Iresi. 2. Ilana idagbasoke Java fun awọsanma.
Eclipse JKube
Iṣilọ si Kubernetes ṣe afikun ipele iṣiṣẹ miiran si ilana idagbasoke, ati pe ọpọlọpọ awọn olupilẹṣẹ jẹ aifọkanbalẹ nipa rẹ nitori wọn fẹ dojukọ iṣẹ pataki wọn — ọgbọn ohun elo - dipo bi o ṣe le gbe wọn lọ. Ati pe eyi ni ibi ti o wa sinu ere. , eyiti ngbanilaaye awọn olupilẹṣẹ lati lo awọn ile-ikawe wọn ati awọn afikun ( pelu tabi ) lati ṣe laiparuwo eiyan ati awọn iṣẹ ti o ni ibatan Kubernetes nipa titẹle aworan atọka ni Nọmba. 2.
Ninu iyoku nkan yii, a yoo fihan ọ bi o ṣe le ṣe irọrun ilana idagbasoke Java ni agbegbe Kubernetes nipa lilo Eclipse JKube pẹlu Kubernetes Maven Plugin.
Ilana Idagbasoke Awọsanma Lilo Eclipse JKube
Jẹ ki a gbero ero idagbasoke Java ti a ti yipada diẹ fun awọsanma lati aworan 2, ti n ṣafihan Eclipse JKube ati Kubernetes Maven Plugin sinu rẹ, bi a ṣe han ni Ọpọtọ. 3.
Iresi. 3. Ilana idagbasoke Java fun awọsanma nipa lilo Eclipse JKube.
Gẹgẹbi a ti le rii, nibi gbogbo awọn iṣẹ ṣiṣe fun ibaraenisepo pẹlu Kubernetes ati awọn apoti (ti o ṣe afihan ni pupa ni aworan atọka) ti rọpo nipasẹ awọn iṣẹ ibi-afẹde Eclipse JKube aiyipada, eyiti a ṣe atokọ ni tabili. 1.
Tabili 1. Eclipse JKube aiyipada awọn iṣẹ-ṣiṣe.
Nkan
Ipele
Apejuwe
PRE_INTEGRATION_TEST
Awọn aworan docker ile
ẹrọ
Ikojọpọ awọn aworan docker si iforukọsilẹ
PROCESS_RESOURCES
Ti o npese K8s farahan
AKIYESI
Lilo awọn ifihan ti ipilẹṣẹ si awọn K8
LAIṢIṢẸ
Yiyọ awọn orisun K8s ti a fi ranṣẹ nipa lilo k8s: lo ati k8s: ransogun
akiyesi: Ti o ko ba fẹ awọn iṣẹ-ṣiṣe lati lo awọn aiyipada ero wọnyi, o le tunto Eclipse JKube pẹlu ọwọ fun ara rẹ, nitori o ṣe atilẹyin iṣeto ni nipasẹ и .
Bayi jẹ ki a wo awọn apẹẹrẹ ti lilo Eclipse JKube ati Kubernetes Maven Plugin nigba ṣiṣẹ pẹlu awọn ohun elo.
Gbigbe Ohun elo Java kan sori Kubernetes Lilo Eclipse JKube
Ninu apẹẹrẹ yii a yoo ran ohun elo Java ti o rọrun sori iṣupọ kan lilo Eclipse JKube. Lilo Kubernetes Maven Plugin, a le ṣeto awọn aye imuṣiṣẹ laisi nini lati kọ eyikeyi iṣeto ni.
Bi apẹẹrẹ ohun elo ti a lo , eyiti o ṣe agbejade igbejade JSON ni aaye ipari / ID:
~/work/repos/eclipse-jkube-demo-project : $ curl localhost:8080/random | jq .
