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Note on how to observe which Galera node handles a given query
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‎audit_log_example.md

Lines changed: 7 additions & 124 deletions
Original file line numberDiff line numberDiff line change
@@ -37,129 +37,12 @@ mysql/3ea109ae-48ba-4d7d-b74f-d34c33ff5043:~# less /var/vcap/data/sys/log/mysql/
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"Connect","10_2019-06-19T06:01:13","2019-06-19T06:01:21 UTC","6",0,"admin","admin","","","localhost","",""
3838
"Query","11_2019-06-19T06:01:13","2019-06-19T06:01:21 UTC","select","6",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
3939
"Query","12_2019-06-19T06:01:13","2019-06-19T06:01:21 UTC","select","6",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
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"Quit","13_2019-06-19T06:01:13","2019-06-19T06:01:21 UTC","6",0,"admin","admin","","","localhost","",""
41-
"Connect","14_2019-06-19T06:01:13","2019-06-19T06:01:26 UTC","7",0,"admin","admin","","","localhost","",""
42-
"Query","15_2019-06-19T06:01:13","2019-06-19T06:01:26 UTC","select","7",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
43-
"Query","16_2019-06-19T06:01:13","2019-06-19T06:01:26 UTC","select","7",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
44-
"Quit","17_2019-06-19T06:01:13","2019-06-19T06:01:26 UTC","7",0,"admin","admin","","","localhost","",""
45-
"Query","18_2019-06-19T06:01:13","2019-06-19T06:01:30 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
46-
"Query","19_2019-06-19T06:01:13","2019-06-19T06:01:30 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
47-
"Query","20_2019-06-19T06:01:13","2019-06-19T06:01:30 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
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"Connect","21_2019-06-19T06:01:13","2019-06-19T06:01:31 UTC","8",0,"admin","admin","","","localhost","",""
49-
"Query","22_2019-06-19T06:01:13","2019-06-19T06:01:31 UTC","select","8",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
50-
...skipping...
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"Query","211999_2019-06-19T06:14:39","2019-06-19T07:08:02 UTC","select","726",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
52-
"Query","212000_2019-06-19T06:14:39","2019-06-19T07:08:02 UTC","select","726",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
53-
"Quit","212001_2019-06-19T06:14:39","2019-06-19T07:08:02 UTC","726",0,"admin","admin","","","localhost","",""
54-
"Connect","212002_2019-06-19T06:14:39","2019-06-19T07:08:07 UTC","727",0,"admin","admin","","","localhost","",""
55-
"Query","212003_2019-06-19T06:14:39","2019-06-19T07:08:07 UTC","select","727",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
56-
"Query","212004_2019-06-19T06:14:39","2019-06-19T07:08:07 UTC","select","727",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
57-
"Quit","212005_2019-06-19T06:14:39","2019-06-19T07:08:07 UTC","727",0,"admin","admin","","","localhost","",""
58-
"Connect","212006_2019-06-19T06:14:39","2019-06-19T07:08:12 UTC","728",0,"admin","admin","","","localhost","",""
59-
"Query","212007_2019-06-19T06:14:39","2019-06-19T07:08:12 UTC","select","728",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
60-
"Query","212008_2019-06-19T06:14:39","2019-06-19T07:08:12 UTC","select","728",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
61-
"Quit","212009_2019-06-19T06:14:39","2019-06-19T07:08:12 UTC","728",0,"admin","admin","","","localhost","",""
62-
"Query","212010_2019-06-19T06:14:39","2019-06-19T07:08:13 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
63-
"Query","212011_2019-06-19T06:14:39","2019-06-19T07:08:13 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
64-
"Query","212012_2019-06-19T06:14:39","2019-06-19T07:08:13 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
65-
"Connect","212013_2019-06-19T06:14:39","2019-06-19T07:08:17 UTC","729",0,"admin","admin","","","localhost","",""
66-
"Query","212014_2019-06-19T06:14:39","2019-06-19T07:08:17 UTC","select","729",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
67-
"Query","212015_2019-06-19T06:14:39","2019-06-19T07:08:17 UTC","select","729",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
