kubectl 补丁不能应用于 ConfigMap 数据

Question

发生了什么：

当我将补丁应用到ConfigMap时，它运行不好。(Error from server: v1.ConfigMap.Data: ReadString: expects " or n, but found {, error found in #10 byte of ...|"config":{"template"|..., bigger context ...|{"apiVersion":"v1","data":{"config":{"template":{"containers":[{"lifecycle":{"preStop":|...(

gsed运行良好，但我想知道`kubectl

命令

$ kubectl patch configmap/cm-test-toshi -n dev --type merge -p '{
"data":{
"config":{
"template":{
"containers":[{
"name":"istio-proxy",
"lifecycle":{
"preStop":{
"exec":{
"command":["/bin/sh", "-c", "while [ $(netstat -plunt | grep tcp | grep -v envoy | wc -l | xargs) -ne 0]; do sleep 1; done"]
}
}
}
}]
}
}
}
}'

目标CondigMap

apiVersion: v1
data:
config: |-
policy: disabled
alwaysInjectSelector:
[]
neverInjectSelector:
[]
template: |
initContainers:
- name: istio-validation
...
containers:
- name: istio-proxy
{{- if contains "/" (annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image) }}
image: "{{ annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image }}"
{{- else }}
image: "{{ .Values.global.hub }}/{{ .Values.global.proxy.image }}:{{ .Values.global.tag }}"
{{- end }}
ports:
...

您期望发生的事情：

没有出现错误，并且应用了data.condif.template.containers[].lifecycle.preStop.exec.command。

apiVersion: v1
data:
config: |-
policy: disabled
alwaysInjectSelector:
[]
neverInjectSelector:
[]
template: |
initContainers:
- name: istio-validation
...
containers:
containers:
- name: istio-proxy
lifecycle:     # added
preStop:   # added
exec:       # added
command:  ["/bin/sh", "-c", "while [ $(netstat -plunt | grep tcp | grep -v envoy | wc -l | xargs) -ne 0 ]; do sleep 1; done"] # added
{{- if contains "/" (annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image) }}
image: "{{ annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image }}"
{{- else }}
image: "{{ .Values.global.hub }}/{{ .Values.global.proxy.image }}:{{ .Values.global.tag }}"
{{- end }}
ports:
...