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 45 0 45 0 0 818 0 --:--:-- --:--:-- --:--:-- 818
{
"id": "e80a4d10-c79b-4b9a-aaac-7c286cb37f3c"
}
Igbesẹ 1. Ṣe igbasilẹ Kubernetes Maven Plugin
Kubernetes Maven Plugin wa ninu ibi ipamọ . Lati lo Eclipse JKube o nilo lati ṣafikun Kubernetes Maven Plugin si pom.xml rẹ gẹgẹbi igbẹkẹle:
<plugin>
<groupId>org.eclipse.jkube</groupId>
<artifactId>kubernetes-maven-plugin</artifactId>
<version>${jkube.version}</version>
</plugin>
Ti a ba lo OpenShift dipo Kubernetes mimọ, lẹhinna pom.xml jẹ atunṣe bi atẹle:
<plugin>
<groupId>org.eclipse.jkube</groupId>
<artifactId>openshift-maven-plugin</artifactId>
<version>${jkube.version}</version>
</plugin>
Igbesẹ 2. Kọ aworan docker
Faili JAR ohun elo naa le kọ pẹlu aṣẹ package mvn, ati lẹhinna mvn ibi-afẹde k8s: kọ le ṣee lo lati kọ aworan docker ti ohun elo naa. Ṣe akiyesi pe a ti bori orukọ aworan aiyipada pẹlu ohun-ini yii:
<jkube.generator.name>docker.io/rohankanojia/random-generator:${project.version}</jkube.generator.name>
Ṣaaju ṣiṣe aworan naa, o nilo lati rii daju pe docker daemon ti farahan ni deede. Eyi le ṣee ṣe pẹlu aṣẹ atẹle:
$ eval $(minikube docker-env)
Lẹhinna a tẹ aṣẹ mvn k8s: kọ, ati pe eyi ni ohun ti a yoo rii loju iboju nigba kikọ aworan docker nipa lilo iṣẹ-ṣiṣe Eclipse JKube:
~/work/repos/eclipse-jkube-demo-project : $ mvn k8s:build
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< meetup:random-generator >-----------------------
[INFO] Building random-generator 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- kubernetes-maven-plugin:1.0.0-rc-1:build (default-cli) @ random-generator ---
[INFO] k8s: Running in Kubernetes mode
[INFO] k8s: Building Docker image in Kubernetes mode
[INFO] k8s: Running generator spring-boot
[INFO] k8s: spring-boot: Using Docker image quay.io/jkube/jkube-java-binary-s2i:0.0.7 as base / builder
[INFO] k8s: [docker.io/rohankanojia/random-generator:0.0.1] "spring-boot": Created docker-build.tar in 251 milliseconds
[INFO] k8s: [docker.io/rohankanojia/random-generator:0.0.1] "spring-boot": Built image sha256:a20e5
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.053 s
[INFO] Finished at: 2020-08-10T11:28:23+05:30
[INFO] ------------------------------------------------------------------------
~/work/repos/eclipse-jkube-demo-project : $
Igbesẹ 3. Ṣe agbejade aworan naa si iforukọsilẹ docker
Lẹhin ti a ti kọ aworan docker pẹlu atunto iforukọsilẹ titari (ninu ọran wa o jẹ docker.io), a le fi aworan yii ranṣẹ si iforukọsilẹ. Eyi ni ohun ti yoo han lẹhin ti a beere Eclipse JKube lati ṣe mvn k8s: titari iṣẹ-ṣiṣe:
~/work/repos/eclipse-jkube-demo-project : $ mvn k8s:push
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< meetup:random-generator >-----------------------
[INFO] Building random-generator 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- kubernetes-maven-plugin:1.0.0-rc-1:push (default-cli) @ random-generator ---
[INFO] k8s: Running in Kubernetes mode
[INFO] k8s: Building Docker image in Kubernetes mode
[INFO] k8s: Running generator spring-boot
[INFO] k8s: spring-boot: Using Docker image quay.io/jkube/jkube-java-binary-s2i:0.0.7 as base / builder
[INFO] k8s: The push refers to repository [docker.io/rohankanojia/random-generator]
5dcd9556710f: Layer already exists
b7139ad07aa8: Layer already exists
b6f081e4b2b6: Layer already exists
d8e1f35641ac: Layer already exists
[INFO] k8s: 0.0.1: digest: sha256:9f9eda2a13b8cab1d2c9e474248500145fc09e2922fe3735692f9bda4c76002d size: 1162
[INFO] k8s: Pushed docker.io/rohankanojia/random-generator:0.0.1 in 7 seconds
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 11.222 s
[INFO] Finished at: 2020-08-10T11:35:37+05:30
[INFO] ------------------------------------------------------------------------
~/work/repos/eclipse-jkube-demo-project : $
Lẹhin fifiranṣẹ aworan naa, o nilo lati ṣayẹwo pe o wa ninu iforukọsilẹ. Ninu ọran wa, a kan rii ni Docker Hub, bi o ṣe han ni Ọpọtọ. 4.
