【已解决】Can't connect to local MySQL server through socket '3306'

shang2010

[root@host]# mysql -u root -p -h 127.0.0.1
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 691
Server version: 5.0.77 Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.


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这个日志不是正常的么

shang2010

我看你修改了主机名成host了，，
我头也被大了

bill01

我看你修改了主机名成host了，，
我头也被大了
shang2010 发表于 2010-07-15 11:19

    不是 那个 主机名 不是这个 是我复制到cu的时候改的  

xiao7ng

看下hosts文件吧

bill01

回复 11# shang2010


    我想知道的是 为啥 直接 mysql -u root -p
或者mysql -u root -p -h localhost
不行呢

ubuntuer

mysql对于localhost 和 127.0.0.1的处理方式是不一样的！
使用localhost的话 会采用unix socket去连接 而不是我们所期望的tcp/ip

unix socket是同一台机器上不同进程间的通信机制
而ip socket是网络上不同主机之间进程的通讯机制

bill01

回复 14# xiao7ng

1. less /etc/hosts
   
2. # Do not remove the following line, or various programs
   
3. # that require network functionality will fail.
   
4. 127.0.0.1              host180 localhost.localdomain localhost
   
5. ::1             localhost6.localdomain6 localhost6
   

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bill01

mysql对于localhost 和 127.0.0.1的处理方式是不一样的！
使用localhost的话 会采用unix socket去连接 而不 ...
ubuntuer 发表于 2010-07-15 11:33

    那请问这位该咋样才能两种方式都可以连接呢
另外不解的是
在PHP程序中用localhost是正常的

ruochen

配置文件中有socket指定路径么？

bill01

1. # Example MySQL config file for large systems.
   
2. #
   
3. # This is for a large system with memory = 512M where the system runs mainly
   
4. # MySQL.
   
5. #
   
6. # You can copy this file to
   
7. # /etc/my.cnf to set global options,
   
8. # mysql-data-dir/my.cnf to set server-specific options (in this
   
9. # installation this directory is /var/lib/mysql) or
   
10. # ~/.my.cnf to set user-specific options.
    
11. #
    
12. # In this file, you can use all long options that a program supports.
    
13. # If you want to know which options a program supports, run the program
    
14. # with the "--help" option.
    
15. 
    
16. # The following options will be passed to all MySQL clients
    
17. [client]
    
18. #password       = your_password
    
19. port            = 3306
    
20. socket          = /var/lib/mysql/mysql.sock
    
21. 
    
22. # Here follows entries for some specific programs
    
23. 
    
24. # The MySQL server
    
25. [mysqld]
    
26. port            = 3306
    
27. socket          = /var/lib/mysql/mysql.sock
    
28. skip-locking
    
29. key_buffer = 256M
    
30. max_allowed_packet = 1M
    
31. table_cache = 256
    
32. sort_buffer_size = 1M
    
33. read_buffer_size = 1M
    
34. read_rnd_buffer_size = 4M
    
35. myisam_sort_buffer_size = 64M
    
36. thread_cache_size = 8
    
37. query_cache_size= 16M
    
38. # Try number of CPU's*2 for thread_concurrency
    
39. thread_concurrency = 8
    
40. 
    
41. # Don't listen on a TCP/IP port at all. This can be a security enhancement,
    
42. # if all processes that need to connect to mysqld run on the same host.
    
43. # All interaction with mysqld must be made via Unix sockets or named pipes.
    
44. # Note that using this option without enabling named pipes on Windows
    
45. # (via the "enable-named-pipe" option) will render mysqld useless!
    
46. #
    
47. #skip-networking
    
48. 
    
49. # Disable Federated by default
    
50. skip-federated
    
51. 
    
52. # Replication Master Server (default)
    
53. # binary logging is required for replication
    
54. log-bin=mysql-bin
    
55. 
    
56. # required unique id between 1 and 2^32 - 1
    
57. # defaults to 1 if master-host is not set
    
58. # but will not function as a master if omitted
    
59. server-id       = 1
    
60. 
    
