Strange moxi behaviour with couchbase community edition 4.0

Couchbase Server
1

Hello there! I have noticed strange behavior of moxi, it seems to be a bug. May be anyone had seen something like this?

In log is looks like:

Service '{moxi,"11244"}' exited with status 134. Restarting. Messages: /opt/couchbase/bin/moxi() [0x40e1a7]
/opt/couchbase/bin/../lib/libevent_core-2.0.so.5(event_base_loop+0x678) [0x7fe78e75b488]
/opt/couchbase/bin/../lib/libplatform.so.0.1.0() [0x7fe78eb8ebb8]
/lib64/libpthread.so.0() [0x7fe78da72aa1]
/lib64/libc.so.6(clone+0x6d) [0x7fe78cd2693d]

Core dump:

File information:
-rwxr-xr-x 1 couchbase couchbase 351624 Sep 18 2015 /opt/couchbase/bin/moxi
7bfcfb865c555a725f879fc74787dd6a /opt/couchbase/bin/moxi
-rw------- 1 couchbase couchbase 119468032 Mar 27 23:24 /opt/couchbase/var/lib/couchbase/core.8856
b3fa6164bd8040c794e9865de12e6465 /opt/couchbase/var/lib/couchbase/core.8856

Core file callstacks:
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-83.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type “show copying”
and “show warranty” for details.
This GDB was configured as “x86_64-redhat-linux-gnu”.
For bug reporting instructions, please see:
http://www.gnu.org/software/gdb/bugs/…
Reading symbols from /opt/couchbase/bin/moxi…(no debugging symbols found)…done.
[New Thread 8860]
[New Thread 8862]
[New Thread 8861]
[New Thread 8856]
[New Thread 8863]
[New Thread 8858]
[New Thread 8857]
[New Thread 8859]
Reading symbols from /opt/couchbase/bin/…/lib/libconflate.so.1.0.0…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libconflate.so.1.0.0
Reading symbols from /opt/couchbase/bin/…/lib/libvbucket.so.1.1.1…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libvbucket.so.1.1.1
Reading symbols from /opt/couchbase/bin/…/lib/libplatform.so.0.1.0…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
Reading symbols from /opt/couchbase/bin/…/lib/libmcd.so.6.1.0…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libmcd.so.6.1.0
Reading symbols from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
Reading symbols from /opt/couchbase/bin/…/lib/libcurl.so.4…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libcurl.so.4
Reading symbols from /lib64/libz.so.1…(no debugging symbols found)…done.
Loaded symbols for /lib64/libz.so.1
Reading symbols from /usr/lib64/libssl.so.10…(no debugging symbols found)…done.
Loaded symbols for /usr/lib64/libssl.so.10
Reading symbols from /usr/lib64/libcrypto.so.10…(no debugging symbols found)…done.
Loaded symbols for /usr/lib64/libcrypto.so.10
Reading symbols from /lib64/libpthread.so.0…(no debugging symbols found)…done.
[Thread debugging using libthread_db enabled]
Loaded symbols for /lib64/libpthread.so.0
Reading symbols from /lib64/libdl.so.2…(no debugging symbols found)…done.
Loaded symbols for /lib64/libdl.so.2
Reading symbols from /lib64/librt.so.1…(no debugging symbols found)…done.
Loaded symbols for /lib64/librt.so.1
Reading symbols from /opt/couchbase/bin/…/lib/libcJSON.so.1.0.0…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libcJSON.so.1.0.0
Reading symbols from /opt/couchbase/bin/…/lib/libhashkit.so.1.0.0…(no debugging symbols found)…done.
Loaded symbols for /opt/couchbase/bin/…/lib/libhashkit.so.1.0.0
Reading symbols from /lib64/libm.so.6…(no debugging symbols found)…done.
Loaded symbols for /lib64/libm.so.6
Reading symbols from /lib64/libc.so.6…(no debugging symbols found)…done.
Loaded symbols for /lib64/libc.so.6
Reading symbols from /usr/lib64/libstdc++.so.6…(no debugging symbols found)…done.
Loaded symbols for /usr/lib64/libstdc++.so.6
Reading symbols from /lib64/libgcc_s.so.1…(no debugging symbols found)…done.
Loaded symbols for /lib64/libgcc_s.so.1
Reading symbols from /lib64/libgssapi_krb5.so.2…(no debugging symbols found)…done.
Loaded symbols for /lib64/libgssapi_krb5.so.2
Reading symbols from /lib64/libkrb5.so.3…(no debugging symbols found)…done.
Loaded symbols for /lib64/libkrb5.so.3
Reading symbols from /lib64/libcom_err.so.2…(no debugging symbols found)…done.
Loaded symbols for /lib64/libcom_err.so.2
Reading symbols from /lib64/libk5crypto.so.3…(no debugging symbols found)…done.
Loaded symbols for /lib64/libk5crypto.so.3
Reading symbols from /lib64/ld-linux-x86-64.so.2…(no debugging symbols found)…done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /lib64/libkrb5support.so.0…(no debugging symbols found)…done.
Loaded symbols for /lib64/libkrb5support.so.0
Reading symbols from /lib64/libkeyutils.so.1…(no debugging symbols found)…done.
Loaded symbols for /lib64/libkeyutils.so.1
Reading symbols from /lib64/libresolv.so.2…(no debugging symbols found)…done.
Loaded symbols for /lib64/libresolv.so.2
Reading symbols from /lib64/libselinux.so.1…(no debugging symbols found)…done.
Loaded symbols for /lib64/libselinux.so.1

warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffd533a9000
Core was generated by `/opt/couchbase/bin/moxi -B auto -z url=http://127.0.0.1:8091/pools/default/buck’.
Program terminated with signal 6, Aborted.
#0 0x00007f1290124625 in raise () from /lib64/libc.so.6

Thread 8 (Thread 0x7f128d631700 (LWP 8859)):
#0 0x00007f12901daf33 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f1291c20e93 in ?? () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#2 0x00007f1291c0df42 in event_base_loop () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#3 0x00007f1292041bb8 in ?? () from /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
#4 0x00007f1290f26a51 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f12901da93d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f128ea33700 (LWP 8857)):
#0 0x00007f12901daf33 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f1291c20e93 in ?? () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#2 0x00007f1291c0df42 in event_base_loop () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#3 0x00007f1292041bb8 in ?? () from /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
#4 0x00007f1290f26a51 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f12901da93d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f128e032700 (LWP 8858)):
#0 0x00007f12901daf33 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f1291c20e93 in ?? () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#2 0x00007f1291c0df42 in event_base_loop () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#3 0x00007f1292041bb8 in ?? () from /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
#4 0x00007f1290f26a51 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f12901da93d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f128ae2d700 (LWP 8863)):
#0 0x00007f12901cd51d in read () from /lib64/libc.so.6
#1 0x00007f1290163ce8 in _IO_new_file_underflow () from /lib64/libc.so.6
#2 0x00007f12901657ee in _IO_default_uflow_internal () from /lib64/libc.so.6
#3 0x00007f1290160cdb in getc () from /lib64/libc.so.6
#4 0x0000000000432646 in _start ()

Thread 4 (Thread 0x7f12928597e0 (LWP 8856)):
#0 0x00007f12901daf33 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f1291c20e93 in ?? () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#2 0x00007f1291c0df42 in event_base_loop () from /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
#3 0x000000000040469d in ?? ()
#4 0x00007f1290110d5d in __libc_start_main () from /lib64/libc.so.6
#5 0x0000000000404df9 in _start ()

Thread 3 (Thread 0x7f128c22f700 (LWP 8861)):
#0 0x00007f1290f2a63c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x0000000000412a4b in _start ()

Thread 2 (Thread 0x7f128b82e700 (LWP 8862)):
#0 0x00007f12901d1113 in poll () from /lib64/libc.so.6
#1 0x00007f12919d48f9 in ?? () from /opt/couchbase/bin/…/lib/libcurl.so.4
#2 0x00007f12919cfdcc in curl_multi_wait () from /opt/couchbase/bin/…/lib/libcurl.so.4
#3 0x00007f12919ca4f7 in curl_easy_perform () from /opt/couchbase/bin/…/lib/libcurl.so.4
#4 0x00007f129244d7c0 in ?? () from /opt/couchbase/bin/…/lib/libconflate.so.1.0.0
#5 0x00007f1292041bb8 in ?? () from /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
#6 0x00007f1290f26a51 in start_thread () from /lib64/libpthread.so.0
#7 0x00007f12901da93d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f128cc30700 (LWP 8860)):
#0 0x00007f1290124625 in raise () from /lib64/libc.so.6
#1 0x00007f1290125e05 in abort () from /lib64/libc.so.6
#2 0x00007f1292042806 in cb_assert_die () from /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
#3 0x000000000041dac9 in _start ()