Iresi. 4. Aworan ti a fi ranṣẹ si iforukọsilẹ han ni Docker Hub.
Igbesẹ 4. Ṣiṣe awọn orisun orisun Kubernetes farahan fun ohun elo naa
Nitorinaa, a ti gba aworan ohun elo, ni bayi a nilo lati kọ awọn ifihan Kubernetes. Lati ṣe eyi, Eclipse JKube ni iṣẹ-ṣiṣe ti o ṣe agbejade awọn orisun ti o lagbara ti o da lori ilana Java ti o wa ni ipilẹ (, , Vert.x tabi diẹ ninu awọn miiran). O tun le ṣe akanṣe iṣafihan nipasẹ lilo faili iṣeto XML kan ati gbigbe awọn ajẹkù aise (awọn ajẹkù ti iṣafihan orisun ti o nilo) sinu folda ohun elo src/akọkọ/jkube. Ni ọran yii, iṣeto rẹ yoo gbejade si awọn ifihan ti ipilẹṣẹ.
Ninu apẹẹrẹ wa, a fi ohun gbogbo silẹ bi o ti jẹ, ati nitori naa Eclipse JKube ṣe ipilẹṣẹ ifihan kan fun imuṣiṣẹ aiyipada ati fun iṣẹ pẹlu iru ClusterIP. Ati pe lẹhinna nikan ni a ṣe atunṣe ifihan iṣẹ lati yi iru iṣẹ pada si NodePort. O le fagilee ihuwasi aiyipada nipa lilo ohun-ini atẹle:
<jkube.enricher.jkube-service.type>NodePort</jkube.enricher.jkube-service.type>
Eyi ni ohun ti iṣafihan iboju dabi lẹhin ti a beere Eclipse JKube lati ṣe mvn k8s: iṣẹ orisun orisun.
