Re: [Vserver] support for multicast?
Been doing it for a while over a few versions. Currently I am running :
linux-2.6.14-vs2.1.0-rc1.
The vserver utilities appear to all be from the Mandrake rpms:
util-vserver-lib-0.30.196-1mdk
util-vserver-0.30.196-1
util-vserver-core-0.30.196-1mdk
util-vserver-legacy-0.30.196-1mdk
util-vserver-devel-0.30.196-1mdk
util-vserver-sysv-0.30.196-1mdk
I use to build my own, but I believe these are all I am using now. It's
fedora core 4 host and client. One sidenote was that it was critical for
us to have the hostname of the vserver in its /etc/hosts file for tomcat
to start properly. Tomcat is 5.5.9 and is not looked after by me, but by
the consultants that run in the vserver :).
JES
Drew Lippolt wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
interesting. i tried exactly this (minus 1/2 the capabilities), with
both the old and new configs.
can you comment on your kernel and vs version, and if you are using a
distro supplied binaries? (aka vs utils out of debian sarge)
thanks,
On Nov 26, 2005, at 3:52 PM, James B. MacLean wrote:
Sorry I am joining this late. Also sorry that I am top posting :(.
But we do the tomcat multicast clustering here and it was just as
you had attempted. We run legacy mode and have :
IPROOT="eth0:192.168.129.234 228.0.0.4"
S_CAPS="CAP_KILL CAP_SETGID CAP_SETUID CAP_SETPCAP CAP_NET_BROADCAST
CAP_SYS_NICE CAP_NET_ADMIN"
Probably added too many capabilities, but security is not the issue,
just being able to run in a vserver :).
Yes on start the vserver spews out stuff, but the multicast was
needed in the conf file.
Hope this helps,
JES
Drew Lippolt wrote:
i've upgraded to:
kernel 2.6.12.5
vs 2.0
i'm still getting the same problem as before.
and believe i have narrowed the multicast problem.
strangely, i can SEND/BROADCAST no problem. i say strange since
the creation of the mutlicast group is more complicated than
simply consuming the broadcast.
running inside the vserver, the multicast client never sees traffic.
i can run the broadcaster inside the vserver and talk to adjacent
receivers on other physical boxes.
but when i run mutlicast test code for RECEIVING multicast inside
a vserver strace shows:
[EMAIL PROTECTED]:~/try2$ strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 13
vars */]) = 0
uname({sys="Linux", node="v237", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7fb7000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file
or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8305, ...}) = 0
old_mmap(NULL, 8305, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fb4000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1
\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7e7f000
old_mmap(0xb7fa9000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7fa9000
old_mmap(0xb7fb2000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fb2000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7e7e000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e7e460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7fb4000, 8305)= 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210),
sin_addr=inet_addr ("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3,
when running receiver code OUTSIDE the vserver (in the base host)
app2:/vservers/v237/home/mcaster/try2# strace ./multirec 224.0.0.9
9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 17
vars */]) = 0
uname({sys="Linux", node="app2.moverotech.com", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7ef2000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file
or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10985, ...}) = 0
old_mmap(NULL, 10985, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eef000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/lib/tls
Re: [Vserver] support for multicast?
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
interesting. i tried exactly this (minus 1/2 the capabilities), with
both the old and new configs.
can you comment on your kernel and vs version, and if you are using a
distro supplied binaries? (aka vs utils out of debian sarge)
thanks,
On Nov 26, 2005, at 3:52 PM, James B. MacLean wrote:
Sorry I am joining this late. Also sorry that I am top posting :(.
But we do the tomcat multicast clustering here and it was just as
you had attempted. We run legacy mode and have :
IPROOT="eth0:192.168.129.234 228.0.0.4"
S_CAPS="CAP_KILL CAP_SETGID CAP_SETUID CAP_SETPCAP
CAP_NET_BROADCAST CAP_SYS_NICE CAP_NET_ADMIN"
Probably added too many capabilities, but security is not the
issue, just being able to run in a vserver :).
Yes on start the vserver spews out stuff, but the multicast was
needed in the conf file.
