https://github.com/wangzheng422/docker_env/blob/master/redhat/ocp4/4.3/4.3.QoS.nic.high.md
https://docs.openshift.com/container-platform/4.3/nodes/pods/nodes-pods-configuring.html
video
# 查看infra0, infra1上面的端口速度，可以看到是10GE的网口
ethtool em1
# Settings for em1:
# Supported ports: [ FIBRE ]
# Supported link modes: 1000baseT/Full
# 10000baseT/Full
# Supported pause frame use: Symmetric Receive-only
# Supports auto-negotiation: No
# Supported FEC modes: Not reported
# Advertised link modes: 10000baseT/Full
# Advertised pause frame use: No
# Advertised auto-negotiation: No
# Advertised FEC modes: Not reported
# Speed: 10000Mb/s
# Duplex: Full
# Port: FIBRE
# PHYAD: 1
# Transceiver: internal
# Auto-negotiation: off
# Supports Wake-on: g
# Wake-on: d
# Current message level: 0x00000000 (0)
# Link detected: yes
# 创建2个服务端Pod，用iperf3作为服务端，服务端不限速。再创建一个客户端Pod，有iperf3作为客户端。
cat << EOF > demo.yaml
---
kind: Pod
apiVersion: v1
metadata:
name: demo-pod1
namespace: demo
spec:
nodeSelector:
kubernetes.io/hostname: ‘infra1.hsc.redhat.ren‘
restartPolicy: Always
containers:
- name: demo1
image: >-
registry.redhat.ren:5443/docker.io/wangzheng422/centos:centos7-test
env:
- name: key
value: value
command: ["iperf3", "-s", "-p" ]
args: [ "6666" ]
imagePullPolicy: Always
---
kind: Pod
apiVersion: v1
metadata:
name: demo-pod2
namespace: default
spec:
nodeSelector:
kubernetes.io/hostname: ‘infra1.hsc.redhat.ren‘
restartPolicy: Always
containers:
- name: demo1
image: >-
registry.redhat.ren:5443/docker.io/wangzheng422/centos:centos7-test
env:
- name: key
value: value
command: ["iperf3", "-s", "-p" ]
args: [ "6666" ]
imagePullPolicy: Always
---
kind: Pod
apiVersion: v1
metadata:
name: iperf
namespace: zte
spec:
nodeSelector:
kubernetes.io/hostname: ‘infra0.hsc.redhat.ren‘
restartPolicy: Always
containers:
- name: iperf
image: >-
registry.redhat.ren:5443/docker.io/wangzheng422/centos:centos7-test
env:
- name: key
value: value
command: ["/bin/bash", "-c", "--" ]
args: [ "trap : TERM INT; sleep infinity & wait" ]
imagePullPolicy: Always
EOF
oc apply -f demo.yaml
# 查找服务端pod ip
oc get pod -A -o wide | grep demo-pod
oc get pod -n zte -o wide
pod_demo1_ip=$(oc get pod -n demo demo-pod1 -o json | jq -r ‘.status.podIPs[0].ip‘)
pod_demo2_ip=$(oc get pod -n default demo-pod2 -o json | jq -r ‘.status.podIPs[0].ip‘)
echo $pod_demo1_ip
echo $pod_demo2_ip
# 进入客户端，对两个服务端pod进行测速
/bin/rm -f nohup.out
nohup oc exec -n zte -it iperf -- iperf3 -T demo1 -i 10 -t 30 -b 3G -P 6 -p 6666 -c $pod_demo1_ip 2>&1 &
nohup oc exec -n zte -it iperf -- iperf3 -T demo2 -i 10 -t 30 -b 6G -P 6 -p 6666 -c $pod_demo2_ip 2>&1 &
tail -f nohup.out
# 调整流量重新测试，对两个服务端pod进行测速
/bin/rm -f nohup.out
nohup oc exec -n zte -it iperf -- iperf3 -T demo1 -i 10 -t 30 -b 6G -P 6 -p 6666 -c $pod_demo1_ip 2>&1 &
