{"id":26396,"date":"2023-04-05T23:52:44","date_gmt":"2023-12-18T06:24:06","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e8%af%95%e7%9d%80%e4%bd%bf%e7%94%a8%e5%8d%87%e7%ba%a7%e5%b7%a5%e5%85%b7%e5%b0%86centos-6-5%e5%8d%87%e7%ba%a7%e5%88%b0centos-7%e3%80%82\/"},"modified":"2025-08-11T21:00:04","modified_gmt":"2025-08-11T13:00:04","slug":"%e6%88%91%e8%af%95%e7%9d%80%e4%bd%bf%e7%94%a8%e5%8d%87%e7%ba%a7%e5%b7%a5%e5%85%b7%e5%b0%86centos-6-5%e5%8d%87%e7%ba%a7%e5%88%b0centos-7%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%88%91%e8%af%95%e7%9d%80%e4%bd%bf%e7%94%a8%e5%8d%87%e7%ba%a7%e5%b7%a5%e5%85%b7%e5%b0%86centos-6-5%e5%8d%87%e7%ba%a7%e5%88%b0centos-7%e3%80%82\/","title":{"rendered":"\u6211\u8bd5\u7740\u4f7f\u7528\u5347\u7ea7\u5de5\u5177\u5c06CentOS 6.5\u5347\u7ea7\u5230CentOS 7"},"content":{"rendered":"<h1>\u80cc\u666fCentOS 6\u7684\u652f\u6301\u5df2\u4e8e2020\u5e7411\u670830\u65e5\u7ed3\u675f\u3002\u7531\u4e8e\u6b63\u5728\u8fd0\u884c\u7684\u9879\u76ee\u9700\u8981\u5347\u7ea7\u7248\u672c\uff0c\u56e0\u6b64\u6211\u5c1d\u8bd5\u4e86\u4e00\u4e2a\u540d\u4e3aCentOS Upgrade Tool\u7684\u5de5\u5177\u3002<\/p>\n<h1>\u8bf7\u6ce8\u610f\uff01\u5982\u679c\u60a8\u4ece\u4e0a\u8ff0\u94fe\u63a5\u8df3\u8f6c\u8fc7\u53bb\uff0c\u60a8\u4f1a\u53d1\u73b0&#8230;<br \/>\n\u4e0a\u9762\u6807\u6709\u201c\u76ee\u524d\u65e0\u6cd5\u4f7f\u7528\u201d\u3002<\/p>\n<p>\u4f3c\u4e4e\u5728CentOS 6.7\u4ee5\u4e0a\u7684\u60c5\u51b5\u4e0b\uff0c\u6709\u4e9b\u8f6f\u4ef6\u5305\u7684\u7248\u672c\u6bd4CentOS 7\u7684\u540c\u4e00\u8f6f\u4ef6\u5305\u66f4\u9ad8\uff0c\u5bfc\u81f4\u65e0\u6cd5\u6b63\u5e38\u66f4\u65b0\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6709\u673a\u4f1a\u5c1d\u8bd5\uff0c\u8bf7\u6ce8\u610f&#8230;<\/p>\n<p>\u5f53\u7136\u7684\u505a\u6cd5\u662f\u5728\u65b0\u5efa\u7684CentOS 7\uff088\u55ce\u3002\u3002\u3002\u6211\u5011\u5148\u4fdd\u7559\uff09\u4e0a\u5275\u5efa\u4e00\u500b\u670d\u52d9\u5668\uff0c\u4e26\u6dfb\u52a0\u6240\u9700\u7684\u8edf\u4ef6\u5305\uff0c\u7136\u5f8c\u9032\u884c\u6578\u64da\u9077\u79fb\u3002<br \/>\n\u53ea\u662f\uff0c\u7531\u65bc\u9810\u7b97\u548c\u6642\u9593\u8868\u7b49\u6210\u5e74\u4eba\u7684\u60c5\u6cc1\uff08\uff1f\uff09\uff0c\u5982\u679c\u9700\u8981\u5728\u540c\u4e00\u500b\u670d\u52d9\u5668\u4e0a\u9032\u884c\u5347\u7d1a\uff0c\u90a3\u9ebc\u6211\u5011\u61c9\u8a72\u77e5\u9053\u6709\u4e00\u500b\u7a31\u70ba\u5347\u7d1a\u5de5\u5177\u7684\u5b58\u5728\u3002\u8fd9\u4e5f\u662f\u4e00\u4e2a\u597d\u4e3b\u610f\u3002<\/p>\n<h1>\u5347\u7ea7\u7684\u8fc7\u7a0b<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u5b89\u88c5\u5347\u7ea7\u5de5\u5177<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