ارتقا CentOS 6 به CentOS 7 ( شاپ وی پی اس)

[nazarkhani]

این آموزش نحوه ارتقا CentOS 6 به CentOS 7 به صورت انلاین است و تست شده می باشد.

centos

در تست ما از centos 6.5 به همراه پنل دایرکت ادمین استفاده شده، برای این کار ابتدا مخرن centos ویرایش می کنید:

nano /etc/yum.repos.d/upgrade.repo

1	nano /etc/yum.repos.d/upgrade.repo

سپس کد ها زیر داخل ان قرار می دهید

[upgrade] name=upgrade baseurl=http://dev.centos.org/centos/6/upg/x86_64/ enabled=1 gpgcheck=0

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[upgrade] name=upgrade baseurl=http://dev.centos.org/centos/6/upg/x86_64/ enabled=1 gpgcheck=0

نصب بسته های مورد نیاز با yum جهت ارتقا :
yum -y install preupgrade-assistant-contents redhat-upgrade-tool preupgrade-assistant

1	yum -y install preupgrade-assistant-contents redhat-upgrade-tool preupgrade-assistant

حال دستور زیر اجرا و خروجی ببینید:
preupg

1

preupg

خروجی باید چیزی شبیه به این باشد:
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 22:04s) 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 00:02s) All local files : 08/11 ...finished (time 05:08s) All executable files : 09/11 ...finished (time 00:02s) 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: 001/095 ...done (Configuration Files to Review) --[CUT]-- List of all packages and services --[/CUT]-- 095/095 ...done (NIS server config file back-up) Assessment finished (time 11:55s) Result table with checks and their results for main contents: ---------------------------------------------------------------------------------- |Bacula Backup Software |notapplicable | |PostgreSQL upgrade content |notapplicable | | --[CUT]-- Lot's of not applicable packages --[/CUT]-- | |several kernel networking drivers not available in CentOS 7 |pass | |several kernel storage drivers not available in CentOS 7 |pass | |MySQL configuration |informational | |Migration of the MySQL data stack |informational | |Compatibility Between iptables and ip6tables |informational | |Net-SNMP check |informational | |VCS repositories |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 | |GMP library incompatibilities |informational | |CVS Package Split |informational | |NTP configuration |informational | |Information on time-sync.target |informational | |File Systems, Partitions and Mounts Configuration Review |informational | |SonameKept Reusable Dynamic Libraries |informational | |Content for enabling and disabling services (...) |informational | |YUM |informational | |Reusable Configuration Files |fixed | |Replaced rpms |fixed | |package downgrades |fixed | |OpenSSH sysconfig migration content |fixed | |State of LVM2 services. |fixed | |Configuration Files to Review |needs_inspection | |File Lists for Manual Migration |needs_inspection | |Obsoleted rpms |needs_inspection | |Binary rebuilds |needs_inspection | |Foreign Perl modules |needs_inspection | |Check for usage of dangerous range of UID/GIDs |needs_inspection | |Packages not signed by CentOS |needs_action | |Removed rpms |needs_action | |General |needs_action | |Sonamebumped libs |needs_action | |Removed .so libs |needs_action | |User modification in /etc/rc.local and /etc/rc.d/rc.local |needs_action | ---------------------------------------------------------------------------------- Tarball with results is stored here /root/preupgrade-results/preupg_results-140801172528.tar.gz . The latest assessment is stored in directory /root/preupgrade . Summary information: We found some potential in-place upgrade risks. 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 .

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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 22:04s) 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 00:02s) All local files : 08/11 ...finished (time 05:08s) All executable files : 09/11 ...finished (time 00:02s) 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: 001/095 ...done (Configuration Files to Review) --[CUT]-- List of all packages and services --[/CUT]-- 095/095 ...done (NIS server config file back-up) Assessment finished (time 11:55s) Result table with checks and their results for main contents: ---------------------------------------------------------------------------------- |Bacula Backup Software |notapplicable | |PostgreSQL upgrade content |notapplicable | | --[CUT]-- Lot's of not applicable packages --[/CUT]-- | |several kernel networking drivers not available in CentOS 7 |pass | |several kernel storage drivers not available in CentOS 7 |pass | |MySQL configuration |informational | |Migration of the MySQL data stack |informational | |Compatibility Between iptables and ip6tables |informational | |Net-SNMP check |informational | |VCS repositories |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 | |GMP library incompatibilities |informational | |CVS Package Split |informational | |NTP configuration |informational | |Information on time-sync.target |informational | |File Systems, Partitions and Mounts Configuration Review |informational | |SonameKept Reusable Dynamic Libraries |informational | |Content for enabling and disabling services (...) |informational | |YUM |informational | |Reusable Configuration Files |fixed | |Replaced rpms |fixed | |package downgrades |fixed | |OpenSSH sysconfig migration content |fixed | |State of LVM2 services. |fixed | |Configuration Files to Review |needs_inspection | |File Lists for Manual Migration |needs_inspection | |Obsoleted rpms |needs_inspection | |Binary rebuilds |needs_inspection | |Foreign Perl modules |needs_inspection | |Check for usage of dangerous range of UID/GIDs |needs_inspection | |Packages not signed by CentOS |needs_action | |Removed rpms |needs_action | |General |needs_action | |Sonamebumped libs |needs_action | |Removed .so libs |needs_action | |User modification in /etc/rc.local and /etc/rc.d/rc.local |needs_action | ---------------------------------------------------------------------------------- Tarball with results is stored here /root/preupgrade-results/preupg_results-140801172528.tar.gz . The latest assessment is stored in directory /root/preupgrade . Summary information: We found some potential in-place upgrade risks. 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 .

در centos 7 یک اتفاق جالب افتاده و mariadb جایگزین MySql کرده، systemD جایگزین Upstart – udev و grub2 جایگزین grub شده است.
CentOS7 GPG key با دستور زیر اضافه کنید
rpm --import http://centos.mirror.transip.nl/7/os...G-KEY-CentOS-7

1	rpm --import http://centos.mirror.transip.nl/7/os...G-KEY-CentOS-7

در انتها دستور زیر بزنید.
/usr/bin/redhat-upgrade-tool-cli --network 7 --instrepo=http://centos.mirror.transip.nl/7/os/x86_64

1	/usr/bin/redhat-upgrade-tool-cli --network 7 --instrepo=http://centos.mirror.transip.nl/7/os/x86_64

برنامه هایی مانند NginX, fail2ban, jexec باید حذف و مجدد نصب و کانفیگ شود.

تشکر فراموش نشود