\u7cfb\u7d71\u8cc7\u6e90\u76e3\u63a7<\/strong><\/h2>\n

\u8cc7\u6e90\u8017\u76e1\u53ef\u80fd\u89f8\u767c\u5b58\u53d6\u554f\u984c\u3002\u5be6\u65bd\u9019\u4e9b\u76e3\u63a7\u6307\u4ee4\uff1a<\/p>\n

\r\n# Real-time resource monitoring\r\nhtop\r\n\r\n# Check disk I\/O\r\niostat -xz 1\r\n\r\n# Memory analysis\r\nfree -m\r\nvmstat 1\r\n\r\n# Process analysis\r\nps aux | sort -rn -k 3,3 | head -n 10\r\n        <\/code><\/pre>\n
\u6700\u4f73\u5316\u6280\u8853<\/strong><\/h2>\n
\u5728\u78ba\u5b9a\u6839\u672c\u539f\u56e0\u5f8c\uff0c\u5be6\u65bd\u9019\u4e9b\u6700\u4f73\u5316\u7b56\u7565\uff1a<\/p>\n
\n
TCP\u5806\u758a\u6700\u4f73\u5316\uff1a\n
\r\n# Add to \/etc\/sysctl.conf\r\nnet.ipv4.tcp_fin_timeout = 30\r\nnet.ipv4.tcp_keepalive_time = 1200\r\nnet.ipv4.tcp_max_syn_backlog = 8192\r\nnet.ipv4.tcp_tw_reuse = 1\r\n                <\/code><\/pre>\n<\/li>\n
DNS\u89e3\u6790\u589e\u5f37\uff1a\n
\r\n# Edit \/etc\/resolv.conf\r\nnameserver 8.8.8.8\r\nnameserver 1.1.1.1\r\noptions timeout:2 attempts:3\r\n                <\/code><\/pre>\n<\/li>\n<\/ol>\n
\u9810\u9632\u63aa\u65bd<\/strong><\/h2>\n
\u5be6\u65bd\u9019\u4e9b\u76e3\u63a7\u6307\u4ee4\u78bc\u4ee5\u9810\u9632\u672a\u4f86\u7684\u5b58\u53d6\u554f\u984c\uff1a<\/p>\n
\r\n#!\/bin\/bash\r\n# Server Health Check Script\r\nwhile true; do\r\n    # Check CPU load\r\n    CPU_LOAD=$(top -bn1 | grep \"Cpu(s)\" | awk '{print $2}')\r\n    \r\n    # Check memory usage\r\n    MEM_FREE=$(free -m | awk 'NR==2{print $4}')\r\n    \r\n    # Check disk space\r\n    DISK_USAGE=$(df -h \/ | awk 'NR==2{print $5}' | sed 's\/%\/\/')\r\n    \r\n    # Log if thresholds exceeded\r\n    if (( $(echo \"$CPU_LOAD > 80\" | bc -l) )) || [ $MEM_FREE -lt 500 ] || [ $DISK_USAGE -gt 90 ]; then\r\n        echo \"$(date): Resource threshold exceeded\" >> \/var\/log\/server-health.log\r\n    fi\r\n    \r\n    sleep 300\r\ndone\r\n        <\/code><\/pre>\n
\u9032\u968e\u7db2\u8def\u6700\u4f73\u5316\u6280\u8853<\/strong><\/h2>\n
\u5c0d\u65bc\u9047\u5230\u6301\u7e8c\u5b58\u53d6\u554f\u984c\u7684\u9999\u6e2f\u4f3a\u670d\u5668\uff0c\u5be6\u65bd\u9032\u968e\u7db2\u8def\u6700\u4f73\u5316\u6280\u8853\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6548\u80fd\u3002\u8003\u616e\u4ee5\u4e0b\u6280\u8853\u65b9\u6cd5\uff1a<\/p>\n
1. TCP BBR\u5be6\u65bd<\/h3>\n
Google\u7684BBR\u64c1\u585e\u63a7\u5236\u6f14\u7b97\u6cd5\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u8f38\u9001\u91cf\u4e26\u6e1b\u5c11\u5ef6\u9072\u3002\u4ee5\u4e0b\u662f\u5be6\u65bd\u65b9\u6cd5\uff1a<\/p>\n
\r\n# Check if BBR is available\r\nmodprobe tcp_bbr\r\necho \"tcp_bbr\" >> \/etc\/modules-load.d\/modules.conf\r\n\r\n# Enable BBR\r\necho \"net.core.default_qdisc=fq\" >> \/etc\/sysctl.conf\r\necho \"net.ipv4.tcp_congestion_control=bbr\" >> \/etc\/sysctl.conf\r\nsysctl -p\r\n\r\n# Verify BBR is running\r\nsysctl net.ipv4.tcp_congestion_control\r\n        <\/code><\/pre>\n
2. \u7db2\u8def\u4ecb\u9762\u8abf\u6821<\/h3>\n
\u4f7f\u7528\u9019\u4e9b\u53c3\u6578\u6700\u4f73\u5316\u7db2\u8def\u4ecb\u9762\u6548\u80fd\uff1a<\/p>\n
