IT技术资讯Table of Contents
1、查看当前CentOS版本
[root@yingguo ~]# cat /etc/redhat-release CentOS release 6.10 (Final) [root@yingguo ~]#
2、更新源
[root@yingguo ~]# cat /etc/redhat-release CentOS release 6.10 (Final) [root@yingguo ~]# cat /etc/yum.repos.d/upgrade.repo [upgrade] name=upgrade baseurl=https://buildlogs.centos.org/centos/6/upg/x86_64/ enable=1 gpgcheck=0
3、卸载6.x自带的较新的助手，并安装老版[否则会报错]
yum erase openscap -y
[root@yingguo ~]# yum erase openscap Loaded plugins: aliases, changelog, fastestmirror, kabi, presto, refresh-packagekit, security, tmprepo, verify, versionlock Loading support for CentOS kernel ABI Setting up Remove Process Resolving Dependencies --> Running transaction check ---> Package openscap.x86_64 0:1.2.13-2.el6 will be erased --> Processing Dependency: libopenscap.so.8()(64bit) for package: openscap-scanner-1.2.13-2.el6.x86_64 --> Processing Dependency: openscap = 1.2.13-2.el6 for package: openscap-utils-1.2.13-2.el6.x86_64 --> Processing Dependency: openscap(x86-64) = 1.2.13-2.el6 for package: openscap-scanner-1.2.13-2.el6.x86_64 --> Running transaction check ---> Package openscap-scanner.x86_64 0:1.2.13-2.el6 will be erased --> Processing Dependency: openscap-scanner >= 1.0.10-2 for package: scap-security-guide-0.1.28-4.el6.noarch ---> Package openscap-utils.x86_64 0:1.2.13-2.el6 will be erased --> Running transaction check ---> Package scap-security-guide.noarch 0:0.1.28-4.el6 will be erased --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================================= Package Arch Version Repository Size ======================================================================================================================================================================= Removing: openscap x86_64 1.2.13-2.el6 @base 56 M Removing for dependencies: openscap-scanner x86_64 1.2.13-2.el6 @base 114 k openscap-utils x86_64 1.2.13-2.el6 @base 37 k scap-security-guide noarch 0.1.28-4.el6 @base 13 M Transaction Summary ======================================================================================================================================================================= Remove 4 Package(s) Installed size: 69 M Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Erasing : openscap-utils-1.2.13-2.el6.x86_64 1/4 Erasing : scap-security-guide-0.1.28-4.el6.noarch 2/4 Erasing : openscap-scanner-1.2.13-2.el6.x86_64 3/4 Erasing : openscap-1.2.13-2.el6.x86_64 4/4 Unable to connect to dbus Verifying : openscap-scanner-1.2.13-2.el6.x86_64 1/4 Verifying : openscap-1.2.13-2.el6.x86_64 2/4 Verifying : scap-security-guide-0.1.28-4.el6.noarch 3/4 Verifying : openscap-utils-1.2.13-2.el6.x86_64 4/4 Removed: openscap.x86_64 0:1.2.13-2.el6 Dependency Removed: openscap-scanner.x86_64 0:1.2.13-2.el6 openscap-utils.x86_64 0:1.2.13-2.el6 scap-security-guide.noarch 0:0.1.28-4.el6 Complete! [root@yingguo ~]#
yum install http://dev.centos.org/centos/6/upg/x86_64/Packages/openscap-1.0.8-1.0.1.el6.centos.x86_64.rpm -y
[root@yingguo ~]# yum install https://buildlogs.centos.org/centos/6/upg/x86_64/Packages/openscap-1.0.8-1.0.1.el6.centos.x86_64.rpm Loaded plugins: aliases, changelog, fastestmirror, kabi, presto, refresh-packagekit, security, tmprepo, verify, versionlock Loading support for CentOS kernel ABI Setting up Install Process openscap-1.0.8-1.0.1.el6.centos.x86_64.rpm | 2.9 MB 00:09 Examining /var/tmp/yum-root-Jy5Iqv/openscap-1.0.8-1.0.1.el6.centos.x86_64.rpm: openscap-1.0.8-1.0.1.el6.centos.x86_64 Marking /var/tmp/yum-root-Jy5Iqv/openscap-1.0.8-1.0.1.el6.centos.x86_64.rpm to be installed Loading mirror speeds from cached hostfile upgrade | 1.9 kB 00:00 upgrade/primary_db | 14 kB 00:00 Resolving Dependencies --> Running transaction check ---> Package openscap.x86_64 0:1.0.8-1.0.1.el6.centos will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================================= Package Arch Version Repository Size ======================================================================================================================================================================= Installing: openscap x86_64 1.0.8-1.0.1.el6.centos /openscap-1.0.8-1.0.1.el6.centos.x86_64 42 M Transaction Summary ======================================================================================================================================================================= Install 1 Package(s) Total size: 42 M Installed size: 42 M Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : openscap-1.0.8-1.0.1.el6.centos.x86_64 1/1 Unable to connect to dbus Verifying : openscap-1.0.8-1.0.1.el6.centos.x86_64 1/1 Installed: openscap.x86_64 0:1.0.8-1.0.1.el6.centos Complete! [root@yingguo ~]#
4、安装助手
yum install redhat-upgrade-tool preupgrade-assistant-contents -y
[root@yingguo ~]# yum install redhat-upgrade-tool preupgrade-assistant-contents Loaded plugins: aliases, changelog, fastestmirror, kabi, presto, refresh-packagekit, security, tmprepo, verify, versionlock Loading support for CentOS kernel ABI Setting up Install Process Loading mirror speeds from cached hostfile Resolving Dependencies --> Running transaction check ---> Package preupgrade-assistant-contents.noarch 0:0.5.14-1.el6.centos will be installed --> Processing Dependency: preupgrade-assistant(x86-64) >= 1.0.2-14 for package: preupgrade-assistant-contents-0.5.14-1.el6.centos.noarch ---> Package redhat-upgrade-tool.noarch 1:0.7.22-3.el6.centos will be installed --> Running transaction check ---> Package preupgrade-assistant.x86_64 0:1.0.2-36.0.1.el6.centos will be installed --> Finished Dependency Resolution Dependencies Resolved ======================================================================================================================================================================= Package Arch Version Repository Size ======================================================================================================================================================================= Installing: preupgrade-assistant-contents noarch 0.5.14-1.el6.centos upgrade 917 k redhat-upgrade-tool noarch 1:0.7.22-3.el6.centos upgrade 85 k Installing for dependencies: preupgrade-assistant x86_64 1.0.2-36.0.1.el6.centos upgrade 439 k Transaction Summary ======================================================================================================================================================================= Install 3 Package(s) Total download size: 1.4 M Installed size: 6.5 M Is this ok [y/N]: y Downloading Packages: Setting up and reading Presto delta metadata Processing delta metadata Package(s) data still to download: 1.4 M (1/3): preupgrade-assistant-1.0.2-36.0.1.el6.centos.x86_64.rpm | 439 kB 00:01 (2/3): preupgrade-assistant-contents-0.5.14-1.el6.centos.noarch.rpm | 917 kB 00:00 (3/3): redhat-upgrade-tool-0.7.22-3.el6.centos.noarch.rpm | 85 kB 00:00 ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 256 kB/s | 1.4 MB 00:05 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : preupgrade-assistant-1.0.2-36.0.1.el6.centos.x86_64 1/3 Installing : 1:redhat-upgrade-tool-0.7.22-3.el6.centos.noarch 2/3 Installing : preupgrade-assistant-contents-0.5.14-1.el6.centos.noarch 3/3 Unable to connect to dbus Verifying : preupgrade-assistant-1.0.2-36.0.1.el6.centos.x86_64 1/3 Verifying : 1:redhat-upgrade-tool-0.7.22-3.el6.centos.noarch 2/3 Verifying : preupgrade-assistant-contents-0.5.14-1.el6.centos.noarch 3/3 Installed: preupgrade-assistant-contents.noarch 0:0.5.14-1.el6.centos redhat-upgrade-tool.noarch 1:0.7.22-3.el6.centos Dependency Installed: preupgrade-assistant.x86_64 0:1.0.2-36.0.1.el6.centos Complete! [root@yingguo ~]# preupg -s CentOS6_7
5、检测版本升级的风险，如果控制台输出了错误信息，则需要查询下解决方案并解决
preupg -s CentOS6_7