如何复制(尽可能少且精确(：

1. 创建配置映射

$ kubectl apply -f cm-test-toshi.yaml

cm-test-toshi.yaml

apiVersion: v1
data:
config: |-
policy: disabled
alwaysInjectSelector:
[]
neverInjectSelector:
[]
template: |
{{- $cniDisabled := (not .Values.istio_cni.enabled) }}
{{- $cniRepairEnabled := (and .Values.istio_cni.enabled .Values.istio_cni.repair.enabled) }}
{{- $enableInitContainer := (or $cniDisabled $cniRepairEnabled .Values.global.proxy.enableCoreDump) }}
rewriteAppHTTPProbe: {{ valueOrDefault .Values.sidecarInjectorWebhook.rewriteAppHTTPProbe false }}
{{- if $enableInitContainer }}
containers:
- name: istio-proxy
{{- if contains "/" (annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image) }}
image: "{{ annotation .ObjectMeta `sidecar.istio.io/proxyImage` .Values.global.proxy.image }}"
{{- else }}
image: "{{ .Values.global.hub }}/{{ .Values.global.proxy.image }}:{{ .Values.global.tag }}"
{{- end }}
ports:
- containerPort: 15090
protocol: TCP
name: http-envoy-prom
args:
- proxy
- sidecar
- --domain
- $(POD_NAMESPACE).svc.{{ .Values.global.proxy.clusterDomain }}
- --configPath
- "/etc/istio/proxy"
- --binaryPath
- "/usr/local/bin/envoy"
- --serviceCluster
{{ if ne "" (index .ObjectMeta.Labels "app") -}}
- "{{ index .ObjectMeta.Labels `app` }}.$(POD_NAMESPACE)"
{{ else -}}
- "{{ valueOrDefault .DeploymentMeta.Name `istio-proxy` }}.{{ valueOrDefault .DeploymentMeta.Namespace `default` }}"
{{ end -}}
- --drainDuration
- "{{ formatDuration .ProxyConfig.DrainDuration }}"
- --parentShutdownDuration
- "{{ formatDuration .ProxyConfig.ParentShutdownDuration }}"
- --discoveryAddress
- "{{ annotation .ObjectMeta `sidecar.istio.io/discoveryAddress` .ProxyConfig.DiscoveryAddress }}"
{{- if eq .Values.global.proxy.tracer "lightstep" }}
- --lightstepAddress
- "{{ .ProxyConfig.GetTracing.GetLightstep.GetAddress }}"
- --lightstepAccessToken
- "{{ .ProxyConfig.GetTracing.GetLightstep.GetAccessToken }}"
- --lightstepSecure={{ .ProxyConfig.GetTracing.GetLightstep.GetSecure }}
- --lightstepCacertPath
- "{{ .ProxyConfig.GetTracing.GetLightstep.GetCacertPath }}"
{{- else if eq .Values.global.proxy.tracer "zipkin" }}
- --zipkinAddress
- "{{ .ProxyConfig.GetTracing.GetZipkin.GetAddress }}"
{{- else if eq .Values.global.proxy.tracer "datadog" }}
- --datadogAgentAddress
- "{{ .ProxyConfig.GetTracing.GetDatadog.GetAddress }}"
{{- end }}
- --proxyLogLevel={{ annotation .ObjectMeta `sidecar.istio.io/logLevel` .Values.global.proxy.logLevel}}
- --proxyComponentLogLevel={{ annotation .ObjectMeta `sidecar.istio.io/componentLogLevel` .Values.global.proxy.componentLogLevel}}
- --connectTimeout
- "{{ formatDuration .ProxyConfig.ConnectTimeout }}"
{{- if .Values.global.proxy.envoyStatsd.enabled }}
- --statsdUdpAddress
- "{{ .ProxyConfig.StatsdUdpAddress }}"
{{- end }}
{{- if .Values.global.proxy.envoyMetricsService.enabled }}
- --envoyMetricsServiceAddress
- "{{ .ProxyConfig.GetEnvoyMetricsService.GetAddress }}"
{{- end }}
{{- if .Values.global.proxy.envoyAccessLogService.enabled }}
- --envoyAccessLogServiceAddress
- "{{ .ProxyConfig.GetEnvoyAccessLogService.GetAddress }}"
{{- end }}
- --proxyAdminPort
- "{{ .ProxyConfig.ProxyAdminPort }}"
{{ if gt .ProxyConfig.Concurrency 0 -}}
- --concurrency
- "{{ .ProxyConfig.Concurrency }}"
{{ end -}}
{{- if .Values.global.controlPlaneSecurityEnabled }}
- --controlPlaneAuthPolicy
- MUTUAL_TLS
{{- else }}
- --controlPlaneAuthPolicy
- NONE
{{- end }}
- --dnsRefreshRate
- {{ valueOrDefault .Values.global.proxy.dnsRefreshRate "300s" }}
