fix_dns.sh
4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
#!/bin/bash
echo "=== 修复 DNS 解析问题 ==="
echo "问题: Pod 无法解析外部域名 api.awsmpc.asia"
echo "解决方案: 修改 DNS 配置或使用 IP 地址"
echo ""
echo "1. 测试 Pod 内的 DNS 解析:"
kubectl run dns-test --image=busybox -n ecommerce --rm -it --restart=Never -- nslookup api.awsmpc.asia
echo ""
echo "2. 获取 api.awsmpc.asia 的 IP 地址:"
API_GATEWAY_IP=$(dig +short api.awsmpc.asia | head -1)
echo "API Gateway IP: $API_GATEWAY_IP"
echo ""
echo "3. 更新 nginx 配置使用 IP 地址:"
cat << EOF | kubectl apply -f -
apiVersion: v1
kind: ConfigMap
metadata:
name: frontend-nginx-main-config
namespace: ecommerce
labels:
app: frontend
data:
nginx.conf: |
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
# Upstream with IP address to avoid DNS issues
upstream api_gateway {
server ${API_GATEWAY_IP}:443;
}
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html;
index index.html;
# Enable gzip compression
gzip on;
gzip_vary on;
gzip_min_length 1024;
gzip_proxied any;
gzip_comp_level 6;
gzip_types
text/plain
text/css
text/xml
text/javascript
application/json
application/javascript
application/xml+rss
application/atom+xml
image/svg+xml;
# Security headers
add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-XSS-Protection "1; mode=block" always;
add_header X-Content-Type-Options "nosniff" always;
add_header Referrer-Policy "no-referrer-when-downgrade" always;
add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
# Handle client-side routing
location / {
try_files $uri $uri/ /index.html;
add_header Cache-Control "no-cache, no-store, must-revalidate";
}
# Cache static assets
location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
expires 1y;
add_header Cache-Control "public, immutable, max-age=31536000";
access_log off;
}
# API proxy - use upstream with IP address
location /api/ {
proxy_pass https://api_gateway/;
proxy_http_version 1.1;
proxy_set_header Upgrade \$http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host api.awsmpc.asia;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto \$scheme;
proxy_set_header X-Forwarded-Host \$host;
proxy_set_header X-Forwarded-Port \$server_port;
proxy_cache_bypass \$http_upgrade;
# SSL settings
proxy_ssl_server_name on;
proxy_ssl_verify off;
# Timeout settings
proxy_connect_timeout 30s;
proxy_send_timeout 30s;
proxy_read_timeout 30s;
}
# Health check endpoint
location /health {
access_log off;
add_header Content-Type text/plain;
return 200 "healthy\n";
}
# Error pages
error_page 404 /index.html;
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}
}
}
EOF
echo ""
echo "4. 重启前端:"
kubectl rollout restart deployment frontend -n ecommerce