To import the PowerShell modules for VMware from PSGallery
Vsphere esxcli command for deep dive network troubleshooting
Top ESXI network command for troubleshooting->
esxcli network nic list -> (To collect all connected network details with Name, Driver, Link status, MAC, MTU)
esxcli network nic down -n vmnic0 -> To bring down
connected or faulty NIC
esxcli network nic up -n vmnic0 -> To bring up connected
or faulty N
esxcli network vswitch standard list -> Command to check
standard switch list
esxcli network vswitch standard portgroup list -> To check portgroup created inside the standard switch
esxcli network vm list -> (Command to get VM running on which network, world id)
esxcli network vm port list -w 73276 (VM World ID) -> command to get network port ID, vSwitch, portgorup, MAC, Uplink port ID and IP address
esxcli network port stats get -p 33554440 (Network port ID)->
Command to check pocket sent/received/dropped on network port ID.
esxcli network ip interface list -> Command to get created interface list like (VMk0,vmk1,vmk2) and their port ID
[root@ESXI102:~] esxcli network ip interface list
vmk0
Name: vmk0
MAC Address: 00:0c:29:19:f3:7c
Enabled: true
Portset: DvsPortset-0
Portgroup: N/A
Netstack Instance: defaultTcpipStack
VDS Name: vDSwitch
VDS UUID: 50 2c 4b af 80 5c 2d 29-82 c7 a0 74 b6 f3 5f b5
VDS Port: 22
VDS Connection: 290654427
Opaque Network ID: N/A
Opaque Network Type: N/A
External ID: N/A
MTU: 1500
TSO MSS: 65535
Port ID: 50331654
vmk1
Name: vmk1
MAC Address: 00:50:56:60:4d:58
Enabled: true
Portset: DvsPortset-0
Portgroup: N/A
Netstack Instance: defaultTcpipStack
VDS Name: vDSwitch
VDS UUID: 50 2c 4b af 80 5c 2d 29-82 c7 a0 74 b6 f3 5f b5
VDS Port: 7
VDS Connection: 290820540
Opaque Network ID: N/A
Opaque Network Type: N/A
External ID: N/A
MTU: 1500
TSO MSS: 65535
Port ID: 50331655
vmk2
Name: vmk2
MAC Address: 00:50:56:6c:88:09
Enabled: true
Portset: vSwitch0
Portgroup: VSS_MGMT
Netstack Instance: defaultTcpipStack
VDS Name: N/A
VDS UUID: N/A
VDS Port: N/A
VDS Connection: -1
esxcli network port stats get -p 50331655 (Network interface
port ID) Command to get packets received/send/dropped on interface (vmk0/1/2)
level
esxcli network diag ping -H 192.168.1.101 (-H is host name or IP) -> Command to diagnose connectivity between two ESXI host.
Trace:
Received Bytes: 64
Host: 192.168.1.101
ICMP Seq: 0
TTL: 64
Round-trip Time: 1898 us
Dup: false
Detail:
Received Bytes: 64
Host: 192.168.1.101
ICMP Seq: 1
TTL: 64
Round-trip Time: 1709 us
Dup: false
Detail:
Received Bytes: 64
Host: 192.168.1.101
ICMP Seq: 2
TTL: 64
Round-trip Time: 1581 us
Dup: false
Detail:
Summary:
Host Addr: 192.168.1.101
Transmitted: 3
Recieved: 3
Duplicated: 0
Packet Lost: 0
Round-trip Min: 1580 us
Round-trip Avg: 1729 us
Round-trip Max: 1897 us
vim-cmd hostsvc/net/query_networkhint --pnic-name=vmnic0 -> To list out CDP port details from cli
Linux and Ubuntu command
Linux and Ubuntu command
Basic command-:
Uname -: for product name
Uname –I -: for version
Uname –r -: recursive details
How to configure IP in Ubuntu
How to change existing configured IP
Bring NIC interface UP and down
nmcli con up id 'Wireless connection 1'
How to install SSH on Ubuntu-;
sudo apt update
sudo apt install openssh-server
SSH service is running type the following command
sudosystemctl status ssh
If after installation still failing to start ssh service please run this command
sudo apt-get purge openssh-serversudo apt-get install openssh-server The default setting in Debian (and hence Ubuntu) for OpenSSH Server is to deny password-based login for root and allow only key-based login. Change this line in /etc/ssh/sshd_config:
PermitRootLogin without-passwordto
PermitRootLogin yesAnd restart the SSH server:
sudo service ssh restart How to change hostname in Ubuntu-:
Open Terminal and use below command
hostnamectl to check current hostname
to rename hostname use below command
sudo hostnamectl set-hostname linuxize
Change Name and press CTRL +O and enter to save
Ctrl+X to exit.
Now change entry in host file as well for that run below command
How to install python in Ubuntu
If you are installing in on fresh installed Ubuntu and you don’t have installed essential package, you will get below error for that first run below command.
Download Python
Extract this file into home directory
Open terminal go to that path i.e
Run below command
Once configuration done run below command to install python
After installation run below command to check default phython version running
Above python has been installed on 7th Oct that is old version
Run below command to check latest version. Go into installation directory and check which version has installed
Now run below command to set default
How to install JAVA JDK
First check which version is latest one and run below command> change only software Name
How to install Apache in Ubuntu
Installation will start once installation will done.
