Re: replicator: Panic: data stack: Out of memory when allocating 268435496 bytes

6 Jan 2023 · *MailScanner*


      How problematic is it to have
default_vsz_limit = 0
in dovecot.conf? macOS+MacPorts had this as a requirement even.
Gerben
...
On 6 Jan 2023, at 16:49, Paul Kudla paul@scom.ca wrote:
i ran into this as well
here is the full config for mine with replication
# cat dovecot.conf
# 2.3.14 (cee3cbc0d): /usr/local/etc/dovecot/dovecot.conf
# OS: FreeBSD 12.1-RELEASE amd64
# Hostname: mail18.scom.ca
auth_debug = no
auth_debug_passwords = no
default_process_limit = 16384
mail_debug = no
#lock_method = dotlock
#mail_max_lock_timeout = 300s
#mbox_read_locks = dotlock
#mbox_write_locks = dotlock
mmap_disable = yes
dotlock_use_excl = no
mail_fsync = always
mail_nfs_storage = no
mail_nfs_index = no
auth_mechanisms = plain login
auth_verbose = yes
base_dir = /data/dovecot/run/
debug_log_path = syslog
disable_plaintext_auth = no
dsync_features = empty-header-workaround
info_log_path = syslog
login_greeting = SCOM.CA Internet Services Inc. - Dovecot ready
login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c
mail_location = maildir:~/
mail_plugins = " virtual notify replication fts fts_lucene "
mail_prefetch_count = 20
protocols = imap pop3 lmtp sieve
protocol lmtp {
mail_plugins = $mail_plugins sieve
postmaster_address =
}
service lmtp {
process_limit=1000
vsz_limit = 512m
client_limit=1
unix_listener /usr/home/postfix.local/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix
}
}
protocol lda {
mail_plugins = $mail_plugins sieve
}
service lda {
process_limit=1000
vsz_limit = 512m
}
service imap {
process_limit=4096
vsz_limit = 2g
client_limit=1
}
service pop3 {
process_limit=1000
vsz_limit = 512m
client_limit=1
}
namespace inbox {
inbox = yes
location =
mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Sent {
auto = subscribe
special_use = \Sent
}
mailbox Trash {
auto = subscribe
special_use = \Trash
}
prefix =
separator = /
}
passdb {
args = /usr/local/etc/dovecot/dovecot-pgsql.conf
driver = sql
}
doveadm_port = 12345
doveadm_password = secretxxxx
service doveadm {
process_limit = 0
process_min_avail = 0
idle_kill = 0
client_limit = 1
user = vmail
inet_listener {
port = 12345
}
}
service config {
unix_listener config {
user = vmail
}
}
dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u
#dsync_remote_cmd = doveadm sync -d -u%u
replication_dsync_parameters = -d -N -l 300 -U
plugin {
mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename
mail_log_fields = uid, box, msgid, from, subject, size, vsize, flags
push_notification_driver = dlog
sieve = file:~/sieve;active=~/sieve/.dovecot.sieve
#sieve = ~/.dovecot.sieve
sieve_duplicate_default_period = 1h
sieve_duplicate_max_period = 1h
sieve_extensions = +duplicate +notify +imapflags +vacation-seconds
sieve_global_dir = /usr/local/etc/dovecot/sieve
sieve_before = /usr/local/etc/dovecot/sieve/duplicates.sieve
mail_replica = tcp:10.221.0.19:12345
#mail_replica = remote:vmail@10.221.0.19
#replication_sync_timeout = 2
fts = lucene
fts_lucene = whitespace_chars=@.