u6267\u884c\u5347\u7ea7\u9a8c\u8bc1\u5de5\u5177<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u786e\u8ba4\u548c\u5904\u7406\u9a8c\u8bc1\u7ed3\u679c<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u6267\u884c\u5347\u7ea7\u5de5\u5177<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\u91cd\u65b0\u542f\u52a8CentOS<\/ol>\n<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<ol>\u786e\u8ba4\u7248\u672c\u5347\u7ea7<\/ol>\n<h1>\u5347\u7ea7\u5427\uff01\u6211\u4eec\u5c06\u6309\u7167\u4e0a\u8ff0\u6d41\u7a0b\u7ee7\u7eed\u8fdb\u884c\u5de5\u4f5c\uff01\u5728\u5f00\u59cb\u5de5\u4f5c\u524d\uff0c\u8bf7\u4e0d\u8981\u5fd8\u8bb0\u5907\u4efd&#8230;<\/p>\n<h2>1. \u5b89\u88c5\u5347\u7ea7\u5de5\u5177\u5c06\u5347\u7ea7\u5de5\u5177\u7684\u5b58\u50a8\u5e93\u6dfb\u52a0\u5230 yum.repos.d \u4ee5\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code># vi \/etc\/yum.repos.d\/upgradetool.repo\r\n\r\n\uff08\u65b0\u898f\u4f5c\u6210\uff09\r\n[upg]\r\nname=CentOS-$releasever - Upgrade Tool\r\nbaseurl=https:\/\/buildlogs.centos.org\/centos\/6\/upg\/x86_64\/\r\ngpgcheck=1\r\nenabled=1\r\ngpgkey=file:\/\/\/etc\/pki\/rpm-gpg\/RPM-GPG-KEY-CentOS-6\r\n<\/code><\/pre>\n<p>\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code># yum install redhat-upgrade-tool preupgrade-assistant-contents\r\nLoaded plugins: fastestmirror, presto\r\nDetermining fastest mirrors\r\nYumRepo Error: All mirror URLs are not using ftp, http[s] or file.\r\n Eg. Invalid release\/repo\/arch combination\/\r\nremoving mirrorlist with no valid mirrors: \/var\/cache\/yum\/x86_64\/6\/base\/mirrorlist.txt\r\nError: Cannot find a valid baseurl for repo: base\r\n<\/code><\/pre>\n<p>\u9519\u8bef&#8230;<br \/>\n\u7531\u4e8eCentOS 6\u57282020\u5e7411\u670830\u65e5\u505c\u6b62\u652f\u6301\uff0c\u56e0\u6b64\u4ece\u955c\u50cf\u5217\u8868\u4e2d\u5220\u9664\u4e86\u8be5\u670d\u52a1\u5668\u3002<br \/>\n\u8bf7\u6ce8\u91ca\u6389\u4ee5\u4e0b\u914d\u7f6e\u4e2d\u7684mirrorlist\u884c\uff0c\u5e76\u6dfb\u52a0baseurl\u3002<br \/>\n\uff08\u5fc5\u8981\u65f6\u4e5f\u53ef\u4ee5\u66f4\u6539[updates]\u548c[extras]\u7684\u914d\u7f6e\u3002\uff09<\/p>\n<pre class=\"post-pre\"><code># cp -p \/etc\/yum.repos.d\/CentOS-Base.repo \/etc\/yum.repos.d\/CentOS-Base.repo.bu\r\n\r\n# vi \/etc\/yum.repos.d\/CentOS-Base.repo\r\n\r\n[base]\r\nname=CentOS-$releasever - Base\r\n#mirrorlist=http:\/\/mirrorlist.centos.org\/?release=$releasever&amp;arch=$basearch&amp;repo=os \uff08\u203b\u2190\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\uff09\r\n#baseurl=http:\/\/mirror.centos.org\/centos\/$releasever\/os\/$basearch\/\r\ngpgcheck=1\r\ngpgkey=file:\/\/\/etc\/pki\/rpm-gpg\/RPM-GPG-KEY-CentOS-6\r\nbaseurl=http:\/\/vault.centos.org\/6.5\/os\/$basearch\/ \uff08\u203b\u2190\u8ffd\u52a0\uff09\r\n<\/code><\/pre>\n<p>\u91cd\u65b0\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code># yum install redhat-upgrade-tool preupgrade-assistant-contents\r\nLoaded plugins: fastestmirror, presto\r\nDetermining fastest mirrors\r\nbase                                         | 3.7 kB     00:00\r\nNot using downloaded repomd.xml because it is older than what we have:\r\n  Current   : Fri Oct 24 22:59:03 2014\r\n  Downloaded: Thu Nov 28 07:08:25 2013\r\nextras                                       | 2.9 kB     00:00\r\nNot using downloaded repomd.xml because it is older than what we have:\r\n  Current   : Thu May 21 00:34:00 2015\r\n  Downloaded: Fri Nov  7 01:15:00 2014\r\nupdates                                      | 2.9 kB     00:00\r\nNot using downloaded repomd.xml because it is older than what we have:\r\n  Current   : Thu Jul  2 21:22:31 2015\r\n  Downloaded: Fri Nov  7 01:20:59 2014\r\n\r\n\uff08\u9014\u4e2d\u306f\u7701\u7565\u3002\u3002\u3002\uff09\r\n\r\nError Downloading Packages:\r\n  libxml2-2.7.6-17.el6_6.1.x86_64: failure: Packages\/libxml2-2.7.6-17.el6_6.1.x86_64.rpm from updates: [Errno 256] No more mirrors to try.\r\n  openscap-1.0.8-1.0.1.el6.centos.1.x86_64: failure: Packages\/openscap-1.0.8-1.0.1.el6.centos.1.x86_64.rpm from base: [Errno 256] No more mirrors to try.\r\n  yum-3.2.29-60.el6.centos.noarch: failure: Packages\/yum-3.2.29-60.el6.centos.noarch.rpm from base: [Errno 256] No more mirrors to try.\r\n  libxml2-devel-2.7.6-17.el6_6.1.x86_64: failure: Packages\/libxml2-devel-2.7.6-17.el6_6.1.x86_64.rpm from updates: [Errno 256] No more mirrors to try.\r\n<\/code><\/pre>\n<p>\u53c8\u51fa\u9519\u4e86&#8230;<br \/>\n\u597d\u50cf\u5f53\u6211\u67e5\u770b\u4ed3\u5e93\u65f6\uff0c\u4e0b\u8f7d\u7684\u6700\u65b0\u7248\u672c\u88ab\u8ba4\u4e3a\u662f\u65e7\u7684\u3002<\/p>\n<p>\u6211\u4f1a\u5907\u4efd\u5f53\u524d\u5b58\u50a8\u7684 yum \u7f13\u5b58\u3002<\/p>\n<pre class=\"post-pre\"><code># mv \/var\/cache\/yum\/x86_64 \/tmp\/\r\n<\/code><\/pre>\n<p>\u6211\u5c06\u518d\u6b21\u91cd\u65b0\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code># yum install redhat-upgrade-tool preupgrade-assistant-contents\r\nLoaded plugins: fastestmirror, presto\r\nDetermining fastest mirrors\r\nbase                              | 3.7 kB     00:00\r\nbase\/primary_db                   | 4.4 MB     00:03\r\nextras                            | 2.9 kB     00:00\r\nextras\/primary_db                 |  19 kB     00:00\r\nupdates                           | 2.9 kB     