{"id":19351,"date":"2024-08-24T08:09:29","date_gmt":"2024-08-24T00:09:29","guid":{"rendered":"https:\/\/www.varidata.com\/uncategorized-zh-cn\/how-to-configure-static-ip-in-centos-7\/"},"modified":"2025-04-07T11:14:31","modified_gmt":"2025-04-07T03:14:31","slug":"how-to-configure-static-ip-in-centos-7","status":"publish","type":"post","link":"https:\/\/www.varidata.com\/zh-cn\/uncategorized-zh-cn\/how-to-configure-static-ip-in-centos-7\/","title":{"rendered":"\u5982\u4f55\u5728 CentOS 7 \u4e2d\u914d\u7f6e\u9759\u6001 IP\uff1f"},"content":{"rendered":"<p>\u5728 CentOS 7 \u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u9759\u6001 IP \u5730\u5740\u662f\u7f51\u7edc\u7ba1\u7406\u548c\u670d\u52a1\u5668\u7ba1\u7406\u7684\u4e00\u9879\u91cd\u8981\u6280\u80fd\u3002\u672c\u6307\u5357\u63d0\u4f9b\u4e86\u8bbe\u7f6e\u9759\u6001 IP \u914d\u7f6e\u7684\u5b9e\u7528\u65b9\u6cd5\uff0c\u7279\u522b\u9002\u7528\u4e8e\u670d\u52a1\u5668\u73af\u5883\u3002\u65e0\u8bba\u60a8\u662f\u7ba1\u7406\u670d\u52a1\u5668\u6258\u7ba1\u8fd8\u662f<a href=\"https:\/\/www.varidata.com\/zh-cn\/server\/hk\/cn2\/\" target=\"_blank\">\u914d\u7f6e\u670d\u52a1\u5668\u79df\u7528<\/a>\u73af\u5883\uff0c\u4e86\u89e3\u9759\u6001 IP \u8bbe\u7f6e\u90fd\u80fd\u786e\u4fdd\u7f51\u7edc\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u8bbf\u95ee\u3002<\/p>\n<h2><strong>\u4e86\u89e3\u7f51\u7edc\u914d\u7f6e\u524d\u63d0\u6761\u4ef6<\/strong><\/h2>\n<p>\u5728\u6df1\u5165\u914d\u7f6e\u8fc7\u7a0b\u4e4b\u524d\uff0c\u4e86\u89e3\u52a8\u6001\u548c\u9759\u6001 IP \u5bfb\u5740\u4e4b\u95f4\u7684\u533a\u522b\u81f3\u5173\u91cd\u8981\u3002\u867d\u7136\u52a8\u6001 IP \u5bfb\u5740\uff08DHCP\uff09\u9002\u7528\u4e8e\u4e34\u65f6\u8fde\u63a5\uff0c\u4f46\u5bf9\u4e8e\u9700\u8981\u6301\u7eed\u8bbf\u95ee\u6027\u548c\u7a33\u5b9a\u7f51\u7edc\u914d\u7f6e\u7684\u670d\u52a1\u5668\u6765\u8bf4\uff0c\u9759\u6001 IP \u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h3>\u9759\u6001 IP \u914d\u7f6e\u7684\u4e3b\u8981\u4f18\u52bf\uff1a<\/h3>\n<ul>\n<li>\u670d\u52a1\u5668\u8bbf\u95ee\u7a33\u5b9a\u6027<\/li>\n<li>\u63d0\u9ad8 DNS \u89e3\u6790\u53ef\u9760\u6027<\/li>\n<li>\u66f4\u597d\u7684\u5b89\u5168\u63a7\u5236\u548c\u76d1\u63a7<\/li>\n<li>\u6258\u7ba1\u670d\u52a1\u548c\u5e94\u7528\u7a0b\u5e8f\u7684\u5fc5\u8981\u6761\u4ef6<\/li>\n<li>\u670d\u52a1\u5668\u95f4\u901a\u4fe1\u6240\u5fc5\u9700<\/li>\n<\/ul>\n<p>\u5728\u7ee7\u7eed\u4e4b\u524d\u8bf7\u6536\u96c6\u4ee5\u4e0b\u57fa\u672c\u7f51\u7edc\u53c2\u6570\uff1a<\/p>\n<pre><code># \u68c0\u67e5\u5f53\u524d\u7f51\u7edc\u63a5\u53e3\u540d\u79f0\r\nip