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ISEN/Cloud Computing/CIPA4/Cloud Computing Cours 2.md
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@@ -39,4 +39,32 @@ Q: which IP addres the router is having as external gateway?
openstack server create --image 'Debian 12' --flavor small --network private --key-name isen myvm01
```
Q: can you access to your instance in SSH?
No
### Floating IP
```bash
openstack server add floating ip myvm01 51.91.90.76
```
Q: what IP can you see on ens3 interface of the instance?
```Bash
debian@myvm01:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc fq_codel state UP group default qlen 1000
link/ether fa:16:3e:89:ad:33 brd ff:ff:ff:ff:ff:ff
altname enp0s3
inet 192.168.42.82/24 metric 100 brd 192.168.42.255 scope global dynamic ens3
valid_lft 86313sec preferred_lft 86313sec
inet6 fe80::f816:3eff:fe89:ad33/64 scope link
valid_lft forever preferred_lft forever
```
## Userdata
### Start an instance
```bash
openstack server create --image 'Debian 12' --flavor small --network private --key-name isen --user-data postinstall.sh myvm01
```