00:00\r\nupdates\/primary_db                | 5.9 MB     00:03\r\nupg                               | 1.9 kB     00:00\r\nupg\/primary_db                    |  14 kB     00:00\r\n\r\n\uff08\u9014\u4e2d\u306f\u7701\u7565\u3002\u3002\u3002\uff09\r\n\r\nInstalled:\r\n  preupgrade-assistant-contents.noarch 0:0.5.14-1.el6.centos                                                                 redhat-upgrade-tool.noarch 1:0.7.22-3.el6.centos\r\n\r\nDependency Installed:\r\n  libgcrypt-devel.x86_64 0:1.4.5-11.el6_4         libgpg-error-devel.x86_64 0:1.7-4.el6      libxml2-devel.x86_64 0:2.7.6-14.el6_5.2                    libxslt.x86_64 0:1.1.26-2.el6_3.1      libxslt-devel.x86_64 0:1.1.26-2.el6_3.1\r\n  openscap.x86_64 0:1.0.8-1.0.1.el6.centos.1      pcre-devel.x86_64 0:7.8-6.el6              preupgrade-assistant.x86_64 0:1.0.2-36.0.1.el6.centos      zlib-devel.x86_64 0:1.2.3-29.el6\r\n\r\nDependency Updated:\r\n  libxml2.x86_64 0:2.7.6-14.el6_5.2                                                                                     yum.noarch 0:3.2.29-43.el6.centos\r\n\r\nComplete!\r\n<\/code><\/pre>\n<p>\u5927\u529f\u544a\u6210\uff01<\/p>\n<h2>2. \u8fd0\u884c\u5347\u7ea7\u9a8c\u8bc1\u5de5\u5177<br \/>\n\u6267\u884c\u5347\u7ea7\u9a8c\u8bc1\u5de5\u5177\u3002<\/p>\n<pre class=\"post-pre\"><code># preupg -s CentOS6_7\r\nPreupg tool doesn't do the actual upgrade.\r\nPlease ensure you have backed up your system and\/or data in the event of a failed upgrade\r\n that would require a full re-install of the system from installation media.\r\nDo you want to continue? y\/n\r\ny\r\nGathering logs used by preupgrade assistant:\r\n\r\n\uff08\u9014\u4e2d\u306f\u7701\u7565\u3002\u3002\u3002\uff09\r\n\r\nTarball with results is stored here \/root\/preupgrade-results\/preupg_results-201214042319.tar.gz .\r\nThe latest assessment is stored in directory \/root\/preupgrade .\r\nSummary information:\r\nWe found some potential in-place upgrade risks.\r\nRead the file \/root\/preupgrade\/result.html for more details.\r\nUpload results to UI by command:\r\ne.g. preupg -u http:\/\/127.0.0.1:8099\/submit\/ -r \/root\/preupgrade-results\/preupg_results-*.tar.gz .\r\n<\/code><\/pre>\n<p>\u4e00\u5207\u95ee\u9898\u90fd\u6ca1\u6709\uff0c\u987a\u5229\u5b8c\u6210\uff01<\/p>\n<h2>3. \u786e\u8ba4\u548c\u5904\u7406\u9a8c\u8bc1\u7ed3\u679c\u6211\u4f1a\u786e\u8ba4\u691c\u8a3c\u7d50\u679c\u662f\u5426\u5df2\u8f93\u51fa\u5230 \/root\/preupgrade\/result.html\uff0c\u5e76\u6309\u8981\u6c42\u9605\u8bfb\u3002<\/p>\n<pre class=\"post-pre\"><code>We have detected that you are using SELinux.\r\nThere were changes in policies which require to apply custom command before upgrade process.