nohup oc exec -n zte -it iperf -- iperf3 -T demo2 -i 10 -t 30 -b 6G -P 6 -p 6666 -c $pod_demo2_ip 2>&1 &
tail -f nohup.out
# 调整流量重新测试，对两个服务端pod进行测速
/bin/rm -f nohup.out
nohup oc exec -n zte -it iperf -- iperf3 -T demo1 -i 10 -t 30 -b 8G -P 6 -p 6666 -c $pod_demo1_ip 2>&1 &
nohup oc exec -n zte -it iperf -- iperf3 -T demo2 -i 10 -t 30 -b 6G -P 6 -p 6666 -c $pod_demo2_ip 2>&1 &
tail -f nohup.out
# 查看服务端pod的日志，可以看到流量信息
# 更改服务端带宽为6G
oc delete pod -n demo demo-pod1
cat << EOF > demo1.yaml
---
kind: Pod
apiVersion: v1
metadata:
name: demo-pod1
namespace: demo
annotations:
kubernetes.io/ingress-bandwidth: 6G
kubernetes.io/egress-bandwidth: 6G
spec:
nodeSelector:
kubernetes.io/hostname: ‘infra1.hsc.redhat.ren‘
restartPolicy: Always
containers:
- name: demo1
image: >-
registry.redhat.ren:5443/docker.io/wangzheng422/centos:centos7-test
env:
- name: key
value: value
command: ["iperf3", "-s", "-p" ]
args: [ "6666" ]
imagePullPolicy: Always
EOF
oc apply -n demo -f demo1.yaml
# 查找服务端pod ip
oc get pod -A -o wide | grep demo-pod
oc get pod -n zte -o wide
pod_demo1_ip=$(oc get pod -n demo demo-pod1 -o json | jq -r ‘.status.podIPs[0].ip‘)
pod_demo2_ip=$(oc get pod -n default demo-pod2 -o json | jq -r ‘.status.podIPs[0].ip‘)
echo $pod_demo1_ip
echo $pod_demo2_ip
# 调整流量重新测试，对两个服务端pod进行测速
/bin/rm -f nohup.out
nohup oc exec -n zte -it iperf -- iperf3 -T demo1 -i 10 -t 30 -b 8G -P 6 -p 6666 -c $pod_demo1_ip 2>&1 &
nohup oc exec -n zte -it iperf -- iperf3 -T demo2 -i 10 -t 30 -b 6G -P 6 -p 6666 -c $pod_demo2_ip 2>&1 &
tail -f nohup.out
# 查看服务端pod的日志，可以看到流量信息
# 更改服务端带宽为3G
oc delete pod -n demo demo-pod1
cat << EOF > demo1.yaml
---
kind: Pod
apiVersion: v1
metadata:
name: demo-pod1
namespace: demo
annotations:
kubernetes.io/ingress-bandwidth: 3G
kubernetes.io/egress-bandwidth: 3G
spec:
nodeSelector:
kubernetes.io/hostname: ‘infra1.hsc.redhat.ren‘
restartPolicy: Always
containers:
- name: demo1
image: >-
registry.redhat.ren:5443/docker.io/wangzheng422/centos:centos7-test
env:
- name: key
value: value
command: ["iperf3", "-s", "-p" ]
args: [ "6666" ]
imagePullPolicy: Always
EOF
oc apply -n demo -f demo1.yaml
# 查找服务端pod ip
oc get pod -A -o wide | grep demo-pod
oc get pod -n zte -o wide
pod_demo1_ip=$(oc get pod -n demo demo-pod1 -o json | jq -r ‘.status.podIPs[0].ip‘)
pod_demo2_ip=$(oc get pod -n default demo-pod2 -o json | jq -r ‘.status.podIPs[0].ip‘)
echo $pod_demo1_ip
echo $pod_demo2_ip
# 调整流量重新测试，对两个服务端pod进行测速
/bin/rm -f nohup.out
nohup oc exec -n zte -it iperf -- iperf3 -T demo1 -i 10 -t 30 -b 8G -P 6 -p 6666 -c $pod_demo1_ip 2>&1 &
nohup oc exec -n zte -it iperf -- iperf3 -T demo2 -i 10 -t 30 -b 6G -P 6 -p 6666 -c $pod_demo2_ip 2>&1 &
tail -f nohup.out
# 查看服务端pod的日志，可以看到流量信息
oc delete -f demo.yaml
原文：https://www.cnblogs.com/wandering-star/p/12764589.html