~/work/repos/eclipse-jkube-demo-project : $ mvn k8s:resource
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< meetup:random-generator >-----------------------
[INFO] Building random-generator 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- kubernetes-maven-plugin:1.0.0-rc-1:resource (default-cli) @ random-generator ---
[INFO] k8s: Running generator spring-boot
[INFO] k8s: spring-boot: Using Docker image quay.io/jkube/jkube-java-binary-s2i:0.0.7 as base / builder
[INFO] k8s: jkube-controller: Adding a default Deployment
[INFO] k8s: jkube-service: Adding a default service 'random-generator' with ports [8080]
[INFO] k8s: jkube-healthcheck-spring-boot: Adding readiness probe on port 8080, path='/actuator/health', scheme='HTTP', with initial delay 10 seconds
[INFO] k8s: jkube-healthcheck-spring-boot: Adding liveness probe on port 8080, path='/actuator/health', scheme='HTTP', with initial delay 180 seconds
[INFO] k8s: jkube-revision-history: Adding revision history limit to 2
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.344 s
[INFO] Finished at: 2020-08-10T11:38:11+05:30
[INFO] ------------------------------------------------------------------------
~/work/repos/eclipse-jkube-demo-project : $ ls target/classes/META-INF/jkube/kubernetes
random-generator-deployment.yml random-generator-service.yml
~/work/repos/eclipse-jkube-demo-project : $ cat target/classes/META-INF/jkube/kubernetes/random-generator-deployment.yml | head -n10
---
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
jkube.io/git-url: [email protected]:rohanKanojia/eclipse-jkube-demo-project.git
jkube.io/git-commit: 1ef9ef2ef7a6fcbf8eb64c293f26f9c42d026512
jkube.io/git-branch: master
jkube.io/scm-url: https://github.com/spring-projects/spring-boot/spring-boot-starter-parent/random-generator
jkube.io/scm-tag: HEAD
~/work/repos/eclipse-jkube-demo-project : $
Igbesẹ 5. Fi ohun elo ranṣẹ si iṣupọ Kubernetes
Bayi a ti ṣeto gbogbo wa lati mu ohun elo naa ṣiṣẹ: a ti ṣe ipilẹṣẹ aworan rẹ lẹhinna ṣe ipilẹṣẹ awọn orisun orisun laifọwọyi. Bayi gbogbo nkan ti o ku ni lati lo gbogbo eyi si iṣupọ Kubernetes. Lati mu ohun elo naa lọ, o le, nitorinaa, lo aṣẹ kubectl apply -f, ṣugbọn ohun itanna le ṣe eyi fun wa. Eyi ni ohun ti yoo han loju iboju lẹhin ti a beere Eclipse JKube lati ṣiṣẹ mvn k8s: lo iṣẹ-ṣiṣe:
~/work/repos/eclipse-jkube-demo-project : $ mvn k8s:apply
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< meetup:random-generator >-----------------------
[INFO] Building random-generator 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- kubernetes-maven-plugin:1.0.0-rc-1:apply (default-cli) @ random-generator ---
[INFO] k8s: Using Kubernetes at https://192.168.39.145:8443/ in namespace default with manifest /home/rohaan/work/repos/eclipse-jkube-demo-project/target/classes/META-INF/jkube/kubernetes.yml
[INFO] k8s: Using namespace: default
[INFO] k8s: Creating a Service from kubernetes.yml namespace default name random-generator
[INFO] k8s: Created Service: target/jkube/applyJson/default/service-random-generator.json
[INFO] k8s: Creating a Deployment from kubernetes.yml namespace default name random-generator
[INFO] k8s: Created Deployment: target/jkube/applyJson/default/deployment-random-generator.json
[INFO] k8s: HINT: Use the command `kubectl get pods -w` to watch your pods start up
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 7.306 s
[INFO] Finished at: 2020-08-10T11:40:57+05:30
[INFO] ------------------------------------------------------------------------
~/work/repos/eclipse-jkube-demo-project : $ kubectl get pods -w
NAME READY STATUS RESTARTS AGE
random-generator-58b7847d7f-9m9df 0/1 Running 0 7s
random-generator-58b7847d7f-9m9df 1/1 Running 0 17s
^C~/work/repos/eclipse-jkube-demo-project : $ kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
io-openliberty-sample-getting-started NodePort 10.110.4.104 <none> 9080:30570/TCP 44h
kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 18d
random-generator NodePort 10.97.172.147 <none> 8080:32186/TCP 22s
~/work/repos/eclipse-jkube-demo-project : $ curl `minikube ip`:32186/random | jq .