\r\nIn order to have working SELinux on CentOS 7, you &lt;b&gt;HAVE TO&lt;\/b&gt; run command prior to running redhat-upgrade-tool:semodule -r sandbox\r\n<\/code><\/pre>\n<p>\u8bf7\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u4ee5\u6267\u884c\u5347\u7ea7\u3002<\/p>\n<pre class=\"post-pre\"><code># semodule -r sandbox\r\n<\/code><\/pre>\n<h2>\u6267\u884c\u5347\u7ea7\u5de5\u5177\u5728\u8fd9\u4e00\u6b65\uff0c\u6211\u4eec\u5df2\u7ecf\u51c6\u5907\u597d\u8fdb\u884c\u5347\u7ea7\u4e86\u3002<br \/>\n\u73b0\u5728\u5f00\u59cb\u6267\u884c\u5347\u7ea7\u3002<\/p>\n<pre class=\"post-pre\"><code># redhat-upgrade-tool-cli --network 7 --cleanup-post --instrepo=http:\/\/vault.centos.org\/centos\/7.2.1511\/os\/x86_64\/ --addrepo=CentOS7=http:\/\/mirror.centos.org\/centos\/7\/os\/x86_64\/\r\nsetting up repos...\r\nCentOS7                                                 | 3.6 kB     00:00\r\nCentOS7\/primary_db                                      | 6.1 MB     00:00\r\nbase                                                    | 3.7 kB     00:00\r\nbase\/primary_db                                         | 4.4 MB     00:03\r\ncmdline-instrepo                                        | 3.6 kB     00:00\r\ncmdline-instrepo\/primary_db                             | 5.3 MB     00:03\r\nextras                                                  | 2.9 kB     00:00\r\nextras\/primary_db                                       |  19 kB     00:00\r\nupdates                                                 | 2.9 kB     00:00\r\nupdates\/primary_db                                      | 5.9 MB     00:03\r\nupg                                                     | 1.9 kB     00:00\r\nupg\/primary_db                                          |  14 kB     00:00\r\nzabbix                                                  |  951 B     00:00\r\nzabbix\/primary                                          |  25 kB     00:00\r\nzabbix-non-supported                                    |  951 B     00:00\r\nzabbix-non-supported\/primary                            | 3.8 kB     00:00\r\n.treeinfo                                               | 1.1 kB     00:00\r\nPreupgrade assistant risk check found risks for this upgrade.\r\nYou can run preupg --riskcheck --verbose to view these risks.\r\nAddressing high risk issues is required before the in-place upgrade\r\nand ignoring these risks may result in a broken upgrade and unsupported upgrade.\r\nPlease backup your data.