Hope this helps,
JES
Drew Lippolt wrote:
i've upgraded to:
kernel 2.6.12.5
vs 2.0
i'm still getting the same problem as before.
and believe i have narrowed the multicast problem.
strangely, i can SEND/BROADCAST no problem. i say strange since
the creation of the mutlicast group is more complicated than
simply consuming the broadcast.
running inside the vserver, the multicast client never sees traffic.
i can run the broadcaster inside the vserver and talk to adjacent
receivers on other physical boxes.
but when i run mutlicast test code for RECEIVING multicast inside
a vserver strace shows:
[EMAIL PROTECTED]:~/try2$ strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 13
vars */]) = 0
uname({sys="Linux", node="v237", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7fb7000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file
or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8305, ...}) = 0
old_mmap(NULL, 8305, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fb4000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1
\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7e7f000
old_mmap(0xb7fa9000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7fa9000
old_mmap(0xb7fb2000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fb2000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7e7e000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e7e460,
limit: 1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 0
munmap(0xb7fb4000, 8305)= 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210),
sin_addr=inet_addr ("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3,
when running receiver code OUTSIDE the vserver (in the base host)
app2:/vservers/v237/home/mcaster/try2# strace ./multirec 224.0.0.9
9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 17
vars */]) = 0
uname({sys="Linux", node="app2.moverotech.com", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7ef2000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file
or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10985, ...}) = 0
old_mmap(NULL, 10985, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eef000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file
or directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1
\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7dba000
old_mmap(0xb7ee4000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7ee4000
old_mmap(0xb7eed000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7eed000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_ANONYMOUS, -1, 0) = 0xb7db9000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7db9460,
limit: 1048575, seg_32bit:1, contents:0, read_exec_
Re: [Vserver] support for multicast?
Sorry I am joining this late. Also sorry that I am top posting :(. But
we do the tomcat multicast clustering here and it was just as you had
attempted. We run legacy mode and have :
IPROOT="eth0:192.168.129.234 228.0.0.4"
S_CAPS="CAP_KILL CAP_SETGID CAP_SETUID CAP_SETPCAP CAP_NET_BROADCAST
CAP_SYS_NICE CAP_NET_ADMIN"
Probably added too many capabilities, but security is not the issue,
just being able to run in a vserver :).
Yes on start the vserver spews out stuff, but the multicast was needed
in the conf file.
Hope this helps,
JES
Drew Lippolt wrote:
i've upgraded to:
kernel 2.6.12.5
vs 2.0
i'm still getting the same problem as before.
and believe i have narrowed the multicast problem.
strangely, i can SEND/BROADCAST no problem. i say strange since the
creation of the mutlicast group is more complicated than simply
consuming the broadcast.
running inside the vserver, the multicast client never sees traffic.
i can run the broadcaster inside the vserver and talk to adjacent
receivers on other physical boxes.
but when i run mutlicast test code for RECEIVING multicast inside a
vserver strace shows:
[EMAIL PROTECTED]:~/try2$ strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 13 vars
*/]) = 0
uname({sys="Linux", node="v237", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7fb7000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8305, ...}) = 0
old_mmap(NULL, 8305, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fb4000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7e7f000
old_mmap(0xb7fa9000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7fa9000
old_mmap(0xb7fb2000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fb2000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7e7e000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e7e460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
munmap(0xb7fb4000, 8305)= 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210), sin_addr=inet_addr
("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3,
when running receiver code OUTSIDE the vserver (in the base host)
app2:/vservers/v237/home/mcaster/try2# strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 17 vars
*/]) = 0
uname({sys="Linux", node="app2.moverotech.com", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7ef2000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10985, ...}) = 0
old_mmap(NULL, 10985, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eef000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7dba000
old_mmap(0xb7ee4000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7ee4000
old_mmap(0xb7eed000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7eed000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7db9000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7db9460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
munmap(0xb7eef000, 10985) = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210), sin_addr=inet_addr
("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3, "testtest", 255, 0, NULL, NULL) = 8
time(NULL)
Re: [Vserver] support for multicast?
