zabbix: add initscript for server

Adds an initscript for zabbix_server, and related helper files

+ uses a zabbix_server uci conf to enable/disable startup
+ updates the default zabbix_server.conf to work with initscript
+ add a sysctl.d conf to set max-files more appropriate for zabbix_server

Signed-off-by: Daniel F. Dickinson <[email protected]>

Author: danielfdickinson

admin/zabbix/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=zabbix
 PKG_VERSION:=7.0.12
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://cdn.zabbix.com/zabbix/sources/stable/$(basename $(PKG_VERSION))/ \
@@ -334,6 +334,8 @@ Package/zabbix-agentd-gnutls/conffiles = $(Package/zabbix-agentd/conffiles)
 
 define Package/zabbix-server/conffiles
 /etc/zabbix_server.conf
+/etc/config/zabbix_server
+/etc/sysctl.d/90-zabbix-discovery-workers.conf
 endef
 Package/zabbix-server-openssl/conffiles = $(Package/zabbix-server/conffiles)
 Package/zabbix-server-gnutls/conffiles = $(Package/zabbix-server/conffiles)
@@ -422,6 +424,12 @@ Package/zabbix-get-gnutls/install = $(Package/zabbix-get/install)
 define Package/zabbix-server/install
 	$(call Package/zabbix/install/sbin,$(1),server)
 	$(call Package/zabbix/install/etc,$(1),server)
+	$(call Package/zabbix/install/init.d,$(1),server)
+
+	$(INSTALL_DIR) $(1)/etc/sysctl.d
+	$(INSTALL_DIR) $(1)/etc/config
+	$(INSTALL_CONF) ./files/zabbix-discovery-workers.conf.sysctl $(1)/etc/sysctl.d/90-zabbix-discovery-workers.conf
+	$(INSTALL_CONF) files/zabbix_server.config $(1)/etc/config/zabbix_server
 endef
 Package/zabbix-server-openssl/install = $(Package/zabbix-server/install)
 Package/zabbix-server-gnutls/install = $(Package/zabbix-server/install)

admin/zabbix/files/zabbix-discovery-workers.conf.sysctl

@@ -0,0 +1 @@
+fs.file-max=100000

admin/zabbix/files/zabbix_server.config

@@ -0,0 +1,3 @@
+
+config zabbix_server 'general'
+    option enabled 0

admin/zabbix/files/zabbix_server.init

@@ -0,0 +1,41 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2008-2025 OpenWrt.org
+
+START=59
+
+USE_PROCD=1
+
+NAME=zabbix_server
+PROG=/usr/sbin/${NAME}
+CONFIG=/etc/zabbix_server.conf
+
+start_service() {
+	if [ -z "${CONFIG}" ]; then
+		logger "Missing configuration '${CONFIG}'"
+		exit 1
+	fi
+
+	# Get enabled config option
+	config_load "$NAME"
+	config_get_bool enabled general enabled 0
+
+	# shellcheck disable=SC2154
+	if [ "$enabled" -eq 0 ]; then
+		logger "service not enabled in /etc/config/$NAME"
+		exit 1
+	fi
+
+	mkdir -p /var/run/zabbix
+	chown zabbix:zabbix /var/run/zabbix
+	chown zabbix:zabbix ${CONFIG}
+
+	procd_open_instance
+	procd_set_param command ${PROG} -c ${CONFIG} -f
+	procd_set_param user zabbix
+	procd_set_param limits nofile="16384 100000"
+	procd_set_param file /etc/zabbix_server.conf
+	procd_set_param respawn
+	procd_set_param stdout 1
+	procd_set_param stderr 1
+	procd_close_instance
+}

admin/zabbix/patches/020-change-server-config.patch

@@ -0,0 +1,38 @@
+--- a/conf/zabbix_server.conf
++++ b/conf/zabbix_server.conf
+@@ -27,6 +27,7 @@
+ # Mandatory: no
+ # Default:
+ # LogType=file
++LogType=system
+ 
+ ### Option: LogFile
+ #	Log file name for LogType 'file' parameter.
+@@ -35,7 +36,7 @@
+ # Default:
+ # LogFile=
+ 
+-LogFile=/tmp/zabbix_server.log
++# LogFile=/tmp/zabbix_server.log
+ 
+ ### Option: LogFileSize
+ #	Maximum size of log file in MB.
+@@ -45,6 +46,7 @@ LogFile=/tmp/zabbix_server.log
+ # Range: 0-1024
+ # Default:
+ # LogFileSize=1
++LogFileSize=0
+ 
+ ### Option: DebugLevel
+ #	Specifies debug level:
+@@ -67,6 +69,10 @@ LogFile=/tmp/zabbix_server.log
+ # Default:
+ # PidFile=/tmp/zabbix_server.pid
+ 
++# Although procd does not require a pid file, zabbix uses the pidfile to
++# correctly shutdown on receipt of a TERM or INT signal.
++PidFile=/var/run/zabbix/zabbix_server.pid
++
+ ### Option: SocketDir
+ #	IPC socket directory.
+ #		Directory to store IPC sockets used by internal Zabbix services.