\r\n\r\n\uff08\u9014\u4e2d\u306f\u7701\u7565\u3002\u3002\u3002\uff09\r\n\r\ntesting upgrade transaction\r\nrpm transaction 100% [========================================================]\r\nrpm install 100% [========================================================]\r\nsetting up system for upgrade\r\nFinished. Reboot to start upgrade.\r\n<\/code><\/pre>\n<p>\u80dc\u5229\uff01\uff01\uff01\uff01\uff01\uff01<\/p>\n<h2>5. CentOS\u7684\u91cd\u65b0\u542f\u52a8\u4e3a\u4e86\u5e94\u7528CentOS 7\uff0c\u6211\u4eec\u5c06\u91cd\u65b0\u542f\u52a8\u3002<br \/>\n\u4f46\u662f\uff0c\u91cd\u65b0\u542f\u52a8\u540e\u7684CentOS 7\u4f7f\u7528systemctl\u800c\u4e0d\u662fservice\u6765\u542f\u52a8\u8fdb\u7a0b\uff0c\u6240\u4ee5sshd\u65e0\u6cd5\u542f\u52a8\u3002<br \/>\n\u6211\u4eec\u5c06\u5728\u91cd\u65b0\u542f\u52a8\u540e\u914d\u7f6esshd\u4ee5\u4f7f\u5176\u542f\u52a8\u3002<\/p>\n<pre class=\"post-pre\"><code># vi \/etc\/rc.d\/rc.local\r\n\r\n\uff08\u6700\u5f8c\u306b\u8ffd\u52a0\uff09\r\nsystemctl enable sshd &amp;&amp; systemctl start sshd.service\r\n\r\n# chmod +x \/etc\/rc.d\/rc.local\r\n<\/code><\/pre>\n<p>\u91cd\u65b0\u542f\u52a8\uff01<\/p>\n<pre class=\"post-pre\"><code># reboot\r\n\r\nBroadcast message from hoge\r\n    (\/dev\/pts\/0) at 14:31 ...\r\n\r\nThe system is going down for reboot NOW!\r\n<\/code><\/pre>\n<h2>6. \u786e\u8ba4\u5347\u7ea7\u5f53\u60a8\u91cd\u65b0\u542f\u52a8\u540e\uff0c\u6211\u4eec\u5c06\u786e\u8ba4CentOS\u7684\u7248\u672c\u3002<\/p>\n<pre class=\"post-pre\"><code>$ cat \/etc\/redhat-release\r\nCentOS Linux release 7.9.2009 (Core)\r\n<\/code><\/pre>\n<p>\u786e\u5b9e\u662f CentOS 7 \u4e86\uff01\uff01<\/p>\n<h1>&#8220;\u7292\u52b3&#8221;\u4ece\u8fd9\u91cc\u5f00\u59cb\uff0c\u5c06\u8fdb\u5165\u9879\u76ee\u7279\u5b9a\u7684\u8ba8\u8bba\u3002\u5982\u679c\u6709\u4efb\u4f55\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u8bf7\u968f\u610f\u63d0\u51fa\u3002<\/p>\n<h2>\u8c03\u6574\u65f6\u533a\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u65f6\u533a\u8bbe\u7f6e\u4e3aUTC\uff08\u534f\u8c03\u4e16\u754c\u65f6\uff09\uff0c\u56e0\u6b64\u6211\u5c06\u5176\u66f4\u6539\u4e3aJST\uff08\u65e5\u672c\u6807\u51c6\u65f6\u95f4\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code># timedatectl set-timezone Asia\/Tokyo\r\n# date\r\n2020\u5e74 12\u6708 14\u65e5 \u6708\u66dc\u65e5 14:38:04 JST\r\n<\/code><\/pre>\n<h2>Zabbix\u4ee3\u7406\u81ea\u52a8\u542f\u52a8\u3002\u5347\u7ea7\u540e\uff0c\u81ea\u52a8\u542f\u52a8\u7684zabbix-agent\u505c\u6b62\u4e86\u81ea\u52a8\u542f\u52a8\u3002<br \/>\n\u5728\u542f\u52a8\u65f6\u4f3c\u4e4e\u6ca1\u6709\u5728\/var\/run\/\u76ee\u5f55\u4e0b\u521b\u5efazabbix\u6587\u4ef6\u5939\u3002<br \/>\n\u6211\u5df2\u7ecf\u8bbe\u7f6e\u4e86\u5728\u542f\u52a8\u65f6\u81ea\u52a8\u521b\u5efa\/var\/run\/zabbix\u6587\u4ef6\u5939\u3002<\/p>\n<pre