增加istio的植入sidecar说明
Jimmy Song
parent
5d8b62c37f
commit
dba002b591
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@ -0,0 +1,282 @@
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{
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"apiVersion": "v1",
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"kind": "Pod",
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"metadata": {
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"annotations": {
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"alpha.istio.io/sidecar": "injected",
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"alpha.istio.io/version": "jenkins@ubuntu-16-04-build-de3bbfab70500-0.1.5-21f4cb4",
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"kubernetes.io/created-by": "{\"kind\":\"SerializedReference\",\"apiVersion\":\"v1\",\"reference\":{\"kind\":\"ReplicaSet\",\"namespace\":\"default\",\"name\":\"productpage-v1-944450470\",\"uid\":\"a9061cc1-46ba-11e7-bfbd-8af1e3a7c5bd\",\"apiVersion\":\"extensions\",\"resourceVersion\":\"6701131\"}}\n",
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"pod.alpha.kubernetes.io/init-container-statuses": "[{\"name\":\"init\",\"state\":{\"terminated\":{\"exitCode\":0,\"reason\":\"Completed\",\"startedAt\":null,\"finishedAt\":\"2017-06-01T11:14:16Z\",\"containerID\":\"docker://4cf32c25a9fa6d17410ac79b5c6e1273f42e6430fa130179b0ef75a5eba1d032\"}},\"lastState\":{},\"ready\":true,\"restartCount\":0,\"image\":\"docker.io/istio/init:0.1\",\"imageID\":\"docker-pullable://docker.io/istio/init@sha256:54815172c106cf2b6631f2d49b3df1f4ace805bc95b830edde3d7b6017ed89d5\",\"containerID\":\"docker://4cf32c25a9fa6d17410ac79b5c6e1273f42e6430fa130179b0ef75a5eba1d032\"},{\"name\":\"enable-core-dump\",\"state\":{\"terminated\":{\"exitCode\":0,\"reason\":\"Completed\",\"startedAt\":null,\"finishedAt\":\"2017-06-01T11:14:33Z\",\"containerID\":\"docker://e0442172d07fc17d7a17de61fa229117ffca8c241b95c5065d928b07851f5314\"}},\"lastState\":{},\"ready\":true,\"restartCount\":0,\"image\":\"docker.io/alpine:latest\",\"imageID\":\"docker-pullable://docker.io/alpine@sha256:0b94d1d1b5eb130dd0253374552445b39470653fb1a1ec2d81490948876e462c\",\"containerID\":\"docker://e0442172d07fc17d7a17de61fa229117ffca8c241b95c5065d928b07851f5314\"}]",
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"pod.alpha.kubernetes.io/init-containers": "[{\"name\":\"init\",\"image\":\"docker.io/istio/init:0.1\",\"args\":[\"-p\",\"15001\",\"-u\",\"1337\"],\"resources\":{},\"volumeMounts\":[{\"name\":\"default-token-3l9f0\",\"readOnly\":true,\"mountPath\":\"/var/run/secrets/kubernetes.io/serviceaccount\"}],\"terminationMessagePath\":\"/dev/termination-log\",\"terminationMessagePolicy\":\"File\",\"imagePullPolicy\":\"Always\",\"securityContext\":{\"capabilities\":{\"add\":[\"NET_ADMIN\"]}}},{\"name\":\"enable-core-dump\",\"image\":\"alpine\",\"command\":[\"/bin/sh\"],\"args\":[\"-c\",\"sysctl -w kernel.core_pattern=/tmp/core.%e.%p.%t \\u0026\\u0026 ulimit -c unlimited\"],\"resources\":{},\"volumeMounts\":[{\"name\":\"default-token-3l9f0\",\"readOnly\":true,\"mountPath\":\"/var/run/secrets/kubernetes.io/serviceaccount\"}],\"terminationMessagePath\":\"/dev/termination-log\",\"terminationMessagePolicy\":\"File\",\"imagePullPolicy\":\"Always\",\"securityContext\":{\"privileged\":true}}]",
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"pod.beta.kubernetes.io/init-container-statuses": "[{\"name\":\"init\",\"state\":{\"terminated\":{\"exitCode\":0,\"reason\":\"Completed\",\"startedAt\":null,\"finishedAt\":\"2017-06-01T11:14:16Z\",\"containerID\":\"docker://4cf32c25a9fa6d17410ac79b5c6e1273f42e6430fa130179b0ef75a5eba1d032\"}},\"lastState\":{},\"ready\":true,\"restartCount\":0,\"image\":\"docker.io/istio/init:0.1\",\"imageID\":\"docker-pullable://docker.io/istio/init@sha256:54815172c106cf2b6631f2d49b3df1f4ace805bc95b830edde3d7b6017ed89d5\",\"containerID\":\"docker://4cf32c25a9fa6d17410ac79b5c6e1273f42e6430fa130179b0ef75a5eba1d032\"},{\"name\":\"enable-core-dump\",\"state\":{\"terminated\":{\"exitCode\":0,\"reason\":\"Completed\",\"startedAt\":null,\"finishedAt\":\"2017-06-01T11:14:33Z\",\"containerID\":\"docker://e0442172d07fc17d7a17de61fa229117ffca8c241b95c5065d928b07851f5314\"}},\"lastState\":{},\"ready\":true,\"restartCount\":0,\"image\":\"docker.io/alpine:latest\",\"imageID\":\"docker-pullable://docker.io/alpine@sha256:0b94d1d1b5eb130dd0253374552445b39470653fb1a1ec2d81490948876e462c\",\"containerID\":\"docker://e0442172d07fc17d7a17de61fa229117ffca8c241b95c5065d928b07851f5314\"}]",
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"pod.beta.kubernetes.io/init-containers": "[{\"name\":\"init\",\"image\":\"docker.io/istio/init:0.1\",\"args\":[\"-p\",\"15001\",\"-u\",\"1337\"],\"resources\":{},\"volumeMounts\":[{\"name\":\"default-token-3l9f0\",\"readOnly\":true,\"mountPath\":\"/var/run/secrets/kubernetes.io/serviceaccount\"}],\"terminationMessagePath\":\"/dev/termination-log\",\"terminationMessagePolicy\":\"File\",\"imagePullPolicy\":\"Always\",\"securityContext\":{\"capabilities\":{\"add\":[\"NET_ADMIN\"]}}},{\"name\":\"enable-core-dump\",\"image\":\"alpine\",\"command\":[\"/bin/sh\"],\"args\":[\"-c\",\"sysctl -w kernel.core_pattern=/tmp/core.%e.%p.%t \\u0026\\u0026 ulimit -c unlimited\"],\"resources\":{},\"volumeMounts\":[{\"name\":\"default-token-3l9f0\",\"readOnly\":true,\"mountPath\":\"/var/run/secrets/kubernetes.io/serviceaccount\"}],\"terminationMessagePath\":\"/dev/termination-log\",\"terminationMessagePolicy\":\"File\",\"imagePullPolicy\":\"Always\",\"securityContext\":{\"privileged\":true}}]"
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},
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"creationTimestamp": "2017-06-01T11:08:37Z",
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"generateName": "productpage-v1-944450470-",
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"labels": {
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"app": "productpage",
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"pod-template-hash": "944450470",
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"version": "v1"
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},
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"name": "productpage-v1-944450470-bd530",
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"namespace": "default",
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"ownerReferences": [
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{
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"apiVersion": "extensions/v1beta1",
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"blockOwnerDeletion": true,
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"controller": true,
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"kind": "ReplicaSet",
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"name": "productpage-v1-944450470",
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"uid": "a9061cc1-46ba-11e7-bfbd-8af1e3a7c5bd"
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}
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],
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"resourceVersion": "6701985",
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"selfLink": "/api/v1/namespaces/default/pods/productpage-v1-944450470-bd530",
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"uid": "a906b1eb-46ba-11e7-bfbd-8af1e3a7c5bd"
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},
