I submitted a PR on this. In short the problem that I'm having is that
mysqld becomes a daemon and returns control the rcorder subsystem
before it has established it unix domain listening socket. On my
system the next daemon to run is jabberd. Jabberd (from the jabberd2
port) has a component sm which depends on mysql for it's data storage.
Since it takes a second on my system for mysqld to establish it's
listening socket sm fails which takes down all of jabberd.... I
patched the mysql-server startup script to wait for up to 15 seconds
before termination. This fixes the problem on my side. According to
the email I just got this went in as PR ports/122063
-- Chris
PR follows
Problem:
The rc.d script shipped with the port of mysql server exits
immediately after mysqld starts. This normally wouldn't be a problem
but the mysql daemon exits about a second before it has established
it's unix domain listening socket: "/tmp/mysql". The problem here is
that the rc startup system can queue the next daemon to start before "/
tmp/mysql" is available. If the next daemon needs mysql it will fail
and exit. On my system rcorder starts mysql-server and then
immediately follows up with jabberd. Since mysql doesn't appear ready
for about a second jabberd fails and exits.
I've attached a patch which waits for up to 15 seconds for the /tmp/
mysql socket to appear in the filesystem and exits as soon as it's
available. This allows the next daemon in line to startup properly if
it needs mysql. Note that I have had this problem with postfix up
until I removed my mail information from mysql.
Repeat:
Build a system that uses mysql and jabber or postfix. Ensure that
jabberd starts after mysql by hacking /usr/local/etc/rc.d/jabberd's ##
REQUIRES line. Assuming you're not on some hot rod of a machine check
your logs for jabberd2's failure line in the service manager.
Fix:
This may not adhere to the strictest rules of the rcorder system but
my solution is to hack the provider's (mysql-server) startup script.
The goal was to prevent the script from exiting until either the
listening socket is established or a 15 second timeout has passed.
A better solution would be for mysqld to establish the listening
socket first (even if it ignores incoming connections for a little
bit) but that's much higher effort.
Patch:
--- mysql-server.sh.in 2008-03-25 00:10:14.000000000 -0400
+++ mysql-server.sh.in.orig 2008-03-25 00:02:58.000000000 -0400
@@ -18,8 +18,6 @@
# Base database directory.
# mysql_args (str): Custom additional arguments to be passed
# to mysqld_safe (default empty).
-# mysql_conn_socket (str): Defaults to "/tmp/mysql.sock"
-# The unix domain socket the daemon listens
on.
#
. %%RC_SUBR%%
@@ -32,17 +30,15 @@
: ${mysql_enable="NO"}
: ${mysql_limits="NO"}
: ${mysql_dbdir="/var/db/mysql"}
-: ${mysql_conn_socket="/tmp/mysql.sock"}
: ${mysql_args=""}
mysql_user="mysql"
mysql_limits_args="-e -U ${mysql_user}"
pidfile="${mysql_dbdir}/`/bin/hostname`.pid"
command="%%PREFIX%%/bin/mysqld_safe"
-command_args="--defaults-extra-file=${mysql_dbdir}/my.cnf --user=$
{mysql_user} --datadir=${mysql_dbdir} --pid-file=${pidfile} $
{mysql_args}"
+command_args="--defaults-extra-file=${mysql_dbdir}/my.cnf --user=$
{mysql_user} --datadir=${mysql_dbdir} --pid-file=${pidfile} $
{mysql_args} > /dev/null &"
procname="%%PREFIX%%/libexec/mysqld"
start_precmd="${name}_prestart"
-start_cmd="${name}_start"
mysql_install_db="%%PREFIX%%/bin/mysql_install_db"
mysql_install_db_args="--ldata=${mysql_dbdir}"
@@ -64,19 +60,4 @@
fi
}
-mysql_start()
-{
- local timeout=15
-
- echo "Starting ${name}"
-
- ${command} ${command_args} < /dev/null > /dev/null 2>&1 &
- while [ ! -S "${mysql_conn_socket}" -a ${timeout} -gt 0 ]; do
- timeout=$(( timeout - 1 ))
- sleep 1
- done
-
- return 0
-}
-
run_rc_command "$1"
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