after making the nodev addition, and switching interface 0 with
interface 1 (i.e. making multicast ip the first one)
here is the SENDER strace:
[EMAIL PROTECTED]:~/try2$ strace ./multisnd 224.0.0.9 9210 testtest 2
execve("./multisnd", ["./multisnd", "224.0.0.9", "9210", "testtest",
"2"], [/* 13 vars */]) = 0
uname({sys="Linux", node="v237", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7fa4000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8305, ...}) = 0
old_mmap(NULL, 8305, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fa1000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7e6c000
old_mmap(0xb7f96000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7f96000
old_mmap(0xb7f9f000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7f9f000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7e6b000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e6b460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
munmap(0xb7fa1000, 8305)= 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
setsockopt(3, SOL_IP, IP_MULTICAST_TTL, "\2", 1) = 0
sendto(3, "testtest", 8, 0, {sa_family=AF_INET, sin_port=htons(9210),
sin_addr=inet_addr("224.0.0.9")}, 16) = 8
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
nanosleep({3, 0}, {3, 0}) = 0
sendto(3, "testtest", 8, 0, {sa_family=AF_INET, sin_port=htons(9210),
sin_addr=inet_addr("224.0.0.9")}, 16) = 8
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
nanosleep({3, 0}, {3, 0}) = 0
sendto(3, "testtest", 8, 0, {sa_family=AF_INET, sin_port=htons(9210),
sin_addr=inet_addr("224.0.0.9")}, 16) = 8
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
nanosleep({3, 0}, {3, 0}) = 0
sendto(3, "testtest", 8, 0, {sa_family=AF_INET, sin_port=htons(9210),
sin_addr=inet_addr("224.0.0.9")}, 16) = 8
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGCHLD, NULL, {SIG_DFL}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
nanosleep({3, 0},
here is the RECEIVER strace:
[EMAIL PROTECTED]:~/try2$ strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 13 vars
*/]) = 0
uname({sys="Linux", node="v237", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7fbc000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8305, ...}) = 0
old_mmap(NULL, 8305, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fb9000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7e84000
old_mmap(0xb7fae000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7fae000
old_mmap(0xb7fb7000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fb7000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7e83000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e83460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
munmap(0xb7fb9000, 8305)= 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210), sin_addr=inet_addr
("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3,
and for completeness, here is the RECEIVER strace when run from the
Re: [Vserver] support for multicast?
i've upgraded to:
kernel 2.6.12.5
vs 2.0
i'm still getting the same problem as before.
and believe i have narrowed the multicast problem.
strangely, i can SEND/BROADCAST no problem. i say strange since the
creation of the mutlicast group is more complicated than simply
consuming the broadcast.
running inside the vserver, the multicast client never sees traffic.
i can run the broadcaster inside the vserver and talk to adjacent
receivers on other physical boxes.
but when i run mutlicast test code for RECEIVING multicast inside a
vserver strace shows:
[EMAIL PROTECTED]:~/try2$ strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 13 vars
*/]) = 0
uname({sys="Linux", node="v237", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7fb7000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=8305, ...}) = 0
old_mmap(NULL, 8305, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fb4000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7e7f000
old_mmap(0xb7fa9000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7fa9000
old_mmap(0xb7fb2000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fb2000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7e7e000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7e7e460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
munmap(0xb7fb4000, 8305)= 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210), sin_addr=inet_addr
("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3,
when running receiver code OUTSIDE the vserver (in the base host)
app2:/vservers/v237/home/mcaster/try2# strace ./multirec 224.0.0.9 9210
execve("./multirec", ["./multirec", "224.0.0.9", "9210"], [/* 17 vars
*/]) = 0
uname({sys="Linux", node="app2.moverotech.com", ...}) = 0
brk(0) = 0x804a000
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7ef2000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.preload", O_RDONLY)= -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=10985, ...}) = 0
old_mmap(NULL, 10985, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7eef000
close(3)= 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)
open("/lib/tls/libc.so.6", O_RDONLY)= 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`Z\1\000"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1254468, ...}) = 0
old_mmap(NULL, 1264780, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
0xb7dba000
old_mmap(0xb7ee4000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED, 3, 0x129000) = 0xb7ee4000
old_mmap(0xb7eed000, 7308, PROT_READ|PROT_WRITE, MAP_PRIVATE|
MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7eed000
close(3)= 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7db9000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7db9460, limit:
1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1,
seg_not_present:0, useable:1}) = 0
munmap(0xb7eef000, 10985) = 0
socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3
bind(3, {sa_family=AF_INET, sin_port=htons(9210), sin_addr=inet_addr
("0.0.0.0")}, 16) = 0
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\t\0\0\0\0", 8) = 0
recvfrom(3, "testtest", 255, 0, NULL, NULL) = 8
time(NULL) = 1132896911
brk(0) = 0x804a000
brk(0x806b000) = 0x806b000
brk(0) = 0x806b000
open("/etc/localtime", O_RDONLY)= 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=1279, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7ef1000
read(4, "TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\5\0\0\0\5\0"...,
4096) = 1279
close(4)= 0
munmap(0xb7ef1000, 4096)= 0
fstat64(1, {st_mode=S_IFCHR
Re: [Vserver] support for multicast?