link show\r\n\r\n# \u67e5\u770b\u5f53\u524d IP \u914d\u7f6e\r\nip addr show\r\n\r\n# \u663e\u793a\u8def\u7531\u4fe1\u606f\r\nroute -n\r\n\r\n# \u68c0\u67e5 DNS \u914d\u7f6e\r\ncat \/etc\/resolv.conf<\/code><\/pre>\n<h3>\u6240\u9700\u7f51\u7edc\u4fe1\u606f\uff1a<\/h3>\n<ul>\n<li>\u7f51\u7edc\u63a5\u53e3\u540d\u79f0\uff08\u901a\u5e38\u4e3a enp0s3\u3001ens33 \u6216 eth0\uff09<\/li>\n<li>\u76ee\u6807\u9759\u6001 IP \u5730\u5740<\/li>\n<li>\u5b50\u7f51\u63a9\u7801\uff08CIDR \u6216\u5341\u8fdb\u5236\u8868\u793a\u6cd5\uff09<\/li>\n<li>\u9ed8\u8ba4\u7f51\u5173<\/li>\n<li>\u4e3b\u8981\u548c\u6b21\u8981 DNS \u670d\u52a1\u5668<\/li>\n<li>\u7f51\u7edc\u63a5\u53e3 MAC \u5730\u5740<\/li>\n<\/ul>\n<h2><strong>\u7f51\u7edc\u63a5\u53e3\u8bc6\u522b\u548c\u5206\u6790<\/strong><\/h2>\n<p>\u73b0\u4ee3 CentOS 7 \u7cfb\u7edf\u4f7f\u7528\u53ef\u9884\u6d4b\u7684\u7f51\u7edc\u63a5\u53e3\u547d\u540d\u3002\u4e86\u89e3\u8fd9\u4e9b\u547d\u540d\u89c4\u5219\u5f88\u91cd\u8981\uff1a<\/p>\n<pre><code># \u5217\u51fa\u6240\u6709\u7f51\u7edc\u63a5\u53e3\r\nnmcli device status\r\n\r\n# \u83b7\u53d6\u8be6\u7ec6\u63a5\u53e3\u4fe1\u606f\r\nethtool ens33\r\n\r\n# \u68c0\u67e5\u63a5\u53e3\u7edf\u8ba1\u4fe1\u606f\r\nip -s link show ens33<\/code><\/pre>\n<h3>\u63a5\u53e3\u547d\u540d\u89c4\u5219\uff1a<\/h3>\n<ul>\n<li>en &#8211; \u4ee5\u592a\u7f51<\/li>\n<li>wl &#8211; \u65e0\u7ebf\u7f51\u7edc<\/li>\n<li>p0s3 &#8211; PCI \u603b\u7ebf\u4f4d\u7f6e<\/li>\n<li>s33 &#8211; \u63d2\u69fd\u53f7<\/li>\n<\/ul>\n<h2><strong>\u5168\u9762\u914d\u7f6e\u6d41\u7a0b<\/strong><\/h2>\n<p>\u6309\u7167\u4ee5\u4e0b\u8be6\u7ec6\u6b65\u9aa4\u8fdb\u884c\u7a33\u5065\u7684\u9759\u6001 IP \u914d\u7f6e\uff1a<\/p>\n<h3>1. \u7f51\u7edc\u914d\u7f6e\u6587\u4ef6\u7ba1\u7406<\/h3>\n<pre><code># \u5bfc\u822a\u5230\u7f51\u7edc\u811a\u672c\u76ee\u5f55\r\ncd \/etc\/sysconfig\/network-scripts\/\r\n\r\n# \u521b\u5efa\u73b0\u6709\u914d\u7f6e\u5907\u4efd\r\ncp ifcfg-ens33 ifcfg-ens33.backup-$(date +%Y%m%d)\r\n\r\n# \u7f16\u8f91\u914d\u7f6e\u6587\u4ef6\r\nvi