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## Fedora Demo VM
Before running the script, ensure that virt-install is available on the system.
`./build_bpf_demo.sh -n bpf-demo -k bpf_demo.ks.erb`
After setting up the initial VM, log in (the default password is 'iovisor')
and determine the DHCP IP. SSH to this IP as root.
To set up a kernel with the right options, run `bpf-kernel-setup`.
```
[root@bpf-demo ~]# bpf-kernel-setup
Cloning into 'net-next'...
```
After pulling the net-next branch, the kernel config menu should pop up. Ensure
that the below settings are proper.
```
General setup --->
[*] Enable bpf() system call
Networking support --->
Networking options --->
QoS and/or fair queueing --->
<M> BPF-based classifier
<M> BPF based action
[*] enable BPF Just In Time compiler
```
Once the .config is saved, the build will proceed and install the resulting
kernel. This kernel has updated userspace headers (e.g. the bpf() syscall) which
install into /usr/local/include...proper packaging for this will be
distro-dependent.
Next, run `bpf-llvm-setup` to pull and compile LLVM with BPF support enabled.
```
[root@bpf-demo ~]# bpf-llvm-setup
Cloning into 'llvm'...
```
The resulting libraries will be installed into /opt/local/llvm.
Next, reboot into the new kernel, either manually or by using the kexec helper.
```
[root@bpf-demo ~]# kexec-4.1.0-rc1+
Connection to 192.168.122.247 closed by remote host.
Connection to 192.168.122.247 closed.
```
Reconnect and run the final step, building and testing bcc.
```
[root@bpf-demo ~]# bcc-setup
Cloning into 'bcc'...
...
Linking CXX shared library libcc.so
[100%] Built target bcc
...
Running tests...
Test project /root/bcc/build
Start 1: py_test1
1/4 Test #1: py_test1 ......................... Passed 0.24 sec
Start 2: py_test2
2/4 Test #2: py_test2 ......................... Passed 0.53 sec
Start 3: py_trace1
3/4 Test #3: py_trace1 ........................ Passed 0.09 sec
Start 4: py_trace2
4/4 Test #4: py_trace2 ........................ Passed 1.06 sec
100% tests passed, 0 tests failed out of 4
```
|
