DPDK is a very popular infrastructure in high speed packet process domain, some applications will used the same architecture to process packet, like EPC.
For Ubuntu 18.04, it used dpdk 17.11, it not good for some other application like dpdk pktgen, but enough for testpmd and l3fwd test. here is some personal note for setup whole environment.
Ubuntu used netplan as new network manager, but it’s different with previous version.
First create a new file /etc/systemd/network/10-override-mac.link
[Match]
MacAddress=52:54:00:12:34:56
[Link]
MACAddress=52:54:00:12:34:58
52:54:00:12:34:56 is old mac, and 52:54:00:12:34:58 is new mac .
Second, modify /etc/netplan/01-netcfg.yaml, create match: and macaddress field , example
network:
version: 2
ethernets:
eth0:
dhcp4: true
match:
macaddress: ’52:54:00:12:34:58′
set-name: eth0
ref.
This is a work note for run x86_64 on ARM64 server .
Because they are different archeticture, so, run x86_64 on ARM server would be very slow.
and some functions might be different when run on different platform
kdump is very good tool to debug complex system like cloud data center, it can easy to save kernel status when crash.
Running kdump in ARM64 just like running in x86, but I met a strange problem on ARM64 platform.
The kernel version is HWE kernel, current version is 4.18.0-25, mihbt be encounter those problems
In ARM64 server and installed memory around 128G, ubuntu default /etc/default/grub.d/kdump-tools.cfg default configuration might cause kdump allocate memory failed. error message as below
Read more »[ 0.000000] cannot allocate crashkernel (size:0x80000000)
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-25-generic root=UUID=ee8be10d-d649-425d-a807-640751836186 ro console=tty0 crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
網路上找到的範例都有缺, 主要是缺 pppoe kernel module 的部份, 也不會很難, 在 Ubuntu 18.04 下需要上個 patch 修掉 compile bug.
最好的方式應該是這一篇文章
不要再用什麼 fakeroot 去編了, 失敗率超高, 尤其是在 ARM 平台
https://wiki.ubuntu.com/KernelTeam/GitKernelBuild
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Ubuntu cloud image is very good for deploy a simple qemu image system.
But the image has it owns password and initial script.
最近發生一件怪事, VM suspend 當掉之後, networkmanager 顯示 inactive
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