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Goal Determine whether systemd-resolved silently falls back from DNS-over-TLS to plain DNS when a certificate fails validation while operating in opportunistic mode. Constraints In opportunistic mode, a TLS handshake or certificate validation error produces the same observable result as a resolver that never offers DoT, so the host never sees a visible error
I have essentially the following code: int fileWrite(int file, void * pBuffer, size_t size) { size_t bytesWritten = (size_t)write( file, pBuffer, size ) ; if (bytesWritten != size) { return -1; } return 0; } It works if the size is 1GB, but when the size is ~2GB, it get 4K bytes left consistently. I can fix this by wrapping write in a loop and moving the buf
Why does the following program #include <stdio.h> #include <wchar.h> int main() { wprintf(L"Привет, мир!"); } print "Privet, mir!" on Linux? Specifically, why does it transliterate Russian text in Unicode into Latin as opposed to transcoding it into UTF-8 or using replacement characters? Demonstration of this behavior on Godbolt: https://godbolt.
I have been using snap for some time but after a recent upgrade, I get this error when I try opening any application Snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks I have tried various fixes but it keeps getting worse. Any idea on what I should do? I also tried sudo apt pur
Unresolved Timeout Enforcement Boundary systemd enforces service stop deadlines through TimeoutStopSec , sending SIGTERM then SIGKILL after the interval expires. The KillMode setting (control-group, process, mixed, none) controls which processes receive these signals, yet the exact termination scope remains ambiguous when a service forks children. Constraint
When a file is truncated to a smaller size, the Linux kernel may leave existing page‑cache pages that cover the truncated region intact until they are reclaimed or explicitly invalidated. This can cause subsequent reads—either via regular read() or through a shared memory mapping—to return data that was written before the truncate, i.e., stale content. The i
The goal is to set up alerts that fire when sustained memory, CPU or I/O pressure appears, using the pressure stall information (PSI) files exposed by the kernel and forwarded to the systemd journal, while avoiding alert noise from short‑lived spikes. PSI reports some, full and avg10 stall‑time fractions; choosing which metric to watch and what avg10 thresho
I have a process that exports the data from an AWS RDS MariaDB using mysqldump which has been running succesfully in a docker-image on Concourse for years. Since two nights ago the process has started failing with the error: mysqldump: Couldn't execute 'FLUSH TABLES WITH READ LOCK': Access denied for user 'admin'@'%' (using password: YES) (1045) The official
I have installed Ubuntu 20.4 LTS on WSL. My windows 10 already have the JDK installed. Do I need to install JDK on ubuntu on WSL or can I use the Windows 10 JDK in the Ubuntu? How you do Java programming on WSL? Which is the proper way? I was just wondering if I need to install all the development tools and binaries again on Linux won't it take a lot of spac
answered · 21 Dec 2024, 22:04 UTC
commented · 10 Nov 2024, 06:12 UTC
commented · 06 Nov 2024, 18:04 UTC
mariadb
java