On Nov 15, 2005, at 7:11 PM, Herbert Poetzl wrote: On Mon, Nov 14, 2005 at 03:09:32AM -0600, Drew Lippolt wrote: QUESTION: what is the current story with multicast support for both sending and receiving multicast traffic? BACKGROUND: trying to get tomcat clustering working in vserver. http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html DETAILS: [EMAIL PROTECTED] opt]# cat /proc/version Linux version 2.4.30-vs1.2.10 ([EMAIL PROTECTED]) (gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52)) #1 Wed Aug 10 01:27:44 CDT 2005 [EMAIL PROTECTED] opt]# grep MULTICAST /boot/config-2.4.30-vs1.2.10 CONFIG_IP_MULTICAST=y tomcat 5.5.12 i'm running debian sarge vservers on redhat enterprise linux 3.0 boxes at rackspace, using a stock kernel.org kernel with required tweaks for my hardware this is a production environment which has been supporting many apps beautifully for 3 months. the basic idea is that i have multiple app layer boxes, which i want to distribute tomcat clusters. single instance of tomcat, running in a single vserver, per real host, per application. so if i have 3 apps, on 3 real servers, i'd have 9 total vservers across 3 clusters. i'm not even getting that far. my test setup is 2 real hosts, each with one vserver with an 'out of the box' tomcat cluster config. the tomcat instances aren't finding each other. the stacktraces i'm getting on tomcat --shutdown-- are as follows, which doesn't look all that interesting, its in code looking for incoming connections on a tcp port, which never arrive, since the mcast conversation never happens (ReplicationListener.java:130): SEVERE: Unable to process request in ReplicationListener java.nio.channels.ClosedSelectorException at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java: 55) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:70) at org.apache.catalina.cluster.tcp.ReplicationListener.listen (ReplicationListener.java:130) at org.apache.catalina.cluster.tcp.ClusterReceiverBase.run (ClusterReceiverBase.java:394) at java.lang.Thread.run(Thread.java:534) THINGS I"VE TRIED: * add multicast ip to IPROOT. this just causes barf messages at vserver startup Starting the virtual server v208 Server v208 is not running SIOCSIFADDR: Invalid argument SIOCSIFFLAGS: Cannot assign requested address SIOCSIFNETMASK: Cannot assign requested address SIOCGIFADDR: Cannot assign requested address SIOCSIFBROADCAST: Cannot assign requested address SIOCSIFBRDADDR: Cannot assign requested address SIOCSIFFLAGS: Cannot assign requested address ipv4root is now 192.168.1.208 228.0.0.4 how did you add it? tried a few different ways. IPROOT="192.168.1.237 228.0.0.4" IPROOT="192.168.1.237 228.0.0.4/224.0.0.0" * enabled NET_ADMIN and NET_BROADCAST. this offers no change well, NET_ADMIN is what you probably need for multicasting, NET_BROADCAST should suffice for multicast reception ... the following are true, with NET_ADMIN, NET_BROADCAST, NET_RAW, SYS_ADMIN all set * clustering tool's test case suggests i'm SENDING multicast traffic, but not RECEIVING * tcpdump suggests i'm SENDING but not RECIEVING * i can ping the multicast address from the shell while the app server is running, but not when its not running * adding routes doesn't seem to effect it at all if you are interested in 'improving' multicast capabilities in a safe way, and willing to do some testing, please contact me on the IRC channel ... i'm down for whatever. i have a good testbed. i just missed you on irc tonight. will try againtomorrow. best, Herbert PS: will require switching to 2.6 kernel and recent devel version (2.1.x) i'm planning on moving to 2.6 anyway. we can chat about the 2.1.x stuff. ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] support for multicast?