{{- if (ne (annotation .ObjectMeta "status.sidecar.istio.io/port" .Values.global.proxy.statusPort) "0") }}
- --statusPort
- "{{ annotation .ObjectMeta `status.sidecar.istio.io/port` .Values.global.proxy.statusPort }}"
- --applicationPorts
- "{{ annotation .ObjectMeta `readiness.status.sidecar.istio.io/applicationPorts` (applicationPorts .Spec.Containers) }}"
{{- end }}
{{- if .Values.global.trustDomain }}
- --trust-domain={{ .Values.global.trustDomain }}
{{- end }}
{{- if .Values.global.logAsJson }}
- --log_as_json
{{- end }}
{{- if (isset .ObjectMeta.Annotations `sidecar.istio.io/bootstrapOverride`) }}
- --templateFile=/etc/istio/custom-bootstrap/envoy_bootstrap.json
{{- end }}
{{- if .Values.global.proxy.lifecycle }}
lifecycle:
{{ toYaml .Values.global.proxy.lifecycle | indent 4 }}
{{- end }}
env:
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: INSTANCE_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
- name: SERVICE_ACCOUNT
valueFrom:
fieldRef:
fieldPath: spec.serviceAccountName
- name: HOST_IP
valueFrom:
fieldRef:
fieldPath: status.hostIP
{{- if eq .Values.global.proxy.tracer "datadog" }}
{{- if isset .ObjectMeta.Annotations `apm.datadoghq.com/env` }}
{{- range $key, $value := fromJSON (index .ObjectMeta.Annotations `apm.datadoghq.com/env`) }}
- name: {{ $key }}
value: "{{ $value }}"
{{- end }}
{{- end }}
{{- end }}
- name: ISTIO_META_POD_PORTS
value: |-
[
{{- $first := true }}
{{- range $index1, $c := .Spec.Containers }}
{{- range $index2, $p := $c.Ports }}
{{- if (structToJSON $p) }}
{{if not $first}},{{end}}{{ structToJSON $p }}
{{- $first = false }}
{{- end }}
{{- end}}
{{- end}}
]
- name: ISTIO_META_CLUSTER_ID
value: "{{ valueOrDefault .Values.global.multiCluster.clusterName `Kubernetes` }}"
- name: ISTIO_META_POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
- name: ISTIO_META_CONFIG_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: SDS_ENABLED
value: "{{ .Values.global.sds.enabled }}"
- name: ISTIO_META_INTERCEPTION_MODE
value: "{{ or (index .ObjectMeta.Annotations `sidecar.istio.io/interceptionMode`) .ProxyConfig.InterceptionMode.String }}"
- name: ISTIO_META_INCLUDE_INBOUND_PORTS
value: "{{ annotation .ObjectMeta `traffic.sidecar.istio.io/includeInboundPorts` (applicationPorts .Spec.Containers) }}"
{{- if .Values.global.network }}
- name: ISTIO_META_NETWORK
value: "{{ .Values.global.network }}"
{{- end }}
{{ if .ObjectMeta.Annotations }}
- name: ISTIO_METAJSON_ANNOTATIONS
value: |
{{ toJSON .ObjectMeta.Annotations }}
{{ end }}
{{ if .ObjectMeta.Labels }}
- name: ISTIO_METAJSON_LABELS
value: |
{{ toJSON .ObjectMeta.Labels }}
{{ end }}
{{- if .DeploymentMeta.Name }}
- name: ISTIO_META_WORKLOAD_NAME
value: {{ .DeploymentMeta.Name }}
{{ end }}
{{- if and .TypeMeta.APIVersion .DeploymentMeta.Name }}
- name: ISTIO_META_OWNER
value: kubernetes://apis/{{ .TypeMeta.APIVersion }}/namespaces/{{ valueOrDefault .DeploymentMeta.Namespace `default` }}/{{ toLower .TypeMeta.Kind}}s/{{ .DeploymentMeta.Name }}
{{- end}}
{{- if (isset .ObjectMeta.Annotations `sidecar.istio.io/bootstrapOverride`) }}
- name: ISTIO_BOOTSTRAP_OVERRIDE
value: "/etc/istio/custom-bootstrap/custom_bootstrap.json"
{{- end }}
{{- if .Values.global.sds.customTokenDirectory }}
- name: ISTIO_META_SDS_TOKEN_PATH
value: "{{ .Values.global.sds.customTokenDirectory -}}/sdstoken"
{{- end }}
{{- if .Values.global.meshID }}
- name: ISTIO_META_MESH_ID
value: "{{ .Values.global.meshID }}"
{{- else if .Values.global.trustDomain }}
