Files
leadchat/deployment/chatwoot-worker.1.service
Vishnu Narayanan 775b73d1f9 fix: raise open file descriptor limit to prevent EMFILE errors (#13895)
## Summary
- Adds `LimitNOFILE=65536` to both web and worker systemd service units
- Fixes recurring `Errno::EMFILE` (Too many open files) errors during
peak traffic after deploys

## Context
Puma workers idle at 720-770 open FDs against the default soft limit of
1024, leaving ~250 FDs of headroom. During deploy-triggered instance
refreshes at peak traffic, concurrent requests exhaust the remaining
FDs, causing EMFILE across all web instances.

3 incidents in March 2026 with escalating event counts. The hard limit
is already 524288, so this just raises the soft limit to a standard
production value.

Self-hosted instances pick this up automatically via `cwctl --upgrade`.

Fixes
https://linear.app/chatwoot/issue/CW-6685/errnoemfile-too-many-open-files-rb-sysopen
2026-03-24 17:37:07 -07:00

32 lines
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Desktop File

[Unit]
Requires=network.target
PartOf=chatwoot.target
[Service]
Type=simple
User=chatwoot
WorkingDirectory=/home/chatwoot/chatwoot
ExecStart=/bin/bash -lc 'dotenv bundle exec sidekiq -C config/sidekiq.yml'
Restart=always
RestartSec=1
TimeoutStopSec=30
KillMode=mixed
StandardInput=null
SyslogIdentifier=%p
LimitNOFILE=65536
MemoryMax=1.2G
MemoryHigh=infinity
MemorySwapMax=0
OOMPolicy=stop
Environment="PATH=/home/chatwoot/.rvm/gems/ruby-3.4.4/bin:/home/chatwoot/.rvm/gems/ruby-3.4.4@global/bin:/home/chatwoot/.rvm/rubies/ruby-3.4.4/bin:/home/chatwoot/.rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin:/home/chatwoot/.rvm/bin:/home/chatwoot/.rvm/bin"
Environment="PORT=3000"
Environment="RAILS_ENV=production"
Environment="NODE_ENV=production"
Environment="RAILS_LOG_TO_STDOUT=true"
Environment="GEM_HOME=/home/chatwoot/.rvm/gems/ruby-3.4.4"
Environment="GEM_PATH=/home/chatwoot/.rvm/gems/ruby-3.4.4:/home/chatwoot/.rvm/gems/ruby-3.4.4@global"