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 45 0 45 0 0 1800 0 --:--:-- --:--:-- --:--:-- 1875
{
"id": "42e5571f-a20f-44b3-8184-370356581d10"
}
Igbesẹ 6. Undeploy awọn ohun elo lati inu iṣupọ Kubernetes
Lati ṣe eyi, iṣẹ-ṣiṣe ti ko ṣiṣẹ ni a lo, eyi ti o rọrun yọ gbogbo awọn orisun ti a lo ni igbesẹ ti tẹlẹ, eyini ni, nigbati iṣẹ-ṣiṣe ba ti ṣiṣẹ. Eyi ni ohun ti a yoo rii loju iboju lẹhin ti a beere Eclipse JKube lati ṣe mvn k8s: undeploy undeploy task:
~/work/repos/eclipse-jkube-demo-project : $ kubectl get all
NAME READY STATUS RESTARTS AGE
pod/random-generator-58b7847d7f-9m9df 1/1 Running 0 5m21s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 18d
service/random-generator NodePort 10.97.172.147 <none> 8080:32186/TCP 5m21s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/random-generator 1/1 1 1 5m21s
NAME DESIRED CURRENT READY AGE
replicaset.apps/random-generator-58b7847d7f 1 1 1 5m21s
~/work/repos/eclipse-jkube-demo-project : $ mvn k8s:undeploy
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< meetup:random-generator >-----------------------
[INFO] Building random-generator 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- kubernetes-maven-plugin:1.0.0-rc-1:undeploy (default-cli) @ random-generator ---
[INFO] k8s: Using Kubernetes at https://192.168.39.145:8443/ in namespace default with manifest /home/rohaan/work/repos/eclipse-jkube-demo-project/target/classes/META-INF/jkube/kubernetes.yml
[INFO] k8s: Using namespace: default
[INFO] k8s: Deleting resource Deployment default/random-generator
[INFO] k8s: Deleting resource Service default/random-generator
[INFO] k8s: HINT: Use the command `kubectl get pods -w` to watch your pods start up
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.412 s
[INFO] Finished at: 2020-08-10T11:46:22+05:30
[INFO] ------------------------------------------------------------------------
~/work/repos/eclipse-jkube-demo-project : $ kubectl get pods -w
^C~/work/repos/eclipse-jkube-demo-project : $ kubectl get all
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 18d
~/work/repos/eclipse-jkube-demo-project : $
Kini ohun miiran ti o le se pẹlu Eclipse JKube
Nitorinaa, a wo awọn iṣẹ ibi-afẹde akọkọ ti Eclipse JKube ati Kubernetes Maven Plugin, eyiti o dẹrọ idagbasoke awọn ohun elo Java fun pẹpẹ Kubernetes. Ti o ko ba fẹ lati tẹ awọn iṣẹ ṣiṣe wọnyi nigbagbogbo lati keyboard, o le kọ wọn sinu iṣeto ni ohun itanna, fun apẹẹrẹ, bii eyi:
<plugin>
<groupId>org.eclipse.jkube</groupId>
<artifactId>kubernetes-maven-plugin</artifactId>
<version>${project.version}</version>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>resource</goal>
<goal>apply</goal>
</goals>
</execution>
</executions>
</plugin>
O gbọdọ sọ pe ninu nkan yii a ko ṣe akiyesi gbogbo awọn iṣẹ ibi-afẹde ti o wa ni Eclipse JKube ati Kubernetes Maven Plugin, nitorinaa a pese ni tabili 2 atokọ ti awọn iṣẹ ṣiṣe afikun ti o tun le wulo fun ọ.
Tabili 2. Afikun Eclipse JKube awọn iṣẹ-ṣiṣe ìlépa.
Nkan
Ipele
Apejuwe
WERE
Gbigba awọn akọọlẹ lati ohun elo ti nṣiṣẹ lori Kubernetes.
package
Ṣii ibudo yokokoro ki o le ṣatunṣe ohun elo rẹ nṣiṣẹ lori Kubernetes taara lati IDE.
ẹrọ
Ṣiṣẹda orita kan fun iṣẹ-ṣiṣe Fi sori ẹrọ ati lilo awọn ifihan ti ipilẹṣẹ si iṣupọ Kubernetes ni ọna kanna bi ninu ọran ti iṣẹ-ṣiṣe ohun elo.
package
Ifilọlẹ gbigbona aifọwọyi ti ohun elo kan nipa titele aaye orukọ rẹ.