\r\n# Add to \/etc\/sysctl.conf\r\nnet.core.rmem_max = 16777216\r\nnet.core.wmem_max = 16777216\r\nnet.ipv4.tcp_rmem = 4096 87380 16777216\r\nnet.ipv4.tcp_wmem = 4096 65536 16777216\r\nnet.ipv4.tcp_mtu_probing = 1\r\n        <\/code><\/pre>\n
\u8ca0\u8f09\u5e73\u8861\u7b56\u7565<\/strong><\/h2>\n
\u5728\u8655\u7406\u9999\u6e2f\u4f3a\u670d\u5668\u74b0\u5883\u4e2d\u7684\u9ad8\u6d41\u91cf\u5834\u666f\u6642\uff0c\u5be6\u65bd\u9069\u7576\u7684\u8ca0\u8f09\u5e73\u8861\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5be6\u7528\u7684HAProxy\u7d44\u614b\u7bc4\u4f8b\uff1a<\/p>\n
\r\nglobal\r\n    log \/dev\/log local0\r\n    maxconn 4096\r\n    user haproxy\r\n    group haproxy\r\n\r\ndefaults\r\n    log     global\r\n    mode    http\r\n    option  httplog\r\n    option  dontlognull\r\n    retries 3\r\n    timeout connect 5s\r\n    timeout client  30s\r\n    timeout server  30s\r\n\r\nfrontend http_front\r\n    bind *:80\r\n    stats uri \/haproxy?stats\r\n    default_backend http_back\r\n\r\nbackend http_back\r\n    balance roundrobin\r\n    cookie SERVERID insert indirect nocache\r\n    server server1 10.0.0.1:80 check cookie server1\r\n    server server2 10.0.0.2:80 check cookie server2\r\n        <\/code><\/pre>\n
\u5b89\u5168\u8003\u91cf<\/strong><\/h2>\n
\u4f3a\u670d\u5668\u5b58\u53d6\u554f\u984c\u6709\u6642\u53ef\u80fd\u8207\u5b89\u5168\u76f8\u95dc\u3002\u5be6\u65bd\u9019\u4e9b\u5b89\u5168\u63aa\u65bd\u4ee5\u9632\u6b62\u672a\u7d93\u6388\u6b0a\u7684\u5b58\u53d6\uff0c\u540c\u6642\u4fdd\u6301\u53ef\u7528\u6027\uff1a<\/p>\n
1. Fail2Ban\u7d44\u614b<\/h3>\n
\r\n# \/etc\/fail2ban\/jail.local\r\n[sshd]\r\nenabled = true\r\nport = ssh\r\nfilter = sshd\r\nlogpath = \/var\/log\/auth.log\r\nmaxretry = 3\r\nfindtime = 300\r\nbantime = 3600\r\n        <\/code><\/pre>\n
2. ModSecurity\u5be6\u65bd<\/h3>\n
\u5c0d\u65bc\u7db2\u8def\u4f3a\u670d\u5668\uff0c\u4f7f\u7528\u9019\u4e9b\u57fa\u672c\u898f\u5247\u5be6\u65bdModSecurity\uff1a<\/p>\n
\r\n# Basic ModSecurity configuration\r\nSecRuleEngine On\r\nSecRequestBodyAccess On\r\nSecResponseBodyAccess On\r\nSecResponseBodyMimeType text\/plain text\/html text\/xml\r\nSecDataDir \/tmp\/modsecurity\r\nSecAuditEngine RelevantOnly\r\nSecAuditLog \/var\/log\/modsec_audit.log\r\n        <\/code><\/pre>\n
\u6548\u80fd\u76e3\u63a7\u5de5\u5177<\/strong><\/h2>\n
\u4f7f\u7528\u9019\u4e9b\u5de5\u5177\u5be6\u65bd\u5168\u9762\u76e3\u63a7\uff1a<\/p>\n
\n
Prometheus\u7528\u65bc\u6307\u6a19\u6536\u96c6<\/li>\n
Grafana\u7528\u65bc\u8996\u89ba\u5316<\/li>\n
Node Exporter\u7528\u65bc\u7cfb\u7d71\u6307\u6a19<\/li>\n
Blackbox Exporter\u7528\u65bc\u7aef\u9ede\u76e3\u63a7<\/li>\n<\/ol>\n
\u4ee5\u4e0b\u662f\u57fa\u672c\u7684Prometheus\u7d44\u614b\uff1a<\/p>\n
