Instalando un daemon NRPE (Nagios Remote Plugin Executor) en un SUSE Linux Enterprise Server 15 para monitorizar el sistema, me encontré con que esta versión de SUSE Linux Enterprise Server (SLES) no incluye libmcrypt-devel en sus repositorios oficiales, a diferencia de SLES 12, que sí la incluye.
HOST# zypper install libmcrypt-devel Refreshing service 'Basesystem_Module_15_x86_64'. Refreshing service 'Desktop_Applications_Module_15_x86_64'. Refreshing service 'Development_Tools_Module_15_x86_64'. Refreshing service 'SUSE_Linux_Enterprise_Server_15_x86_64'. Refreshing service 'SUSE_Package_Hub_15_x86_64'. Refreshing service 'Server_Applications_Module_15_x86_64'. Refreshing service 'Web_and_Scripting_Module_15_x86_64'. Loading repository data... Reading installed packages... 'libmcrypt-devel' not found in package names. Trying capabilities. No provider of 'libmcrypt-devel' found.Resolving package dependencies... Nothing to do.
libmcrypt-devel es una dependencia de NRPE, y sin ella, no podía continuar con la instalación de NRPE.
Me puse en contacto con SUSE y les pregunté acerca de la disponibilidad de libmcrypt-devel para SUSE Linux Enterprise Server 15. Tras hablar con ingeniería, el soporte de SUSE me contestó que este paquete fue retirado en SLE 15 porque su código no recibía actualizaciones desde 2007, y ellos no dan soporte a software obsoleto, cosa respetable.
Llegados a este punto, tenía varias opciones: podía compilar libmcrypt desde código fuente, buscar un .rpm o buscar un repositorio que incluyera el paquete pre-compilado para SLE 15. Opté por la última opción. Busqué repositorios no oficiales en software.opensuse.org que ofrecieran este paquete, pero no encontré ninguno que ofreciera libmcrypt.
Buscando de otras formas, acabé encontrando un repositorio llamado 'SNAG-View Build Services' que incluía libmcrypt-devel para SLE 15, así que añadí este repositorio al sistema:
HOST# zypper addrepo https://download.opensuse.org/repositories/home:/snagview/SLE_15/home:snagview.repo Adding repository 'SNAG-View Build Services (SLE_15)' ..................[done] Repository 'SNAG-View Build Services (SLE_15)' successfully added URI : http://download.opensuse.org/repositories/home:/snagview/SLE_15/ Enabled : Yes GPG Check : Yes Autorefresh : No Priority : 99 (default priority) Repository priorities are without effect. All enabled repositories share the same priority.
Refresqué la lista de repositorios y acepté 'SNAG-View Build Services' como fuente de confianza:
HOST# zypper refresh Repository 'SLE-Module-Basesystem15-Pool' is up to date. Repository 'SLE-Module-Basesystem15-Updates' is up to date. Repository 'SLE-Module-Desktop-Applications15-Pool' is up to date. Repository 'SLE-Module-Desktop-Applications15-Updates' is up to date. Repository 'SLE-Module-DevTools15-Pool' is up to date. Repository 'SLE-Module-DevTools15-Updates' is up to date. Repository 'SLE-Product-SLES15-Pool' is up to date. Repository 'SLE-Product-SLES15-Updates' is up to date. Repository 'SLE-Module-Packagehub-Subpackages15-Pool' is up to date. Repository 'SLE-Module-Packagehub-Subpackages15-Pool' is up to date. Repository 'SLE-Module-Packagehub-Subpackages15-Updates' is up to date. Repository 'SUSE-PackageHub-15-Pool' is up to date. Repository 'SUSE-PackageHub-15-Pool' is up to date. Repository 'SUSE-PackageHub-15-Standard-Pool' is up to date. Repository 'SUSE-PackageHub-15-Standard-Pool' is up to date. Repository 'SLE-Module-Server-Applications15-Pool' is up to date. Repository 'SLE-Module-Server-Applications15-Updates' is up to date. Repository 'SLE-Module-Web-Scripting15-Pool' is up to date. Repository 'SLE-Module-Web-Scripting15-Updates' is up to date. Retrieving repository 'SNAG-View Build Services (SLE_15)' metadata --------[\] New repository or package signing key received: Repository: SNAG-View Build Services (SLE_15) Key Name: home:snagview OBS Project Key Fingerprint: 7689214A B23FD92F 60739D1C D3358BDA 12A73586 Key Created: Tue Dec 18 16:18:43 2018 Key Expires: Thu Feb 25 16:18:43 2021 Rpm Name: gpg-pubkey-12a73586-5c190fd3 Do you want to reject the key, trust temporarily, or trust always? [r/t/a/? shows all options] (r): a Retrieving repository 'SNAG-View Build Services (SLE_15)' metadata .....[done] Building repository 'SNAG-View Build Services (SLE_15)' cache ..........[done] Repository 'Security tools (SLE_15)' is up to date. All repositories have been refreshed.
Ahora sí, ya pude instalar libmcrypt-devel y continuar con la instalación de NRPE.
HOST# zypper install libmcrypt-devel Refreshing service 'Basesystem_Module_15_x86_64'. Refreshing service 'Desktop_Applications_Module_15_x86_64'. Refreshing service 'Development_Tools_Module_15_x86_64'. Refreshing service 'SUSE_Linux_Enterprise_Server_15_x86_64'. Refreshing service 'SUSE_Package_Hub_15_x86_64'. Refreshing service 'Server_Applications_Module_15_x86_64'. Refreshing service 'Web_and_Scripting_Module_15_x86_64'. Loading repository data... Reading installed packages... Resolving package dependencies... The following 2 NEW packages are going to be installed: libmcrypt libmcrypt-devel The following 2 packages have no support information from their vendor: libmcrypt libmcrypt-devel 2 new packages to install. Overall download size: 194.2 KiB. Already cached: 0 B. After the operation, additional 676.4 KiB will be used. Continue? [y/n/...? shows all options] (y):
Ahora, a ver cuándo Nagios actualiza NRPE y usa otra librería criptográfica...