Gbigbe awọn ohun elo Java lori Red Hat OpenShift Lilo ohun itanna OpenShift Maven
Lati mu ohun elo naa ṣiṣẹ lati apẹẹrẹ wa lori pẹpẹ Red Hat OpenShift, a lo ohun itanna naa . Iyatọ kan ṣoṣo yoo jẹ pe asọtẹlẹ iṣẹ-ṣiṣe yoo yipada lati k8s si oc. Nipa aiyipada ohun itanna Kubernetes Maven ṣe -awọn apejọ, ati ohun itanna OpenShift Maven - awọn apejọ . A ko ṣe awọn ayipada eyikeyi si iṣẹ akanṣe wa miiran ju yiyọ ohun-ini jkube.generator.name kuro nitori ko nilo nigbati o ba titari si iforukọsilẹ (OpenShift gbe aworan naa sinu iforukọsilẹ ti inu rẹ lakoko ipele kikọ). Ati pe eyi ni ohun ti yoo han loju iboju nigbati a ba ṣiṣẹ apẹẹrẹ wa, ninu eyiti, nipasẹ ọna, a ṣe awọn iṣẹ ibi-afẹde kii ṣe ọkan ni akoko kan, ṣugbọn gbogbo ni ẹẹkan:
~/work/repos/eclipse-jkube-demo-project : $ mvn oc:build oc:resource oc:apply
[INFO] Scanning for projects...
[INFO]
[INFO] ----------------------< meetup:random-generator >-----------------------
[INFO] Building random-generator 0.0.1
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- openshift-maven-plugin:1.0.0-rc-1:build (default-cli) @ random-generator ---
[INFO] oc: Using OpenShift build with strategy S2I
[INFO] oc: Running in OpenShift mode
[INFO] oc: Running generator spring-boot
[INFO] oc: spring-boot: Using Docker image quay.io/jkube/jkube-java-binary-s2i:0.0.7 as base / builder
[INFO] oc: [random-generator:0.0.1] "spring-boot": Created docker source tar /home/rohaan/work/repos/eclipse-jkube-demo-project/target/docker/random-generator/0.0.1/tmp/docker-build.tar
[INFO] oc: Adding to Secret pullsecret-jkube
[INFO] oc: Using Secret pullsecret-jkube
[INFO] oc: Creating BuildServiceConfig random-generator-s2i for Source build
[INFO] oc: Creating ImageStream random-generator
[INFO] oc: Starting Build random-generator-s2i
[INFO] oc: Waiting for build random-generator-s2i-1 to complete...
[INFO] oc: Caching blobs under "/var/cache/blobs".
[INFO] oc: Getting image source signatures
[INFO] oc: Copying blob sha256:cf0f3ebe9f536c782ab3835049cfbd9a663761ded9370791ef6ea3965c823aad
[INFO] oc: Copying blob sha256:57de4da701b511cba33bbdc424757f7f3b408bea741ca714ace265da9b59191a
[INFO] oc: Copying blob sha256:f320f94d91a064281f5127d5f49954b481062c7d56cce3b09910e471cf849050
[INFO] oc: Copying config sha256:52d6788fcfdd39595264d34a3959464a5dabc1d4ef0ae188802b20fc2d6a857b
[INFO] oc: Writing manifest to image destination
[INFO] oc: Storing signatures
[INFO] oc: Generating dockerfile with builder image quay.io/jkube/jkube-java-binary-s2i:0.0.7
[INFO] oc: STEP 1: FROM quay.io/jkube/jkube-java-binary-s2i:0.0.7
[INFO] oc: STEP 2: LABEL "io.openshift.build.source-location"="/tmp/build/inputs" "io.openshift.build.image"="quay.io/jkube/jkube-java-binary-s2i:0.0.7"
[INFO] oc: STEP 3: ENV JAVA_APP_DIR="/deployments" OPENSHIFT_BUILD_NAME="random-generator-s2i-1" OPENSHIFT_BUILD_NAMESPACE="default"
[INFO] oc: STEP 4: USER root
[INFO] oc: STEP 5: COPY upload/src /tmp/src
[INFO] oc: STEP 6: RUN chown -R 1000:0 /tmp/src
[INFO] oc: STEP 7: USER 1000
[INFO] oc: STEP 8: RUN /usr/local/s2i/assemble
[INFO] oc: INFO S2I source build with plain binaries detected
[INFO] oc: INFO S2I binary build from fabric8-maven-plugin detected
[INFO] oc: INFO Copying binaries from /tmp/src/deployments to /deployments ...