Module information:
/opt/couchbase/bin/…/lib/libconflate.so.1.0.0:
-rwxr-xr-x 1 couchbase couchbase 17472 Sep 18 2015 /opt/couchbase/bin/…/lib/libconflate.so.1.0.0
57ddf03a86d802ede0e2932b86481498 /opt/couchbase/bin/…/lib/libconflate.so.1.0.0
/opt/couchbase/bin/…/lib/libvbucket.so.1.1.1:
-rwxr-xr-x 1 couchbase couchbase 29272 Sep 18 2015 /opt/couchbase/bin/…/lib/libvbucket.so.1.1.1
c83ba39b5d9808ef198ea15661e27595 /opt/couchbase/bin/…/lib/libvbucket.so.1.1.1
/opt/couchbase/bin/…/lib/libplatform.so.0.1.0:
-rwxr-xr-x 1 couchbase couchbase 20888 Sep 18 2015 /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
72dc60e164e5eaec3e8f755001916cad /opt/couchbase/bin/…/lib/libplatform.so.0.1.0
/opt/couchbase/bin/…/lib/libmcd.so.6.1.0:
-rwxr-xr-x 1 couchbase couchbase 77392 Sep 18 2015 /opt/couchbase/bin/…/lib/libmcd.so.6.1.0
28678e7ca2c5a116bc5e3193923f50c9 /opt/couchbase/bin/…/lib/libmcd.so.6.1.0
/opt/couchbase/bin/…/lib/libevent_core-2.0.so.5:
lrwxrwxrwx 1 couchbase couchbase 27 Mar 21 12:34 /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5 → libevent_core-2.0.so.5.1.10
15951413b6aef7b7fee70b11c4d4f893 /opt/couchbase/bin/…/lib/libevent_core-2.0.so.5
/opt/couchbase/bin/…/lib/libcurl.so.4:
lrwxrwxrwx 1 couchbase couchbase 16 Mar 21 12:34 /opt/couchbase/bin/…/lib/libcurl.so.4 → libcurl.so.4.3.0
410da6adcaa1599dc545ddde4a36bbbb /opt/couchbase/bin/…/lib/libcurl.so.4
/lib64/libz.so.1:
lrwxrwxrwx 1 root root 13 Feb 10 11:54 /lib64/libz.so.1 → libz.so.1.2.3
e8ac93fdb47f4beb4560abee1ae5f0da /lib64/libz.so.1
/usr/lib64/libssl.so.10:
lrwxrwxrwx 1 root root 16 Feb 10 11:54 /usr/lib64/libssl.so.10 → libssl.so.1.0.1e
f69f7203878b92292c904e57e23db241 /usr/lib64/libssl.so.10
/usr/lib64/libcrypto.so.10:
lrwxrwxrwx 1 root root 19 Feb 10 11:54 /usr/lib64/libcrypto.so.10 → libcrypto.so.1.0.1e
a34308182d2ffc0e5297066489fcf7a3 /usr/lib64/libcrypto.so.10
/lib64/libpthread.so.0:
lrwxrwxrwx 1 root root 18 Feb 10 11:54 /lib64/libpthread.so.0 → libpthread-2.12.so
6c10973a3f46caf6cfd96513f8271e9f /lib64/libpthread.so.0
/lib64/libdl.so.2:
lrwxrwxrwx 1 root root 13 Feb 10 11:54 /lib64/libdl.so.2 → libdl-2.12.so
d3f4f8999e18ab3473d1e8d8aef2e32d /lib64/libdl.so.2
/lib64/librt.so.1:
lrwxrwxrwx 1 root root 13 Feb 10 11:54 /lib64/librt.so.1 → librt-2.12.so
0d8c84c52b679b15ffd902b3d067b660 /lib64/librt.so.1
/opt/couchbase/bin/…/lib/libcJSON.so.1.0.0:
-rwxr-xr-x 1 couchbase couchbase 19248 Sep 18 2015 /opt/couchbase/bin/…/lib/libcJSON.so.1.0.0
