kubernetes 性能与监控
部署metrics-server
开启apiserver聚合服务
[root@master ~
]
- --enable
-aggregator
-routing=true
[root@master ~
]
[root@master ~
]
- --enable
-aggregator
-routing=true
证书的申请与签发
要在所有节点执行(master,node-0001,node-0002,node-0003)
申请的多余证书可以使用 (kubectl delete certificatesigningrequests 证书名称) 删除
[root@node
-0001 ~
]
serverTLSBootstrap: true
[root@node
-0001 ~
]
[root@master ~
]
NAME AGE REQUESTOR CONDITION
csr
-wsfz7 8s system
:node
:master Pending
[root@master ~
]
[root@master ~
]
NAME AGE REQUESTOR CONDITION
csr
-wsfz7 86s system
:node
:master Approved
,Issued
安装mertics插件
拷贝 云盘的kubernetes/v1.17.6/mertics 目录到 master 上
[root@master metrics
]
[root@master metrics
]
[root@master metrics
]
[root@master metrics
]
29: image
: 192.168.1.100
:5000/metrics
-server
:master
[root@master metrics
]
[root@master metrics
]
[root@master metrics
]
[root@master metrics
]
[root@master metrics
]
[root@master metrics
]
NAME READY STATUS RESTARTS AGE
metrics
-server
-78dfb54777
-4dcjl 1/1 Running 0 116s
[root@master metrics
]
NAME SERVICE AVAILABLE AGE
v1beta1.metrics.k8s.io kube
-system/metrics
-server True 2m20s
[root@master metrics
]
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
master 95m 4% 840Mi 48%
node
-0001 24m 1% 266Mi 15%
node
-0002 24m 1% 270Mi 15%
node
-0003 26m 1% 280Mi 16%
部署Dashboard
拷贝 云盘的kubernetes/v1.17.6/dashboard 目录到 master 上
上传镜像到私有仓库
[root@master dashboard
]
[root@master dashboard
]
[root@master dashboard
]
[root@master dashboard
]
[root@master dashboard
]
[root@master dashboard
]
安装dashboard
[root@master dashboard
]
nodePort: 30090
type: NodePort
image: 192.168.1.100
:5000/dashboard
:v2.0.0
image: 192.168.1.100
:5000/metrics
-scraper
:v1.0.4
[root@master dashboard
]
[root@master dashboard
]
NAME READY STATUS RESTARTS AGE
dashboard
-metrics
-scraper
-57bf85fcc9
-vsz74 1/1 Running 0 52s
kubernetes
-dashboard
-7b7f78bcf9
-5k8vq 1/1 Running 0 52s
[root@master dashboard
]
NAME TYPE CLUSTER
-IP EXTERNAL
-IP PORT(S)
dashboard
-metrics
-scraper ClusterIP 10.254.76.85 <none
> 8000/TCP
kubernetes
-dashboard NodePort 10.254.211.125 <none
> 443
:30090/TCP
在华为云上为 node 节点绑定弹性公网IP [ https://弹性公网IP:30090/ ]
token认证登录
[root@master dashboard
]
[root@master ~
]
NAME TYPE DATA AGE
admin-user-token-bxjlz kubernetes.io/service-account-token 3 23s
[root@master ~
]
Name: admin-user-token-bxjlz
...
...
