Ubuntu 16.04.4
I'm trying to setup a 4 interface bond0. I setup the following:
10-bond0.netdev
[NetDev]
Name=bond0
Kind=bond
[Bond]
Mode=802.3ad
TransmitHashPolicy=layer3+4
MIIMonitorSec=1s
LACPTransmitRate=fast
10-bond0.network
[Match]
Name=bond0
[Network]
Address=10.38.63.1/24
20-enx00145ee890e0.network
[Match]
Name=enx00145ee890e0
[Network]
Bond=bond0
20-enx00145ee890e1.network
[Match]
Name=enx00145ee890e1
[Network]
Bond=bond0
20-enx00145ee890e2.network
[Match]
Name=enx00145ee890e2
[Network]
Bond=bond0
20-enx00145ee890e3.network
[Match]
Name=enx00145ee890e3
[Network]
Bond=bond0
Once up
root#server#cat /sys/class/net/bond0/bonding/mode
balance-rr 0
If I redefine bond0 into bond1 (I move bond0 files into bond1 ones and then adjust the info inside them) then
root#server#cat /sys/class/net/bond1/bonding/mode
802.3ad 4
Also when introducing bond1 I still get bond0 among the interfaces displayed by "ip link show" so bond0 must be defined somewhere but I don't know where.
I have to say that I have a mixed system nased on the networking and systemd-networkd service.
/etc/network/interface doesn't have any reference to bond0
I do want to get rid if networking in favour of systemd-networks but since I don't have access to the server I have to prepare things carefully and accurately.
I don't know from where the system may get that "balance-rr" and not honouring the 802.3ad in the bond0-related files.
Where can I check further?
TIA
I think I found the problem
root#brunas:/etc/systemd/network$ systemctl --version
systemd 229
I'm hitting this bug
https://github.com/systemd/systemd/issues/7025
https://github.com/systemd/systemd/issues/5971
the workaround as reported in the second link is to create
/etc/modprobe.d/bonding.conf and set
options bonding max_bonds=0
Related
I am trying to move my organisation from Centos7 to Centos8 and Rocky linux which have network manager. Due to the multi-homed system I am trying to setup scriping to autoconnect since out of the box NM loses connectivity but I am a bit stuck.
If I try to run For example
nmcli c modify ens3 "IP4.DNS[0]" "8.8.8.8"
I get the Error: invalid or not allowed setting 'IP4': 'IP4' not among [connection, 802-3-ethernet (ethernet), 802-1x, dcb, sriov, ethtool, match, ipv4, ipv6, hostname, tc, proxy]. From what I understand NM is unable to modify these settings but I not understand why, or who set them up. I suspect it is somewhere in cloud init or in the dhcp-reply ??
nmcli connection show ens3 | grep IP4
IP4.ADDRESS[1]:136.ZZ.XX.XXX/23
IP4.GATEWAY:136.ZZ.YY.YY
...
IP4.DOMAIN[1]:openstacklocal
[root#chkorocky syck]# nmcli c show ens3 | grep ipv4
ipv4.method: auto
ipv4.dns: --
ipv4.dns-search: --
ipv4.addresses: --
ipv4.gateway: --
Is there anyway to understand where these extra attributes come from? Somehow ipv4.XX do not get set up at all but instead other variables with similar names allow NM to work ?
I just got my retroflag gpi case working and set up. I have one small problem though. I can't connect my Pi to my WPA2-Enterprise network. I've tried a bunch of settings in wpa_supplicant.conf but can't get it to work.
Pi Model or other hardware: Raspberry Pi Zero W & Retroflag GPi Case
Power Supply used: Retroflag GPi's inbuilt.
RetroPie Version Used: 4.6.1
Built From: https://github.com/RetroPie/RetroPie-Setup/releases/download/4.6/retropie-buster-4.6-rpi1_zero.img.gz
USB Devices connected: Retroflag GPi
Controller used: Retroflag GPi
Error messages received:
Can't see any error messages. Don't know where they appear. It just says IP-address Unkown in show ip.
