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It's not just init scripts that are designed poorly, it's applications |
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that fail to daemonize and dont' return non-zero. (like apache-1.3, |
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ntp-date, snort, etc.. most servers). |
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|
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I think the new baselayout has some adjustable sleep/checks on by |
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default, but I haven't tries it yet. I suppose that would work by |
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having the init script sleep for a short time, then check to see if a |
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certain process is running (a dirty hack that's frowned updon by |
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some)... |
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|
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Anyway, I really think this is something worth looking into, either as |
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a separate package that implements some kind of monitoring functions |
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in init scripts, or as a basic set of monitoring functions that are |
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included in baselayout for developers to optionally use. While there |
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are options like daemontools and rmon? I don't think they provide a |
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very robust solution to this problem. |
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|
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Here's an idea: |
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|
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Have users emerge a program that can do some basic things: |
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|
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1) check config scripts of running services for variables like: |
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CHECK_COMMAND |
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SLEEP_TIME |
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INIT_SLEEP |
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IF_DOWN_DO_THIS |
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|
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(those variables could optionally be implemented per package, or |
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explicitly disabled, they would have sane defaults in a central .conf |
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file for this enhancement package) |
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|
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2) is a cron job/daemon that automatically checks all running apps in |
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the current runlevel, can report problems (send emails, log stuff, |
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etc), can send heartbeat, etc.. |
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|
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3) is well documented in the gentoo handbook since it's probably a |
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vital component |
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|
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|
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To me this kind of thing is probably simple, unixish, and robust |
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enough for most of our needs... |
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|
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Any thoughs? |
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|
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On 12/16/05, Andrea Carpani <ml@×××××××.net> wrote: |
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> Il giorno gio, 15-12-2005 alle 13:27 +0200, Alex Efros ha scritto: |
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> |
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> > If you're looking for _reliable_ alternative for runscript style init scripts, |
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> > then you should look into 'runit' package. Runit is improved version of DJB's |
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> > 'daemontools' package. I use it many years without any problems. |
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> > |
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> > Check websites of daemontools and runit for all gore details why it's only |
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> > _reliable_ way to control services. |
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> |
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> Thanks I'll try it. |
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> |
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> -- |
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> Andrea Carpani <ml@×××××××.net> |
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> |
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> -- |
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> gentoo-server@g.o mailing list |
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> |
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> |
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|
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-- |
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