ca.crt: 1025 bytes
namespace: 20 bytes
token: 这里这个很长的字符串就是你要找的认证 token
使用获取的 token 登录,通过 web 页面访问即可
部署Prometheus
导入镜像
kubernetes/v1.17.6/prometheus/images/ 下所有镜像导入到私有仓库
拷贝所有镜像到 master 的 images 目录下
[root@master images
]
[root@master images
]
quay.io/coreos/prometheus-config-reloader v0.35.1
quay.io/coreos/prometheus-operator v0.35.1
quay.io/coreos/kube-state-metrics v1.9.2
grafana/grafana 6.4.3
jimmidyson/configmap-reload v0.3.0
quay.io/prometheus/prometheus v2.11.0
quay.io/prometheus/alertmanager v0.18.0
quay.io/coreos/k8s-prometheus-adapter-amd64 v0.5.0
quay.io/coreos/kube-rbac-proxy v0.4.1
"
[root@master images]# while read _f _v;do
docker tag ${_f}:${_v} 192.168.1.100:5000/${_f##*/}:${_v}
docker push 192.168.1.100:5000/${_f##*/}:${_v}
docker rmi ${_f}:${_v}
done <<<"${img}"
[root@master images]# curl http://192.168.1.100:5000/v2/_catalog
{"repositories
":["alertmanager
","configmap-reload
","coredns
","dashboard
","etcd
","flannel
","grafana
","k8s-prometheus-adapter-amd64
","kube-apiserver
","kube-controller-manager
","kube-proxy
","kube-rbac-proxy
","kube-scheduler
","kube-state-metrics
","metrics-scraper
","metrics-server
","myos
","nginx-ingress-controller
","node-exporter
","pause
","prometheus
","prometheus-config-reloader
","prometheus-operator"
]}
operator安装
拷贝prometheus/setup 目录到 master 下
[root@master prometheus
]
{"name"
:"configmap-reload","tags"
:["v0.3.0"]}
[root@master prometheus
]
{"name"
:"prometheus-config-reloader","tags"
:["v0.35.1"]}
[root@master prometheus
]
{"name"
:"prometheus-operator","tags"
:["v0.35.1"]}
[root@master prometheus
]
27: - --config
-reloader
-image=192.168.1.100
:5000/configmap
-reload
:v0.3.0
28: - --prometheus
-config
-reloader=192.168.1.100
:5000/prometheus
-config
-reloader
:v0.35.1
29: image: 192.168.1.100
:5000/prometheus
-operator
:v0.35.1
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
prometheus
-operator
-75b4b59b74
-72qhg 1/1 Running 0 47s
prom-adapter安装
拷贝 prometheus/prom-adapter 目录到 master 下
[root@master prometheus
]
{"name"
:"k8s-prometheus-adapter-amd64","tags"
:["v0.5.0"]}
[root@master prometheus
]
28: image: 192.168.1.100
:5000/k8s
-prometheus
-adapter
-amd64
:v0.5.0
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
prometheus
-adapter
-856854f9f6
-knqtq 1/1 Running 0 6s
metrics-state安装
拷贝 prometheus/metrics-state 目录到 master 下
[root@master prometheus
]
{"name"
:"kube-state-metrics","tags"
:["v1.9.2"]}
[root@master prometheus
]
{"name"
:"kube-rbac-proxy","tags"
:["v0.4.1"]}
[root@master prometheus
]
24: image: 192.168.1.100
:5000/kube
-rbac
-proxy
:v0.4.1
41: image: 192.168.1.100
:5000/kube
-rbac
-proxy
:v0.4.1
58: image: 192.168.1.100
:5000/kube
-state
-metrics
:v1.9.2
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
kube
-state
-metrics
-5894f64799
-krvn6 3/3 Running 0 4s
node-exporter安装
拷贝 prometheus/node-exporter 目录到 master 下
[root@master prometheus
]
{"name"
:"node-exporter","tags"
:["v1.0.0"]}
[root@master prometheus
]
{"name"
:"kube-rbac-proxy","tags"
:["v0.4.1"]}
[root@master prometheus
]
27: image: 192.168.1.100
:5000/node
-exporter
:v1.0.0
57: image: 192.168.1.100
:5000/kube
-rbac
-proxy
:v0.4.1
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
node
-exporter
-7h4l9 2/2 Running 0 7s
node
-exporter
-7vxmx 2/2 Running 0 7s
node
-exporter
-mr6lw 2/2 Running 0 7s
node
-exporter
-zg2j8 2/2 Running 0 7s
Prometheus server安装
拷贝 prometheus/prom-server 目录到 master 下
[root@master prometheus
]
{"name"
:"prometheus","tags"
:["v2.11.0"]}
[root@master prometheus
]
14: baseImage: 192.168.1.100
:5000/prometheus
34: version: v2.11.0
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
prometheus
-k8s
-0 3/3 Running 1 45s
prometheus
-k8s
-1 3/3 Running 1 45s
alertmanager安装
拷贝 prometheus/alertmanager 目录到 master 下
[root@master prometheus
]
{"name"
:"alertmanager","tags"
:["v0.18.0"]}
[root@master prometheus
]
09: baseImage: 192.168.1.100
:5000/alertmanager
18: version: v0.18.0
