blob: 6c1bce7c9a02cfbac47bf1fa1c805e266dd35e8c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
call mtr.add_suppression("santa.claus.ipv4.example.com");
flush status;
flush hosts;
flush user_resources;
flush privileges;
select @@global.debug;
@@global.debug
select @@global.max_connect_errors;
@@global.max_connect_errors
100
select @@global.max_user_connections;
@@global.max_user_connections
0
select @@global.max_connections;
@@global.max_connections
151
select `User`, `Host` from mysql.`user` where `host` like '%\\%%';
User Host
select `User`, `Host` from mysql.`user` where `user` like '192.%';
User Host
select `User`, `Host` from mysql.`user` where `user` like '2001:%';
User Host
select `User`, `Host` from mysql.`user` where `user` like 'santa.claus.%';
User Host
create user 'root'@'192.0.2.4';
grant select on test.* to 'root'@'192.0.2.4';
select "Con1 is alive";
Con1 is alive
Con1 is alive
select current_user();
current_user()
root@localhost
set global debug_dbug= "+d,vio_peer_addr_fake_ipv4,getnameinfo_fake_ipv4,getaddrinfo_fake_bad_ipv4";
select "Con2 is alive";
Con2 is alive
Con2 is alive
select current_user();
current_user()
root@192.0.2.4
"Dumping performance_schema.host_cache"
IP 192.0.2.4
HOST NULL
HOST_VALIDATED YES
SUM_CONNECT_ERRORS 0
COUNT_HOST_BLOCKED_ERRORS 0
COUNT_NAMEINFO_TRANSIENT_ERRORS 0
COUNT_NAMEINFO_PERMANENT_ERRORS 0
COUNT_FORMAT_ERRORS 0
COUNT_ADDRINFO_TRANSIENT_ERRORS 0
COUNT_ADDRINFO_PERMANENT_ERRORS 0
COUNT_FCRDNS_ERRORS 1
COUNT_HOST_ACL_ERRORS 0
COUNT_NO_AUTH_PLUGIN_ERRORS 0
COUNT_AUTH_PLUGIN_ERRORS 0
COUNT_HANDSHAKE_ERRORS 0
COUNT_PROXY_USER_ERRORS 0
COUNT_PROXY_USER_ACL_ERRORS 0
COUNT_AUTHENTICATION_ERRORS 0
COUNT_SSL_ERRORS 0
COUNT_MAX_USER_CONNECTIONS_ERRORS 0
COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0
COUNT_DEFAULT_DATABASE_ERRORS 0
COUNT_INIT_CONNECT_ERRORS 0
COUNT_LOCAL_ERRORS 0
COUNT_UNKNOWN_ERRORS 0
FIRST_ERROR_SEEN set
LAST_ERROR_SEEN set
select "Con3 is alive";
Con3 is alive
Con3 is alive
select current_user();
current_user()
root@192.0.2.4
"Dumping performance_schema.host_cache"
IP 192.0.2.4
HOST NULL
HOST_VALIDATED YES
SUM_CONNECT_ERRORS 0
COUNT_HOST_BLOCKED_ERRORS 0
COUNT_NAMEINFO_TRANSIENT_ERRORS 0
COUNT_NAMEINFO_PERMANENT_ERRORS 0
COUNT_FORMAT_ERRORS 0
COUNT_ADDRINFO_TRANSIENT_ERRORS 0
COUNT_ADDRINFO_PERMANENT_ERRORS 0
COUNT_FCRDNS_ERRORS 1
COUNT_HOST_ACL_ERRORS 0
COUNT_NO_AUTH_PLUGIN_ERRORS 0
COUNT_AUTH_PLUGIN_ERRORS 0
COUNT_HANDSHAKE_ERRORS 0
COUNT_PROXY_USER_ERRORS 0
COUNT_PROXY_USER_ACL_ERRORS 0
COUNT_AUTHENTICATION_ERRORS 0
COUNT_SSL_ERRORS 0
COUNT_MAX_USER_CONNECTIONS_ERRORS 0
COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS 0
COUNT_DEFAULT_DATABASE_ERRORS 0
COUNT_INIT_CONNECT_ERRORS 0
COUNT_LOCAL_ERRORS 0
COUNT_UNKNOWN_ERRORS 0
FIRST_ERROR_SEEN set
LAST_ERROR_SEEN set
revoke select on test.* from 'root'@'192.0.2.4';
drop user 'root'@'192.0.2.4';
set global debug_dbug= default;
|