68-
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69-
"Connect","212017_2019-06-19T06:14:39","2019-06-19T07:08:22 UTC","730",0,"admin","admin","","","localhost","",""
70-
"Query","212018_2019-06-19T06:14:39","2019-06-19T07:08:22 UTC","select","730",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
71-
"Query","212019_2019-06-19T06:14:39","2019-06-19T07:08:22 UTC","select","730",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
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"Quit","212020_2019-06-19T06:14:39","2019-06-19T07:08:22 UTC","730",0,"admin","admin","","","localhost","",""
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"Connect","212021_2019-06-19T06:14:39","2019-06-19T07:08:27 UTC","731",0,"admin","admin","","","localhost","",""
74-
"Query","212022_2019-06-19T06:14:39","2019-06-19T07:08:27 UTC","select","731",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
75-
"Query","212023_2019-06-19T06:14:39","2019-06-19T07:08:27 UTC","select","731",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
76-
"Quit","212024_2019-06-19T06:14:39","2019-06-19T07:08:27 UTC","731",0,"admin","admin","","","localhost","",""
77-
"Query","212025_2019-06-19T06:14:39","2019-06-19T07:08:28 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
78-
"Query","212026_2019-06-19T06:14:39","2019-06-19T07:08:28 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
79-
"Query","212027_2019-06-19T06:14:39","2019-06-19T07:08:28 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
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"Connect","212028_2019-06-19T06:14:39","2019-06-19T07:08:32 UTC","732",0,"admin","admin","","","localhost","",""
81-
"Query","212029_2019-06-19T06:14:39","2019-06-19T07:08:32 UTC","select","732",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
82-
"Query","212030_2019-06-19T06:14:39","2019-06-19T07:08:32 UTC","select","732",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
83-
"Quit","212031_2019-06-19T06:14:39","2019-06-19T07:08:32 UTC","732",0,"admin","admin","","","localhost","",""
84-
"Connect","212032_2019-06-19T06:14:39","2019-06-19T07:08:37 UTC","733",0,"admin","admin","","","localhost","",""
85-
"Query","212033_2019-06-19T06:14:39","2019-06-19T07:08:37 UTC","select","733",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
86-
"Query","212034_2019-06-19T06:14:39","2019-06-19T07:08:37 UTC","select","733",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
87-
"Quit","212035_2019-06-19T06:14:39","2019-06-19T07:08:37 UTC","733",0,"admin","admin","","","localhost","",""
88-
"Connect","212036_2019-06-19T06:14:39","2019-06-19T07:08:42 UTC","734",0,"admin","admin","","","localhost","",""
89-
"Query","212037_2019-06-19T06:14:39","2019-06-19T07:08:42 UTC","select","734",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
90-
"Query","212038_2019-06-19T06:14:39","2019-06-19T07:08:42 UTC","select","734",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
91-
"Quit","212039_2019-06-19T06:14:39","2019-06-19T07:08:42 UTC","734",0,"admin","admin","","","localhost","",""
92-
"Query","212040_2019-06-19T06:14:39","2019-06-19T07:08:43 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
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"Query","212041_2019-06-19T06:14:39","2019-06-19T07:08:43 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
94-
"Query","212042_2019-06-19T06:14:39","2019-06-19T07:08:43 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
95-
"Connect","212043_2019-06-19T06:14:39","2019-06-19T07:08:47 UTC","735",0,"admin","admin","","","localhost","",""
96-
"Query","212044_2019-06-19T06:14:39","2019-06-19T07:08:47 UTC","select","735",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
97-
"Query","212045_2019-06-19T06:14:39","2019-06-19T07:08:47 UTC","select","735",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
98-
"Quit","212046_2019-06-19T06:14:39","2019-06-19T07:08:47 UTC","735",0,"admin","admin","","","localhost","",""
99-
"Connect","212047_2019-06-19T06:14:39","2019-06-19T07:08:52 UTC","736",0,"admin","admin","","","localhost","",""
100-
"Query","212048_2019-06-19T06:14:39","2019-06-19T07:08:52 UTC","select","736",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