764bc0d6df33660ca04f34ac11fb5358 /opt/couchbase/bin/…/lib/libcJSON.so.1.0.0
/opt/couchbase/bin/…/lib/libhashkit.so.1.0.0:
-rwxr-xr-x 1 couchbase couchbase 16120 Sep 18 2015 /opt/couchbase/bin/…/lib/libhashkit.so.1.0.0
927fdeb13b895661a5634e485b7daec8 /opt/couchbase/bin/…/lib/libhashkit.so.1.0.0
/lib64/libm.so.6:
lrwxrwxrwx 1 root root 12 Feb 10 11:54 /lib64/libm.so.6 → libm-2.12.so
d1623a913ba62a62c89a79fa5fd352db /lib64/libm.so.6
/lib64/libc.so.6:
lrwxrwxrwx 1 root root 12 Feb 10 11:54 /lib64/libc.so.6 → libc-2.12.so
dc5ce313310cfeb8e6abf8a4737fb5b3 /lib64/libc.so.6
/usr/lib64/libstdc++.so.6:
lrwxrwxrwx 1 root root 19 Feb 10 11:54 /usr/lib64/libstdc++.so.6 → libstdc++.so.6.0.13
a4cff5ad897cf82e976103a1f424a903 /usr/lib64/libstdc++.so.6
/lib64/libgcc_s.so.1:
lrwxrwxrwx 1 root root 28 Feb 10 11:54 /lib64/libgcc_s.so.1 → libgcc_s-4.4.7-20120601.so.1
e782c2ecc54b2836a202d711dce6c9bb /lib64/libgcc_s.so.1
/lib64/libgssapi_krb5.so.2:
lrwxrwxrwx 1 root root 21 Feb 10 11:54 /lib64/libgssapi_krb5.so.2 → libgssapi_krb5.so.2.2
d8cc02c82b07a3d0d92f502d23b28584 /lib64/libgssapi_krb5.so.2
/lib64/libkrb5.so.3:
lrwxrwxrwx 1 root root 14 Feb 10 11:54 /lib64/libkrb5.so.3 → libkrb5.so.3.3
002441d2643cc8a455d38bd6fb50ca6a /lib64/libkrb5.so.3
/lib64/libcom_err.so.2:
lrwxrwxrwx 1 root root 17 Feb 10 11:54 /lib64/libcom_err.so.2 → libcom_err.so.2.1
95b5dabf5e3f0e927435a9bfd8f59e85 /lib64/libcom_err.so.2
/lib64/libk5crypto.so.3:
lrwxrwxrwx 1 root root 18 Feb 10 11:54 /lib64/libk5crypto.so.3 → libk5crypto.so.3.1
e086075b3ee5c9926fed4b6cfebe5750 /lib64/libk5crypto.so.3
/lib64/ld-linux-x86-64.so.2:
lrwxrwxrwx 1 root root 10 Feb 10 11:54 /lib64/ld-linux-x86-64.so.2 → ld-2.12.so
ee6986e1eef26e966c6b188d2ee024ff /lib64/ld-linux-x86-64.so.2
/lib64/libkrb5support.so.0:
lrwxrwxrwx 1 root root 21 Feb 10 11:54 /lib64/libkrb5support.so.0 → libkrb5support.so.0.1
602da122691bf60cf393300086f92e91 /lib64/libkrb5support.so.0
/lib64/libkeyutils.so.1:
lrwxrwxrwx 1 root root 18 Feb 10 11:54 /lib64/libkeyutils.so.1 → libkeyutils.so.1.3
e88a46c919b77562d26f8517f1daf1d6 /lib64/libkeyutils.so.1
/lib64/libresolv.so.2:
lrwxrwxrwx 1 root root 17 Feb 10 11:54 /lib64/libresolv.so.2 → libresolv-2.12.so
395d39575d390786417990a9e3c1d607 /lib64/libresolv.so.2
/lib64/libselinux.so.1:
-rwxr-xr-x 1 root root 122040 Oct 15 2014 /lib64/libselinux.so.1
382d521a9e3a27d6c96d30d354f7ee0e /lib64/libselinux.so.1