[INFO] oc: random-generator-0.0.1.jar
[INFO] oc: INFO Copying deployments from deployments to /deployments...
[INFO] oc: '/tmp/src/deployments/random-generator-0.0.1.jar' -> '/deployments/random-generator-0.0.1.jar'
[INFO] oc: STEP 9: CMD /usr/local/s2i/run
[INFO] oc: STEP 10: COMMIT temp.builder.openshift.io/default/random-generator-s2i-1:48795e41
[INFO] oc: time="2020-08-10T06:37:49Z" level=info msg="Image operating system mismatch: image uses "", expecting "linux""
[INFO] oc: time="2020-08-10T06:37:49Z" level=info msg="Image architecture mismatch: image uses "", expecting "amd64""
[INFO] oc: Getting image source signatures
[INFO] oc: Copying blob sha256:d8e1f35641acb80b562f70cf49911341dfbe8c86f4d522b18efbf3732aa74223
[INFO] oc: Copying blob sha256:b6f081e4b2b6de8be4b1dec132043d14c121e968384dd624fb69c2c07b482edb
[INFO] oc: Copying blob sha256:b7139ad07aa8ce4ed5a132f7c5cc9f1de0f5099b5e155027a23d57f7fbe78b16
[INFO] oc: Copying blob sha256:98972fc90a1108315cc5b05b2c691a0849a149727a7b81e76bc847ac2c6d9714
[INFO] oc: Copying config sha256:27aaadaf28e24856a66db962b88118b8222b61d79163dceeeed869f7289bc230
[INFO] oc: Writing manifest to image destination
[INFO] oc: Storing signatures
[INFO] oc: --> 27aaadaf28e
[INFO] oc: 27aaadaf28e24856a66db962b88118b8222b61d79163dceeeed869f7289bc230
[INFO] oc: Getting image source signatures
[INFO] oc:
[INFO] oc: Pushing image image-registry.openshift-image-registry.svc:5000/default/random-generator:0.0.1 ...
[INFO] oc: Copying blob sha256:f320f94d91a064281f5127d5f49954b481062c7d56cce3b09910e471cf849050
[INFO] oc: Copying blob sha256:cf0f3ebe9f536c782ab3835049cfbd9a663761ded9370791ef6ea3965c823aad
[INFO] oc: Copying blob sha256:57de4da701b511cba33bbdc424757f7f3b408bea741ca714ace265da9b59191a
[INFO] oc: Copying blob sha256:98972fc90a1108315cc5b05b2c691a0849a149727a7b81e76bc847ac2c6d9714
[INFO] oc: Copying config sha256:27aaadaf28e24856a66db962b88118b8222b61d79163dceeeed869f7289bc230
[INFO] oc: Writing manifest to image destination
[INFO] oc: Storing signatures
[INFO] oc: Successfully pushed image-registry.openshift-image-registry.svc:5000/default/random-generator@sha256:aa9e1a380c04ef9174ba56459c13d44420ebe653ebf32884d60fe4306b17306d
[INFO] oc: Push successful
[INFO] oc: Build random-generator-s2i-1 in status Complete
[INFO] oc: Found tag on ImageStream random-generator tag: sha256:aa9e1a380c04ef9174ba56459c13d44420ebe653ebf32884d60fe4306b17306d
[INFO] oc: ImageStream random-generator written to /home/rohaan/work/repos/eclipse-jkube-demo-project/target/random-generator-is.yml
[INFO]
[INFO] --- openshift-maven-plugin:1.0.0-rc-1:resource (default-cli) @ random-generator ---
[INFO] oc: Using docker image name of namespace: default
[INFO] oc: Running generator spring-boot
[INFO] oc: spring-boot: Using Docker image quay.io/jkube/jkube-java-binary-s2i:0.0.7 as base / builder
