Problem running memcached on AMD64 and CentOS 3.6

Brad Fitzpatrick brad at danga.com
Mon Dec 26 23:48:01 UTC 2005


I can't believe nobody has made binaries for CentOS/RHEL yet ... ?  Are
CentOS/RHEL really that irrelevant?  Or maybe people only run Oracle/etc
on those distros?

In any case, I can't help debug this any more.  If anybody on the list has
memcached running on CentOS/RHEL 64-bit, let us know!

- Brad


On Mon, 26 Dec 2005, Jonathan Chong wrote:

> Hi Brad
>
> I don't think it's running. I did a ps -auxww | grep memcached and
> nothing but the grep process came up.
>
> My memcache_test script also failed to connect to memcached.
>
> I did a little experiment and ran it without -d and it failed to
> create the listening connection again.
>
> Thanks for all your help on this, but please let me know if this issue
> is beyong the memcached mailing list.
>
>
>
> On 26/12/05, Brad Fitzpatrick <brad at danga.com> wrote:
> > You ran it with -d, so it daemonized.  It looks like it's running fine.
> >
> >
> > On Mon, 26 Dec 2005, Jonathan Chong wrote:
> >
> > > Hi Brad
> > >
> > > I've been working on this all weekend, and still can't see where the
> > > problem is. I've followed some advice from the libevent list, but that
> > > hasn't resolved the issue.
> > >
> > > I've uninstalled the rpms, and reinstalled libevent and memcached from source.
> > >
> > > This is the strace when I try to run memcached, the error message is
> > > different this time, but memcached is not running.
> > >
> > > execve("/usr/local/bin/memcached", ["/usr/local/bin/memcached", "-d",
> > > "-m", "512", "-p", "11211", "-u", "root"], [/* 25 vars */]) = 0
> > > uname({sys="Linux", node="vps.arsenal-mania.com", ...}) = 0
> > > brk(0)                                  = 0x509000
> > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > 0) = 0x2aaaaaac0000
> > > open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
> > > open("/etc/ld.so.cache", O_RDONLY)      = 3
> > > fstat(3, {st_mode=S_IFREG|0644, st_size=89932, ...}) = 0
> > > mmap(NULL, 89932, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2aaaaaac1000
> > > close(3)                                = 0
> > > open("/usr/local/lib/libevent-1.1a.so.1", O_RDONLY) = 3
> > > read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0,\0\0\0"..., 640) = 640
> > > fstat(3, {st_mode=S_IFREG|0755, st_size=87309, ...}) = 0
> > > mmap(NULL, 1083608, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2aaaaabc1000
> > > mprotect(0x2aaaaabca000, 1046744, PROT_NONE) = 0
> > > mmap(0x2aaaaacc9000, 4096, PROT_READ|PROT_WRITE,
> > > MAP_PRIVATE|MAP_FIXED, 3, 0x8000) = 0x2aaaaacc9000
> > > close(3)                                = 0
> > > open("/lib64/tls/libc.so.6", O_RDONLY)  = 3
> > > read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\322"..., 640) = 640
> > > fstat(3, {st_mode=S_IFREG|0755, st_size=1669760, ...}) = 0
> > > mmap(NULL, 2376104, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2aaaaacca000
> > > mprotect(0x2aaaaae06000, 1081768, PROT_NONE) = 0
> > > mmap(0x2aaaaaf05000, 20480, PROT_READ|PROT_WRITE,
> > > MAP_PRIVATE|MAP_FIXED, 3, 0x13b000) = 0x2aaaaaf05000
> > > mmap(0x2aaaaaf0a000, 16808, PROT_READ|PROT_WRITE,
> > > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2aaaaaf0a000
> > > close(3)                                = 0
> > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > 0) = 0x2aaaaaf0f000
> > > arch_prctl(ARCH_SET_FS, 0x2aaaaaf0f720) = 0
> > > munmap(0x2aaaaaac1000, 89932)           = 0
> > > getrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=1024}) = 0
> > > setrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=1024}) = 0
> > > socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
> > > fcntl(3, F_GETFL)                       = 0x2 (flags O_RDWR)
> > > fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
> > > setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [30064771073], 4) = 0
> > > setsockopt(3, SOL_SOCKET, SO_KEEPALIVE, [30064771073], 4) = 0
> > > setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=0, linger=0}, 8) = 0
> > > bind(3, {sa_family=AF_INET, sin_port=htons(11211),
> > > sin_addr=inet_addr("0.0.0.0")}, 16) = 0
> > > listen(3, 1024)                         = 0
> > > getuid()                                = 0
> > > brk(0)                                  = 0x509000
> > > brk(0x52a000)                           = 0x52a000
> > > brk(0)                                  = 0x52a000
> > > socket(PF_FILE, SOCK_STREAM, 0)         = 4
> > > connect(4, {sa_family=AF_FILE, path="/var/run/.nscd_socket"}, 110) =
> > > -1 ENOENT (No such file or directory)
> > > close(4)                                = 0
> > > open("/etc/nsswitch.conf", O_RDONLY)    = 4
> > > fstat(4, {st_mode=S_IFREG|0644, st_size=1686, ...}) = 0
> > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > 0) = 0x2aaaaaac1000
> > > read(4, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 1686
> > > read(4, "", 4096)                       = 0
> > > close(4)                                = 0
> > > munmap(0x2aaaaaac1000, 4096)            = 0
> > > open("/etc/ld.so.cache", O_RDONLY)      = 4
> > > fstat(4, {st_mode=S_IFREG|0644, st_size=89932, ...}) = 0
> > > mmap(NULL, 89932, PROT_READ, MAP_PRIVATE, 4, 0) = 0x2aaaaaac1000
> > > close(4)                                = 0
> > > open("/lib64/libnss_files.so.2", O_RDONLY) = 4
> > > read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200%\0\0"..., 640) = 640
> > > fstat(4, {st_mode=S_IFREG|0755, st_size=59376, ...}) = 0
> > > mmap(NULL, 1096328, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x2aaaaaf10000
> > > mprotect(0x2aaaaaf1c000, 1047176, PROT_NONE) = 0
> > > mmap(0x2aaaab01b000, 4096, PROT_READ|PROT_WRITE,
> > > MAP_PRIVATE|MAP_FIXED, 4, 0xb000) = 0x2aaaab01b000
> > > close(4)                                = 0
> > > munmap(0x2aaaaaac1000, 89932)           = 0
> > > open("/etc/passwd", O_RDONLY)           = 4
> > > fcntl(4, F_GETFD)                       = 0
> > > fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
> > > fstat(4, {st_mode=S_IFREG|0644, st_size=2118, ...}) = 0
> > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > 0) = 0x2aaaaaac1000
> > > read(4, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 2118
> > > close(4)                                = 0
> > > munmap(0x2aaaaaac1000, 4096)            = 0
> > > setgid(0)                               = 0
> > > setuid(0)                               = 0
> > > clone(child_stack=0,
> > > flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
> > > child_tidptr=0x2aaaaaf0f7b0) = 10940
> > > exit_group(0)                           = ?
> > >
> > > I'd appreciate it if you can shed any light on this.
> > >
> > > Thanks.
> > >
> > >
> > > On 26/12/05, Brad Fitzpatrick <brad at danga.com> wrote:
> > > > Exact same thing:
> > > >
> > > > epoll_ctl_old(0x4, 0x1, 0x3, 0x7fffff8970a0) = -1 ENOSYS (Function not implemented)
> > > >
> > > > My guess is your libevent is using the old 64-bit epoll ABI and CentOS
