Carbon user implementation

contrib/carbonapi/deb/carbonapi.service

@@ -11,6 +11,8 @@ PIDFile=/var/run/carbonapi/carbonapi.pid
 LimitNOFILE=200000
 RuntimeDirectory=carbonapi
 RuntimeDirectoryMode=0755
+User=carbon
+Group=carbon
 
 [Install]
 WantedBy=multi-user.target

contrib/carbonapi/fpm/carbon-user-systemd-reload.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+# based on https://github.com/leoleovich/grafsy/blob/master/packaging/postinst
+
+# Abort if any command returns an error value
+set -e
+
+USER=carbon
+GROUP=carbon
+CONF=/etc/carbonapi/carbonapi.yaml
+PIDFILE=/var/run/carbonapi/carbonapi.pid
+LOGFILE=/var/log/carbonapi/carbonapi.log
+
+# Following user part should be tested on both RPM and DEB systems
+if ! getent group "${GROUP}" > /dev/null 2>&1 ; then
+  groupadd --system "${GROUP}"
+fi
+GID=$(getent group "${GROUP}" | cut -d: -f 3)
+if ! id "${USER}" > /dev/null 2>&1 ; then
+  adduser --system --home /dev/null --no-create-home \
+    --gid "${GID}" --shell /bin/false \
+    "${USER}"
+fi
+
+# fix PID permissions
+if [ -f "${PIDFILE}" ]; then
+    chown "${USER}":"${GROUP}" "${PIDFILE}"
+fi
+
+# fix log permissions
+if [ -f "${LOGFILE}" ]; then
+    chown "${USER}":"${GROUP}" "${LOGFILE}"
+fi
+
+if [ ! -e "${CONF}" ]; then
+  echo "For use this software you have to create ${CONF} file. You could use /usr/share/carbonapi/carbonapi.example.yaml as default"
+else
+  # On debian jessie (systemd 215) it fails if symlink already exists
+  systemctl is-enabled carbonapi || systemctl enable carbonapi
+  # Check if systemd is up and running, e.g. not in chroot
+  if systemctl 1>/dev/null 2>&1; then
+    systemctl daemon-reload
+    systemctl restart carbonapi.service
+  fi
+fi

contrib/carbonapi/rhel/carbonapi.service

@@ -11,6 +11,8 @@ PIDFile=/var/run/carbonapi/carbonapi.pid
 LimitNOFILE=200000
 RuntimeDirectory=carbonapi
 RuntimeDirectoryMode=0755
+User=carbon
+Group=carbon
 
 [Install]
 WantedBy=multi-user.target