- name: ISTIO_META_MESH_ID
value: "{{ .Values.global.trustDomain }}"
{{- end }}
{{- if and (eq .Values.global.proxy.tracer "datadog") (isset .ObjectMeta.Annotations `apm.datadoghq.com/env`) }}
{{- range $key, $value := fromJSON (index .ObjectMeta.Annotations `apm.datadoghq.com/env`) }}
- name: {{ $key }}
value: "{{ $value }}"
{{- end }}
{{- end }}
imagePullPolicy: "{{ valueOrDefault .Values.global.imagePullPolicy `Always` }}"
{{ if ne (annotation .ObjectMeta `status.sidecar.istio.io/port` .Values.global.proxy.statusPort) `0` }}
readinessProbe:
httpGet:
path: /healthz/ready
port: {{ annotation .ObjectMeta `status.sidecar.istio.io/port` .Values.global.proxy.statusPort }}
initialDelaySeconds: {{ annotation .ObjectMeta `readiness.status.sidecar.istio.io/initialDelaySeconds` .Values.global.proxy.readinessInitialDelaySeconds }}
periodSeconds: {{ annotation .ObjectMeta `readiness.status.sidecar.istio.io/periodSeconds` .Values.global.proxy.readinessPeriodSeconds }}
failureThreshold: {{ annotation .ObjectMeta `readiness.status.sidecar.istio.io/failureThreshold` .Values.global.proxy.readinessFailureThreshold }}
{{ end -}}
securityContext:
allowPrivilegeEscalation: {{ .Values.global.proxy.privileged }}
capabilities:
{{ if eq (annotation .ObjectMeta `sidecar.istio.io/interceptionMode` .ProxyConfig.InterceptionMode) `TPROXY` -}}
add:
- NET_ADMIN
{{- end }}
drop:
- ALL
privileged: {{ .Values.global.proxy.privileged }}
readOnlyRootFilesystem: {{ not .Values.global.proxy.enableCoreDump }}
runAsGroup: 1337
{{ if eq (annotation .ObjectMeta `sidecar.istio.io/interceptionMode` .ProxyConfig.InterceptionMode) `TPROXY` -}}
runAsNonRoot: false
runAsUser: 0
{{- else -}}
runAsNonRoot: true
runAsUser: 1337
{{- end }}
resources:
{{ if or (isset .ObjectMeta.Annotations `sidecar.istio.io/proxyCPU`) (isset .ObjectMeta.Annotations `sidecar.istio.io/proxyMemory`) -}}
requests:
{{ if (isset .ObjectMeta.Annotations `sidecar.istio.io/proxyCPU`) -}}
cpu: "{{ index .ObjectMeta.Annotations `sidecar.istio.io/proxyCPU` }}"
{{ end}}
{{ if (isset .ObjectMeta.Annotations `sidecar.istio.io/proxyMemory`) -}}
memory: "{{ index .ObjectMeta.Annotations `sidecar.istio.io/proxyMemory` }}"
{{ end }}
{{ else -}}
{{- if .Values.global.proxy.resources }}
{{ toYaml .Values.global.proxy.resources | indent 4 }}
{{- end }}
{{  end -}}
volumeMounts:
{{ if (isset .ObjectMeta.Annotations `sidecar.istio.io/bootstrapOverride`) }}
- mountPath: /etc/istio/custom-bootstrap
name: custom-bootstrap-volume
{{- end }}
- mountPath: /etc/istio/proxy
name: istio-envoy
{{- if .Values.global.sds.enabled }}
- mountPath: /var/run/sds
name: sds-uds-path
readOnly: true
- mountPath: /var/run/secrets/tokens
name: istio-token
{{- if .Values.global.sds.customTokenDirectory }}
- mountPath: "{{ .Values.global.sds.customTokenDirectory -}}"
name: custom-sds-token
readOnly: true
{{- end }}
{{- else }}
- mountPath: /etc/certs/
name: istio-certs
readOnly: true
{{- end }}
{{- if and (eq .Values.global.proxy.tracer "lightstep") .Values.global.tracer.lightstep.cacertPath }}
- mountPath: {{ directory .ProxyConfig.GetTracing.GetLightstep.GetCacertPath }}
name: lightstep-certs
readOnly: true
{{- end }}
{{- if isset .ObjectMeta.Annotations `sidecar.istio.io/userVolumeMount` }}
{{ range $index, $value := fromJSON (index .ObjectMeta.Annotations `sidecar.istio.io/userVolumeMount`) }}
- name: "{{  $index }}"
{{ toYaml $value | indent 4 }}
{{ end }}
{{- end }}
volumes:
{{- if (isset .ObjectMeta.Annotations `sidecar.istio.io/bootstrapOverride`) }}
