{"id":124044,"date":"2025-05-05T21:05:07","date_gmt":"2025-05-05T19:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/novye-versii-servisnogo-menedzhera-s6-rc-i-sistemy-iniczializaczii-s6-linux-init"},"modified":"2025-05-05T21:05:07","modified_gmt":"2025-05-05T19:05:07","slug":"novye-versii-servisnogo-menedzhera-s6-rc-i-sistemy-iniczializaczii-s6-linux-init","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/novye-versii-servisnogo-menedzhera-s6-rc-i-sistemy-iniczializaczii-s6-linux-init","title":{"rendered":"New versions of the service manager s6-rc and the s6-linux-init initialization system","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
The release of the service manager s6-rc 0.5.6.0 has been introduced, designed for managing the launch of initialization scripts and services. It supports tracking the dependency tree and automatically starting or stopping services to achieve a specified state. The s6-rc toolkit can be used in both initialization systems and for organizing the launch of arbitrary services tied to events reflecting changes in system state. The system supports initialization scripts compatible with sysv-init and can import dependency information from sysv-rc or OpenRC. The code is written in C and is distributed under the ISC license. <\/p>\n
The s6-rc service manager includes a set of utilities for starting and stopping long-running processes (daemons) or scripts that terminate immediately upon initialization. It ensures the parallel launch of independent services and guarantees a consistent sequence of script execution across different launches. All state changes are handled with respect to dependencies; for example, when starting a service, the necessary dependencies for its operation are automatically launched, and when stopping, dependent services are also halted. <\/p>\n
Unlike other service managers, s6-rc supports proactive (in offline mode) construction of a dependency graph for the existing set of services, allowing resource-intensive dependency analysis to be completed separately, rather than during boot or state change. The system is not monolithic and is divided into a series of separate and replaceable modules, each of which, in accordance with Unix philosophy, addresses only a specific task. The s6-rc project adheres to minimalism (it contains nothing superfluous) and consumes minimal resources. <\/p>\n
Instead of runlevels, s6-rc offers the concept of bundles, allowing services to be grouped by arbitrary criteria and tasks being addressed. To enhance efficiency, a compiled dependency database is created by the s6-rc-compile utility based on the content of directories with files for launching\/stopping services. The utilities s6-rc-db and s6-rc-update are provided for parsing and manipulating the database. <\/p>\n
New versions of related packages complementing s6-rc have been created simultaneously: <\/p>\n
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s6 2.13.2.0 - utilities for monitoring processes and managing processes (similar to daemontools and runit). Features such as automatic process restart after crashes, service activation upon network port access, event logging (replacement for syslogd), and controlled privilege escalation (similar to sudo) are supported.\n
s6-linux-init 1.1.3.0 - an implementation of the init process for Linux kernel-based operating systems, used for creating initialization systems that manage services and scripts with s6 and s6-rc packages.\n
s6-networking 2.7.1.0 - a set of utilities for creating network services, similar to ucspi. <\/li>\n
s6-frontend - a wrapper that recreates the functionality of daemontools and runit on top of s6. <\/li>\n
s6-portable-utils 2.3.1.0 - a set of standard Unix utilities, such as cut, chmod, ls, sort, and grep, optimized for minimal resource consumption and provided under an ISC license. <\/li>\n
s6-linux-utils 2.6.3.0 - a set of Linux-specific utilities, such as chroot, freeramdisk, logwatch, mount, and swapon.\n
mdevd 0.1.7.0 - an event manager (similar to udevd) designed for handling hotplugging of devices. The mdevd configuration is compatible with the mdev included in Busybox.\n
bcnm 0.0.2.0 - a network configurator with client-side Wi-Fi configuration capabilities.\n
execline 2.9.7.0 - a scripting language.\n
skalibs 2.14.4.0 - a library for creating secure system applications in C. <\/li>\n
s6-dns 2.4.1.0 - a set of client libraries and utilities that replace standard DNS utilities from BIND and djbdns.\n