Replication between three servers
Hello,
I have dovecot replication working fine between 2 servers with LDA configured to sync mail coming from Postfix.
These 2 servers are used in master/slave mode - only the one server is used by IMAP clients and the second server is just a backup in case of failure.
Second server is also MX backup and it happens that incoming mails come from it via Postfix and get synchronized with the first server.
I would like to include third server as backup. How could be done while mail_replica accepts only one host?
On 20/04/2021 13:26 Miro Igov miro.igov@gmail.com wrote:
Hello, I have dovecot replication working fine between 2 servers with LDA configured to sync mail coming from Postfix. These 2 servers are used in master/slave mode – only the one server is used by IMAP clients and the second server is just a backup in case of failure. Second server is also MX backup and it happens that incoming mails come from it via Postfix and get synchronized with the first server.
I would like to include third server as backup. How could be done while mail_replica accepts only one host?
Replication is supported only between two hosts.
Aki
Is there any workaround for 3?
-----Original Message----- From: Aki Tuomi aki.tuomi@open-xchange.com Sent: Tuesday, April 20, 2021 13:41 To: Dovecot Mailing List dovecot@dovecot.org; Miro Igov miro.igov@gmail.com Subject: Re: Replication between three servers
On 20/04/2021 13:26 Miro Igov miro.igov@gmail.com wrote:
Hello, I have dovecot replication working fine between 2 servers with LDA configured to sync mail coming from Postfix. These 2 servers are used in master/slave mode – only the one server is used by IMAP clients and the second server is just a backup in case of failure. Second server is also MX backup and it happens that incoming mails come from it via Postfix and get synchronized with the first server.
I would like to include third server as backup. How could be done while mail_replica accepts only one host?
Replication is supported only between two hosts.
Aki
You need to use director, shared storage (such as NFS) and three nodes.
Aki
On 20/04/2021 13:44 Miro Igov miro.igov@gmail.com wrote:
Is there any workaround for 3?
-----Original Message----- From: Aki Tuomi aki.tuomi@open-xchange.com Sent: Tuesday, April 20, 2021 13:41 To: Dovecot Mailing List dovecot@dovecot.org; Miro Igov miro.igov@gmail.com Subject: Re: Replication between three servers
On 20/04/2021 13:26 Miro Igov miro.igov@gmail.com wrote:
Hello, I have dovecot replication working fine between 2 servers with LDA configured to sync mail coming from Postfix. These 2 servers are used in master/slave mode – only the one server is used by IMAP clients and the second server is just a backup in case of failure. Second server is also MX backup and it happens that incoming mails come from it via Postfix and get synchronized with the first server.
I would like to include third server as backup. How could be done while mail_replica accepts only one host?
Replication is supported only between two hosts.
Aki
Why shared storage is needed for such a setup? Can't it replicate to local storage ?
participants (2)
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Aki Tuomi
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Miro Igov