101-
"Query","212049_2019-06-19T06:14:39","2019-06-19T07:08:52 UTC","select","736",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
102-
"Quit","212050_2019-06-19T06:14:39","2019-06-19T07:08:52 UTC","736",0,"admin","admin","","","localhost","",""
103-
"Connect","212051_2019-06-19T06:14:39","2019-06-19T07:08:57 UTC","737",0,"admin","admin","","","localhost","",""
104-
"Query","212052_2019-06-19T06:14:39","2019-06-19T07:08:57 UTC","select","737",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
105-
"Query","212053_2019-06-19T06:14:39","2019-06-19T07:08:57 UTC","select","737",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
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"Quit","212054_2019-06-19T06:14:39","2019-06-19T07:08:57 UTC","737",0,"admin","admin","","","localhost","",""
107-
"Query","212055_2019-06-19T06:14:39","2019-06-19T07:08:58 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
108-
"Query","212056_2019-06-19T06:14:39","2019-06-19T07:08:58 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
109-
"Query","212057_2019-06-19T06:14:39","2019-06-19T07:08:58 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
110-
"Connect","212058_2019-06-19T06:14:39","2019-06-19T07:09:02 UTC","738",0,"admin","admin","","","localhost","",""
111-
"Query","212059_2019-06-19T06:14:39","2019-06-19T07:09:02 UTC","select","738",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
112-
"Query","212060_2019-06-19T06:14:39","2019-06-19T07:09:02 UTC","select","738",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
113-
"Quit","212061_2019-06-19T06:14:39","2019-06-19T07:09:02 UTC","738",0,"admin","admin","","","localhost","",""
114-
"Connect","212062_2019-06-19T06:14:39","2019-06-19T07:09:07 UTC","739",0,"admin","admin","","","localhost","",""
115-
"Query","212063_2019-06-19T06:14:39","2019-06-19T07:09:07 UTC","select","739",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
116-
"Query","212064_2019-06-19T06:14:39","2019-06-19T07:09:07 UTC","select","739",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
117-
"Quit","212065_2019-06-19T06:14:39","2019-06-19T07:09:07 UTC","739",0,"admin","admin","","","localhost","",""
118-
"Connect","212066_2019-06-19T06:14:39","2019-06-19T07:09:12 UTC","740",0,"admin","admin","","","localhost","",""
119-
"Query","212067_2019-06-19T06:14:39","2019-06-19T07:09:12 UTC","select","740",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
120-
"Query","212068_2019-06-19T06:14:39","2019-06-19T07:09:12 UTC","select","740",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
121-
"Quit","212069_2019-06-19T06:14:39","2019-06-19T07:09:12 UTC","740",0,"admin","admin","","","localhost","",""
122-
"Query","212070_2019-06-19T06:14:39","2019-06-19T07:09:13 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
123-
"Query","212071_2019-06-19T06:14:39","2019-06-19T07:09:13 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
124-
"Query","212072_2019-06-19T06:14:39","2019-06-19T07:09:13 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
125-
"Connect","212073_2019-06-19T06:14:39","2019-06-19T07:09:17 UTC","741",0,"admin","admin","","","localhost","",""
126-
"Query","212074_2019-06-19T06:14:39","2019-06-19T07:09:17 UTC","select","741",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
127-
"Query","212075_2019-06-19T06:14:39","2019-06-19T07:09:17 UTC","select","741",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
128-
"Quit","212076_2019-06-19T06:14:39","2019-06-19T07:09:17 UTC","741",0,"admin","admin","","","localhost","",""
129-
"Connect","212077_2019-06-19T06:14:39","2019-06-19T07:09:22 UTC","742",0,"admin","admin","","","localhost","",""
130-
"Query","212078_2019-06-19T06:14:39","2019-06-19T07:09:22 UTC","select","742",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
131-
"Query","212079_2019-06-19T06:14:39","2019-06-19T07:09:22 UTC","select","742",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
132-
"Quit","212080_2019-06-19T06:14:39","2019-06-19T07:09:22 UTC","742",0,"admin","admin","","","localhost","",""
133-
"Connect","212081_2019-06-19T06:14:39","2019-06-19T07:09:27 UTC","743",0,"admin","admin","","","localhost","",""
134-
