[Dovecot] Problem with running two dovecot instances on the same server

[Alexandr Sabitov]

On 29/07/12 02:49, Timo Sirainen wrote:
> On 26.7.2012, at 5.27, Alexandr Sabitov wrote:
>> Jul 26 11:51:20 dovecot-test-1 dovecot: director: Error: Empty server list
>> Jul 26 11:51:20 dovecot-test-1 dovecot: director: Fatal: Invalid value for director_mail_servers setting
>> Jul 26 11:51:20 dovecot-test-1 dovecot: master: Error: service(director): command startup failed, throttling for 60 secs
> Director process gets started for the backend installation where it of course isn't configured. My guess: doveadm (from some cronjob?) is attempting to connect to /var/run/dovecot/director-admin instead of /var/run/dovecot-proxy/director-admin.
>

Hi Timo,

Thanks for reply.

That's right:  strace shows that director process is a child of 
non-proxy dovecot (pid 7089) which is should not be happening. And I 
don't have any cronjob running.

Might we need just update dovecot wiki that if someone runs dovecot and 
dovecot-proxy then they have to be installed in different folders as
separate binaries otherwise one instance cross over another somehow 
magically. :)

7089  epoll_wait(51, {}, 56, 25070)     = 0
7089  epoll_ctl(51, EPOLL_CTL_ADD, 38, 
{EPOLLIN|EPOLLPRI|EPOLLERR|EPOLLHUP, {u32=15790944, u64=15790944}}) = 0
7089  epoll_wait(51, {{EPOLLIN, {u32=15790944, u64=15790944}}}, 56, 
43627051) = 1
7089  clone(child_stack=0, 
flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x7f56462d19d0) = 7169
7089  epoll_ctl(51, EPOLL_CTL_DEL, 38, {0, {u32=15790944, 
u64=15790944}}) = 0
7089  epoll_wait(51,  <unfinished ...>
7169  dup2(83, 2)                       = 2
7169  close(6)                          = 0
7169  dup2(38, 7)                       = 7
7169  dup2(10, 3)                       = 3
7169  dup2(129, 5)                      = 5
7169  dup2(95, 6)                       = 6
7169  setrlimit(RLIMIT_DATA, {rlim_cur=262144*1024, 
rlim_max=262144*1024}) = 0
7169  setrlimit(RLIMIT_AS, {rlim_cur=262144*1024, rlim_max=262144*1024}) = 0
7169  execve("/usr/local/dovecot/libexec/dovecot/director", 
["dovecot/director"], [/* 15 vars */]) = 0
7169  brk(0)                            = 0xff6000
7169  access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or 
directory)

root at dovecot-test-1:/home/asabitov# lsof /var/run/dovecot/director-admin
COMMAND  PID USER   FD   TYPE             DEVICE SIZE/OFF  NODE NAME
dovecot 7089 root   38u  unix 0xffff88007e8e1200      0t0 48243 
/var/run/dovecot/director-admin
root at dovecot-test-1:/home/asabitov# lsof 
/var/run/dovecot-proxy/director-admin
COMMAND   PID    USER   FD   TYPE             DEVICE SIZE/OFF  NODE NAME
dovecot  7102    root   39u  unix 0xffff88007e9da300      0t0 48469 
/var/run/dovecot-proxy/director-admin
director 7178 webmail    8u  unix 0xffff88007e9da300      0t0 48469 
/var/run/dovecot-proxy/director-admin

#ps auxf
root      7089  0.0  0.0  17332  1092 ?        Ss   Jul27   0:02 
/usr/local/dovecot/sbin/dovecot
webmail   7091  0.0  0.0  12808  1100 ?        S    Jul27   0:00  \_ 
dovecot/anvil
root      7092  0.0  0.0  13056  1324 ?        S    Jul27   0:01  \_ 
dovecot/log
root      3572  0.0  0.1  14256  2220 ?        S    Jul29   0:01  \_ 
dovecot/config
webmail  16207  0.0  0.2  71684  4252 ?        S    09:11   0:00  \_ 
dovecot/imap
root      7102  0.0  0.0  17204  1072 ?        Ss   Jul27   0:01 
/usr/local/dovecot/sbin/dovecot -c 
/usr/local/dovecot/etc/dovecot/dovecot-proxy.conf
webmail   7104  0.0  0.0  12808  1084 ?        S    Jul27   0:00  \_ 
dovecot-proxy/anvil
root      7105  0.0  0.0  12936  1244 ?        S    Jul27   0:00  \_ 
dovecot-proxy/log
webmail   7178  0.0  0.0  12964  1328 ?        S    Jul27   0:00  \_ 
dovecot-proxy/director
dovenull 16202  0.0  0.1  23500  2916 ?        S    09:11   0:00  \_ 
dovecot-proxy/imap-login director
root     16203  0.0  0.1  14604  2544 ?        S    09:11   0:00  \_ 
dovecot-proxy/config
webmail  16208  0.0  0.0  12804  1028 ?        S    09:11   0:00  \_ 
dovecot-proxy/ipc
root      7108  0.0  0.3  48240  6412 ?        Ss   Jul27   0:01 perl 
/usr/local/dovecot/bin/poolmon

-- 

Regards,
Alexandr Sabitov
Systems Administrator
Netregistry