- name: custom-bootstrap-volume
configMap:
name: {{ annotation .ObjectMeta `sidecar.istio.io/bootstrapOverride` "" }}
{{- end }}
- emptyDir:
medium: Memory
name: istio-envoy
{{- if .Values.global.sds.enabled }}
- name: sds-uds-path
hostPath:
path: /var/run/sds
- name: istio-token
projected:
sources:
- serviceAccountToken:
path: istio-token
expirationSeconds: 43200
audience: {{ .Values.global.sds.token.aud }}
{{- if .Values.global.sds.customTokenDirectory }}
- name: custom-sds-token
secret:
secretName: sdstokensecret
{{- end }}
{{- else }}
- name: istio-certs
secret:
optional: true
{{ if eq .Spec.ServiceAccountName "" }}
secretName: istio.default
{{ else -}}
secretName: {{  printf "istio.%s" .Spec.ServiceAccountName }}
{{  end -}}
{{- if isset .ObjectMeta.Annotations `sidecar.istio.io/userVolume` }}
{{range $index, $value := fromJSON (index .ObjectMeta.Annotations `sidecar.istio.io/userVolume`) }}
- name: "{{ $index }}"
{{ toYaml $value | indent 2 }}
{{ end }}
{{ end }}
{{- end }}
{{- if and (eq .Values.global.proxy.tracer "lightstep") .Values.global.tracer.lightstep.cacertPath }}
- name: lightstep-certs
secret:
optional: true
secretName: lightstep.cacert
{{- end }}
{{- if .Values.global.podDNSSearchNamespaces }}
dnsConfig:
searches:
{{- range .Values.global.podDNSSearchNamespaces }}
- {{ render . }}
{{- end }}
{{- end }}
injectedAnnotations:
values: '{"certmanager":{"enabled":false,"hub":"quay.io/jetstack","image":"cert-manager-controller","namespace":"istio-system","tag":"v0.6.2"},"clusterResources":true,"cni":{"namespace":"istio-system"},"galley":{"enableAnalysis":false,"enabled":false,"image":"galley","namespace":"istio-system"},"gateways":{"istio-egressgateway":{"autoscaleEnabled":true,"enabled":false,"env":{"ISTIO_META_ROUTER_MODE":"sni-dnat"},"namespace":"istio-system","ports":[{"name":"http2","port":80},{"name":"https","port":443},{"name":"tls","port":15443,"targetPort":15443}],"secretVolumes":[{"mountPath":"/etc/istio/egressgateway-certs","name":"egressgateway-certs","secretName":"istio-egressgateway-certs"},{"mountPath":"/etc/istio/egressgateway-ca-certs","name":"egressgateway-ca-certs","secretName":"istio-egressgateway-ca-certs"}],"type":"ClusterIP","zvpn":{"enabled":true,"suffix":"global"}},"istio-ingressgateway":{"applicationPorts":"","autoscaleEnabled":true,"debug":"info","domain":"","enabled":false,"env":{"ISTIO_META_ROUTER_MODE":"sni-dnat"},"meshExpansionPorts":[{"name":"tcp-pilot-grpc-tls","port":15011,"targetPort":15011},{"name":"tcp-citadel-grpc-tls","port":8060,"targetPort":8060},{"name":"tcp-dns-tls","port":853,"targetPort":853}],"namespace":"istio-system","ports":[{"name":"status-port","port":15020,"targetPort":15020},{"name":"http2","port":80,"targetPort":80},{"name":"https","port":443},{"name":"kiali","port":15029,"targetPort":15029},{"name":"prometheus","port":15030,"targetPort":15030},{"name":"grafana","port":15031,"targetPort":15031},{"name":"tracing","port":15032,"targetPort":15032},{"name":"tls","port":15443,"targetPort":15443}],"sds":{"enabled":false,"image":"node-agent-k8s","resources":{"limits":{"cpu":"2000m","memory":"1024Mi"},"requests":{"cpu":"100m","memory":"128Mi"}}},"secretVolumes":[{"mountPath":"/etc/istio/ingressgateway-certs","name":"ingressgateway-certs","secretName":"istio-ingressgateway-certs"},{"mountPath":"/etc/istio/ingressgateway-ca-certs","name":"ingressgateway-ca-certs","secretName":"istio-ingressgateway-ca-certs"}],"type":"LoadBalancer","zvpn":{"enabled":true,"suffix":"global"}}},"global":{"arch":{"amd64":2,"ppc64le":2,"s390x":2},"certificates":[],"configNamespace":"istio-system","configValidation":true,"controlPlaneSecurityEnabled":true,"defaultNodeSelector":{},"defaultPodDisruptionBudget":{"enabled":true},"defaultResources":{"requests":{"cpu":"10m"}},"disablePolicyChecks":true,"enableHelmTest":false,"enableTracing":false,"enabled":true,"hub":"docker.io/istio","imagePullPolicy":"IfNotPresent","imagePullSecrets":[],"istioNamespace":"istio-system","k8sIngress":{"enableHttps":false,"enabled":false,"gatewayName":"ingressgateway"},"localityLbSetting":{"enabled":true},"logAsJson":true,"logging":{"level":"default:warn"},"meshExpansion":{"enabled":false,"useILB":false},"meshNetworks":{},"mtls":{"auto":false,"enabled":false},"multiCluster":{"clusterName":"","enabled":false},"namespace":"istio-system","network":"","omitSidecarInjectorConfigMap":false,"oneNamespace":false,"operatorManageWebhooks":false,"outboundTrafficPolicy":{"mode":"ALLOW_ANY"},"policyCheckFailOpen":false,"policyNamespace":"istio-system","priorityClassName":"","prometheusNamespace":"istio-system","proxy":{"accessLogEncoding":"JSON","accessLogFile":"","accessLogFormat":"","autoInject":"disabled","clusterDomain":"cluster.local","componentLogLevel":"misc:error","concurrency":2,"dnsRefreshRate":"300s","enableCoreDump":false,"envoyAccessLogService":{"enabled":false},"envoyMetricsService":{"enabled":false,"tcpKeepalive":{"interval":"10s","probes":3,"time":"10s"},"tlsSettings":{"mode":"DISABLE","subjectAltNames":[]}},"envoyStatsd":{"enabled":false},"excludeIPRanges":"","excludeInboundPorts":"","excludeOutboundPorts":"","image":"proxyv2","includeIPRanges":"10.33.0.0/16,10.32.128.0/20","includeInboundPorts":"*","kubevirtInterfaces":"","logLevel":"warning","privileged":false,"protocolDetectionTimeout":"100ms","readinessFailureThreshold":30,"readinessInitialDelaySeconds":1,"readinessPeriodSeconds":2,"resources":{"limits":{"cpu":"500m","memory":"512Mi"},"requests":{"cpu":"100m","memory":"128Mi"}},"statusPort":15020,"tracer":"zipkin"},"proxy_init":{"image":"proxyv2","resources":{"limits":{"cpu":"100m","memory":"50Mi"},"requests":{"cpu":"10m","memory":"10Mi"}}},"sds":{"enabled":false,"token":{"aud":"istio-ca"},"udsPath":""},"securityNamespace":"istio-system","tag":"1.4.6","telemetryNamespace":"istio-system","tracer":{"datadog":{"address":"$(HOST_IP):8126"},"lightstep":{"accessToken":"","address":"","cacertPath":"","secure":true},"zipkin":{"address":""}},"trustDomain":"cluster.local","useMCP":false},"grafana":{"accessMode":"ReadWriteMany","contextPath":"/grafana","dashboardProviders":{"dashboardproviders.yaml":{"apiVersion":1,"providers":[{"disableDeletion":false,"folder":"istio","name":"istio","options":{"path":"/var/lib/grafana/dashboards/istio"},"orgId":1,"type":"file"}]}},"datasources":{"datasources.yaml":{"apiVersion":1}},"enabled":false,"env":{},"envSec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rIP"},"zipkin":{"hub":"docker.io/openzipkin","javaOptsHeap":700,"maxSpans":500000,"node":{"cpus":2},"probeStartupDelay":200,"queryPort":9411,"resources":{"limits":{"cpu":"300m","memory":"900Mi"},"requests":{"cpu":"150m","memory":"900Mi"}},"tag":"2.14.2"}},"version":""}'
kind: ConfigMap
metadata:
annotations:
labels:
app: sidecar-injector
istio: sidecar-injector
operator.istio.io/component: Injector
operator.istio.io/managed: Reconcile
operator.istio.io/version: 1.4.6
release: istio
name: cm-test-toshi

