Wir haben Probleme, Hot-Deployment mit Einhorn. Wir verwenden die kanonische unicorn.rb
Konfiguration, stellen die working_directory
so ein, dass sie auf den symlink'd-Ordner zeigt, aber irgendwie scheint es beim ersten Start im aktuellen Ordner hängen geblieben zu sein und dem Symlink nicht zu folgen.Einhorn working_directory mit Symlink
# config/unicorn.rb
if ENV['RAILS_ENV'] == 'production'
worker_processes 4
else
worker_processes 2
end
working_directory "/var/local/project/symlinkfolder"
# Listen on unix socket
listen "/tmp/unicorn.sock", :backlog => 64
pid "/var/run/unicorn/unicorn.pid"
stderr_path "/var/log/unicorn/unicorn.log"
stdout_path "/var/log/unicorn/unicorn.log"
preload_app true
before_fork do |server, worker|
# the following is highly recomended for Rails + "preload_app true"
# as there's no need for the master process to hold a connection
if defined?(ActiveRecord::Base)
ActiveRecord::Base.connection.disconnect!
end
# Before forking, kill the master process that belongs to the .oldbin PID.
# This enables 0 downtime deploys.
old_pid = "/var/run/unicorn/unicorn.pid.oldbin"
if File.exists?(old_pid) && server.pid != old_pid
begin
Process.kill("QUIT", File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
# someone else did our job for us
end
end
end
after_fork do |server, worker|
# the following is *required* for Rails + "preload_app true",
if defined?(ActiveRecord::Base)
ActiveRecord::Base.establish_connection
end
# this makes sure the logging-rails framework works when preload_app = true
Logging.reopen
# if preload_app is true, then you may also want to check and
# restart any other shared sockets/descriptors such as Memcached,
# and Redis. TokyoCabinet file handles are safe to reuse
# between any number of forked children (assuming your kernel
# correctly implements pread()/pwrite() system calls)
end
Wenn wir ein USR2
ausstellen, sehen wir dies in dem Einhorn Protokoll:
executing ["/var/local/project/project.d/6/vendor/bundle/ruby/1.9.1/bin/unicorn_rails", "-E", "staging", "-D", "-c", "/var/local/project/symlinkfolder/config/unicorn.rb"│·
, {12=>#<Kgio::UNIXServer:fd 12>}] (in /var/local/project/project.d/8)
so Einhorn irgendwie 'stecken' auf Version 6, während die tatsächlichen Symlink-Ordner auf Version 8 sind .. . dies wird zu einem Problem, sobald wir Ordner für Version 6 nach einigen entfaltet ...
- Die
working_directory
ist auf den symlink'd fol beschneiden Der - der Symlink auf
/var/local/project/project.d/[id]
Ordner - Wir korrekt den Symlink aktualisieren vor Senden des
USR2
Signal
Was wir vermissen ??