use sysklogd

recipes-core/systemd-conf/files/01-remote-logging.conf

+[Journal]
+ForwardToSyslog=yes

recipes-core/systemd-conf/systemd-conf_%.bbappend

@@ -2,13 +2,18 @@ FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
 
 SRC_URI += " \
     file://eth.network \
+    file://01-remote-logging.conf \
 "
 
 FILES:${PN} += " \
     ${sysconfdir}/systemd/network/eth.network \
+    ${sysconfdir}/systemd/journald.conf.d/01-remote-logging.conf \
 "
 
 do_install:append() {
     install -d ${D}${sysconfdir}/systemd/network
     install -m 0644 ${WORKDIR}/eth.network ${D}${sysconfdir}/systemd/network
+
+    install -d ${D}${sysconfdir}/systemd/journald.conf.d
+    install -m 0644 ${WORKDIR}/01-remote-logging.conf ${D}${sysconfdir}/systemd/journald.conf.d
 }

recipes-extended/files/01-remote-logging.conf

+*.*          @syslog.service.consul                    ;RFC5424

recipes-extended/sysklogd_%.bbappend

+FILESEXTRAPATHS:prepend := "${THISDIR}/files:"
+
+FILES:${PN} += " \
+    ${sysconfdir}/syslog.d/01-remote-logging.conf \
+"
+
+do_install:append() {
+    install -m 0644 ${WORKDIR}/01-remote-logging.conf ${D}${sysconfdir}/syslog.d/01-remote-logging.conf
+}