Re: Any idea why chroot temporarily "cannot find name for group ID 0"?
- To: Daniel Burrows <email@example.com>
- Cc: firstname.lastname@example.org
- Subject: Re: Any idea why chroot temporarily "cannot find name for group ID 0"?
- From: David Barrett <email@example.com>
- Date: Sat, 05 Jul 2008 17:02:53 -0700
- Message-id: <48700BAD.firstname.lastname@example.org>
- In-reply-to: <20080703012719.GA30645@alpaca>
- References: <email@example.com> <firstname.lastname@example.org> <20080630050009.GA29044@alpaca> <486885DA.email@example.com> <20080630141903.GB31183@alpaca> <48693E32.firstname.lastname@example.org> <20080701020146.GA6192@alpaca> <486C1F9A.email@example.com> <20080703012719.GA30645@alpaca>
Ok, so I have definitely confirmed that:
1) Both the db and www chroot periodically break
2) When broken, the www chroot can't send email from PHP
3) Each can be fixed by chrooting in with "ls /etc/group /etc/passwd"
4) Fixing one doesn't fix the other
5) Once the www chroot is fixed, PHP can send email just fine
6) I needn't restart lighttpd/php to fix it
The filesystem is ext3.
One theory was nscd, but I don't think I have that running. At the very
least, I don't see a nscd process:
[root@XXXX svn]# ps aux | grep nscd
root 12260 0.0 0.1 3916 684 pts/0 S+ 00:01 0:00 grep nscd
I'm thinking the real solution is to ditch this old FC4 host system
(which was installed by the dedicated server provider, and thus I don't
know what weird changes they made) and switch to Debian.
Daniel Burrows wrote:
On Wed, Jul 02, 2008 at 05:38:50PM -0700, David Barrett <firstname.lastname@example.org> was heard to say:
Wow, great observation: doing a "ls" of /etc/group and /etc/passwd fixes
it. How incredibly strange:
I'd go for "jawdroppingly bizarre" myself.
The only other thing I can think of is that maybe there's something
odd at the filesystem level. Is it anything but a straight ext3
filesystem? (e.g., are you using NFS, unionfs, fuse filesystems, etc)