Third 8.8 Beta Release

Zimbra Collaboration 8.8 Beta
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mmedellin
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Third 8.8 Beta Release

Postby mmedellin » Thu Aug 03, 2017 2:24 pm

Good morning all,

We've published the third beta for 8.8 at https://info.zimbra.com/try-zcs-8.8-beta. A major feature inclusion in this beta is the refactored IMAP service, IMAPD. Release notes with additional documentation and known issues here: https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8_Beta3

Please note: while the install will state that you will be upgrading from 8.8.0 to 8.8.1, you will still be installing the third beta release for 8.8 as we progress towards a production ready release. As usual, please do not deploy this beta in production environments. We will not be providing technical support for this beta.

If you find any issues in this beta, please open an bug at https://bugzilla.zimbra.com and tag the issue with the keyword "8_8_0_Beta_3" and we'll take a look. For any other issues/questions, please reach out to me directly.

Michael


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L. Mark Stone
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Re: Third 8.8 Beta Release

Postby L. Mark Stone » Thu Aug 03, 2017 3:49 pm

mmedellin wrote:Good morning all,

We've published the third beta for 8.8 at https://info.zimbra.com/try-zcs-8.8-beta. A major feature inclusion in this beta is the refactored IMAP service, IMAPD. Release notes with additional documentation and known issues here: https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8_Beta3

Please note: while the install will state that you will be upgrading from 8.8.0 to 8.8.1, you will still be installing the third beta release for 8.8 as we progress towards a production ready release. As usual, please do not deploy this beta in production environments. We will not be providing technical support for this beta.

If you find any issues in this beta, please open an bug at https://bugzilla.zimbra.com and tag the issue with the keyword "8_8_0_Beta_3" and we'll take a look. For any other issues/questions, please reach out to me directly.

Michael


Hi Michael,

Can you give us some guidance as to the decision criteria for when the new IMAPd should be installed on a separate server(s)? Minimum server resources?

Can you also address how much more efficient the new IMAPd service is over the traditional IMAP services in Zimbra?

IOW, while I get that the new IMAPd service if deployed on separate servers will enable me to have fewer mailbox servers, I'd like to understand some of the benchmarks and recommended sizing limitations around that please.

Thanks!
Mark
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Re: Third 8.8 Beta Release

Postby L. Mark Stone » Thu Aug 03, 2017 4:25 pm

And FWIW, the upgrade to Beta 3 went OK. We have three-server test farm:
-- Proxy + LDAP MMR
-- MTA + LDAP MMR
-- Mailbox + Logger

After the upgrade the new IMAPd failed to start on the mailbox server, so we found that once we ran:

Code: Select all

zimbra@mb5:~$ zmprov mcf zimbraImapServerEnabled FALSE
zimbra@mb5:~$ zmprov mcf zimbraImapSSLServerEnabled FALSE
zimbra@mb5:~$ zmprov ms `zmhostname` zimbraRemoteImapServerEnabled TRUE
zimbra@mb5:~$ zmprov ms `zmhostname` zimbraRemoteImapSSLServerEnabled TRUE
zimbra@mb5:~$ zmprov flushCache -a config
zimbra@mb5:~$ zmcontrol restart && sleep 10 && zmcontrol status


...then all was good.

I understand that if we were migrating to IMAPd on a per-server basis I'd make the first two commands to turn off the mailboxd IMAP server a "zmprov ms ..." command instead.

We'll do a little IMAP testing later, but thought I'd report on the install. The Release Notes section was a little confusing that we needed to run the above even when installing IMAPd on an existing mailbox server, rather than its own node.

All the best,
Mark
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jorgedlcruz
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Re: Third 8.8 Beta Release

Postby jorgedlcruz » Thu Aug 03, 2017 4:28 pm

A bit some information can be found here related to IMAPD - https://zimbra.github.io/adminguide/wor ... apd_server
Jorge de la Cruz https://jorgedelacruz.es
Technical Marketing Manager at Zimbra/Synacor https://www.zimbra.com/
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Re: Third 8.8 Beta Release

Postby L. Mark Stone » Thu Aug 03, 2017 4:45 pm

So I added the Beta 3 mailbox as an IMAP Account in Mac Mail, and noticed some problems:

First, Mac Mail can't read my Inbox even though it authenticates OK; it says "The attempt to read data from the server “(null)” failed."

Second, when I send a test email from Mac Mail it gets delivered just fine, and it appears in my Mac Mail Sent folder, but not in my Zimbra 8.8 Beta 3 Sent folder.

Perhaps this is all related to zimbraMemcachedClientExpirySeconds?

If so, I'll just wait and retest tomorrow afternoon.

All the best,
Mark
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Re: Third 8.8 Beta Release

Postby L. Mark Stone » Thu Aug 03, 2017 6:27 pm

jorgedlcruz wrote:A bit some information can be found here related to IMAPD - https://zimbra.github.io/adminguide/wor ... apd_server


Yes, that was the documentation that confused me. What I came to conclude was that the new IMAPd service is treated as Remote whether it is truly on a remote server or installed on the mailbox server itself.

Any news about the Nextcloud 12 application? to enable Drive?

All the best,
Mark
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Re: Third 8.8 Beta Release

Postby king0770 » Thu Aug 03, 2017 10:37 pm

Hey Mark,

With regards to Nextcloud 12d & Drive, ZExtras are still working on it, see https://bugzilla.zimbra.com/show_bug.cgi?id=108020

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