On Mon, Nov 14, 2005 at 03:09:32AM -0600, Drew Lippolt wrote: > > QUESTION: what is the current story with multicast support for both > sending and receiving multicast traffic? > > BACKGROUND: > > trying to get tomcat clustering working in vserver. > > http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html > > DETAILS: > > [EMAIL PROTECTED] opt]# cat /proc/version > Linux version 2.4.30-vs1.2.10 ([EMAIL PROTECTED]) (gcc version > 3.2.3 20030502 (Red Hat Linux 3.2.3-52)) #1 Wed Aug 10 01:27:44 CDT 2005 > > [EMAIL PROTECTED] opt]# grep MULTICAST /boot/config-2.4.30-vs1.2.10 > CONFIG_IP_MULTICAST=y > > tomcat 5.5.12 > > i'm running debian sarge vservers on redhat enterprise linux 3.0 > boxes at rackspace, using a stock kernel.org kernel with required > tweaks for my hardware this is a production environment which has > been supporting many apps beautifully for 3 months. > > the basic idea is that i have multiple app layer boxes, which i want > to distribute tomcat clusters. single instance of tomcat, running in > a single vserver, per real host, per application. so if i have 3 > apps, on 3 real servers, i'd have 9 total vservers across 3 > clusters. i'm not even getting that far. my test setup is 2 real > hosts, each with one vserver with an 'out of the box' tomcat cluster > config. the tomcat instances aren't finding each other. > > the stacktraces i'm getting on tomcat --shutdown-- are as follows, > which doesn't look all that interesting, its in code looking for > incoming connections on a tcp port, which never arrive, since the > mcast conversation never happens (ReplicationListener.java:130): > > SEVERE: Unable to process request in ReplicationListener > java.nio.channels.ClosedSelectorException > at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java: > 55) > at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:70) > at org.apache.catalina.cluster.tcp.ReplicationListener.listen > (ReplicationListener.java:130) > at org.apache.catalina.cluster.tcp.ClusterReceiverBase.run > (ClusterReceiverBase.java:394) > at java.lang.Thread.run(Thread.java:534) > > > THINGS I"VE TRIED: > > * add multicast ip to IPROOT. this just causes barf messages at > vserver startup > > Starting the virtual server v208 > Server v208 is not running > SIOCSIFADDR: Invalid argument > SIOCSIFFLAGS: Cannot assign requested address > SIOCSIFNETMASK: Cannot assign requested address > SIOCGIFADDR: Cannot assign requested address > SIOCSIFBROADCAST: Cannot assign requested address > SIOCSIFBRDADDR: Cannot assign requested address > SIOCSIFFLAGS: Cannot assign requested address > ipv4root is now 192.168.1.208 228.0.0.4 how did you add it? > * enabled NET_ADMIN and NET_BROADCAST. this offers no change well, NET_ADMIN is what you probably need for multicasting, NET_BROADCAST should suffice for multicast reception ... if you are interested in 'improving' multicast capabilities in a safe way, and willing to do some testing, please contact me on the IRC channel ... best, Herbert PS: will require switching to 2.6 kernel and recent devel version (2.1.x) > * googling for multicast setup on vserver. almost zero info. > > http://www.paul.sladen.org/vserver/archives/200205/0090.html (no > response) > > http://list.linux-vserver.org/archive/vserver/msg08171.html (some > progress, no resolution) > > * searching for multicast in vserver irc logs, almost zero info. > > as usual, thanks in advance for any information. > > take care, > > > ___ > Vserver mailing list > Vserver@list.linux-vserver.org > http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
Re: [Vserver] support for multicast?
i've not gotten any farther. any ideas? On Nov 14, 2005, at 3:09 AM, Drew Lippolt wrote: QUESTION: what is the current story with multicast support for both sending and receiving multicast traffic? BACKGROUND: trying to get tomcat clustering working in vserver. http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html DETAILS: [EMAIL PROTECTED] opt]# cat /proc/version Linux version 2.4.30-vs1.2.10 ([EMAIL PROTECTED]) (gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52)) #1 Wed Aug 10 01:27:44 CDT 2005 [EMAIL PROTECTED] opt]# grep MULTICAST /boot/config-2.4.30-vs1.2.10 CONFIG_IP_MULTICAST=y tomcat 5.5.12 i'm running debian sarge vservers on redhat enterprise linux 3.0 boxes at rackspace, using a stock kernel.org kernel with required tweaks for my hardware this is a production environment which has been supporting many apps beautifully for 3 months. the basic idea is that i have multiple app layer boxes, which i want to distribute tomcat clusters. single instance of tomcat, running in a single vserver, per real host, per application. so if i have 3 apps, on 3 real servers, i'd have 9 total vservers across 3 clusters. i'm not even getting that far. my test setup is 2 real