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ARUN P MOHAN 2arunpmohan

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2arunpmohan / logstash logs_indexing common guide lines.md
Last active April 21, 2024 14:34
logs_indexing common guide lines

For that first get the process id (pid) from the below command

        ps aux | grep logstash

After the collection of pid (suppose the pid = 6666) from above, use that like below to get the start time

        ps -eo pid,cmd,lstart | grep 6666
@2arunpmohan
2arunpmohan / scp guide.md
Last active December 25, 2021 15:31

SCP operations

scp to factweavers

scp /var/www/html/teknion-ui.zip root@factweavers.com:~/../var/www/html

scp a file from factweavers

scp root@factweavers.com:/var/www/html/teknion-ui-new.zip /var/www/html/

@2arunpmohan
2arunpmohan / linux find the size of a directory in terminal.md
Last active December 25, 2021 15:23

Size of all the directories, files etc in the current directory in human-readable format.

du -sh *

command to know the free space in the disk:

df -h .

https://unix.stackexchange.com/a/185777

@2arunpmohan
2arunpmohan / journal d
Created December 13, 2019 04:44
A systemd component called journald collects and manages journal entries from all parts of the system. This is basically log information from applications and the kernel.
**1. To see all log entries, starting at the oldest entry**
`journalctl`
**2. journal entries from the current boot**
`journalctl -b`
@2arunpmohan
2arunpmohan / systemctl help
Created December 13, 2019 04:37
**1. start a service**
`sudo systemctl start nginx.service`
**2. Stop a service**
`sudo systemctl stop nginx.service`
**3.Restart a service**
@2arunpmohan
2arunpmohan / configFileChanges.yml
Created September 8, 2016 06:15
XMLHttpRequest cannot load http://localhost:9233/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access.
network.host: 0
http.port: 9233
http.cors.enabled: true
http.cors.allow-origin: '*'
@2arunpmohan
2arunpmohan / defaultSizeChanger.md
Created September 8, 2016 06:19
"from" size default limit 10000
@2arunpmohan
2arunpmohan / start mySql.md
Created September 8, 2016 06:37
mySql operations

start mysql in ubuntu mysql -u root -p (after entering this, we will be asked password. For office system it is "factweavers")

@2arunpmohan
2arunpmohan / new_gist_file_0
Created September 8, 2016 06:38
database operations mySql
list all databases in database
show databases;
create a database
create databaseName
@2arunpmohan
2arunpmohan / table operations mysql.md
Created September 8, 2016 06:43
table operations mySql

show the tables inside a database show tables;

create a table create table TableName(columndetails) eg: create table EmployeeDetails (PersonID int, LastName varchar(255), FirstName varchar(255), City varchar(255));

insert data to a table INSERT INTO EmployeeDetails (PersonID, LastName, FirstName, City) VALUES ('4005','Kallis','Jaques','Cape Town');