ifcfg-ens33<\/code><\/pre>\n<h3>2. \u5b8c\u6574\u7f51\u7edc\u63a5\u53e3\u914d\u7f6e<\/h3>\n<pre><code>TYPE=Ethernet\r\nPROXY_METHOD=none\r\nBROWSER_ONLY=no\r\nBOOTPROTO=static\r\nDEFROUTE=yes\r\nIPV4_FAILURE_FATAL=no\r\nIPV6INIT=yes\r\nIPV6_AUTOCONF=yes\r\nIPV6_DEFROUTE=yes\r\nIPV6_FAILURE_FATAL=no\r\nNAME=ens33\r\nUUID=your-uuid-here\r\nDEVICE=ens33\r\nONBOOT=yes\r\nIPADDR=xxx.xxx.x.xxx\r\nNETMASK=xxx.xxx.xxx.x\r\nGATEWAY=xxx.xxx.x.x\r\nDNS1=8.8.8.8\r\nDNS2=8.8.4.4\r\nIPV6_ADDR_GEN_MODE=stable-privacy<\/code><\/pre>\n<h2><strong>\u9ad8\u7ea7\u7f51\u7edc\u914d\u7f6e\u9009\u9879<\/strong><\/h2>\n<p>\u4f01\u4e1a\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\u901a\u5e38\u9700\u8981\u66f4\u590d\u6742\u7684\u7f51\u7edc\u914d\u7f6e\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5b9e\u73b0\u9ad8\u7ea7\u7f51\u7edc\u529f\u80fd\uff1a<\/p>\n<h3>1. \u591a IP \u5730\u5740\u914d\u7f6e<\/h3>\n<pre><code># \u4e3b\u8981 IP \u914d\u7f6e\r\nIPADDR0=xxx.xxx.x.xxx\r\nPREFIX0=24\r\n\r\n# \u6b21\u8981 IP \u914d\u7f6e\r\nIPADDR1=xxx.xxx.x.xxx\r\nPREFIX1=24\r\n\r\n# \u7b2c\u4e09 IP \u914d\u7f6e\r\nIPADDR2=xxx.xxx.x.xxx\r\nPREFIX2=24<\/code><\/pre>\n<h3>2. \u7f51\u7edc\u7ed1\u5b9a\u5b9e\u73b0\u5197\u4f59<\/h3>\n<pre><code># \u521b\u5efa\u7ed1\u5b9a\u914d\u7f6e\u6587\u4ef6\r\nvi \/etc\/sysconfig\/network-scripts\/ifcfg-bond0\r\n\r\nDEVICE=bond0\r\nNAME=bond0\r\nTYPE=Bond\r\nBONDING_MASTER=yes\r\nBOOTPROTO=static\r\nONBOOT=yes\r\nIPADDR=xxx.xxx.x.xxx\r\nNETMASK=xxx.xxx.xxx.x\r\nGATEWAY=xxx.xxx.x.x\r\nBONDING_OPTS=\"mode=1 miimon=100\"<\/code><\/pre>\n<h2><strong>\u5168\u9762\u6545\u969c\u6392\u9664\u6307\u5357<\/strong><\/h2>\n<p>\u9047\u5230\u7f51\u7edc\u95ee\u9898\u65f6\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u7cfb\u7edf\u6545\u969c\u6392\u9664\u65b9\u6cd5\uff1a<\/p>\n<h3>1. \u8fde\u63a5\u9a8c\u8bc1<\/h3>\n<pre><code># \u68c0\u67e5\u63a5\u53e3\u72b6\u6001\r\nip link show ens33\r\n\r\n# \u9a8c\u8bc1 IP \u5206\u914d\r\nip addr show ens33\r\n\r\n# \u6d4b\u8bd5\u672c\u5730\u7f51\u7edc\u8fde\u63a5\r\nping -c 4 xxx.xxx.x.x\r\n\r\n# \u68c0\u67e5 DNS \u89e3\u6790\r\ndig google.com\r\n\r\n# \u8ddf\u8e2a\u7f51\u7edc\u8def\u5f84\r\ntraceroute 8.8.8.8<\/code><\/pre>\n<h3>2. \u670d\u52a1\u72b6\u6001\u9a8c\u8bc1<\/h3>\n<pre><code># \u68c0\u67e5\u7f51\u7edc\u670d\u52a1\u72b6\u6001\r\nsystemctl status network\r\n\r\n# \u67e5\u770b\u7f51\u7edc\u7ba1\u7406\u5668\u72b6\u6001\r\nsystemctl status NetworkManager\r\n\r\n# \u67e5\u770b\u7cfb\u7edf\u65e5\u5fd7\r\njournalctl -u network\r\njournalctl -u NetworkManager<\/code><\/pre>\n<h2><strong>\u6027\u80fd\u4f18\u5316<\/strong><\/h2>\n<p>\u4f7f\u7528\u8fd9\u4e9b\u5185\u6838\u53c2\u6570\u4f18\u5316\u7f51\u7edc\u6027\u80fd\uff1a<\/p>\n<pre><code># \u7f16\u8f91 