class=\"post-pre\"><code>vi \/etc\/tmpfiles.d\/zabbix.conf\r\n\r\n\uff08\u65b0\u898f\u8ffd\u52a0\uff09\r\n#Type   Path                      Mode    UID       GID     Age  Argument\r\nd       \/var\/run\/zabbix           0755    zabbix    zabbix  -\r\n<\/code><\/pre>\n<h2>NTP\u7684\u65f6\u95f4\u540c\u6b65<br \/>\n\u5347\u7ea7\u540e\uff0c\u81ea\u52a8\u542f\u52a8\u7684NTP\u670d\u52a1\u65e0\u6cd5\u8fdb\u884c\u4e0e\u5176\u4ed6\u670d\u52a1\u5668\u7684\u65f6\u95f4\u540c\u6b65\u5904\u7406\u3002<br \/>\n\u5728\u624b\u52a8\u505c\u6b62\/\u542f\u52a8NTP\u670d\u52a1\u7684\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u8fdb\u884c\u540c\u6b65\u3002<\/p>\n<p>\u67e5\u770bNTP\u670d\u52a1\u542f\u52a8\u65f6\u7684\u65e5\u5fd7\u3002<\/p>\n<pre class=\"post-pre\"><code>\u25a0\u81ea\u52d5\u8d77\u52d5\u6642\r\n12 Oct 07:43:11 ntpd[332]: Listen and drop on 0 v4wildcard 0.0.0.0 UDP 123\r\n12 Oct 07:43:11 ntpd[332]: Listen and drop on 1 v6wildcard :: UDP 123\r\n12 Oct 07:43:11 ntpd[332]: Listen normally on 2 lo 127.0.0.1 UDP 123\r\n12 Oct 07:43:11 ntpd[332]: Listen normally on 3 lo ::1 UDP 123\r\n12 Oct 07:43:11 ntpd[332]: Listening on routing socket on fd #20 for interface updates\r\n12 Oct 07:43:11 ntpd[332]: Deferring DNS for mta01 1\r\n12 Oct 07:43:11 ntpd[332]: Deferring DNS for mta02 1\r\n12 Oct 07:43:11 ntpd[332]: 0.0.0.0 c016 06 restart\r\n12 Oct 07:43:11 ntpd[332]: 0.0.0.0 c012 02 freq_set ntpd 31.109 PPM\r\n12 Oct 07:43:11 ntpd[338]: signal_no_reset: signal 17 had flags 4000000\r\n12 Oct 07:43:13 ntpd[338]: host name not found: mta01\r\n12 Oct 07:43:13 ntpd[338]: host name not found: mta02\r\n12 Oct 07:43:17 ntpd[332]: Listen normally on 4 eth0 10.0.xxx.xxx UDP 123\r\n12 Oct 07:43:17 ntpd[332]: Listen normally on 5 eth0 fe80::4d2:72ff:fede:783b UDP 123\r\n12 Oct 07:43:17 ntpd[332]: new interface(s) found: waking up resolver\r\n\r\n\u25a0\u624b\u52d5\u8d77\u52d5\u6642\r\n12 Oct 10:00:15 ntpd[2777]: Listen and drop on 0 v4wildcard 0.0.0.0 UDP 123\r\n12 Oct 10:00:15 ntpd[2777]: Listen and drop on 1 v6wildcard :: UDP 123\r\n12 Oct 10:00:15 ntpd[2777]: Listen normally on 2 lo 127.0.0.1 UDP 123\r\n12 Oct 10:00:15 ntpd[2777]: Listen normally on 3 eth0 10.0.xxx.xxx UDP 123\r\n12 Oct 10:00:15 ntpd[2777]: Listen normally on 4 lo ::1 UDP 123\r\n12 Oct 10:00:15 ntpd[2777]: Listen normally on 5 eth0 fe80::4d2:72ff:fede:783b UDP 123\r\n12 Oct 10:00:15 ntpd[2777]: Listening on routing socket on fd #22 for interface updates\r\n<\/code><\/pre>\n<p>\u55ef\u3002\u3002\u3002<br \/>\n\u7531\u4e8e\u81ea\u52a8\u542f\u52a8\u65f6\u8f93\u51fa&#8221;Deferring DNS for