How to check I/O throughput and latency in Linux servers
Hello,
Recently our servers started behaving really strange. Suddenly they became very slow. Even I try with small commands such as ls,top I have got the output after a while but not with regular response.
After analyzing running process and CPU utilization I went looking for I/O speed and that is where we found the issue.
So...
How to check telnet for multiple IP at a time using Bash
How to check telnet for multiple IP at a time using Bash
Hello,
If you have multiple number of server and you would like check whether a particlur port open or not, generally you use telnet as below
[root@localhost ~]# telnet 192.168.56.102 22
Trying 192.168.56.102...
Connected to 192.168.56.102.
Escape character is '^]'.
SSH-2.0-OpenSSH_7.5
^]
telnet> q
Connection closed.
[root@localhost...
How to check what SSL Ciphers are supported by your JVM
How to check what SSL Ciphers are supported by your JVM
Hello Team,
If you ever wondered what are the SSL Ciphers supported by your appliaction which running on particular JVM, then you can find it with below program.
Note: Make sure you are switched into user who is allowed to start your application.
Go to /tmp directory and createa file named as Ciphers.java
import java.util.Iterator;
import...
How to: Oracle Sqlplus important flags for spool a table into CSV
How to: Oracle Sqlplus important flags for spool a table into CSV
Hello,
If you are trying to export a large table from a database via SQL Developer, it will take a lot of time. So to reduce the time and effort and you can log into or connect to remote Oracle DB via SQLPlus.
And while importing the data, to get proper structuring to your data below flags will help you.
set colsep...
How to check TLS version support for a remote SSL URL by using openssl ?
How to check TLS version support for a remote SSL URL by using openssl ?
As recently many service providers are disabling the weak ciphers, TLSv1.2 becoming most trusted cipher at this moment compaing with TLSv1, TLSv1.1.
If you want to know more about these protocols, please refer
https://www.wolfssl.com/differences-between-ssl-and-tls-protocol-versions/
So if you are using services...
How to get agent or nodes list from Puppet master
If you are trying to list all the nodes connected to your puppet server, then you can use below command.
# puppet cert list --all
For example,
[root@puppetserver production]# puppet cert list --all
+ "debian.mylabserver.com" (SHA256) 63:17:8A:7D:E1:94:D4:BA:F8:7E:E5:09:4A:D4:A4:67:0A:62:8C:EF:AE:F3:4B:35:33:48:8C:46:55:90:0C:F6
+ "puppetserver.mylabserver.com" (SHA256) D5:9F:9C:10:22:92:53:7C:29:F4:A6:E6:84:A2:53:FE:74:B6:9F:87:B0:55:65:A4:D4:5F:B9:CD:09:71:0E:FA...
Subscribe to:
Posts (Atom)
