Need to get a dump from fro ma PHP process on Debian 9. In this post will take a Linux kernel mechanism to create and manage processes dumps. Kernel’s dumps are created in another way, check Kdump на Arch Wiki. Linux Core Dump The kernel will create a process dump if it performed an invalid… Read More »
We have an AWS EC2 which suddenly rebooted. The issue is that its /var/log/messages incomplete and the latest record is about rsyslog service killed – but nothing about who killed it and why. Then I went to the journald but surprise – it stores logs only for the current boot so there was no way… Read More »
The issue happened on a fresh Arch Linux installation but the solution here can be used on any systemd-based distributive. So, during restarts system hangs for 1.5 minutes with a message like: A stop job is running for Session c1 of user setevoy (1min 30s) To check which process(es) exactly caused this you can use… Read More »
Have a new Redis service which has to run alongside with one already existing During starting this new service – it fails with the Can’t open the log file: Read-only file system error, although /var/log and log file itself have correct permissions. The root cause was not very obvious so in this post –… Read More »
I have an OpenVPN AS server running on EC2 in AWS and the openvnp client on my Arch Linux (см.OpenVPN: настройка OpenVPN Access Server и AWS VPC peering). Need to have it started and connection established after OS start. Will use the systemd, documentation is here>>>, will work with any other Linux-system. Client’s configs have… Read More »
We have a RabbitMQ service which sometimes can go down. So need to: restart it if is exited with the failure send an email notification Let’s do it via RabbitMQ’s systemd service (though there are various options, e.g. using the monit, check the Monit: мониторинг и перезапуск NGINX post). Will use two options here: RestartSec=: delay… Read More »