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    SubjectRe: /dev/stderr gets unlinked 8]
    Date
    On Wednesday 15 March 2006 13:02, Stefan Seyfried wrote:
    > On Tue, Mar 14, 2006 at 03:35:57PM +0200, Denis Vlasenko wrote:
    >
    > > Mysql people are strange. For example, their daemon does not want to die
    > > on SIGTERM, this makes it harder to run it under daemontools.
    >
    > Well, daemontools are equally strange ;-))

    IMHO the most sane way to control zillions of background processes.

    > > Also it drops privileges BEFORE it opens logfiles (--log=xxx).
    > > I cannot get it to log stuff on stderr:
    > >
    > > echo "* Starting mysqld"
    > > env - \
    > > setuidgid root \
    > > mysqld \
    > > --defaults-file="$PWD/my.cnf" \
    > > --user="$user" \
    > > --datadir="$var/data" \
    > > --tmpdir="$var/tmp" \
    > > --socket="$PWD/mysql.socket" \
    > > --pid-file="$PWD/mysql.pid" \
    > > --skip-name-resolve \
    > > --skip-innodb \
    > > --skip-ndbcluster \
    > > --skip-networking \
    > > --log=/proc/self/fd/2 \
    > > --log-slow-queries=/proc/self/fd/2 \
    > >
    > > Those last two options don't work:
    > >
    > > mysqld: File '/proc/self/fd/2' not found (Errcode: 13)
    >
    > any good daemon closes stdout, stderr, stdin and does chdir(/) on startup.
    > msqld might do so as well.

    No. Good daemon (e.g. apache does it) will open log file first, and _then_
    will do setuid($user). Mysql tries to do it in opposite order, and (no wonder)
    fails to open the log.
    --
    vda
    -
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