hosts, each with one vserver with an 'out of the box' tomcat cluster config. the tomcat instances aren't finding each other. the stacktraces i'm getting on tomcat --shutdown-- are as follows, which doesn't look all that interesting, its in code looking for incoming connections on a tcp port, which never arrive, since the mcast conversation never happens (ReplicationListener.java:130): SEVERE: Unable to process request in ReplicationListener java.nio.channels.ClosedSelectorException at sun.nio.ch.SelectorImpl.lockAndDoSelect (SelectorImpl.java:55) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:70) at org.apache.catalina.cluster.tcp.ReplicationListener.listen (ReplicationListener.java:130) at org.apache.catalina.cluster.tcp.ClusterReceiverBase.run (ClusterReceiverBase.java:394) at java.lang.Thread.run(Thread.java:534) THINGS I"VE TRIED: * add multicast ip to IPROOT. this just causes barf messages at vserver startup Starting the virtual server v208 Server v208 is not running SIOCSIFADDR: Invalid argument SIOCSIFFLAGS: Cannot assign requested address SIOCSIFNETMASK: Cannot assign requested address SIOCGIFADDR: Cannot assign requested address SIOCSIFBROADCAST: Cannot assign requested address SIOCSIFBRDADDR: Cannot assign requested address SIOCSIFFLAGS: Cannot assign requested address ipv4root is now 192.168.1.208 228.0.0.4 * enabled NET_ADMIN and NET_BROADCAST. this offers no change * googling for multicast setup on vserver. almost zero info. http://www.paul.sladen.org/vserver/archives/200205/0090.html (no response) http://list.linux-vserver.org/archive/vserver/msg08171.html (some progress, no resolution) * searching for multicast in vserver irc logs, almost zero info. as usual, thanks in advance for any information. take care, ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
[Vserver] support for multicast?
QUESTION: what is the current story with multicast support for both sending and receiving multicast traffic? BACKGROUND: trying to get tomcat clustering working in vserver. http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html DETAILS: [EMAIL PROTECTED] opt]# cat /proc/version Linux version 2.4.30-vs1.2.10 ([EMAIL PROTECTED]) (gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52)) #1 Wed Aug 10 01:27:44 CDT 2005 [EMAIL PROTECTED] opt]# grep MULTICAST /boot/config-2.4.30-vs1.2.10 CONFIG_IP_MULTICAST=y tomcat 5.5.12 i'm running debian sarge vservers on redhat enterprise linux 3.0 boxes at rackspace, using a stock kernel.org kernel with required tweaks for my hardware this is a production environment which has been supporting many apps beautifully for 3 months. the basic idea is that i have multiple app layer boxes, which i want to distribute tomcat clusters. single instance of tomcat, running in a single vserver, per real host, per application. so if i have 3 apps, on 3 real servers, i'd have 9 total vservers across 3 clusters. i'm not even getting that far. my test setup is 2 real hosts, each with one vserver with an 'out of the box' tomcat cluster config. the tomcat instances aren't finding each other. the stacktraces i'm getting on tomcat --shutdown-- are as follows, which doesn't look all that interesting, its in code looking for incoming connections on a tcp port, which never arrive, since the mcast conversation never happens (ReplicationListener.java:130): SEVERE: Unable to process request in ReplicationListener java.nio.channels.ClosedSelectorException at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java: 55) at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:70) at org.apache.catalina.cluster.tcp.ReplicationListener.listen (ReplicationListener.java:130) at org.apache.catalina.cluster.tcp.ClusterReceiverBase.run (ClusterReceiverBase.java:394) at java.lang.Thread.run(Thread.java:534) THINGS I"VE TRIED: * add multicast ip to IPROOT. this just causes barf messages at vserver startup Starting the virtual server v208 Server v208 is not running SIOCSIFADDR: Invalid argument SIOCSIFFLAGS: Cannot assign requested address SIOCSIFNETMASK: Cannot assign requested address SIOCGIFADDR: Cannot assign requested address SIOCSIFBROADCAST: Cannot assign requested address SIOCSIFBRDADDR: Cannot assign requested address SIOCSIFFLAGS: Cannot assign requested address ipv4root is now 192.168.1.208 228.0.0.4 * enabled NET_ADMIN and NET_BROADCAST. this offers no change * googling for multicast setup on vserver. almost zero info. http://www.paul.sladen.org/vserver/archives/200205/0090.html (no response) http://list.linux-vserver.org/archive/vserver/msg08171.html (some progress, no resolution) * searching for multicast in vserver irc logs, almost zero info. as usual, thanks in advance for any information. take care, ___ Vserver mailing list Vserver@list.linux-vserver.org http://list.linux-vserver.org/mailman/listinfo/vserver
