Substratum Node on Linux (Ubuntu Server 16.x)

sudo apt-get install ssh openssh-server gcc make pkg-config git

Docker
https://docs.docker.com/install/linux/docker-ce/ubuntu

systemctl start docker

EVE-NG Troubleshooting


Router doesn't boot

*First try to simply "wipe" the router*

*If the wipe doesn't help do the following*
When the icon goes immediately from blue to grey, you can 

1)

check if the router is not already running by doing 

ps -ef | grep "D <ID of the router>" (you can find the ID of the router by right-clicking on the icon in the GUI

If there are running processes first try to kill it nicely via

kill -15 <ID>

If still running

kill <ID>

If still running

kill -9 <ID>

2) 

Read the file /opt/unetlab/data/Logs/unl_wrapper.txt
Go to the directory of the router
Execute the command manually (without the redirect)
This will start a child process
Execute the child command manually and look for errors

Example:

cat /opt/unetlab/data/Logs/unl_wrapper.txt 

check the last entries and do the same manually

cd /opt/unetlab/tmp/0/c1c2b011-55e4-4279-b489-0cb8684710bb/5

/opt/unetlab/wrappers/qemu_wrapper -C 49787 -T 0 -D 5 -t "CSR2" -F /opt/qemu-2.2.0/bin/qemu-system-x86_64 -d 0 --  -nographic -device e1000,netdev=net0,mac=50:00:00:05:00:00 -netdev tap,id=net0,ifname=vunl1_0_5_0,script=no -device e1000,netdev=net1,mac=50:00:00:05:00:01 -netdev tap,id=net1,ifname=vunl1_0_5_1,script=no -device e1000,netdev=net2,mac=50:00:00:05:00:02 -netdev tap,id=net2,ifname=vunl1_0_5_2,script=no -device e1000,netdev=net3,mac=50:00:00:05:00:03 -netdev tap,id=net3,ifname=vunl1_0_5_3,script=no -smp 1 -m 3072 -name CSR2 -uuid a2c2cd71-1673-48d0-8907-a135ad73af83 -hda hda.qcow2 -machine type=pc-1.0,accel=kvm -serial mon:stdio -nographic -nodefconfig -nodefaults -rtc base=utc

TAG=T0D5- /opt/qemu-2.2.0/bin/qemu-system-x86_64 -nographic -device e1000,netdev=net0,mac=50:00:00:05:00:00 -netdev tap,id=net0,ifname=vunl1_0_5_0,script=no -device e1000,netdev=net1,mac=50:00:00:05:00:01 -netdev tap,id=net1,ifname=vunl1_0_5_1,script=no -device e1000,netdev=net2,mac=50:00:00:05:00:02 -netdev tap,id=net2,ifname=vunl1_0_5_2,script=no -device e1000,netdev=net3,mac=50:00:00:05:00:03 -netdev tap,id=net3,ifname=vunl1_0_5_3,script=no -smp 1 -m 3072 -name CSR2 -uuid a2c2cd71-1673-48d0-8907-a135ad73af83 -hda hda.qcow2 -machine type=pc-1.0,accel=kvm -serial mon:stdio -nographic -nodefconfig -nodefaults -rtc base=utc

Try to see what error message you get.

EVE-NG Troubleshooting connectivity between routers

Packets don't show up on the other side of the link
To check the underlying bridge (each link between routers is a hidden bridge), connect to the console of eve (ssh, ...)

*new format as of 7.x*

root@eve-ng:~# brctl show

bridge name     bridge id               STP enabled     interfaces

vnet004000c0006         8000.024b68364614       no              vun004000c01900

                                                                                                vun004000c01d01

vnet00... are the bridges. 

vun00<x>000c0<yy><zz> are the interfaces in your lab. 

x is the user POD-ID -> Management -> Node Management -> Lab ID

yy = Router ID in hex-> can be found by right-clicking on the router (shown between brackets) and converting it to hex.

zz = interface number

interfaceID is 

for ethernet:

e0/0 = 00

e0/1 = 10

e0/2= 20

e1/0 = 01

e2/0  = 02

for Gigabit:

Gi1 = 00

Gi2 = 01

Gi3 = 02

...

For example, bridge vnet004000c0006 connects

vun004000c01900 = router 25 (hex 19) interface 0/0  (or Gigab

with

vun004000c01d01 = router 29 (hex 1d) interface 1/0 

More details

root@eve-ng:~# brctl showstp vnet00100000009

vnet00100000009

 bridge id              8000.76a0d8456b74

 designated root        8000.76a0d8456b74

 root port                 0                    path cost                  0

 max age                  20.00                 bridge max age            20.00

 hello time                2.00                 bridge hello time          2.00

 forward delay            15.00                 bridge forward delay      15.00

 ageing time               0.00

 hello timer               0.00                 tcn timer                  0.00

 topology change timer     0.00                 gc timer                   0.00

 flags

vun001000002400 (2)

 port id                8002                    state                forwarding

 designated root        8000.76a0d8456b74       path cost                100

 designated bridge      8000.76a0d8456b74       message age timer          0.00

 designated port        8002                    forward delay timer        0.00

 designated cost           0                    hold timer                 0.00

 flags

vun001000002c30 (1)

 port id                8001                    state                forwarding

 designated root        8000.76a0d8456b74       path cost                100

 designated bridge      8000.76a0d8456b74       message age timer          0.00

 designated port        8001                    forward delay timer        0.00

 designated cost           0                    hold timer                 0.00

 flags

If they are not in forwarding then communication will not work. This bridge should disappear when the link is down (neither side has a running router) in the GUI of eve-ng. If it remains try to delete it manually:

brctl delif vnet00100000009  vun001000002400
brctl delif vnet00100000009  vun001000002c30
brctl delbr vnet00100000009

If the last command doesn't work.Then delete it on a linux level:

root@eve-ng:~# brctl delbr vnet00100000009
bridge vnet00100000009 is still up; can't delete it
root@eve-ng:~# ip link del vnet00100000009

To check on a linux level the status of the bridges &interfaces:

ip link
ip link show vun001000002c30
or 
dmesg

If the link is down you can do: 
 

ip link set vun001000002c30 up

EVE-NG Copy&paste


To copy between host and eve-ng native client, while in the client, click CTRL-ALT-SHIFT which will bring up the HTML5_Desktop_Admin side panel.

Copy what you want to that window, select it again and do CTRL-C and then you can paste it. Works bidirectional.