[root@yingguo ~]# preupg -s CentOS6_7 Preupg tool doesn't do the actual upgrade. Please ensure you have backed up your system and/or data in the event of a failed upgrade that would require a full re-install of the system from installation media. Do you want to continue? y/n y Gathering logs used by preupgrade assistant: All installed packages : 01/11 ...finished (time 00:02s) All changed files : 02/11 ...finished (time 19:23s) Changed config files : 03/11 ...finished (time 00:00s) All users : 04/11 ...finished (time 00:00s) All groups : 05/11 ...finished (time 00:00s) Service statuses : 06/11 ...finished (time 00:00s) All installed files : 07/11 ...finished (time 00:09s) All local files : 08/11 ...finished (time 00:24s) All executable files : 09/11 ...finished (time 00:04s) RedHat signed packages : 10/11 ...finished (time 00:00s) CentOS signed packages : 11/11 ...finished (time 00:00s) Assessment of the system, running checks / SCE scripts: 001/096 ...done (Configuration Files to Review) 002/096 ...done (File Lists for Manual Migration) 003/096 ...done (Bacula Backup Software) 004/096 ...done (MySQL configuration) 005/096 ...done (Migration of the MySQL data stack) 006/096 ...done (Changes related to moving from MySQL to MariaDB) 007/096 ...done (PostgreSQL upgrade content) 008/096 ...done (GNOME Desktop Environment underwent several design modifications in CentOS 7 release) 009/096 ...done (KDE Desktop Environment underwent several design modifications in CentOS 7 release) 010/096 ...done (several graphic drivers not supported in CentOS 7) 011/096 ...done (several input drivers not supported in CentOS 7) 012/096 ...done (several kernel networking drivers not available in CentOS 7) 013/096 ...done (several kernel storage drivers not available in CentOS 7) 014/096 ...done (Names, Options and Output Format Changes in arptables) 015/096 ...done (BIND9 running in a chroot environment check.) 016/096 ...done (BIND9 configuration compatibility check) 017/096 ...done (Move dhcpd/dhcprelay arguments from /etc/sysconfig/* to *.service files) 018/096 ...done (DNSMASQ configuration compatibility check) 019/096 ...done (Dovecot configuration compatibility check) 020/096 ...done (Compatibility Between iptables and ip6tables) 021/096 ...done (Net-SNMP check) 022/096 ...done (Squid configuration compatibility check) 023/096 ...done (Reusable Configuration Files) 024/096 ...done (VCS repositories) 025/096 ...done (Added and extended options for BIND9 configuration) 026/096 ...done (Added options in DNSMASQ configuration) 027/096 ...done (Packages not signed by CentOS) 028/096 ...done (Obsoleted rpms) 029/096 ...done (w3m not available in CentOS 7) 030/096 ...done (report incompatibilities between CentOS 6 and 7 in qemu-guest-agent package) 031/096 ...done (Removed options in coreutils binaries) 032/096 ...done (Removed options in gawk binaries) 033/096 ...done (Removed options in netstat binary) 034/096 ...done (Removed options in quota tools) 035/096 ...done (Removed rpms) 036/096 ...done (Replaced rpms) 037/096 ...done (GMP library incompatibilities) 038/096 ...done (package downgrades) 039/096 ...done (restore custom selinux configuration) 040/096 ...done (General) 041/096 ...done (samba shared directories selinux) 042/096 ...done (CUPS Browsing/BrowsePoll configuration) 043/096 ...done (CVS Package Split) 044/096 ...done (FreeRADIUS Upgrade Verification) 045/096 ...done (httpd configuration compatibility check) 046/096 ...done (bind-dyndb-ldap) 047/096 ...done (Identity Management Server compatibility check) 048/096 ...done (IPA Server CA Verification) 049/096 ...done (NTP configuration) 050/096 ...done (Information on time-sync.target) 051/096 ...done (OpenLDAP /etc/sysconfig and data compatibility) 052/096 ...done (OpenSSH sshd_config migration content) 053/096 ...done (OpenSSH sysconfig migration content) 054/096 ...done (Configuration for quota_nld service) 055/096 ...done (Disk quota netlink message daemon moved into quota-nld package) 056/096 ...done (SSSD compatibility check) 057/096 ...done (Luks encrypted partition) 058/096 ...done (Clvmd and cmirrord daemon management.) 