Guide used: Several on Google. This one among others: https://gist.github.com/elec3647/1e223c02ef2a9a3f836db7984011b53b.
This one for documentation: https://w1.fi/cgit/hostap/plain/wpa_supplicant/wpa_supplicant.conf
File: /etc/wpa_supplicant/wpa_supplicant.conf
Attachment of config files: (wpa_supplicant.conf)
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=SE
ap_scan=1
network={
ssid="Wifi-Name"
scan_ssid=1
identity="myusername"
password="mypassword"
key_mgmt=WPA-EAP
eap=TTLS
phase1="peapver=0 peaplabel=1"
phase2="autheap=MSCHAPV2"
}
I actually solved it just now.
For anyone wondering I managed to connect to the network on another machine (Ubuntu) and used Network Manager. I then checked the log (according to this link) with the command:
journalctl -u NetworkManager
This gave me this config for wpa_supplicant.conf:
country=SE
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
ap_scan=1
network={
ssid="Wifi-Name"
scan_ssid=1
bgscan="simple:30:-65:300"
key_mgmt=WPA-EAP WPA-EAP-SHA256
password="password"
eap=PEAP
fragment_size=1266
phase2="auth=MSCHAPV2"
identity="username"
proactive_key_caching=1
}
This might not work for everyone else since the configs are always different for every network. So be sure to do the same steps as I did if you can't get it to work.
So glad I finally got this, haha.
I follow the instructions to bootstrap a new Ceph (I'm new to Ceph) cluster.
I got the following error:
sudo cephadm bootstrap --mon-ip <mon-ip>
INFO:cephadm:Verifying podman|docker is present...
INFO:cephadm:Verifying lvm2 is present...
INFO:cephadm:Verifying time synchronization is in place...
INFO:cephadm:Unit systemd-timesyncd.service is enabled and running
INFO:cephadm:Repeating the final host check...
INFO:cephadm:podman|docker (/usr/bin/podman) is present
INFO:cephadm:systemctl is present
INFO:cephadm:lvcreate is present
INFO:cephadm:Unit systemd-timesyncd.service is enabled and running
INFO:cephadm:Host looks OK
INFO:root:Cluster fsid: e08484be-72c1-11ea-a13e-0050563f093a
INFO:cephadm:Verifying IP *<mon-ip>* port 3300 ...
INFO:cephadm:Verifying IP *<mon-ip>* port 6789 ...
ERROR: Failed to infer CIDR network for mon ip *<mon-ip>*; pass --skip-mon-network to configure it later
What does it mean ? How to fix it ?
cephadm is still fairly new. I've tracked a few days ago in:
https://tracker.ceph.com/issues/44828
Please run
ceph config set mon public_network <mon_network>
after bootstrap finished.
Is this the exact command you ran?
sudo cephadm bootstrap --mon-ip *<mon-ip>*
If so you actually need to replace *<mon-ip>* with the actual IP address that you want the monitor daemon to listen on.
For future reference, on that page, any command you see that has a variable surrounded by asterisks is something you would need to replace with an address/host/hostname etc. that applies to your environment.
I have written a program in golang to make request about 2000qps to different remote ip with local port randomly selected by linux, and close request immediately after connection established, but still encounter bind: address already in use error periodically
what I have done:
net.ipv4.ip_local_port_range is 15000-65535
net.ipv4.tcp_tw_recycle=1 net.ipv4.tcp_tw_reuse=1 net.ipv4.tcp_fin_timeout=30
above is sockstat:
sockets: used 1200 TCP: inuse 2302 orphan 1603 tw 40940 alloc 2325 mem 201
I don't figure it out why this error still there with kernel selecting available local port,will kernel return a port in use ?