fts_autoindex = yes
fts_languages = en
}
#sieve_extensions = vnd.dovecot.duplicate
#sieve_plugins = vnd.dovecot.duplicate
service anvil {
process_limit = 1
client_limit=5000
vsz_limit = 512m
unix_listener anvil {
group = vmail
mode = 0666
}
}
service indexer-worker {
vsz_limit = 2g
}
service auth {
process_limit = 1
client_limit=5000
vsz_limit = 1g
unix_listener auth-userdb {
mode = 0660
user = vmail
group = vmail
}
unix_listener /var/spool/postfix/private/auth {
mode = 0666
}
}
service stats {
process_limit = 1000
vsz_limit = 1g
unix_listener stats-reader {
group = vmail
mode = 0666
}
unix_listener stats-writer {
group = vmail
mode = 0666
}
}
userdb {
args = /usr/local/etc/dovecot/dovecot-pgsql.conf
driver = sql
}
protocol imap {
mail_max_userip_connections = 50
mail_plugins = $mail_plugins notify replication
}
protocol pop3 {
mail_max_userip_connections = 50
mail_plugins = $mail_plugins notify replication
}
protocol imaps {
mail_max_userip_connections = 25
mail_plugins = $mail_plugins notify replication
}
protocol pop3s {
mail_max_userip_connections = 25
mail_plugins = $mail_plugins notify replication
}
service managesieve-login {
process_limit = 1000
vsz_limit = 1g
inet_listener sieve {
port = 4190
}
}
verbose_proctitle = yes
replication_max_conns = 100
replication_full_sync_interval = 1d
service replicator {
client_limit = 0
drop_priv_before_exec = no
idle_kill = 4294967295s
process_limit = 1
process_min_avail = 0
service_count = 0
vsz_limit = 8g
unix_listener replicator-doveadm {
mode = 0600
user = vmail
}
vsz_limit = 8192M
}
service aggregator {
process_limit = 1000
#vsz_limit = 1g
fifo_listener replication-notify-fifo {
user = vmail
group = vmail
mode = 0666
}
}
service pop3-login {
process_limit = 1000
client_limit = 100
vsz_limit = 512m
}
service imap-urlauth-login {
process_limit = 1000
client_limit = 1000
vsz_limit = 1g
}
service imap-login {
process_limit=1000
client_limit = 1000
vsz_limit = 1g
}
protocol sieve {
managesieve_implementation_string = Dovecot Pigeonhole
managesieve_max_line_length = 65536
}
#Addition ssl config
!include sni.conf
with sni cert support (examples)
# cat sni.conf
#sni.conf
ssl = yes
verbose_ssl = yes
ssl_dh =
#Default *.scom.ca
ssl_key =
local_name .scom.ca {
ssl_key =
}
local_name mail.clancyca.com {
ssl_key =
local_name mail.paulkudla.net {
ssl_key =
local_name mail.ekst.ca {
ssl_key =
local_name mail.hamletdevelopments.ca {
ssl_key =
pg sql support supporting replication
# cat dovecot-pgsql.conf
driver = pgsql
connect = host=localhost port=5433 dbname=scom_billing user=pgsql password=
default_pass_scheme = PLAIN
password_query = SELECT username as user, password FROM email_users WHERE username = '%u' and password <> 'alias' and status = True and destination = '%u'
user_query = SELECT home, uid, gid FROM email_users WHERE username = '%u' and password <> 'alias' and status = True and destination = '%u'
#iterate_query = SELECT user, password FROM email_users WHERE username = '%u' and password <> 'alias' and status = True and destination = '%u'
iterate_query = SELECT "username" as user, domain FROM email_users WHERE status = True and alias_flag = False
Happy Friday !!!
Thanks - paul
Paul Kudla
Scom.ca Internet Services http://www.scom.ca
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3
Toronto 416.642.7266
Main 1.866.411.7266
Fax 1.888.892.7266
Email paul@scom.ca
On 1/6/2023 5:32 AM, Gerben Wierda wrote:
...
...
On 6 Jan 2023, at 08:53, Aki Tuomi mailto:aki.tuomi@open-xchange.com> wrote:
On January 6, 2023 3:56:39 AM GMT+02:00, Gerben Wierda mailto:gerben.wierda@rna.nl> wrote:
...
One step further in my quest to create a replacement mail server.
I now have my old mail server (2.3.19.1, macOS + MacPorts) and my new (2.3.20, Alpine Linux, Docker, apk package). When I turn on replication it works, but, after a while I see:
Jan 06 00:50:31 replicator: Panic: data stack: Out of memory when allocating 268435496 bytes
Jan 06 00:50:32 replicator: Fatal: master: service(replicator): child 133 killed with signal 6 (core dumped)
Jan 06 00:50:32 lmtp(pid 195 user sysbh): Warning: replication(sysbh): Sync failure:
Jan 06 00:50:32 lmtp(pid 195 user sysbh): Warning: replication(sysbh): Remote sent invalid input: -
I've removed synchronous operation for now (found a message on the net suggesting that) but is this known and what does it mean?
Gerben Wierda (LinkedIn <https://www.linkedin.com/in/gerbenwierda https://www.linkedin.com/in/gerbenwierda>)
R&A IT Strategy <https://ea.rna.nl/ https://ea.rna.nl/> (main site)
Book: Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/ https://ea.rna.nl/the-book/>
Book: Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/ https://ea.rna.nl/the-book-edition-iii/>
Dovecot default memory limit is 256M. You should probably set
service replicator {
vsz_limit = 2G
}
because replicator might have to use more memory, especially for larger indexes.
Aki
That is a good tip as well.
I had followed this bit of experience from someone else: https://marc.info/?l=dovecot&m=164438199727640 https://marc.info/?l=dovecot&m=164438199727640, haven't seen any err message since. But that might be because they are in sync now and both sides are aware. Can I trigger full replication again so I can test?
Gerben
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