我们有一个使用基于Java的HTTP服务器的pod。 HTTP POST请求从JMeter发送到服务器。我们目前正在通过增加副本数来测量此http服务器的横向扩展百分比。此处附带的是部署yaml，它配置为使用nodePort和hostPort公开服务。
我们的测试显示nodePort横向扩展百分比为57，而hostPort横向扩展百分比为〜95。
我们想知道为什么这种行为上的差异以及如何调整nodePort以获得与hostPort相同的横向扩展百分比。
以下是测试详细信息：
K8S版本： v1.9.6，
系统详细信息：：1个主服务器，3个工作器，1个NFS服务器
操作系统：CentOS Linux版本7.3
系统资源：16个GiB RAM（在每个K8S节点中），12个CPU（在每个K8S中） 节点），1 TB的存储空间。
apiVersion: v1
kind: Service
metadata:
name: itom-di-receiver-svc
namespace: opsbridge1
spec:
type: NodePort
ports:
- name: receiver-port
nodePort: 30001
port: 8443
protocol: TCP
targetPort: 5050
selector:
app: itom-di-receiver
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: itom-di-receiver-dpl
namespace: opsbridge1
annotations:
deployment.microfocus.com/default-replica-count: "1"
deployment.microfocus.com/runlevel: UP
spec:
replicas: 1
template:
metadata:
labels:
app: itom-di-receiver
annotations:
pod.boostport.com/vault-approle: opsbridge1-di
pod.boostport.com/vault-init-container: install
spec:
containers:
- name: itom-di-receiver-cnt
image: localhost:5000/hpeswitomsandbox/itom-data-ingestion-receiver:1.3.0-029
livenessProbe:
exec:
command:
- cat
- /receiver/receiver-status.txt
initialDelaySeconds: 180
periodSeconds: 20
readinessProbe:
exec:
command:
- "/receiver/bin/readiness.sh"
initialDelaySeconds: 30
periodSeconds: 20
failureThreshold: 18
securityContext:
capabilities:
drop:
- all
add:
- CHOWN
- SETGID
- SETUID
imagePullPolicy: IfNotPresent
env:
- name: gid
value: "1999"
- name: uid
value: "1999"
- name: KAFKA_SECURITY_PROTOCOL
value: "SSL"
- name: KAFKA_HOSTNAME
valueFrom:
configMapKeyRef:
name: itom-di-kafka-cm
key: kafka.advertised.host.name
- name: KAFKA_PORT
valueFrom:
configMapKeyRef:
name: itom-di-kafka-cm
key: kafka.advertised.port
- name: KAFKA_DEFAULT_TOPIC
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: kafka.default.topic
- name: KAFKA_MAP_CONTEXT_TO_TOPIC
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: kafka.map.context.to.topic
- name: RECEIVER_KAFKA_TLS_ENABLE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.tls.enable
- name: RECEIVER_JVM_ARGS
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.jvm.args
### Receiver Performance Tuning Environment Variables ###
- name: RECEIVER_COMPUTE_THREADS
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.compute.threads
- name: KAFKA_PRODUCER_BATCH_SIZE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.batch.size.kb
- name: RECEIVER_REQUEST_BODY_MAXSIZE_MB
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.request.body.maxsize.mb
- name: KAFKA_PRODUCER_LINGER_MS
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.linger.ms
- name: KAFKA_PRODUCER_ACKS
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.acks
- name: KAFKA_PRODUCER_COMPRESSION_TYPE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.compression.type
- name: KAFKA_PRODUCER_BUFFER_MEMORY
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.buffer.memory.mb
- name: KAFKA_PRODUCER_MAX_BLOCK_MS
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.max.block.ms
- name: RECEIVER_HEADER_FIELDNAME_FOR_TOPIC
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.header.fieldname.for.topic
- name: RECEIVER_HEADER_FIELDNAME_FOR_TOPIC_KEY
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.header.fieldname.for.topic.key
- name: RECEIVER_TOPIC_FROM_HEADER
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.topic.from.header
- name: KAFKA_PRODUCER_RETRIES
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.retries
- name: KAFKA_PRODUCER_MAX_IN_FLIGHT_REQUEST_PER_CONNECTION
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.kafka.producer.max.in.flight.requests.per.connection
### Security Environment Variables ###
- name: RECEIVER_PROTOCOL
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.protocol
- name: RECEIVER_AUTH_METHOD
