I am new to splunk and need to query for a particular field. The events look something like this:
[2022-08-27 10:49:54.909.196][0x0000219c][Info][GENERAL] Player{
PlayerName: popeye
Experience: 32
}
[2022-08-27 10:49:54.909.196][0x0000219c][Info][GENERAL] Player{
PlayerName: jack
Experience: 12
}
[2022-08-27 10:49:54.909.196][0x0000219c][Info][GENERAL] Player{
PlayerName: popeye
Experience: 32
}
[2022-08-27 10:49:54.909.196][0x0000219c][Info][GENERAL] Player{
playerName: popeye
experience: 32
}
I want to create an alert if any unique PlayerName count is greater than 2. For example, in this case there would be an alert for "popeye".
I was able to extract the field and the count using |stats count by playerName,
You say you tried |stats count by playerName but not what results you got from that. I suspect you got nothing because there is no 'playerName' field. Field names are case-sensitive. Try
| stats count by PlayerName
| where count > 2
Of course, that presumes the PlayerName field is extracted already.
Related
I have below log from my application:
BookData, {
id: 12312
}, appID : 'APP1', Relation_ID : asdas-12312
host = aws#asd. sourcetype=service_name
The entire log above is in the form of a single String. I want to create a table with the no. of times an appID has hit the service. i.e. I want to count the no. of events and group them by appID.
Basically, something like:
appID Count
APP1 23
APP2 25
APP3 100
I tried with below query, but it is not working. It is giving as 0 records found.
index=my_index sourcetype=service_name * | table appID Count | addColTotals labelfield=appID label="appID" count
As per my understanding, above query is not working because appID is not a label, but in that case, how do I go about forming the query with my desired result.
The query doesn't work in part because there is no Count field for the table command to display and no count field for the addcoltotals command to add to the results. To get a count you must tell Splunk to count fields by using the stats, eventstats, streamstats, or timechart command.
Try this:
index=my_index sourcetype=service_name
| stats count as Count by appID
i will use an example to illustrate my question.
you have a group-chat table that stores data about group chat.
-------------------+
id | name |owner_id|
-------------------+
33 | code | 45
you have a messages table that hold messages
-------------------------------------+
id | content | user_id | chat_room_id
-------------------------------------+
5 | "hello" | 41 | 33
2 | "hi" | 43 | 33
you have a users table that holds user information and which group chat they are part of:
-------------------------------------+
id | name | chat_room_id
-------------------------------------+
5 |"nick"| 33
2 |"mike"| 33
is this the right way to set up the database?
without joints or foreign keys. what's the most efficient way to load all the messages and user data and have it in a form that allows you to construct a ui where the user data is displayed next to the message?
My solutions:
if you query the messages database and retrieved all the messages where chat room id is equal to 33, you're gonna get an array that looks like
[
{
id : 5,
user_id : 41,
content : "hello"
},
{
id : 2,
user_id : 43,
content : "hi"
}
]
as you can see the user ids are part of the message object.
solution 1 : (naive) :
loop through the messages array and query the database using the user id.
this is a bad solution since querying the database from a loop is never a good idea.
solution 2 : (efficient but less data to send in the response) :
loop through the messages array and construct an array of user ids and use that in a query
using WHERE user_id IN
then loop through the array of users and construct a hash table using the user id as a key since it is unique.
on the front end just loop through the messages array and lookup the user.
is this solution going to be very slow if you have a large amount of messages. will it scale well since it's O(n).
solution 3 : (efficient but more data to send in the response) :
its the same as before but the difference here is adding properties to the messages object that store user data.
the problem with this solution is that you will have duplicate data since one user can publish multiple messages.
these are my solutions i hope to hear yours.
for context : system design videos on youtube don't address this part of chat apps. if you found one that does please post the link.
i have 4 fields (Name , age, class, subject) in one index (Student_Entry) and i want to add total events but i want to exclude those events who has any value in subject field.
I tried the below two ways
index=Student_Entry Subject !=* | stats count by event
index=Student_Entry NOT Subject= * | stats count by event
The NOT and != operators are similar, but not equivalent. NOT will return events with no value in the Subject field, whereas != will not. In your case, use !=. See https://docs.splunk.com/Documentation/Splunk/8.0.4/Search/NOTexpressions
stats count by event does nothing because there is no field called 'event'. To count events, just use stats count.
It looks like you were right using index=Student_Entry Subject !=*
Then you can add only - | stats count
You can do it this way, too:
index=Student_Entry
| where isnull(subject)
| stats count
Suppose I have an ActiveRecord model called Checkin and I only want to return Checkin records distinct by the user_id. Is there way to do this that returns an AR relation? I need to apply multiple scopes to it so I would prefer to avoid find_by_sql.
Example:
Let's say we have the following records
id: 1
user_id : 5
location_id: 12
id: 2
user_id: 25
location_id: 12
id: 3
user_id: 5
location_id: 12
I want to be able to say something like:
Checkin.distinct_by(:user_id) and have that return only rows 1 and 2 (because user_id=5 should be distinct). I would like this to be an ActiveRecord:Relation ideally so that I can apply other conditions onto this.
I think you should make your question more clear, can you provide some example? I don't know this is what you are looking for: you can try to use "select" or "collect" function after your where statement.
I want a table structure which can store the details of the student like the below format.
If the student is in
10 th standard -> I need his aggregate % from 1st standard to 9th standard.
5 th standard -> I need his aggregate % from 1st standard to 4th standard.
1 st standard -> No aggregate % has to be displayed.
And the most important thing is ' we need to use only one table'. Please form a table structure with no redundant values.
Any ideas will be greatly appreciated......
No friends this is not a home work. This is asked in Oracle interview, conducted in Hyderabad day before yesterday '24th July, 2010',. He asked me the table structure.
He even did not asked me the query. He asked me how I will design the table. Please advice me.
id | name | grade | aggregate
This would do the trick, id is your primary key, name is students first last name, grade is what grade he is in and aggregate is aggregate % based on the grade.
Fro example some rows might be:
10 | Bill Cosby | 10 | 90
11 | Jerry Seinfeld | 4 | 60
Bill Cosby would have aggregate percent of 90 in grades 1-9, and jerry would have 60 in grades 1-3. In this case it is one table and boils down to you managing the rule of aggregation for this table, since it has to be one table.
If this is an interview question, it looks like they would like to check your knowledge on Nested Tables. Essentially you would have one column as roll number, and other column which is a nested table as Class and Percentage.