K8s可视化监控告警【4】--使用代理提供TLS+安全认证
1.证书密钥获取,两种方式选其一#one[root@k8s-master ~]#openssl genrsa -out cert.key 2048[root@k8s-master ~]#openssl req -new -x509 -key cert.key -out cert.pem -days 3650 -subj /CN=www.example.com#twoopenssl ge...
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1.证书密钥获取,两种方式选其一
#one
[root@k8s-master ~]#openssl genrsa -out cert.key 2048
[root@k8s-master ~]#openssl req -new -x509 -key cert.key -out cert.pem -days 3650 -subj /CN=www.example.com
#two
openssl genrsa > cert.key
openssl req -new -x509 -key cert.key > cert.pem
2.创建auth_basic
[root@k8s-master ~]#htpasswd -bc .htpasswd admin admin
3.创建secret
[root@k8s-master ~]#kubectl create secret generic proxy-prometheus --from-file=cert.key --from-file=cert.pem --from-file=.htpasswd
4.app部署(configMap主要地址重写的IP为任意节点IP)
---
apiVersion: v1
kind: ReplicationController
metadata:
name: proxy-prometheus
spec:
replicas: 1
template:
metadata:
name: proxy-prometheus
labels:
proxy: prometheus
spec:
tolerations:
- key: node-role.kubernetes.io/master
operation: Equal
effect: NoSchedule
volumes:
- name: certs
secret:
secretName: proxy-prometheus
- name: proxy-conf
configMap:
name: proxy-prometheus-conf
- name: china-time
hostPath:
path: /usr/share/zoneinfo/Asia
containers:
- image: nginx
name: proxy-prometheus
ports:
- name: test
containerPort: 80
- name: prom
containerPort: 9090
- name: alert
containerPort: 9093
- name: prom-tls
containerPort: 38443
- name: alert-tls
containerPort: 39443
imagePullPolicy: IfNotPresent
volumeMounts:
- name: certs
mountPath: /etc/nginx/certs/
readOnly: true
- name: proxy-conf
mountPath: /etc/nginx/nginx.conf
subPath: nginx.conf
- name: proxy-conf
mountPath: /etc/nginx/conf.d/default.conf
subPath: default.conf
- name: proxy-conf
mountPath: /etc/nginx/conf.d/prometheus.conf
subPath: prometheus.conf
- name: proxy-conf
mountPath: /etc/nginx/conf.d/alertmanager.conf
subPath: alertmanager.conf
- name: proxy-conf
mountPath: /etc/nginx/conf.d/https.conf
subPath: https.conf
- name: china-time
mountPath: /etc/localtime
subPath: Shanghai
---
kind: Service
apiVersion: v1
metadata:
labels:
function1: nginx-proxy
function2: tls
function3: auth_basic
app1: prometheus
app2: alertmanager
name: proxy-prometheus
namespace: kube-system
spec:
type: NodePort
ports:
- name: test
port: 30080
protocol: TCP
targetPort: 80
nodePort: 30080
- name: tls-prom
port: 38443
protocol: TCP
targetPort: 38443
nodePort: 38443
- name: tls-alert
port: 39443
protocol: TCP
targetPort: 39443
nodePort: 39443
- name: prom
port: 9090
protocol: TCP
targetPort: 9090
nodePort: 9090
- name: alert
port: 9093
protocol: TCP
targetPort: 9093
nodePort: 9093
selector:
proxy: prometheus
---
apiVersion: v1
kind: ConfigMap
metadata:
name: proxy-prometheus-conf
labels:
proxy: prometheus
data:
nginx.conf: |
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
server_tokens off;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
#gzip on;
include /etc/nginx/conf.d/*.conf;
}
prometheus.conf: |
server {
listen 38443 ssl;
server_name localhost;
#charset koi8-r;
#access_log /var/log/nginx/host.access.log main;
ssl_certificate certs/cert.pem;
ssl_certificate_key certs/cert.key;
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;
location / {
#root /usr/share/nginx/html;
#index index.html index.htm;
proxy_pass http://prometheus:9090/;
auth_basic "Prometheus";
auth_basic_user_file "certs/.htpasswd";
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
location ~ /\.ht {
deny all;
}
}
alertmanager.conf: |
server {
listen 39443 ssl;
server_name localhost;
#charset koi8-r;
#access_log /var/log/nginx/host.access.log main;
ssl_certificate certs/cert.pem;
ssl_certificate_key certs/cert.key;
ssl_session_cache shared:SSL:1m;
ssl_session_timeout 5m;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;
location / {
#root /usr/share/nginx/html;
#index index.html index.htm;
proxy_pass http://alertmanager:9093/;
auth_basic "Alertmanager";
auth_basic_user_file "certs/.htpasswd";
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
location ~ /\.ht {
deny all;
}
}
https.conf: |
server {
listen 9090;
server_name localhost;
#rewrite ^(.*)$ https://${server_name}:8443$1 permanent;
rewrite ^(.*)$ https://节点IP:38443$1 permanent;
}
server {
listen 9093;
server_name localhost;
#rewrite ^(.*)$ https://${server_name}:9443$1 permanent;
rewrite ^(.*)$ https://节点IP:39443$1 permanent;
}
default.conf: |
server {
listen 80;
server_name localhost;
#charset koi8-r;
#access_log /var/log/nginx/host.access.log main;
location / {
root /usr/share/nginx/html;
index index.html index.htm;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
location ~ /\.ht {
deny all;
}
}
5.效果对比
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