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"spec": {
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"containers": [
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{
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"image": "sz-pg-oam-docker-hub-001.tendcloud.com/library/examples-bookinfo-productpage-v1",
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"imagePullPolicy": "IfNotPresent",
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"name": "productpage",
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"ports": [
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{
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"containerPort": 9080,
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"protocol": "TCP"
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}
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],
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"resources": {},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File",
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"volumeMounts": [
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{
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"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
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"name": "default-token-3l9f0",
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"readOnly": true
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}
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]
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},
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{
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"args": [
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"proxy",
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"sidecar",
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"-v",
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"2"
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],
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"env": [
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{
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"name": "POD_NAME",
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"valueFrom": {
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"fieldRef": {
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"apiVersion": "v1",
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"fieldPath": "metadata.name"
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}
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}
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},
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{
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"name": "POD_NAMESPACE",
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"valueFrom": {
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"fieldRef": {
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"apiVersion": "v1",
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"fieldPath": "metadata.namespace"
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}
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}
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},
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{
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"name": "POD_IP",
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"valueFrom": {
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"fieldRef": {
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"apiVersion": "v1",
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"fieldPath": "status.podIP"
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}
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}
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}
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],
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"image": "docker.io/istio/proxy_debug:0.1",
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"imagePullPolicy": "Always",
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"name": "proxy",
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"resources": {},
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"securityContext": {
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"runAsUser": 1337
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},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File",
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"volumeMounts": [
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{
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"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
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"name": "default-token-3l9f0",
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"readOnly": true
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}
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]
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}
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],
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"dnsPolicy": "ClusterFirst",
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"initContainers": [
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{
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"args": [
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"-p",
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"15001",
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"-u",
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"1337"
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],
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"image": "docker.io/istio/init:0.1",
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"imagePullPolicy": "Always",
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"name": "init",
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"resources": {},
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"securityContext": {
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"capabilities": {
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"add": [
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"NET_ADMIN"
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]
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}
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},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File",
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"volumeMounts": [
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{
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"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
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"name": "default-token-3l9f0",
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"readOnly": true
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}
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]
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},
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{
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"args": [
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"-c",
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"sysctl -w kernel.core_pattern=/tmp/core.%e.%p.%t \u0026\u0026 ulimit -c unlimited"
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],
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"command": [
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"/bin/sh"