> > > > phased that out?  You probably have to rebuild libevent to use the newer
> > > > epoll system calls, but I know nothing about that.
> > > >
> > > > - Brad
> > > >
> > > >
> > > > On Mon, 26 Dec 2005, Jonathan Chong wrote:
> > > >
> > > > > If it helps, this is the strace after the changes:
> > > > >
> > > > > execve("/usr/bin/memcached", ["memcached", "-u", "nobody", "-m",
> > > > > "128", "-l", "127.0.0.1", "-p", "11211"], [/* 24 vars */]) = 0
> > > > > uname({sys="Linux", node="vps.arsenal-mania.com", ...}) = 0
> > > > > brk(0)                                  = 0x508000
> > > > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > > > 0) = 0x2aaaaaac0000
> > > > > open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
> > > > > open("/etc/ld.so.cache", O_RDONLY)      = 3
> > > > > fstat(3, {st_mode=S_IFREG|0644, st_size=89977, ...}) = 0
> > > > > mmap(NULL, 89977, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2aaaaaac1000
> > > > > close(3)                                = 0
> > > > > open("/usr/lib64/libevent.so.0", O_RDONLY) = 3
> > > > > read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300)\0\0"..., 640) = 640
> > > > > fstat(3, {st_mode=S_IFREG|0755, st_size=31872, ...}) = 0
> > > > > mmap(NULL, 1079224, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2aaaaabc1000
> > > > > mprotect(0x2aaaaabc9000, 1046456, PROT_NONE) = 0
> > > > > mmap(0x2aaaaacc8000, 4096, PROT_READ|PROT_WRITE,
> > > > > MAP_PRIVATE|MAP_FIXED, 3, 0x7000) = 0x2aaaaacc8000
> > > > > close(3)                                = 0
> > > > > open("/lib64/tls/libc.so.6", O_RDONLY)  = 3
> > > > > read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\322"..., 640) = 640
> > > > > fstat(3, {st_mode=S_IFREG|0755, st_size=1669760, ...}) = 0
> > > > > mmap(NULL, 2376104, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x2aaaaacc9000
> > > > > mprotect(0x2aaaaae05000, 1081768, PROT_NONE) = 0
> > > > > mmap(0x2aaaaaf04000, 20480, PROT_READ|PROT_WRITE,
> > > > > MAP_PRIVATE|MAP_FIXED, 3, 0x13b000) = 0x2aaaaaf04000
> > > > > mmap(0x2aaaaaf09000, 16808, PROT_READ|PROT_WRITE,
> > > > > MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2aaaaaf09000
> > > > > close(3)                                = 0
> > > > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > > > 0) = 0x2aaaaaf0e000
> > > > > arch_prctl(ARCH_SET_FS, 0x2aaaaaf0e720) = 0
> > > > > munmap(0x2aaaaaac1000, 89977)           = 0
> > > > > getrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=1024}) = 0
> > > > > setrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=1024}) = 0
> > > > > socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
> > > > > fcntl(3, F_GETFL)                       = 0x2 (flags O_RDWR)
> > > > > fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK)    = 0
> > > > > setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [30064771073], 4) = 0
> > > > > setsockopt(3, SOL_SOCKET, SO_KEEPALIVE, [30064771073], 4) = 0
> > > > > setsockopt(3, SOL_SOCKET, SO_LINGER, {onoff=0, linger=0}, 8) = 0
> > > > > bind(3, {sa_family=AF_INET, sin_port=htons(11211),
> > > > > sin_addr=inet_addr("127.0.0.1")}, 16) = 0
> > > > > listen(3, 1024)                         = 0
> > > > > getuid()                                = 0
> > > > > brk(0)                                  = 0x508000
> > > > > brk(0x529000)                           = 0x529000
> > > > > brk(0)                                  = 0x529000
> > > > > socket(PF_FILE, SOCK_STREAM, 0)         = 4
