# 2. 实施步骤
# 步骤1：分析网络性能瓶颈
# 步骤2：调整TCP/IP参数
# 步骤3：应用内核参数
# 步骤4：验证性能改进
# 步骤5：测试与验证

# 3. 应用效果
# 提高了Web服务器的响应速度
# 增加了并发连接数
# 减少了网络延迟

# 调整TCP/IP参数
cat > /etc/sysctl.d/web.conf << 'EOF' # 网络连接优化 net.core.somaxconn = 65535 net.ipv4.tcp_max_syn_backlog = 65535 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_keepalive_time = 300 net.ipv4.tcp_keepalive_probes = 5 net.ipv4.tcp_keepalive_intvl = 15 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 0 # 网络缓冲区优化 net.core.rmem_default = 262144 net.core.rmem_max = 16777216 net.core.wmem_default = 262144 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 # TCP拥塞控制 net.ipv4.tcp_congestion_control = bbr # TCP SYN cookies net.ipv4.tcp_syncookies = 1 # TCP fast open net.ipv4.tcp_fastopen = 3 EOF # 应用内核参数 sysctl -p /etc/sysctl.d/web.conf # 验证内核参数 sysctl -a | grep net.core.somaxconn sysctl -a | grep net.ipv4.tcp_congestion_control # 测试网络性能 iperf3 -s & iperf3 -c localhost -t 60 # 测试Web服务器性能 ab -n 10000 -c 1000 http://localhost/

# 2. 实施步骤
# 步骤1：分析网络接口性能
# 步骤2：调整网络接口参数
# 步骤3：重启网络服务
# 步骤4：验证性能改进
# 步骤5：测试与验证

# 3. 应用效果
# 提高了数据库服务器的网络吞吐量
# 减少了网络延迟
# 提高了数据库的复制速度

# 调整网络接口参数
ethtool -G eth0 rx 8192 tx 8192
ethtool -K eth0 tso on gso on gro on lro on
ethtool -s eth0 speed 10000 duplex full autoneg off

# 永久调整
cat > /etc/sysconfig/network-scripts/ifcfg-eth0 << 'EOF' DEVICE=eth0 NAME=eth0 BOOTPROTO=static IPADDR=192.168.1.100 NETMASK=255.255.255.0 GATEWAY=192.168.1.1 ONBOOT=yes MTU=9000 ETHTOOL_OPTS="-G rx 8192 tx 8192 -K tso on gso on gro on lro on -s speed 10000 duplex full autoneg off" EOF # 重启网络服务 systemctl restart NetworkManager # 验证网络接口参数 ethtool -g eth0 ethtool -k eth0 ethtool -s eth0 # 测试网络性能 iperf3 -s & iperf3 -c localhost -t 60 -M 9000 # 测试数据库复制性能 # 主库执行 mysql -u root -p -e "CREATE DATABASE fgedudb;" mysql -u root -p fgedudb -e "CREATE TABLE fgedu_test (id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(255));" for i in {1..10000}; do mysql -u root -p fgedudb -e "INSERT INTO fgedu_test (name) VALUES ('test$i');"; done # 从库执行 mysql -u root -p -e "SHOW SLAVE STATUS\G;"

# 2. 实施步骤
# 步骤1：部署负载均衡器
# 步骤2：配置负载均衡
# 步骤3：配置健康检查
# 步骤4：配置会话保持
# 步骤5：验证性能改进
# 步骤6：测试与验证

# 3. 应用效果
# 提高了Web应用的可用性
# 增加了系统的并发处理能力
# 减少了单个服务器的负载

# 部署HAProxy
dnf install -y haproxy

# 配置HAProxy
cat > /etc/haproxy/haproxy.cfg << 'EOF' global log /dev/log local0 log /dev/log local1 notice chroot /var/lib/haproxy stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners stats timeout 30s user haproxy group haproxy daemon defaults log global mode http option httplog option dontlognull timeout connect 5000 timeout client 50000 timeout server 50000 errorfile 400 /etc/haproxy/errors/400.http errorfile 403 /etc/haproxy/errors/403.http errorfile 408 /etc/haproxy/errors/408.http errorfile 500 /etc/haproxy/errors/500.http errorfile 502 /etc/haproxy/errors/502.http errorfile 503 /etc/haproxy/errors/503.http errorfile 504 /etc/haproxy/errors/504.http frontend http-in bind *:80 mode http default_backend servers backend servers mode http balance roundrobin option httpchk GET /health http-check expect status 200 cookie SERVERID insert indirect nocache server server1 192.168.1.101:80 check cookie server1 server server2 192.168.1.102:80 check cookie server2 server server3 192.168.1.103:80 check cookie server3 server server4 192.168.1.104:80 check cookie server4 server server5 192.168.1.105:80 check cookie server5 EOF # 启动HAProxy服务 systemctl start haproxy systemctl enable haproxy # 测试负载均衡 for i in {1..10}; do curl http://localhost; echo; done # 测试性能 ab -n 10000 -c 1000 http://localhost/