2

Yes, that’s a bug. Luckily, moxi will automatically be restarted.

Unfortunately, your symbols didn’t load there from the gdb session. If you can give gdb the path to the .so files or just run it from a directory where they’re accessible (I think /opt/couchbase will do it), we can get more Info. Can you do that and post it here?

p.s.: it also helps if you format the post a bit better.

3

We are planning on deprecating server-side moxi in 4.5. However, appreciated if you can still get more info for us as suggested by @ingenthr.

Can you explain what Couchbase client are you using? Is there anything you did specifically to trigger Moxi failure? Also, are you using the default bucket ?

4

Thank you for answer!
Tried to start gdb from /opt/couchbase, but all I can get is:

    GNU gdb (GDB) Red Hat Enterprise Linux (7.2-83.el6)
    Copyright (C) 2010 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
    and "show warranty" for details.
    This GDB was configured as "x86_64-redhat-linux-gnu".
    For bug reporting instructions, please see:
    <http://www.gnu.org/software/gdb/bugs/>...
    Reading symbols from /opt/couchbase/bin/moxi...(no debugging symbols found)...done.
    [New Thread 14648]
    [New Thread 14649]
    [New Thread 14647]
    [New Thread 14617]
    [New Thread 14651]
    [New Thread 14653]
    [New Thread 14652]
    [New Thread 14646]
    Reading symbols from /opt/couchbase/bin/../lib/libconflate.so.1.0.0...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libconflate.so.1.0.0
    Reading symbols from /opt/couchbase/bin/../lib/libvbucket.so.1.1.1...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libvbucket.so.1.1.1
    Reading symbols from /opt/couchbase/bin/../lib/libplatform.so.0.1.0...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libplatform.so.0.1.0
    Reading symbols from /opt/couchbase/bin/../lib/libmcd.so.6.1.0...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libmcd.so.6.1.0
    Reading symbols from /opt/couchbase/bin/../lib/libevent_core-2.0.so.5...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libevent_core-2.0.so.5
    Reading symbols from /opt/couchbase/bin/../lib/libcurl.so.4...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libcurl.so.4
    Reading symbols from /lib64/libz.so.1...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libz.so.1
    Reading symbols from /usr/lib64/libssl.so.10...(no debugging symbols found)...done.
    Loaded symbols for /usr/lib64/libssl.so.10
    Reading symbols from /usr/lib64/libcrypto.so.10...(no debugging symbols found)...done.
    Loaded symbols for /usr/lib64/libcrypto.so.10
    Reading symbols from /lib64/libpthread.so.0...(no debugging symbols found)...done.
    [Thread debugging using libthread_db enabled]
    Loaded symbols for /lib64/libpthread.so.0
    Reading symbols from /lib64/libdl.so.2...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libdl.so.2
    Reading symbols from /lib64/librt.so.1...(no debugging symbols found)...done.
    Loaded symbols for /lib64/librt.so.1
    Reading symbols from /opt/couchbase/bin/../lib/libcJSON.so.1.0.0...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libcJSON.so.1.0.0
    Reading symbols from /opt/couchbase/bin/../lib/libhashkit.so.1.0.0...(no debugging symbols found)...done.
    Loaded symbols for /opt/couchbase/bin/../lib/libhashkit.so.1.0.0
    Reading symbols from /lib64/libm.so.6...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libm.so.6
    Reading symbols from /lib64/libc.so.6...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libc.so.6
    Reading symbols from /usr/lib64/libstdc++.so.6...(no debugging symbols found)...done.
    Loaded symbols for /usr/lib64/libstdc++.so.6
    Reading symbols from /lib64/libgcc_s.so.1...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libgcc_s.so.1
    Reading symbols from /lib64/libgssapi_krb5.so.2...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libgssapi_krb5.so.2
    Reading symbols from /lib64/libkrb5.so.3...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libkrb5.so.3
    Reading symbols from /lib64/libcom_err.so.2...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libcom_err.so.2
    Reading symbols from /lib64/libk5crypto.so.3...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libk5crypto.so.3
    Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
    Loaded symbols for /lib64/ld-linux-x86-64.so.2
    Reading symbols from /lib64/libkrb5support.so.0...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libkrb5support.so.0
    Reading symbols from /lib64/libkeyutils.so.1...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libkeyutils.so.1
    Reading symbols from /lib64/libresolv.so.2...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libresolv.so.2
    Reading symbols from /lib64/libselinux.so.1...(no debugging symbols found)...done.
    Loaded symbols for /lib64/libselinux.so.1

    warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffe2da56000
    Core was generated by `/opt/couchbase/bin/moxi -B auto -z url=http://127.0.0.1:8091/pools/default/buck'.
    Program terminated with signal 6, Aborted.
    #0  0x00007f300b0cf625 in raise () from /lib64/libc.so.6
    Missing separate debuginfos, use: debuginfo-install couchbase-server-community-4.0.0-4051.x86_64
    (gdb) bt
    #0  0x00007f300b0cf625 in raise () from /lib64/libc.so.6
    #1  0x00007f300b0d0e05 in abort () from /lib64/libc.so.6
    #2  0x00007f300cfee806 in cb_assert_die () from /opt/couchbase/bin/../lib/libplatform.so.0.1.0
    #3  0x000000000041dac9 in _start ()
    (gdb)

May be you have any idea about it?

5

I use php-memcache as a client