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我在Rails项目中有一个ruby脚本。该脚本包含environment.rb，以便Rails得到加载等。然后，它监听另一个服务器的TCP套接字上的数据，解析它以保持mysql数据库处于最新状态。调试过时的红宝石进程
我使用守护进程gem可以轻松启动和停止进程。 Iv的剧本在生产中运行并没有问题，但现在已经过时了。守护进程控制文件表示进程仍在运行，当我执行ps -ef时进程正在显示，monit也认为该进程正常运行。但是，数据库没有得到更新（如果我在另一个进程中再次运行脚本，数据库正确更新）。
我一直在使用GDB调试用什么过程中的问题是通过运行sudo gdb /usr/local/bin/ruby 25395试过，这个输出是
GNU gdb 6.8-debian
Copyright (C) 2008 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-linux-gnu"...
/usr/local/bin/ruby: No such file or directory.
Attaching to process 25395
Reading symbols from /usr/bin/ruby1.8...(no debugging symbols found)...done.
Reading symbols from /usr/lib/libruby1.8.so.1.8...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libruby1.8.so.1.8
Reading symbols from /lib/libpthread.so.0...
(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
[New Thread 0x2b7decb08d30 (LWP 25395)]
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libcrypt.so.1...
(no debugging symbols found)...done.
Loaded symbols for /lib/libcrypt.so.1
Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/libc.so.6...
(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/thread.so...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/thread.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/etc.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/etc.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/stringio.so...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/stringio.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/syck.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/syck.so
Reading symbols from /lib/libnss_compat.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_compat.so.2
Reading symbols from /lib/libnsl.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libnss_nis.so.2...
(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_nis.so.2
Reading symbols from /lib/libnss_files.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/socket.so...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/socket.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/nkf.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/nkf.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/bigdecimal.so...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/bigdecimal.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/iconv.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/iconv.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/strscan.so...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/strscan.so
Reading symbols from /usr/lib/ruby/gems/1.8/gems/hpricot-0.8.1/lib/fast_xs.so...done.
Loaded symbols for /usr/lib/ruby/gems/1.8/gems/hpricot-0.8.1/lib/fast_xs.so
Reading symbols from /usr/lib/ruby/gems/1.8/gems/json-1.1.9/ext/json/ext/parser.so...done.
Loaded symbols for /usr/lib/ruby/gems/1.8/gems/json-1.1.9/ext/json/ext/parser.so
Reading symbols from /usr/lib/ruby/gems/1.8/gems/json-1.1.9/ext/json/ext/generator.so...done.
Loaded symbols for /usr/lib/ruby/gems/1.8/gems/json-1.1.9/ext/json/ext/generator.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/racc/cparse.so...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/racc/cparse.so
Reading symbols from /usr/lib/ruby/gems/1.8/gems/tmail-1.2.3.1/ext/tmailscanner/tmail/tmailscanner.so...done.
Loaded symbols for /usr/lib/ruby/gems/1.8/gems/tmail-1.2.3.1/ext/tmailscanner/tmail/tmailscanner.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/openssl.so...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/openssl.so
Reading symbols from /lib/libssl.so.0.9.8...done.
Loaded symbols for /lib/libssl.so.0.9.8
Reading symbols from /lib/libcrypto.so.0.9.8...done.
Loaded symbols for /lib/libcrypto.so.0.9.8
Reading symbols from /lib/libz.so.1...done.
Loaded symbols for /lib/libz.so.1
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/digest.so...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/digest.so
Reading symbols from /usr/lib/ruby/1.8/x86_64-linux/fcntl.so...done.
Loaded symbols for /usr/lib/ruby/1.8/x86_64-linux/fcntl.so
Reading symbols from /usr/lib/ruby/gems/1.8/gems/mysql-2.7/lib/mysql.so...done.
Loaded symbols for /usr/lib/ruby/gems/1.8/gems/mysql-2.7/lib/mysql.so
Reading symbols from /usr/lib/libmysqlclient.so.15...done.
Loaded symbols for /usr/lib/libmysqlclient.so.15
0x00002b7dec86df10 in read()
from /lib/libc.so.6
这表明，这个问题是与MySQL连接。可能有几个小时没有任何数据。我相信这可能会导致进程与Mysql断开连接？但是如果这确实发生了，我会尽管当脚本确实开始再次获取数据时，会抛出一个异常，这会阻止脚本运行，提示monit重新启动它。