61. # Replication Slave (comment out master section to use this)
    
62. #
    
63. # To configure this host as a replication slave, you can choose between
    
64. # two methods :
    
65. #
    
66. # 1) Use the CHANGE MASTER TO command (fully described in our manual) -
    
67. #    the syntax is:
    
68. #
    
69. #    CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
    
70. #    MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
    
71. #
    
72. #    where you replace <host>, <user>, <password> by quoted strings and
    
73. #    <port> by the master's port number (3306 by default).
    
74. #
    
75. #    Example:
    
76. #
    
77. #    CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306,
    
78. #    MASTER_USER='joe', MASTER_PASSWORD='secret';
    
79. #
    
80. # OR
    
81. #
    
82. # 2) Set the variables below. However, in case you choose this method, then
    
83. #    start replication for the first time (even unsuccessfully, for example
    
84. #    if you mistyped the password in master-password and the slave fails to
    
85. #    connect), the slave will create a master.info file, and any later
    
86. #    change in this file to the variables' values below will be ignored and
    
87. #    overridden by the content of the master.info file, unless you shutdown
    
88. #    the slave server, delete master.info and restart the slaver server.
    
89. #    For that reason, you may want to leave the lines below untouched
    
90. #    (commented) and instead use CHANGE MASTER TO (see above)
    
91. #
    
92. # required unique id between 2 and 2^32 - 1
    
93. # (and different from the master)
    
94. # defaults to 2 if master-host is set
    
95. # but will not function as a slave if omitted
    
96. #server-id       = 2
    
97. #
    
98. # The replication master for this slave - required
    
99. #master-host     =   <hostname>
    
100. #
     
101. # The username the slave will use for authentication when connecting
     
102. # to the master - required
     
103. #master-user     =   <username>
     
104. #
     
105. # The password the slave will authenticate with when connecting to
     
106. # the master - required
     
107. #master-password =   <password>
     
108. #
     
109. # The port the master is listening on.
     
110. # optional - defaults to 3306
     
111. #master-port     =  <port>
     
112. #
     
113. # binary logging - not required for slaves, but recommended
     
114. #log-bin=mysql-bin
     
115. 
     
116. # Point the following paths to different dedicated disks
     
117. #tmpdir         = /tmp/         
     
118. #log-update     = /path-to-dedicated-directory/hostname
     
119. 
     
120. # Uncomment the following if you are using BDB tables
     
121. #bdb_cache_size = 64M
     
122. #bdb_max_lock = 100000
     
123. 
     
124. # Uncomment the following if you are using InnoDB tables
     
125. #innodb_data_home_dir = /var/lib/mysql/
     
126. #innodb_data_file_path = ibdata1:10M:autoextend
     
127. #innodb_log_group_home_dir = /var/lib/mysql/
     
128. #innodb_log_arch_dir = /var/lib/mysql/
     
129. # You can set .._buffer_pool_size up to 50 - 80 %
     
130. # of RAM but beware of setting memory usage too high
     
131. #innodb_buffer_pool_size = 256M
     
132. #innodb_additional_mem_pool_size = 20M
     
133. # Set .._log_file_size to 25 % of buffer pool size
     
134. #innodb_log_file_size = 64M
     
135. #innodb_log_buffer_size = 8M
     
136. #innodb_flush_log_at_trx_commit = 1
     
137. #innodb_lock_wait_timeout = 50
     
138. 
     
139. [mysqldump]
     
140. quick
     
141. max_allowed_packet = 16M
     
142. 
     
143. [mysql]
     
144. no-auto-rehash
     
145. # Remove the next comment character if you are not familiar with SQL
     
146. #safe-updates
     
147. 
     
148. [isamchk]
     
149. key_buffer = 128M
     
150. sort_buffer_size = 128M
     
151. read_buffer = 2M
     
152. write_buffer = 2M
     
153. 
     
154. [myisamchk]
     
155. key_buffer = 128M
     
156. sort_buffer_size = 128M
     
157. read_buffer = 2M
     
158. write_buffer = 2M
     
159. 
     
160. [mysqlhotcopy]
     
161. interactive-timeout

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这是配置文件