sysctl \u914d\u7f6e\r\nvi \/etc\/sysctl.conf\r\n\r\n# \u6dfb\u52a0\u6027\u80fd\u53c2\u6570\r\nnet.ipv4.tcp_fin_timeout = 20\r\nnet.ipv4.tcp_keepalive_time = 1200\r\nnet.ipv4.tcp_max_syn_backlog = 4096\r\nnet.core.rmem_max = 16777216\r\nnet.core.wmem_max = 16777216<\/code><\/pre>\n<h2><strong>\u5b89\u5168\u52a0\u56fa\u63aa\u65bd<\/strong><\/h2>\n<p>\u5b9e\u65bd\u4ee5\u4e0b\u5b89\u5168\u914d\u7f6e\u6765\u4fdd\u62a4\u60a8\u7684\u670d\u52a1\u5668\uff1a<\/p>\n<pre><code># \u914d\u7f6e\u57fa\u672c iptables \u89c4\u5219\r\niptables -A INPUT -i lo -j ACCEPT\r\niptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT\r\niptables -A INPUT -p tcp --dport 22 -j ACCEPT\r\niptables -A INPUT -p tcp --dport 80 -j ACCEPT\r\niptables -A INPUT -p tcp --dport 443 -j ACCEPT\r\niptables -P INPUT DROP\r\n\r\n# \u4fdd\u5b58 iptables \u89c4\u5219\r\nservice iptables save<\/code><\/pre>\n<h2><strong>\u5b9e\u9645\u5b9e\u65bd\u573a\u666f<\/strong><\/h2>\n<h3>1. Web \u670d\u52a1\u5668\u79df\u7528\u8bbe\u7f6e<\/h3>\n<p>\u5bf9\u4e8e\u7f51\u7ad9\u670d\u52a1\u5668\u79df\u7528\u73af\u5883\uff0c\u8bf7\u8003\u8651\u4ee5\u4e0b\u9644\u52a0\u914d\u7f6e\uff1a<\/p>\n<pre><code># \u542f\u7528\u7aef\u53e3\u8f6c\u53d1\r\necho \"net.ipv4.ip_forward = 1\" >> \/etc\/sysctl.conf\r\nsysctl -p\r\n\r\n# \u914d\u7f6e\u865a\u62df\u4e3b\u673a\r\nvi \/etc\/httpd\/conf.d\/vhost.conf<\/code><\/pre>\n<h3>2. \u6570\u636e\u5e93\u670d\u52a1\u5668\u914d\u7f6e<\/h3>\n<p>\u5bf9\u4e8e\u6570\u636e\u5e93\u670d\u52a1\u5668\uff0c\u5b9e\u65bd\u4ee5\u4e0b\u7f51\u7edc\u4f18\u5316\uff1a<\/p>\n<pre><code># \u4f18\u5316\u7f51\u7edc\u7f13\u51b2\u533a\r\necho \"net.core.rmem_default = 262144\" >> \/etc\/sysctl.conf\r\necho \"net.core.wmem_default = 262144\" >> \/etc\/sysctl.conf\r\nsysctl -p<\/code><\/pre>\n<h2><strong>\u76d1\u63a7\u548c\u7ef4\u62a4<\/strong><\/h2>\n<p>\u5b9e\u65bd\u4ee5\u4e0b\u76d1\u63a7\u5b9e\u8df5\u4ee5\u786e\u4fdd\u7f51\u7edc\u7a33\u5b9a\u6027\uff1a<\/p>\n<pre><code># \u76d1\u63a7\u7f51\u7edc\u6d41\u91cf\r\niftop -i ens33\r\n\r\n# \u68c0\u67e5\u7f51\u7edc\u7edf\u8ba1\u4fe1\u606f\r\nnethogs ens33\r\n\r\n# \u76d1\u63a7\u8fde\u63a5\u72b6\u6001\r\nnetstat -tunapls<\/code><\/pre>\n<h2><strong>\u7ed3\u8bba<\/strong><\/h2>\n<p>\u6b63\u786e\u7684\u9759\u6001 IP 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