postgresql: fix behaviour inconsistency in stx

- change data_directory to /var/lib/postgresql/19.12
- remove the initdb before service start, which is not needed
- disable postgresql service as default

Signed-off-by: Litao Gao <litao.gao@windriver.com>
Signed-off-by: Babak Sarashki <Babak.SarAshki@windriver.com>

meta-stx-distro/conf/distro/poky-stx.conf

@@ -20,6 +20,7 @@ TASK_BASIC_SSHDAEMON = "openssh-sshd openssh-sftp openssh-sftp-server"
 # Disable services by default
 SYSTEMD_AUTO_ENABLE_pn-haproxy = "disable"
 SYSTEMD_AUTO_ENABLE_pn-lighttpd = "disable"
+SYSTEMD_AUTO_ENABLE_pn-postgresql = "disable"
 
 # /var/log is mounted as a logical volume for stx,
 # so do not link to /var/volatile/log.

meta-stx-integ/recipes-dbs/postgresql/postgresql/postgresql.service.update

@@ -0,0 +1,29 @@
+[Unit]
+Description=PostgreSQL database server
+After=network.target
+
+[Service]
+Type=forking
+User=postgres
+Group=postgres
+
+# Port number for server to listen on
+Environment=PGPORT=5432
+
+# Location of database directory
+Environment=PGDATA=/var/lib/postgresql/19.12
+
+# Disable OOM kill on the postmaster
+OOMScoreAdjust=-17
+
+PermissionsStartOnly=true
+ExecStart=/usr/bin/pg_ctl start -D ${PGDATA} -s -o "-p ${PGPORT}" -w -t 300
+ExecStop=/usr/bin/pg_ctl stop -D ${PGDATA} -s -m fast
+ExecReload=/usr/bin/pg_ctl reload -D ${PGDATA} -s
+
+# Give a reasonable amount of time for the server to start up/shut down
+TimeoutSec=300
+
+[Install]
+WantedBy=multi-user.target
+""

meta-stx-integ/recipes-dbs/postgresql/postgresql_%.bbappend

@@ -1,3 +1,17 @@
 
 COMPUTE_IP="127.0.0.1"
 CONTROLLER_IP="127.0.0.1"
+
+FILESEXTRAPATHS_prepend := "${THISDIR}/postgresql:"
+
+SRC_URI += " \
+    file://postgresql.service.update \
+    "
+
+do_install_append() {
+       install -d ${D}${systemd_unitdir}/system
+       install -m 0755 ${WORKDIR}/postgresql.service.update ${D}${systemd_unitdir}/system/postgresql.service
+}
+
+FILES_${PN} += "${systemd_unitdir}/system/postgresql.service"
+