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
alertmanager
-main
-0 2/2 Running 0 16s
alertmanager
-main
-1 2/2 Running 0 16s
alertmanager
-main
-2 2/2 Running 0 16s
grafana安装
拷贝 prometheus/grafana 目录到 master 下
[root@master prometheus
]
{"name"
:"grafana","tags"
:["6.4.3"]}
[root@master prometheus
]
19: - image: 192.168.1.100
:5000/grafana
:6.4.3
[root@master prometheus
]
[root@master prometheus
]
NAME READY STATUS RESTARTS AGE
grafana
-647d948b69
-d2hv9 1/1 Running 0 19s
发布prometheus服务
1、prometheus服务
[root@master prometheus
]
[root@master prometheus
]
apiVersion: v1
kind: Service
metadata:
labels:
prometheus: k8s
name: prometheus
-k8s
namespace: monitoring
spec:
type: NodePort
ports:
- name: web
port: 9090
nodePort: 30001
targetPort: web
selector:
app: prometheus
prometheus: k8s
sessionAffinity: ClientIP
[root@master prometheus
]
[root@master prometheus
]
NAME TYPE CLUSTER
-IP EXTERNAL
-IP PORT(S)
prometheus
-k8s NodePort 10.254.111.220 <none
> 9090
:30001/TCP
2、grafana服务
[root@master prometheus
]
[root@master prometheus
]
apiVersion: v1
kind: Service
metadata:
labels:
app: grafana
name: grafana
namespace: monitoring
spec:
type: NodePort
ports:
- name: http
port: 3000
nodePort: 30002
targetPort: http
selector:
app: grafana
[root@master prometheus
]
[root@master prometheus
]
NAME TYPE CLUSTER
-IP EXTERNAL
-IP PORT(S)
grafana NodePort 10.254.79.49 <none
> 3000
:30002/TCP
服务发布以后可以通过华为云弹性公网IP直接访问即可
grafana 第一次默认登录的用户名/密码(admin/admin)
HPA集群
集群图例
#mermaid-svg-MJIJDcASTl1s5Kb8 .label{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);fill:#333;color:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .label text{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .node rect,#mermaid-svg-MJIJDcASTl1s5Kb8 .node circle,#mermaid-svg-MJIJDcASTl1s5Kb8 .node ellipse,#mermaid-svg-MJIJDcASTl1s5Kb8 .node polygon,#mermaid-svg-MJIJDcASTl1s5Kb8 .node path{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-MJIJDcASTl1s5Kb8 .node .label{text-align:center;fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .node.clickable{cursor:pointer}#mermaid-svg-MJIJDcASTl1s5Kb8 .arrowheadPath{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .edgePath .path{stroke:#333;stroke-width:1.5px}#mermaid-svg-MJIJDcASTl1s5Kb8 .flowchart-link{stroke:#333;fill:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .edgeLabel{background-color:#e8e8e8;text-align:center}#mermaid-svg-MJIJDcASTl1s5Kb8 .edgeLabel rect{opacity:0.9}#mermaid-svg-MJIJDcASTl1s5Kb8 .edgeLabel span{color:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .cluster rect{fill:#ffffde;stroke:#aa3;stroke-width:1px}#mermaid-svg-MJIJDcASTl1s5Kb8 .cluster text{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 div.mermaidTooltip{position:absolute;text-align:center;max-width:200px;padding:2px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:12px;background:#ffffde;border:1px solid #aa3;border-radius:2px;pointer-events:none;z-index:100}#mermaid-svg-MJIJDcASTl1s5Kb8 .actor{stroke:#ccf;fill:#ECECFF}#mermaid-svg-MJIJDcASTl1s5Kb8 text.actor>tspan{fill:#000;stroke:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .actor-line{stroke:grey}#mermaid-svg-MJIJDcASTl1s5Kb8 .messageLine0{stroke-width:1.5;stroke-dasharray:none;stroke:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .messageLine1{stroke-width:1.5;stroke-dasharray:2, 2;stroke:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 #arrowhead path{fill:#333;stroke:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .sequenceNumber{fill:#fff}#mermaid-svg-MJIJDcASTl1s5Kb8 #sequencenumber{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 #crosshead path{fill:#333;stroke:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .messageText{fill:#333;stroke:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .labelBox{stroke:#ccf;fill:#ECECFF}#mermaid-svg-MJIJDcASTl1s5Kb8 .labelText,#mermaid-svg-MJIJDcASTl1s5Kb8 .labelText>tspan{fill:#000;stroke:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .loopText,#mermaid-svg-MJIJDcASTl1s5Kb8 .loopText>tspan{fill:#000;stroke:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .loopLine{stroke-width:2px;stroke-dasharray:2, 2;stroke:#ccf;fill:#ccf}#mermaid-svg-MJIJDcASTl1s5Kb8 .note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-MJIJDcASTl1s5Kb8 .noteText,#mermaid-svg-MJIJDcASTl1s5Kb8 .noteText>tspan{fill:#000;stroke:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .activation0{fill:#f4f4f4;stroke:#666}#mermaid-svg-MJIJDcASTl1s5Kb8 .activation1{fill:#f4f4f4;stroke:#666}#mermaid-svg-MJIJDcASTl1s5Kb8 .activation2{fill:#f4f4f4;stroke:#666}#mermaid-svg-MJIJDcASTl1s5Kb8 .mermaid-main-font{font-family:"trebuchet ms", verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .section{stroke:none;opacity:0.2}#mermaid-svg-MJIJDcASTl1s5Kb8 .section0{fill:rgba(102,102,255,0.49)}#mermaid-svg-MJIJDcASTl1s5Kb8 .section2{fill:#fff400}#mermaid-svg-MJIJDcASTl1s5Kb8 .section1,#mermaid-svg-MJIJDcASTl1s5Kb8 .section3{fill:#fff;opacity:0.2}#mermaid-svg-MJIJDcASTl1s5Kb8 .sectionTitle0{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .sectionTitle1{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .sectionTitle2{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .sectionTitle3{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .sectionTitle{text-anchor:start;font-size:11px;text-height:14px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .grid .tick{stroke:#d3d3d3;opacity:0.8;shape-rendering:crispEdges}#mermaid-svg-MJIJDcASTl1s5Kb8 .grid .tick text{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .grid path{stroke-width:0}#mermaid-svg-MJIJDcASTl1s5Kb8 .today{fill:none;stroke:red;stroke-width:2px}#mermaid-svg-MJIJDcASTl1s5Kb8 .task{stroke-width:2}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText{text-anchor:middle;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText:not([font-size]){font-size:11px}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutsideRight{fill:#000;text-anchor:start;font-size:11px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutsideLeft{fill:#000;text-anchor:end;font-size:11px}#mermaid-svg-MJIJDcASTl1s5Kb8 .task.clickable{cursor:pointer}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutsideLeft.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutsideRight.clickable{cursor:pointer;fill:#003163 !important;font-weight:bold}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText0,#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText1,#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText2,#mermaid-svg-MJIJDcASTl1s5Kb8 .taskText3{fill:#fff}#mermaid-svg-MJIJDcASTl1s5Kb8 .task0,#mermaid-svg-MJIJDcASTl1s5Kb8 .task1,#mermaid-svg-MJIJDcASTl1s5Kb8 .task2,#mermaid-svg-MJIJDcASTl1s5Kb8 .task3{fill:#8a90dd;stroke:#534fbc}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutside0,#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutside2{fill:#000}#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutside1,#mermaid-svg-MJIJDcASTl1s5Kb8 .taskTextOutside3{fill:#000}#mermaid-svg-MJIJDcASTl1s5Kb8 .active0,#mermaid-svg-MJIJDcASTl1s5Kb8 .active1,#mermaid-svg-MJIJDcASTl1s5Kb8 .active2,#mermaid-svg-MJIJDcASTl1s5Kb8 .active3{fill:#bfc7ff;stroke:#534fbc}#mermaid-svg-MJIJDcASTl1s5Kb8 .activeText0,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeText1,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeText2,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeText3{fill:#000 !important}#mermaid-svg-MJIJDcASTl1s5Kb8 .done0,#mermaid-svg-MJIJDcASTl1s5Kb8 .done1,#mermaid-svg-MJIJDcASTl1s5Kb8 .done2,#mermaid-svg-MJIJDcASTl1s5Kb8 .done3{stroke:grey;fill:#d3d3d3;stroke-width:2}#mermaid-svg-MJIJDcASTl1s5Kb8 .doneText0,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneText1,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneText2,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneText3{fill:#000 !important}#mermaid-svg-MJIJDcASTl1s5Kb8 .crit0,#mermaid-svg-MJIJDcASTl1s5Kb8 .crit1,#mermaid-svg-MJIJDcASTl1s5Kb8 .crit2,#mermaid-svg-MJIJDcASTl1s5Kb8 .crit3{stroke:#f88;fill:red;stroke-width:2}#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCrit0,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCrit1,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCrit2,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCrit3{stroke:#f88;fill:#bfc7ff;stroke-width:2}#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCrit0,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCrit1,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCrit2,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCrit3{stroke:#f88;fill:#d3d3d3;stroke-width:2;cursor:pointer;shape-rendering:crispEdges}#mermaid-svg-MJIJDcASTl1s5Kb8 .milestone{transform:rotate(45deg) scale(0.8, 0.8)}#mermaid-svg-MJIJDcASTl1s5Kb8 .milestoneText{font-style:italic}#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCritText0,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCritText1,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCritText2,#mermaid-svg-MJIJDcASTl1s5Kb8 .doneCritText3{fill:#000 !important}#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCritText0,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCritText1,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCritText2,#mermaid-svg-MJIJDcASTl1s5Kb8 .activeCritText3{fill:#000 !important}#mermaid-svg-MJIJDcASTl1s5Kb8 .titleText{text-anchor:middle;font-size:18px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 g.classGroup text{fill:#9370db;stroke:none;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family);font-size:10px}#mermaid-svg-MJIJDcASTl1s5Kb8 g.classGroup text .title{font-weight:bolder}#mermaid-svg-MJIJDcASTl1s5Kb8 g.clickable{cursor:pointer}#mermaid-svg-MJIJDcASTl1s5Kb8 g.classGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-MJIJDcASTl1s5Kb8 g.classGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 .classLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.5}#mermaid-svg-MJIJDcASTl1s5Kb8 .classLabel .label{fill:#9370db;font-size:10px}#mermaid-svg-MJIJDcASTl1s5Kb8 .relation{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .dashed-line{stroke-dasharray:3}#mermaid-svg-MJIJDcASTl1s5Kb8 #compositionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #compositionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #aggregationStart{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #aggregationEnd{fill:#ECECFF;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #dependencyStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #dependencyEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #extensionStart{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 #extensionEnd{fill:#9370db;stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 .commit-id,#mermaid-svg-MJIJDcASTl1s5Kb8 .commit-msg,#mermaid-svg-MJIJDcASTl1s5Kb8 .branch-label{fill:lightgrey;color:lightgrey;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .pieTitleText{text-anchor:middle;font-size:25px;fill:#000;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .slice{font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 g.stateGroup text{fill:#9370db;stroke:none;font-size:10px;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 g.stateGroup text{fill:#9370db;fill:#333;stroke:none;font-size:10px}#mermaid-svg-MJIJDcASTl1s5Kb8 g.statediagram-cluster .cluster-label text{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 g.stateGroup .state-title{font-weight:bolder;fill:#000}#mermaid-svg-MJIJDcASTl1s5Kb8 g.stateGroup rect{fill:#ECECFF;stroke:#9370db}#mermaid-svg-MJIJDcASTl1s5Kb8 g.stateGroup line{stroke:#9370db;stroke-width:1}#mermaid-svg-MJIJDcASTl1s5Kb8 .transition{stroke:#9370db;stroke-width:1;fill:none}#mermaid-svg-MJIJDcASTl1s5Kb8 .stateGroup .composit{fill:white;border-bottom:1px}#mermaid-svg-MJIJDcASTl1s5Kb8 .stateGroup .alt-composit{fill:#e0e0e0;border-bottom:1px}#mermaid-svg-MJIJDcASTl1s5Kb8 .state-note{stroke:#aa3;fill:#fff5ad}#mermaid-svg-MJIJDcASTl1s5Kb8 .state-note text{fill:black;stroke:none;font-size:10px}#mermaid-svg-MJIJDcASTl1s5Kb8 .stateLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.7}#mermaid-svg-MJIJDcASTl1s5Kb8 .edgeLabel text{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .stateLabel text{fill:#000;font-size:10px;font-weight:bold;font-family:'trebuchet ms', verdana, arial;font-family:var(--mermaid-font-family)}#mermaid-svg-MJIJDcASTl1s5Kb8 .node circle.state-start{fill:black;stroke:black}#mermaid-svg-MJIJDcASTl1s5Kb8 .node circle.state-end{fill:black;stroke:white;stroke-width:1.5}#mermaid-svg-MJIJDcASTl1s5Kb8 #statediagram-barbEnd{fill:#9370db}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-cluster rect{fill:#ECECFF;stroke:#9370db;stroke-width:1px}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-cluster rect.outer{rx:5px;ry:5px}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-state .divider{stroke:#9370db}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-state .title-state{rx:5px;ry:5px}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-cluster.statediagram-cluster .inner{fill:white}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-cluster.statediagram-cluster-alt .inner{fill:#e0e0e0}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-cluster .inner{rx:0;ry:0}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-state rect.basic{rx:5px;ry:5px}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-state rect.divider{stroke-dasharray:10,10;fill:#efefef}#mermaid-svg-MJIJDcASTl1s5Kb8 .note-edge{stroke-dasharray:5}#mermaid-svg-MJIJDcASTl1s5Kb8 .statediagram-note rect{fill:#fff5ad;stroke:#aa3;stroke-width:1px;rx:0;ry:0}:root{--mermaid-font-family: '"trebuchet ms", verdana, arial';--mermaid-font-family: "Comic Sans MS", "Comic Sans", cursive}#mermaid-svg-MJIJDcASTl1s5Kb8 .error-icon{fill:#522}#mermaid-svg-MJIJDcASTl1s5Kb8 .error-text{fill:#522;stroke:#522}#mermaid-svg-MJIJDcASTl1s5Kb8 .edge-thickness-normal{stroke-width:2px}#mermaid-svg-MJIJDcASTl1s5Kb8 .edge-thickness-thick{stroke-width:3.5px}#mermaid-svg-MJIJDcASTl1s5Kb8 .edge-pattern-solid{stroke-dasharray:0}#mermaid-svg-MJIJDcASTl1s5Kb8 .edge-pattern-dashed{stroke-dasharray:3}#mermaid-svg-MJIJDcASTl1s5Kb8 .edge-pattern-dotted{stroke-dasharray:2}#mermaid-svg-MJIJDcASTl1s5Kb8 .marker{fill:#333}#mermaid-svg-MJIJDcASTl1s5Kb8 .marker.cross{stroke:#333}
:root { --mermaid-font-family: "trebuchet ms", verdana, arial;}
#mermaid-svg-MJIJDcASTl1s5Kb8 {
color: rgba(0, 0, 0, 0.75);
font: ;
}
K8S集群
web-service
web-ingress
apache
自动扩展节点
apache
自动扩展节点
apache
用户
实验步骤
[root@master ~
]
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: myweb
spec:
selector:
matchLabels:
app: apache
replicas: 1
template:
metadata:
labels:
app: apache
spec:
containers:
- name: apache
image: 192.168.1.100
:5000/myos
:httpd
ports:
- containerPort: 80
resources:
requests:
cpu: 200m
restartPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
name: web
-service
spec:
ports:
- protocol: TCP
port: 80
targetPort: 80
selector:
app: apache
type: ClusterIP
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: my
-app
annotations:
kubernetes.io/ingress.class: "nginx"
spec:
backend:
serviceName: web
-service
servicePort: 80
---
apiVersion: autoscaling/v1
kind: HorizontalPodAutoscaler
metadata:
name: myweb
spec:
minReplicas: 1
maxReplicas: 3
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: myweb
targetCPUUtilizationPercentage: 50
[root@master ~
]
[root@master ~
]
NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE
myweb Deployment/myweb 0%/50% 1 3 1 15m
当容器的cpu占用超过 50% 的时候,自动扩展一个POD,依次扩展,一直到最大值
如果cpu访问不足 50% 的时候,每 300s 缩减一个 POD 节点,直到最小值时停止
访问测试可以使用镜像内提供的 info.php增加系统负载,从而查看状态信息
访问地址 http://ip.xx.xx.xx/info.php?id=1000000
id 为计算结果集的数量,id 越大,占用内存和CPU越高,设置特别大容易死机