Open browser and type local host or computer IP or 127.0.0.1 and press enter if the page is opening it means it’s working
You can run this command to start and stop apache service
How to check partition size in Ubuntu
Df–h
Here /dev/sda1 define total size and used size
How to create new partition
Now press t for Type-:
How to Save Changes in Vim
Vim Save and Quit Command
To save a file and exit Vim:
1. Switch to command mode by pressing the ESC key.
2. Press : (colon) to open the prompt bar in the bottom left corner of the window.
3. Type x after the colon and hit Enter. This will save the changes and exit.
Alternatively, a command that will also save a file and exit the text editor is:
:wq
In which case the w stands for write (=save) and q stands for quit.
Exit Without Saving Changes in Vi / Vim
To exit Vim without saving changes:
1. Switch to command mode by pressing the ESC key.
2. Press : (colon) to open the prompt bar in the bottom left corner of the window.
3. Type q! after the colon and hit Enter to exit without saving the changes.
How to Save a File in Vi / Vim Without Exiting
To save a file without exiting in Vim:
1. Switch to command mode by pressing the ESC key.
2. Type : (colon). This will open the prompt bar in the bottom left corner of the window.
3. Type w after the colon and hit Enter. This will save in Vim the changes made to the file, without exiting.
You can also rename an existing file by adding the new name after the commands.
:w [newfilename]
In the picture below, we renamed the existing example1.txt into newexample.
· Cursor movement—h, j, k, l (left, down, up, and right)
· Delete character—x
· Delete line—dd
· Mode toggle—Esc, Insert (or i)
· Quit—:q
· Quit without saving—:q!
· Run a shell command—:sh (use 'exit' to return)
· Save file—:w
· Text search—/
Linux and Ubuntu command
Linux and
Ubuntu command
Basic command-:
Uname -: for
product name
Uname –I -:
for version
Uname –r -: recursive details
How to configure IP in Ubuntu
How to change existing configured IP
Bring NIC interface UP and down
nmcli con up id 'Wireless connection 1'
How to
install SSH on Ubuntu-;
sudo apt
update
sudo apt
install openssh-server
SSH service is running type the
following command
sudosystemctl status ssh
If after installation still
failing to start ssh service please run this command
sudo apt-get purge openssh-serversudo apt-get install openssh-server
The default setting in Debian (and hence Ubuntu) for OpenSSH
Server is to deny password-based login for root and allow only key-based login.
Change this line in /etc/ssh/sshd_config:
PermitRootLogin without-passwordto
PermitRootLogin yesAnd restart the SSH server:
sudo service ssh restart
How to change
hostname in Ubuntu-:
Open Terminal
and use below command
hostnamectl to check current hostname
to rename
hostname use below command
sudo hostnamectl set-hostname linuxize
Change Name and press CTRL +O and enter to save
Ctrl+X to
exit.
Now change entry in host file as well for that run below command
How to install python in Ubuntu
If you are
installing in on fresh installed Ubuntu and you don’t have installed essential
package, you will get below error for that first run below command.
Download Python
Extract this
file into home directory
Open terminal go to that path i.e
Run below command
Once configuration done run below command to install python
After installation run below command to check default phython version running
Above python has been installed on 7th Oct that is old version
Run below
command to check latest version. Go into installation directory and check which
version has installed
Now run below command to set default
How to install JAVA JDK
First check which version is latest one and run below command> change only software Name
How to install Apache in Ubuntu
Installation will start once installation will done.
Open browser
and type local host or computer IP or 127.0.0.1 and press enter if the page is
opening it means it’s working
You can run this command to start and stop apache service
How to check partition size in Ubuntu
Df–h
Here /dev/sda1 define total size and used size
How to create new partition
Now press t for Type-:
How to Save Changes in Vim
Vim Save and Quit Command
To save a
file and exit Vim:
1. Switch to command mode by
pressing the ESC key.
2. Press : (colon) to open the
prompt bar in the bottom left corner of the window.
3. Type x after the colon
and hit Enter.
This will save the changes and exit.
Alternatively, a command that
will also save a
file and exit the text editor is:
:wq
In which case the w stands
for write (=save) and q stands
for quit.
Exit Without Saving Changes in Vi / Vim
To exit Vim without
saving changes:
1. Switch to command mode by pressing the ESC key.
2. Press : (colon) to open the prompt bar
in the bottom left corner of the window.
3. Type q! after the colon and hit Enter to exit without saving the changes.
How to Save a File in Vi / Vim Without Exiting
To save a file without exiting in
Vim:
1. Switch to command mode by
pressing the ESC key.
2. Type : (colon). This will open
the prompt bar in the bottom left corner of the window.
3. Type w after the colon
and hit Enter.
This will save in Vim the changes made to the file, without exiting.
You can also rename an
existing file by adding the new name after the commands.
:w [newfilename]
In the picture below, we renamed
the existing example1.txt into newexample.
· Cursor movement—h, j, k, l (left, down, up,
and right)
· Delete character—x
· Delete line—dd
· Mode toggle—Esc, Insert (or i)
· Quit—:q
· Quit without saving—:q!
· Run a shell command—:sh (use 'exit' to return)
· Save file—:w
· Text search—/
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