This is a good answer from 2012:
https://serverfault.com/questions/342741/what-are-the-ramifications-of-setting-tcp-tw-recycle-reuse-to-1#434669
As of 2018, tcp_tw_recycle exists only in the sysctl binary, is otherwise gone from the kernel:
https://github.com/torvalds/linux/search?utf8=%E2%9C%93&q=tcp_tw_recycle&type=
tcp_tw_reuse is still in use as described in the above answer:
https://github.com/torvalds/linux/blob/master/net/ipv4/tcp_ipv4.c#L128
However, while a TCP_TIMEWAIT_LEN is in use:
https://github.com/torvalds/linux/search?utf8=%E2%9C%93&q=TCP_TIMEWAIT_LEN&type=
the value is hardcoded:
https://github.com/torvalds/linux/blob/master/include/net/tcp.h#L120
and tcp_fin_timeout refers to a different state:
https://github.com/torvalds/linux/blob/master/Documentation/networking/ip-sysctl.txt#L294
One can relatively safely change the local port range to 1025-65535.
For kicks, if there were a situation where this client was talking to servers and network under my control, I would build a new kernel with a not-to-spec TCP_TIMEWAIT_LEN, and perhaps also fiddle with tcp_max_tw_buckets:
https://github.com/torvalds/linux/blob/master/Documentation/networking/ip-sysctl.txt#L379
But doing so in other circumstances- if this client is behind a NAT and talking to common public servers- will likely be disruptive.
I bought a HotPi a while ago, and decided to use it. So I followed the procedure to configure the IR and after a few hours I was able to IR signals on my Raspberry 1.
But my purpose here is to send IR signals, which I tried, without any luck.
So this is the command I try to do (just for test):
irsend SEND_START devinput KEY_POWER ; sleep 3
And this is what lircd tells me:
lircd-0.9.4c[907]: Notice: accepted new client on /var/run/lirc/lircd
lircd-0.9.4c[907]: Info: Cannot configure the rc device for /dev/lirc0
lircd-0.9.4c[907]: Error: invalid send buffer
lircd-0.9.4c[907]: Error: this remote configuration cannot be used to transmit
lircd-0.9.4c[907]: Error: error processing command: SEND_START devinput KEY_POWER
lircd-0.9.4c[907]: Error: transmission failed
lircd-0.9.4c[907]: Info: removed client
Edit:
It seems I'm not using the good drivers. According to the HotPi documentation, I'm suppose to use lirc-rpi, which I'm suppos to install with
sudo modprobe lirc-rpi
Which, at least, doesn't return an error. But trying to configure the interface tells me that the driver doesn't exist:
pi#raspberrypi:~ $ mode2 --driver lirc-rpi --device /dev/lirc0
Driver `lirc-rpi' not found. (Missing -U/--plugins option?)
Available drivers:
accent
alsa_usb
asusdh
atilibusb
atwf83
audio
audio_alsa
awlibusb
bte
bw6130
commandir
creative
creative_infracd
default
devinput
dfclibusb
dsp
dvico
ea65
file
ftdi
ftdi-exp
ftdix
girs
i2cuser
irlink
irtoy
livedrive_midi
livedrive_seq
logitech
macmini
mouseremote
mouseremote_ps2
mp3anywhere
mplay
mplay2
pcmak
pinsys
pixelview
samsung
sb0540
silitek
slinke
sonyir
srm7500libusb
tira
tira_raw
udp
uirt2
uirt2_raw
usb_uirt_raw
usbx
zotac
Here is no info what lirc version you are using. There are vast differences between the legacy 0.9.0 still used in some distros and modern lirc.
That said, the logs seems pretty clear. You are using the devinput driver, right? This driver does not support sending data, reflecting the fact that also the kernel doesn't.
You then need to use another driver - first stop might be the default one. If/when using this other driver, you need another lircd.conf.
Please refer to http://lirc.org/html/configuration-guide.html
EDIT: Ah, lirc-0.9.4c says the log. Sorry, my bad. The reply should still be valid, though.
When you record the remote, use:
irrecord -d /dev/lirc0 -f name.conf
The -f uses raw mode. This then worked for me on the transmit side, before I got same error as you.