81 lines
2.3 KiB
Bash
81 lines
2.3 KiB
Bash
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#!/bin/bash
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#
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# IMAP search with xapian
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# --------------------------------
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#
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# By default dovecot uses its own Squat search index that has awful performance
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# on large mailboxes and is obsolete. Dovecot 2.1+ has support for using Lucene
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# internally but this didn't make it into the Ubuntu packages. Solr uses too
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# much memory. Same goes for elasticsearch. fts xapian might be a good match
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# for mail-in-a-box. See https://github.com/grosjo/fts-xapian
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source setup/functions.sh # load our functions
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source /etc/mailinabox.conf # load global vars
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# Install packages and basic configuation
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# ---------------------------------------
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echo "Installing fts-xapian..."
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apt_install libxapian30
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# Update the dovecot plugin configuration
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#
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# Break-imap-search makes search work the way users expect, rather than the way
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# the IMAP specification expects.
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tools/editconf.py /etc/dovecot/conf.d/10-mail.conf \
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mail_plugins="fts fts_xapian"
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# Install cronjobs to keep FTS up to date.
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hide_output install -m 755 conf/cron/miab_dovecot /etc/cron.daily/
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if [ ! -f /usr/lib/dovecot/decode2text.sh ]; then
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cp -f /usr/share/doc/dovecot-core/examples/decode2text.sh /usr/lib/dovecot
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fi
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cat > /etc/dovecot/conf.d/90-plugin-fts.conf << EOF;
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plugin {
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plugin = fts fts_xapian
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fts = xapian
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fts_xapian = partial=3 full=20 verbose=0
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fts_autoindex = yes
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fts_enforced = yes
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fts_autoindex_exclude = \Trash
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fts_autoindex_exclude2 = \Junk
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fts_decoder = decode2text // To index attachements
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}
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service indexer-worker {
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vsz_limit = 2G // or above (or 0 if you have rather large memory usable on your server, which is preferred for performance)
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}
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service decode2text {
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executable = script /usr/lib/dovecot/decode2text.sh
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user = dovecot
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unix_listener decode2text {
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mode = 0666
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}
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}
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EOF
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restart_service dovecot
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# Kickoff building the index
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# Per doveadm-fts manpage: Scan what mails exist in the full text search index
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# and compare those to what actually exist in mailboxes.
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# This removes mails from the index that have already been expunged and makes
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# sure that the next doveadm index will index all the missing mails (if any).
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doveadm fts rescan -A
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# Adds unindexed files to the fts database
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# * `-q`: Queues the indexing to be run by indexer process. (will background the indexing)
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# * `-A`: All users
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# * `'*'`: All folders
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doveadm index -q -A '*'
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