\r\nglobal:\r\n  scrape_interval: 15s\r\n  evaluation_interval: 15s\r\n\r\nscrape_configs:\r\n  - job_name: 'node'\r\n    static_configs:\r\n      - targets: ['localhost:9100']\r\n\r\n  - job_name: 'blackbox'\r\n    metrics_path: \/probe\r\n    params:\r\n      module: [http_2xx]\r\n    static_configs:\r\n      - targets:\r\n        - http:\/\/your-hong-kong-server.com\r\n    relabel_configs:\r\n      - source_labels: [__address__]\r\n        target_label: __param_target\r\n      - source_labels: [__param_target]\r\n        target_label: instance\r\n      - target_label: __address__\r\n        replacement: localhost:9115\r\n        <\/code><\/pre>\n
\u707d\u96e3\u5fa9\u539f\u8a08\u5283<\/strong><\/h2>\n
\u4f7f\u7528\u9019\u4e9b\u95dc\u9375\u5143\u4ef6\u5be6\u65bd\u5f37\u5927\u7684\u707d\u96e3\u5fa9\u539f\u8a08\u5283\uff1a<\/p>\n
\n
\u4f7f\u7528rsnapshot\u7b49\u5de5\u5177\u5b9a\u671f\u7cfb\u7d71\u5feb\u7167<\/li>\n
\u5177\u6709\u81ea\u52d5\u5bb9\u932f\u79fb\u8f49\u7684\u8cc7\u6599\u5eab\u8907\u88fd<\/li>\n
\u4f7f\u7528Ansible\u6216Chef\u9032\u884c\u7d44\u614b\u7ba1\u7406<\/li>\n
\u81ea\u52d5\u5fa9\u539f\u6307\u4ee4\u78bc<\/li>\n<\/ol>\n
\u7e3d\u4e4b\uff0c\u4fdd\u6301\u9999\u6e2f\u4f3a\u670d\u5668\u7684\u53ef\u9760\u5b58\u53d6\u9700\u8981\u5168\u9762\u4e86\u89e3\u7db2\u8def\u57fa\u790e\u8a2d\u65bd\u3001\u7cfb\u7d71\u6700\u4f73\u5316\u548c\u5b89\u5168\u63aa\u65bd\u3002\u5b9a\u671f\u76e3\u63a7\u3001\u4e3b\u52d5\u7dad\u8b77\u548c\u5be6\u65bd\u9019\u4e9b\u6280\u8853\u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u78ba\u4fdd\u4f3a\u670d\u5668\u79df\u7528\u548c\u4f3a\u670d\u5668\u8a17\u7ba1\u74b0\u5883\u4e2d\u7684\u6700\u4f73\u4f3a\u670d\u5668\u6548\u80fd\u3002<\/p>\n
\u6545\u969c\u6392\u9664\u5de5\u4f5c\u6d41\u7a0b<\/strong><\/h2>\n
\u8655\u7406\u5b58\u53d6\u554f\u984c\u6642\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u7cfb\u7d71\u65b9\u6cd5\uff1a<\/p>\n
\n
\u57f7\u884c\u521d\u59cb\u8a3a\u65b7\u6307\u4ee4\u78bc<\/li>\n
\u5206\u6790\u7db2\u8def\u6307\u6a19<\/li>\n
\u6aa2\u67e5\u7cfb\u7d71\u8cc7\u6e90<\/li>\n
\u9a57\u8b49\u9632\u706b\u7246\u898f\u5247<\/li>\n
\u5be6\u65bd\u6700\u4f73\u5316<\/li>\n
\u76e3\u63a7\u6539\u9032\u60c5\u6cc1<\/li>\n<\/ol>\n
\u5c0d\u65bc\u9999\u6e2f\u4f3a\u670d\u5668\u5b58\u53d6\u554f\u984c\uff0c\u7121\u8ad6\u662f\u5728\u4f3a\u670d\u5668\u79df\u7528\u9084\u662f\u4f3a\u670d\u5668\u8a17\u7ba1\u74b0\u5883\u4e2d\uff0c\u9019\u7a2e\u6280\u8853\u65b9\u6cd5\u90fd\u80fd\u78ba\u4fdd\u7cfb\u7d71\u6027\u5730\u89e3\u6c7a\u554f\u984c\u3002\u8a18\u4f4f\u5728\u5be6\u65bd\u4efb\u4f55\u7cfb\u7d71\u5c64\u7d1a\u4fee\u6539\u4e4b\u524d\u8a18\u9304\u6240\u6709\u66f4\u6539\u4e26\u7dad\u8b77\u5b9a\u671f\u5099\u4efd\u3002<\/p>\n
[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"
[vc_row][vc_column][vc_column_text css=””]  […]<\/p>\n
Read More…<\/a><\/p>\n","protected":false},"author":2,"featured_media":20590,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[5359,5347,5348,5349,2921],"class_list":["post-20596","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hong-kong-dedicated-server-tc","tag-5359","tag-hong-kong-server-access-tc","tag-server-troubleshooting-tc","tag-colocation-maintenance-tc","tag-network-diagnostics-tc"],"acf":[],"yoast_head":"\n