mta01&#8243;\uff0c\u770b\u8d77\u6765\u540c\u6b65\u76ee\u6807\u670d\u52a1\u5668\u4e0d\u53ef\u89c1\u3002<\/p>\n<p>\u4f3c\u4e4e\u5728\u81ea\u52a8\u542f\u52a8\u65f6\uff0ceth0 \u7684\u8bc6\u522b\u7a0d\u5fae\u6709\u70b9\u5ef6\u8fdf\u3002\u8fd9\u53ef\u80fd\u662f\u539f\u56e0\u5417\uff1f<\/p>\n<p>\u8ba9\u6211\u4eec\u67e5\u770b \/usr\/lib\/systemd\/system\/ntpd.service \u7684\u8bbe\u7f6e\u3002<\/p>\n<pre class=\"post-pre\"><code># vi \/usr\/lib\/systemd\/system\/ntpd.service\r\n[Unit]\r\nDescription=Network Time Service\r\nAfter=syslog.target ntpdate.service sntp.service\r\n\r\n[Service]\r\nType=forking\r\nEnvironmentFile=-\/etc\/sysconfig\/ntpd\r\nExecStart=\/usr\/sbin\/ntpd -u ntp:ntp $OPTIONS\r\nPrivateTmp=true\r\n\r\n[Install]\r\nWantedBy=multi-user.target\r\n<\/code><\/pre>\n<p>\u5728[Unit]\u7684After\u914d\u7f6e\u4e2d\u6dfb\u52a0network.target\u3002<\/p>\n<pre class=\"post-pre\"><code># vi \/usr\/lib\/systemd\/system\/ntpd.service\r\n[Unit]\r\nDescription=Network Time Service\r\nAfter=syslog.target network.target ntpdate.service sntp.service\r\n                           \u2191\uff08\u8ffd\u52a0\uff09\r\n\r\n[Service]\r\nType=forking\r\nEnvironmentFile=-\/etc\/sysconfig\/ntpd\r\nExecStart=\/usr\/sbin\/ntpd -u ntp:ntp $OPTIONS\r\nPrivateTmp=true\r\n\r\n[Install]\r\nWantedBy=multi-user.target\r\n<\/code><\/pre>\n<p>\u66f4\u65b0\u66f4\u6539\u3002<\/p>\n<pre class=\"post-pre\"><code># systemctl daemon-reload\r\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u5728\u81ea\u52a8\u542f\u52a8\u65f6\uff0c\u65f6\u95f4\u540c\u6b65\u5904\u7406\u53ef\u4ee5\u6b63\u5e38\u6267\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>14 Oct 18:31:40 ntpd[583]: ntp_io: estimated max descriptors: 1024, initial socket boundary: 16\r\n14 Oct 18:31:40 ntpd[583]: Listen and drop on 0 v4wildcard 0.0.0.0 UDP 123\r\n14 Oct 18:31:40 ntpd[583]: Listen and drop on 1 v6wildcard :: UDP 123\r\n14 Oct 18:31:40 ntpd[583]: Listen normally on 2 lo 127.0.0.1 UDP 123\r\n14 Oct 18:31:40 ntpd[583]: Listen normally on 3 eth0 10.0.111.115 UDP 123\r\n14 Oct 18:31:40 ntpd[583]: Listening on routing socket on fd #20 for interface updates\r\n<\/code><\/pre>\n<p>\u7ed3\u675f\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u80cc\u666fCentOS 6\u7684\u652f\u6301\u5df2\u4e8e2020\u5e7411\u670830\u65e5\u7ed3\u675f\u3002\u7531\u4e8e\u6b63\u5728\u8fd0\u884c\u7684\u9879\u76ee\u9700\u8981\u5347\u7ea7\u7248\u672c\uff0c\u56e0\u6b64\u6211\u5c1d\u8bd5\u4e86\u4e00\u4e2a\u540d\u4e3a [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-26396","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO 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