2. 应用补丁

$ kubectl patch configmap/cm-test-toshi --type merge -p '{
"data":{
"config":{
"template":{
"containers":[{
"name":"istio-proxy",
"lifecycle":{
"preStop":{
"exec":{
"command":["/bin/sh", "-c", "while [ $(netstat -plunt | grep tcp | grep -v envoy | wc -l | xargs) -ne 0]; do sleep 1; done"]
}
}
}
}]
}
}
}
}'

还有什么我们需要知道的吗？：

环境：

• Kubernetes版本(使用kubectl版本(：v1.14.10调度器
• 云提供商或硬件配置：v1.14.10-gke.17

Answer 1

根据kubernetes文档：

kubectl补丁命令的替代形式

kubectl patch命令采用YAML或JSON。它可以将补丁作为一个文件，也可以直接在命令行上使用。

创建一个名为patch-file.json的文件，其中包含以下内容：

{
"spec": {
"template": {
"spec": {
"containers": [
{
"name": "patch-demo-ctr-2",
"image": "redis"
}
]
}
}
}
}

以下命令是等效的：

kubectl patch deployment patch-demo --patch "$(cat patch-file.yaml)"
kubectl patch deployment patch-demo --patch 'spec:n template:n  spec:n   containers:n   - name: patch-demo-ctr-2n     image: redis'
kubectl patch deployment patch-demo --patch "$(cat patch-file.json)"
kubectl patch deployment patch-demo --patch '{"spec": {"template": {"spec": {"containers": [{"name": "patch-demo-ctr-2","image": "redis"}]}}}}'

不支持您尝试使用的方法。

因此，您可以使用gsed来流式传输您提到的数据。或者转换为文档中建议的模板。或者将数据放入一个文件中，并像上面的示例一样cat。

希望能有所帮助。

Answer 2

每个分号后面都需要一个空白字符。

换句话说。。每个"｛"字符之前应该有一个空白字符

这也是你的错误信息所说的。