Angus Salkeld <[email protected]> wrote:
> This might help understand how cman configures openais:
> http://sources.redhat.com/cluster/wiki/HomePage?action=AttachFile&do=view&target=aiscman.pdf
This document was extremely helpful, thank you.
I've gotten further, into another roadblock:
Starting the cman service gets as far as successfully running ccsd,
but then at the next step where it checks cman status, it fails.
| Starting cluster:
| Loading modules... done
| Mounting configfs... done
| Starting ccsd... done
| Starting cman... failed
|
| [FAILED]
Any attempt to use cman_tool gives:
cman_tool: Cannot open connection to cman, is it running ?
strace shows that it fails here:
connect(3, {sa_family=AF_FILE, path="/var/run/cman_client"}, 110) = -1
ECONNREFUSED (Connection refused)
strace -fp on ccsd shows the same thing, in a loop, like this:
[pid 7670] rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
[pid 7670] rt_sigaction(SIGCHLD, NULL, {SIG_DFL, [], 0}, 8) = 0
[pid 7670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 7670] nanosleep({1, 0}, {1, 0}) = 0
[pid 7670] socket(PF_FILE, SOCK_STREAM, 0) = 9
[pid 7670] fcntl(9, F_SETFD, FD_CLOEXEC) = 0
[pid 7670] connect(9, {sa_family=AF_FILE, path="/var/run/cman_client"}, 110) =
-1 ECONNREFUSED (Connection refused)
[pid 7670] close(9) = 0
Named sockets are there and seem to have the right permissions:
srw------- 1 root root 0 Jul 30 15:21 /var/run/cman_admin=
srw-rw---- 1 root root 0 Jul 30 15:21 /var/run/cman_client=
I've been googling for ideas. I don't really understand what's
supposed to using this named socket to communicate with what,
but I think this is a way for clients to talk to the cman plugin
in aisexec. aisexec seems okay on all my cluster nodes, and they're
all communicating with each other, but I also don't know the right
ways to poke at it to check its health.
I'm continuing to experiment, and Google for ideas, but maybe
someone here can point me in the right direction.
-- Cos
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