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],
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"image": "alpine",
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"imagePullPolicy": "Always",
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"name": "enable-core-dump",
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"resources": {},
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"securityContext": {
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"privileged": true
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},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File",
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"volumeMounts": [
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{
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"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
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"name": "default-token-3l9f0",
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"readOnly": true
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}
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]
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}
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],
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"nodeName": "172.20.0.115",
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"restartPolicy": "Always",
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"schedulerName": "default-scheduler",
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"securityContext": {},
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"serviceAccount": "default",
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"serviceAccountName": "default",
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"terminationGracePeriodSeconds": 30,
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"volumes": [
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{
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"name": "default-token-3l9f0",
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"secret": {
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"defaultMode": 420,
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"secretName": "default-token-3l9f0"
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}
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}
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]
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},
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"status": {
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"conditions": [
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{
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"lastProbeTime": null,
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"lastTransitionTime": "2017-06-01T11:14:33Z",
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"status": "True",
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"type": "Initialized"
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},
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{
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"lastProbeTime": null,
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"lastTransitionTime": "2017-06-01T11:14:38Z",
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"status": "True",
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"type": "Ready"
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},
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{
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"lastProbeTime": null,
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"lastTransitionTime": "2017-06-01T11:08:37Z",
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"status": "True",
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"type": "PodScheduled"
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}
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],
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"containerStatuses": [
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{
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"containerID": "docker://686c609d0343b73f2e9fac39f6439203de776810c409546571f411301db2f164",
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"image": "sz-pg-oam-docker-hub-001.tendcloud.com/library/examples-bookinfo-productpage-v1:latest",
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"imageID": "docker-pullable://sz-pg-oam-docker-hub-001.tendcloud.com/library/examples-bookinfo-productpage-v1@sha256:fceb387d10815a5be86322335e07358ce5398c686947e510c2454cfbb98c4c46",
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"lastState": {},
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"name": "productpage",
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"ready": true,
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"restartCount": 0,
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"state": {
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"running": {
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"startedAt": "2017-06-01T11:14:34Z"
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}
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}
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},
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{
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"containerID": "docker://b380e181fb0310651c7048a9dab14c360a5d7e62ad6ee735b1dd40bc42fbad7b",
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"image": "docker.io/istio/proxy_debug:0.1",
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"imageID": "docker-pullable://docker.io/istio/proxy_debug@sha256:0a3f8798f94e56897ca2759aa135843d0e6e2bb74d5d834f2eb1efe94f2a7c38",
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"lastState": {},
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"name": "proxy",
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"ready": true,
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"restartCount": 0,
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"state": {
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"running": {
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"startedAt": "2017-06-01T11:14:38Z"
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}
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}
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}
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],
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"hostIP": "172.20.0.115",
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"initContainerStatuses": [
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{
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"containerID": "docker://4cf32c25a9fa6d17410ac79b5c6e1273f42e6430fa130179b0ef75a5eba1d032",
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"image": "docker.io/istio/init:0.1",
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"imageID": "docker-pullable://docker.io/istio/init@sha256:54815172c106cf2b6631f2d49b3df1f4ace805bc95b830edde3d7b6017ed89d5",
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"lastState": {},
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"name": "init",
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"ready": true,
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"restartCount": 0,
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"state": {