[INFO] oc: jkube-controller: Adding a default DeploymentConfig
[INFO] oc: jkube-service: Adding a default service 'random-generator' with ports [8080]
[INFO] oc: jkube-healthcheck-spring-boot: Adding readiness probe on port 8080, path='/actuator/health', scheme='HTTP', with initial delay 10 seconds
[INFO] oc: jkube-healthcheck-spring-boot: Adding liveness probe on port 8080, path='/actuator/health', scheme='HTTP', with initial delay 180 seconds
[INFO] oc: jkube-revision-history: Adding revision history limit to 2
[INFO]
[INFO] --- openshift-maven-plugin:1.0.0-rc-1:apply (default-cli) @ random-generator ---
[INFO] oc: Using OpenShift at https://api.crc.testing:6443/ in namespace default with manifest /home/rohaan/work/repos/eclipse-jkube-demo-project/target/classes/META-INF/jkube/openshift.yml
[INFO] oc: OpenShift platform detected
[INFO] oc: Using project: default
[INFO] oc: Creating a Service from openshift.yml namespace default name random-generator
[INFO] oc: Created Service: target/jkube/applyJson/default/service-random-generator.json
[INFO] oc: Creating a DeploymentConfig from openshift.yml namespace default name random-generator
[INFO] oc: Created DeploymentConfig: target/jkube/applyJson/default/deploymentconfig-random-generator.json
[INFO] oc: Creating Route default:random-generator host: null
[INFO] oc: HINT: Use the command `oc get pods -w` to watch your pods start up
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:07 min
[INFO] Finished at: 2020-08-10T12:08:00+05:30
[INFO] ------------------------------------------------------------------------
~/work/repos/eclipse-jkube-demo-project : $ oc get pods -w
NAME READY STATUS RESTARTS AGE
random-generator-1-deploy 1/1 Running 0 14s
random-generator-1-vnrm9 0/1 Running 0 11s
random-generator-s2i-1-build 0/1 Completed 0 1m
random-generator-1-vnrm9 1/1 Running 0 24s
random-generator-1-deploy 0/1 Completed 0 28s
~/work/repos/eclipse-jkube-demo-project : $ oc get routes
NAME HOST/PORT PATH SERVICES PORT TERMINATION WILDCARD
random-generator random-generator-default.apps-crc.testing random-generator 8080 None
~/work/repos/eclipse-jkube-demo-project : $ curl random-generator-default.apps-crc.testing/random
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 45 0 45 0 0 1666 0 --:--:-- --:--:-- --:--:-- 1730
{
"id": "d80052d9-2f92-43cb-b9eb-d7cffb879798"
}
~/work/repos/eclipse-jkube-demo-project : $
Ẹkọ fidio
Lati kọ ẹkọ diẹ sii nipa bii o ṣe le jẹ ki idagbasoke Kubernetes rọrun pẹlu Eclipse JKube, wo ikẹkọ fidio yii lori bii o ṣe le mu ohun elo Boot Orisun kan ti o rọrun ni iyara lori Minikube:
ipari
Ninu àpilẹkọ yii, a fihan bi Eclipse JKube ṣe jẹ ki igbesi aye rọrun fun idagbasoke Java nigbati o n ṣiṣẹ pẹlu Kubernetes. Alaye diẹ sii lori Eclipse JKube ni a le rii ni ati lori .
orisun: www.habr.com