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Thread: Sanity Check: Upgrade/Migration from ZCS 7.X to 8.x

  1. #1
    cdunbar is offline Intermediate Member
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    Default Sanity Check: Upgrade/Migration from ZCS 7.X to 8.x

    Hello,

    I have been lurking for a while, reading posts and articles on the best way to upgrade my current ZCS 7.x implementation to 8.x. I want to move to a newer server platform as well so I will not be doing in-place upgrades of my existing ZCS servers. Any comments on my proposed plan are greatly appreciated...

    1. Install new ZCS 8 ldap replica.
    2. Promote ZCS replica to master
    3. Install new ZCS Proxy/MTA server and one or more ZCS 8 mail stores
    4. Move mailboxes from current ZCS 7 mail store to new ZCS mail stores.
    5. Decommission ZCS 7 servers

    Is the basic logic sound or have I missed something?

    Thank you,
    Chris

  2. #2
    federico.bertola's Avatar
    federico.bertola is offline Special Member
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    I guess you cannot add a zimbra 8 server to a zimbra 7 infrastructure. AFAIK the only way to migrate without doing an in-place upgrade is try a Zextras migration.

    My2cents


    Sent from my iPhone using Tapatalk 2
    Federico Bertola
    CTO @ StudioStorti

  3. #3
    cdunbar is offline Intermediate Member
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    [QUOTE=federico.bertola;259676]I guess you cannot add a zimbra 8 server to a zimbra 7 infrastructure. AFAIK the only way to migrate without doing an in-place upgrade is try a Zextras migration.

    I thought one of the features of ZCS 8 was the ability to run the latest 7.x servers in a mixed environment.

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    halley is offline Senior Member
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    removed post
    Last edited by halley; 02-27-2013 at 04:16 AM. Reason: 1

  5. #5
    cdunbar is offline Intermediate Member
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    Wrong thread? I'm not sure how this applies to my topic...

  6. #6
    anudeep@itopstube.com's Avatar
    anudeep@itopstube.com is online now Active Member
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    If you want to migrate to newer hardware, this is a plan of action which I successfully migrated previously.

    Steps need to perform on old server:

    1. Take full backup of /opt/zimbra folder(better compress it then it will not affect on file permission) and also backup /etc/hosts file.


    Steps need to perform on new server:

    1. Install same version of OS on new server(new server platform need to exactly be same version of old server including OS updates).
    2. Install the same version of zimbra on new server(which need to exactly equal to old server zimbra version)
    3. After installing zimbra server just stop all zimbra services and then backup and move /opt/zimbra folder to some where else.
    4. Extract old server backup zimbra tar file and place it on corresponding locations(make sure to don't lose file permissions) and also make sure to configure same host name and fully configured name on /etc/hosts file.
    5. start the zimbra service, if every thing done correctly service will up without any issue.
    6. now its very simple just download latest zimbra version(what ever you are going zimbra version 8)
    7. And then simply upgrade the zimbra version.
    8. now all set you are successfully migrated.

    Note: make sure to test the full scenario on test bid before performing on production environment.
    Thanks,
    Anudeep.
    From itopstube.com

  7. #7
    cdunbar is offline Intermediate Member
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    I appreciate the feedback. In my case everything is virtualized so hardware is not the issue. I need to upgrade the underlying OS instead.

  8. #8
    cdunbar is offline Intermediate Member
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    I appreciate everybody's feedback, but I am still wondering if my initial game plan is a good one. Can anybody comment on the ability to add a ZCS 8 ldap server to the existing ZCS 7 environment?

  9. #9
    cdunbar is offline Intermediate Member
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    Hello,

    I wound up resolving this matter with the help of Zimbra support. The short answer is that yes, it is possible to do the migration roughly the way I laid it out. I have completed the process and am just cleaning up a few loose ends and moving mailboxes as needed. The one major change was that we had to introduce a new ZCS 7.2.3 LDAP server, promote it to Master, and then upgrade it to ZCS 8.0.3. There was a bug or two that prevented us from successfully promoting my original ZCS 8.0.3 LDAP Replica to Master. Other than that, it has been generally smooth having ZCS 7 and 8 servers running together. When my mailboxes are finally all moved, I will decommission the last ZCS 7 server and be on all ZCS 8.0.3.

    Regards,
    Chris

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