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"terminated": {
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"containerID": "docker://4cf32c25a9fa6d17410ac79b5c6e1273f42e6430fa130179b0ef75a5eba1d032",
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"exitCode": 0,
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"finishedAt": "2017-06-01T11:14:16Z",
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"reason": "Completed",
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"startedAt": null
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}
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}
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},
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{
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"containerID": "docker://e0442172d07fc17d7a17de61fa229117ffca8c241b95c5065d928b07851f5314",
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"image": "docker.io/alpine:latest",
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"imageID": "docker-pullable://docker.io/alpine@sha256:0b94d1d1b5eb130dd0253374552445b39470653fb1a1ec2d81490948876e462c",
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"lastState": {},
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"name": "enable-core-dump",
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"ready": true,
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"restartCount": 0,
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"state": {
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"terminated": {
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"containerID": "docker://e0442172d07fc17d7a17de61fa229117ffca8c241b95c5065d928b07851f5314",
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"exitCode": 0,
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"finishedAt": "2017-06-01T11:14:33Z",
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"reason": "Completed",
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"startedAt": null
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}
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}
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}
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],
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"phase": "Running",
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"podIP": "172.30.60.7",
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"qosClass": "BestEffort",
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"startTime": "2017-06-01T11:08:37Z"
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}
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}
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@ -237,6 +237,72 @@ kubectl create -f <(istioctl kube-inject -f samples/apps/bookinfo/bookinfo.yaml)
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多次刷新页面，你会发现有的页面上的评论里有星级打分，有的页面就没有，这是因为我们部署了三个版本的应用，有的应用里包含了评分，有的没有。Istio根据默认策略随机将流量分配到三个版本的应用上。
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查看部署的bookinfo应用中的`productpage-v1` service和deployment，查看`productpage-v1`的pod的详细json信息可以看到这样的结构：
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```bash
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$ kubectl get productpage-v1-944450470-bd530 -o json
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```
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见[productpage-v1-istio.json](../manifests/istio/productpage-v1-istio.json)文件。从详细输出中可以看到这个Pod中实际有两个容器，这里面包括了`initContainer`，作为istio植入到kubernetes deployment中的sidecar。
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```json
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"initContainers": [
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{
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"args": [
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"-p",
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"15001",
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"-u",
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"1337"
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],
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"image": "docker.io/istio/init:0.1",
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"imagePullPolicy": "Always",
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"name": "init",
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"resources": {},
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"securityContext": {
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"capabilities": {
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"add": [
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"NET_ADMIN"
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]
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}
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},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File",
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"volumeMounts": [
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{
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"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
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"name": "default-token-3l9f0",
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"readOnly": true
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}
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]
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},
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{
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"args": [
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"-c",
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"sysctl -w kernel.core_pattern=/tmp/core.%e.%p.%t \u0026\u0026 ulimit -c unlimited"
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],
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"command": [
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"/bin/sh"
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],
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"image": "alpine",
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"imagePullPolicy": "Always",
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"name": "enable-core-dump",
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"resources": {},
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"securityContext": {
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"privileged": true
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},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File",
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"volumeMounts": [
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{
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"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
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"name": "default-token-3l9f0",
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"readOnly": true
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}
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]
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}
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],
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```
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## 监控
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不断刷新productpage页面，将可以在以下几个监控中看到如下界面。
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Reference in New Issue