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.auth.method
- name: RECEIVER_KEYSTORE_TYPE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.keystore.type
- name: RECEIVER_TRUSTSTORE_TYPE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.truststore.type
- name: RECEIVER_EXTERNAL_JAR_ENABLE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.external.jar.enable
- name: RECEIVER_JAR_VALIDATE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.jar.validate
- name: CERTIFICATE_REVOCATION
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.cert.revocation.enable
- name: CRL_FILE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.cert.revocation.crlfile.enable
- name: PREFER_OCSP
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.cert.revocation.ocsp.enable
- name: ENABLE_SOFT_FAIL
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.cert.revocation.softfail.enable
- name: PREFER_CRL
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.cert.revocation.preferCRL.enable
- name: RESPONDER_URL
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: ocsp.responderURL
- name: CERT_SUBJECT_NAME
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: ocsp.responderCertSubjectName
- name: CERT_ISSUER_NAME
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: ocsp.responderCertIssuerName
- name: CERT_SERIAL_NUMBER
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: ocsp.responderCertSerialNumber
- name: RECEIVER_FIPS_ENABLE
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.fips.enable
- name: RECEIVER_APIKEY_REFRESH_INTERVAL_MINS
valueFrom:
configMapKeyRef:
name: itom-di-receiver-cm
key: receiver.apikey.refresh.interval.mins
ports:
- containerPort: 5050
hostPort: 5051
resources:
limits:
cpu: "4"
memory: "2048Mi"
requests:
cpu: "1"
memory: "1024Mi"
volumeMounts:
- name: di-receiver-volume
mountPath: /receiver/conf
subPath: di/receiver/conf
- name: di-receiver-volume
mountPath: /receiver/conf/endpoint
subPath: di/receiver/conf/endpoint
- name: di-receiver-volume
mountPath: /receiver/conf/schema
subPath: di/receiver/conf/schema
- name: di-receiver-volume
mountPath: /receiver/conf/crl
subPath: di/receiver/conf/crl
- name: di-receiver-log-volume
mountPath: /receiver/log
subPath: di/receiver/log
- name: di-receiver-volume
mountPath: /receiver/ext
subPath: di/receiver/ext
- name: di-receiver-volume
mountPath: /receiver/data
subPath: di/receiver/data
- name: di-receiver-volume
mountPath: /receiver/samples
subPath: di/receiver/samples
- name: vault-token
mountPath: /var/run/secrets/boostport.com
- name: secret-volume
mountPath: /receiver/ssl/ca
- name: secret-volume-kafka
mountPath: /receiver/ssl/store/receiver-kafka
- name: kubernetes-vault-renew
image: localhost:5000/kubernetes-vault-renew:0.5.0
imagePullPolicy: IfNotPresent
volumeMounts:
- name: vault-token
mountPath: /var/run/secrets/boostport.com
initContainers:
- env:
- name: VAULT_ROLE_ID
value: "66d8c1aa-6079-a65f-38c3-89bd7a6fdd2c"
- name: CERT_COMMON_NAME
value: "smperfqa31.hpeswlab.net"
image: localhost:5000/kubernetes-vault-init:0.5.0
imagePullPolicy: IfNotPresent
name: install
resources: {}
securityContext:
runAsUser: 1999
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /var/run/secrets/boostport.com
name: vault-token
- name: itom-di-init-receiver-cnt
image: localhost:5000/hpeswitomsandbox/itom-data-ingestion-receiver:1.3.0-029
command: ["/receiver/bin/run.sh","dependency"]
env:
- name: KAFKA_HOSTNAME
valueFrom:
configMapKeyRef:
name: itom-di-kafka-cm
key: kafka.advertised.host.name
volumes:
- name: di-receiver-volume
persistentVolumeClaim:
claimName: conf-volume
- name: di-receiver-log-volume
persistentVolumeClaim:
claimName: log-volume
- name: vault-token
emptyDir: {}
- name: secret-volume
secret:
secretName: receiver-secret
- name: secret-volume-kafka
secret:
secretName: receiver-kafka-secret