"Query","212082_2019-06-19T06:14:39","2019-06-19T07:09:27 UTC","select","743",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
135-
"Query","212083_2019-06-19T06:14:39","2019-06-19T07:09:27 UTC","select","743",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
136-
"Quit","212084_2019-06-19T06:14:39","2019-06-19T07:09:27 UTC","743",0,"admin","admin","","","localhost","",""
137-
"Query","212085_2019-06-19T06:14:39","2019-06-19T07:09:28 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
138-
"Query","212086_2019-06-19T06:14:39","2019-06-19T07:09:28 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
139-
"Query","212087_2019-06-19T06:14:39","2019-06-19T07:09:28 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
140-
"Connect","212088_2019-06-19T06:14:39","2019-06-19T07:09:32 UTC","744",0,"admin","admin","","","localhost","",""
141-
"Query","212089_2019-06-19T06:14:39","2019-06-19T07:09:32 UTC","select","744",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
142-
"Query","212090_2019-06-19T06:14:39","2019-06-19T07:09:32 UTC","select","744",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
143-
"Quit","212091_2019-06-19T06:14:39","2019-06-19T07:09:32 UTC","744",0,"admin","admin","","","localhost","",""
144-
"Connect","212092_2019-06-19T06:14:39","2019-06-19T07:09:37 UTC","745",0,"admin","admin","","","localhost","",""
145-
"Query","212093_2019-06-19T06:14:39","2019-06-19T07:09:37 UTC","select","745",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
146-
"Query","212094_2019-06-19T06:14:39","2019-06-19T07:09:37 UTC","select","745",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
147-
"Quit","212095_2019-06-19T06:14:39","2019-06-19T07:09:37 UTC","745",0,"admin","admin","","","localhost","",""
148-
"Connect","212096_2019-06-19T06:14:39","2019-06-19T07:09:42 UTC","746",0,"admin","admin","","","localhost","",""
149-
"Query","212097_2019-06-19T06:14:39","2019-06-19T07:09:42 UTC","select","746",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
150-
"Query","212098_2019-06-19T06:14:39","2019-06-19T07:09:42 UTC","select","746",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
151-
"Quit","212099_2019-06-19T06:14:39","2019-06-19T07:09:42 UTC","746",0,"admin","admin","","","localhost","",""
152-
"Query","212100_2019-06-19T06:14:39","2019-06-19T07:09:43 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
153-
"Query","212101_2019-06-19T06:14:39","2019-06-19T07:09:43 UTC","show_status","4",0,"SHOW GLOBAL STATUS","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
154-
"Query","212102_2019-06-19T06:14:39","2019-06-19T07:09:43 UTC","show_variables","4",0,"SHOW GLOBAL VARIABLES","mysql-metrics[mysql-metrics] @ localhost []","localhost","","",""
155-
"Connect","212103_2019-06-19T06:14:39","2019-06-19T07:09:47 UTC","747",0,"admin","admin","","","localhost","",""
156-
"Query","212104_2019-06-19T06:14:39","2019-06-19T07:09:47 UTC","select","747",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
157-
"Query","212105_2019-06-19T06:14:39","2019-06-19T07:09:47 UTC","select","747",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
158-
"Quit","212106_2019-06-19T06:14:39","2019-06-19T07:09:47 UTC","747",0,"admin","admin","","","localhost","",""
159-
"Connect","212107_2019-06-19T06:14:39","2019-06-19T07:09:52 UTC","748",0,"admin","admin","","","localhost","",""
160-
"Query","212108_2019-06-19T06:14:39","2019-06-19T07:09:52 UTC","select","748",0,"select @@version_comment limit 1","admin[admin] @ localhost []","localhost","","",""
161-
"Query","212109_2019-06-19T06:14:39","2019-06-19T07:09:52 UTC","select","748",0,"SELECT @@global.read_only","admin[admin] @ localhost []","localhost","","",""
162-
"Quit","212110_2019-06-19T06:14:39","2019-06-19T07:09:52 UTC","748",0,"admin","admin","","","localhost","",""
163-
"Connect","212111_2019-06-19T06:14:39","2019-06-19T07:09:57 UTC","749",0,"admin","admin","","","localhost","",""
16440
```
16541

42+
* Use this approach to determine which node in an HA cluster handles a query:
43+
- BOSH SSH into each of the three nodes in the Galera cluster
44+
- On each node, `tail -f /var/vcap/data/sys/log/mysql/mysql_audit_log`
45+
- Run a query
46+
- Observe which node's log file shows the query
47+
48+

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