wpa_supplicant spam

Ubuntu 24.04 is spamming several of these entries in syslog: wpa_supplicant[1736]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-62 noise=9999 txrate=390000 The solution is to raise the wpa_supplicant logging level and restart networking: mkdir -p /etc/systemd/system/wpa_supplicant.service.d/ vi /etc/systemd/system/wpa_supplicant.service.d/log.conf # add these lines [Service] LogLevelMax=4 # save & quit systemctl daemon-reload systemctl restart wpa_supplicant.service systemctl restart NetworkManager.service

Convert HTTP response body to status code with HAproxy

[update 2025.10.29] abstract, minor clarification edits. TL;DR Program HAproxy with LUA to extract information from backends and set response headers/status codes. I'm using HAproxy to load-balance HTTP between two backend nodes. HAproxy is pretty smart about doing this, backing off failing backend nodes, retrying failed requests on healthy backend nodes etc. Recently I got a … Continue reading Convert HTTP response body to status code with HAproxy →

Ubuntu 20.04 getting wrong IP address

Yesterday (early August 2021) my Ubuntu 20.04 installation started configuring all network interfaces (wifi, ethernet) with IPv4 addresses from the wrong network segment block, namely 192.168.0.x. IPv6 still worked fine. I didn't figure out whether that's due to a change in the router or the OS (I suspect the router, because the situation improved when … Continue reading Ubuntu 20.04 getting wrong IP address →