059/096 ...done (State of LVM2 services.) 060/096 ...done (device-mapper-multipath configuration compatibility check) 061/096 ...done (Removal of scsi-target-utils) 062/096 ...done (Configuration for warnquota tool) 063/096 ...done (Disk quota tool warnquota moved into quota-warnquota package) 064/096 ...done (Architecture Support) 065/096 ...done (Binary rebuilds) 066/096 ...done (Debuginfo packages) 067/096 ...done (Cluster and High Availability) 068/096 ...done (Quorum implementation) 069/096 ...done (fix krb5kdc config file) 070/096 ...done (File Systems, Partitions and Mounts Configuration Review) 071/096 ...done (Read Only FHS directories) 072/096 ...done (Sonamebumped libs) 073/096 ...done (SonameKept Reusable Dynamic Libraries) 074/096 ...done (Removed .so libs) 075/096 ...done (In-place Upgrade Requirements for the /usr/ Directory) 076/096 ...done (CA certificate bundles modified) 077/096 ...done (Developer Tool Set packages) 078/096 ...done (Hyper-V) 079/096 ...done (Content for enabling and disabling services based on CentOS 6 system) 080/096 ...done (Check for ethernet interface naming) 081/096 ...done (User modification in /etc/rc.local and /etc/rc.d/rc.local) 082/096 ...done (cgroups configuration compatibility check) 083/096 ...done (Plugable authentication modules (PAM)) 084/096 ...done (Foreign Perl modules) 085/096 ...done (Python 2.7.5) 086/096 ...done (Ruby 2.0.0) 087/096 ...done (SCL collections) 088/096 ...done (System kickstart) 089/096 ...done (YUM) 090/096 ...done (Check for usage of dangerous range of UID/GIDs) 091/096 ...done (Incorrect usage of reserved UID/GIDs) 092/096 ...done (NIS ypbind config files back-up) 093/096 ...done (NIS Makefile back-up) 094/096 ...done (NIS server maps check) 095/096 ...done (NIS server MAXUID and MAXGID limits check) 096/096 ...done (NIS server config file back-up) Assessment finished (time 15:25s) Result table with checks and their results for main contents: --------------------------------------------------------------------------------------------------------------- |several graphic drivers not supported in CentOS 7 |notapplicable | |several input drivers not supported in CentOS 7 |notapplicable | |w3m not available in CentOS 7 |notapplicable | |report incompatibilities between CentOS 6 and 7 in qemu-guest-agent package |notapplicable | |Identity Management Server compatibility check |notapplicable | |System kickstart |notapplicable | |NIS ypbind config files back-up |notapplicable | |NIS Makefile back-up |notapplicable | |NIS server maps check |notapplicable | |NIS server MAXUID and MAXGID limits check |notapplicable | |NIS server config file back-up |notapplicable | |Bacula Backup Software |pass | |Migration of the MySQL data stack |pass | |several kernel networking drivers not available in CentOS 7 |pass | |several kernel storage drivers not available in CentOS 7 |pass | |BIND9 configuration compatibility check |pass | |Move dhcpd/dhcprelay arguments from /etc/sysconfig/* to *.service files |pass | |DNSMASQ configuration compatibility check |pass | |Net-SNMP check |pass | |samba shared directories selinux |pass | |bind-dyndb-ldap |pass | |IPA Server CA Verification |pass | |Information on time-sync.target |pass | |OpenSSH sshd_config migration content |pass | |Configuration for quota_nld service |pass | |Disk quota netlink message daemon moved into quota-nld package |pass | |SSSD compatibility check |pass | |Luks encrypted partition |pass | |Clvmd and cmirrord daemon management. |pass | |Configuration for warnquota tool |pass | |Architecture Support |pass | |Debuginfo packages |pass | |Read Only FHS directories |pass | |In-place Upgrade Requirements for the /usr/ Directory |pass | |CA certificate bundles