> > > > > connect(4, {sa_family=AF_FILE, path="/var/run/.nscd_socket"}, 110) =
> > > > > -1 ENOENT (No such file or directory)
> > > > > close(4)                                = 0
> > > > > open("/etc/nsswitch.conf", O_RDONLY)    = 4
> > > > > fstat(4, {st_mode=S_IFREG|0644, st_size=1686, ...}) = 0
> > > > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > > > 0) = 0x2aaaaaac1000
> > > > > read(4, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 1686
> > > > > read(4, "", 4096)                       = 0
> > > > > close(4)                                = 0
> > > > > munmap(0x2aaaaaac1000, 4096)            = 0
> > > > > open("/etc/ld.so.cache", O_RDONLY)      = 4
> > > > > fstat(4, {st_mode=S_IFREG|0644, st_size=89977, ...}) = 0
> > > > > mmap(NULL, 89977, PROT_READ, MAP_PRIVATE, 4, 0) = 0x2aaaaaac1000
> > > > > close(4)                                = 0
> > > > > open("/lib64/libnss_files.so.2", O_RDONLY) = 4
> > > > > read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200%\0\0"..., 640) = 640
> > > > > fstat(4, {st_mode=S_IFREG|0755, st_size=59376, ...}) = 0
> > > > > mmap(NULL, 1096328, PROT_READ|PROT_EXEC, MAP_PRIVATE, 4, 0) = 0x2aaaaaf0f000
> > > > > mprotect(0x2aaaaaf1b000, 1047176, PROT_NONE) = 0
> > > > > mmap(0x2aaaab01a000, 4096, PROT_READ|PROT_WRITE,
> > > > > MAP_PRIVATE|MAP_FIXED, 4, 0xb000) = 0x2aaaab01a000
> > > > > close(4)                                = 0
> > > > > munmap(0x2aaaaaac1000, 89977)           = 0
> > > > > open("/etc/passwd", O_RDONLY)           = 4
> > > > > fcntl(4, F_GETFD)                       = 0
> > > > > fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
> > > > > fstat(4, {st_mode=S_IFREG|0644, st_size=2118, ...}) = 0
> > > > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > > > 0) = 0x2aaaaaac1000
> > > > > read(4, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 2118
> > > > > close(4)                                = 0
> > > > > munmap(0x2aaaaaac1000, 4096)            = 0
> > > > > setgid(99)                              = 0
> > > > > setuid(99)                              = 0
> > > > > getrlimit(RLIMIT_NOFILE, {rlim_cur=1024, rlim_max=1024}) = 0
> > > > > epoll_create(1024)                      = 4
> > > > > fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
> > > > > socketpair(PF_FILE, SOCK_STREAM, 0, [5, 6]) = 0
> > > > > fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
> > > > > fcntl(6, F_SETFD, FD_CLOEXEC)           = 0
> > > > > mmap(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> > > > > -1, 0) = 0x2aaaab01b000
> > > > > rt_sigaction(SIGPIPE, {SIG_IGN}, NULL, 8) = 0
> > > > > epoll_ctl_old(0x4, 0x1, 0x3, 0x7fffff8970a0) = -1 ENOSYS (Function not
> > > > > implemented)
> > > > > write(2, "failed to create listening conne"..., 37failed to create
> > > > > listening connection) = 37
> > > > > exit_group(1)                           = ?
> > > > >
> > > > >
> > > > > --
> > > > > Jonathan Chong
> > > > >
> > > > > http://www.arsenal-now.com/
> > > > > http://www.arsenal-mania.com/
> > > > > http://www.ashburrn.com/
> > > > > http://www.jonathan-chong.com/
> > > > >
> > > > >
> > > >
> > >
> > >
> > > --
> > > Jonathan Chong
> > >
> > > http://www.arsenal-now.com/
> > > http://www.arsenal-mania.com/
> > > http://www.ashburrn.com/
> > > http://www.jonathan-chong.com/
> > >
> > >
> >
>
>
> --
> Jonathan Chong
>
> http://www.arsenal-now.com/
> http://www.arsenal-mania.com/
> http://www.ashburrn.com/
> http://www.jonathan-chong.com/
>
>


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