[CentOS] named & rndc
Stephen Harris
lists at spuddy.orgSat Sep 22 14:16:41 UTC 2007
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On Sat, Sep 22, 2007 at 09:44:20AM -0400, Peter Arremann wrote: > Because restart executes stop and then start. Even if the process has been > killed, there may be other things like lock files, shared memory segments and > so on around that will be properly removed by stop. Therefore using restart > instead of start is a correct and good practice. No. Depending on the rc script it _might_ be safe. In other cases it could be insanely dangerous. Take, for example, the following "stop" code... kill -9 `cat /var/run/myapp.pid` What if "myapp" has died but left the pid file behind? Another process could have that process ID. You've now killed some innocent defenseless program. (oh look... /etc/init.d/pcmcia...) So... your procedure is _probably_ safe, there's no way it can be called "good practice" and definitely not "correct". -- rgds Stephen
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