modified |pass | |Developer Tool Set packages |pass | |Hyper-V |pass | |Check for ethernet interface naming |pass | |Plugable authentication modules (PAM) |pass | |Ruby 2.0.0 |pass | |SCL collections |pass | |MySQL configuration |informational | |Changes related to moving from MySQL to MariaDB |informational | |Names, Options and Output Format Changes in arptables |informational | |Compatibility Between iptables and ip6tables |informational | |Squid configuration compatibility check |informational | |VCS repositories |informational | |Added and extended options for BIND9 configuration |informational | |Added options in DNSMASQ configuration |informational | |Removed options in coreutils binaries |informational | |Removed options in gawk binaries |informational | |Removed options in netstat binary |informational | |Removed options in quota tools |informational | |GMP library incompatibilities |informational | |CVS Package Split |informational | |NTP configuration |informational | |Disk quota tool warnquota moved into quota-warnquota package |informational | |File Systems, Partitions and Mounts Configuration Review |informational | |Sonamebumped libs |informational | |SonameKept Reusable Dynamic Libraries |informational | |Removed .so libs |informational | |Foreign Perl modules |informational | |YUM |informational | |Dovecot configuration compatibility check |fixed | |Reusable Configuration Files |fixed | |Replaced rpms |fixed | |package downgrades |fixed | |restore custom selinux configuration |fixed | |CUPS Browsing/BrowsePoll configuration |fixed | |OpenSSH sysconfig migration content |fixed | |State of LVM2 services. |fixed | |device-mapper-multipath configuration compatibility check |fixed | |fix krb5kdc config file |fixed | |Configuration Files to Review |needs_inspection | |File Lists for Manual Migration |needs_inspection | |PostgreSQL upgrade content |needs_inspection | |BIND9 running in a chroot environment check. |needs_inspection | |Obsoleted rpms |needs_inspection | |FreeRADIUS Upgrade Verification |needs_inspection | |httpd configuration compatibility check |needs_inspection | |OpenLDAP /etc/sysconfig and data compatibility |needs_inspection | |Removal of scsi-target-utils |needs_inspection | |Binary rebuilds |needs_inspection | |Python 2.7.5 |needs_inspection | |Check for usage of dangerous range of UID/GIDs |needs_inspection | |Incorrect usage of reserved UID/GIDs |needs_inspection | |Packages not signed by CentOS |needs_action | |Removed rpms |needs_action | |General |needs_action | |Quorum implementation |needs_action | |Content for enabling and disabling services based on CentOS 6 system |needs_action | |User modification in /etc/rc.local and /etc/rc.d/rc.local |needs_action | |cgroups configuration compatibility check |needs_action | |GNOME Desktop Environment underwent several design modifications in CentOS 7 release |fail | |KDE Desktop Environment underwent several design modifications in CentOS 7 release |fail | |Cluster and High Availability |fail | --------------------------------------------------------------------------------------------------------------- Tarball with results is stored here /root/preupgrade-results/preupg_results-210330111953.tar.gz . The latest assessment is stored in directory /root/preupgrade . Summary information: We found some critical issues. In-place upgrade is not advised. Read the file /root/preupgrade/result.html for more details. Upload results to UI by command: e.g. preupg -u http://127.0.0.1:8099/submit/ -r /root/preupgrade-results/preupg_results-*.tar.gz .
6、导入CentOS7的key
rpm –import http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-7
7、开始升级
centos-upgrade-tool-cli –network 7 –instrepo=http://vault.centos.org/centos/7.2.1511/os/x86_64/
8、更新完后，重启服务器
reboot
admin 5年前 (2020-05-08)说：
selboo 5年前 (2020-03-22)说：
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