chore(db): change max_connections of postgres to 1024

Signed-off-by: He Weiwei <hweiwei@vmware.com>

make/harbor.yml.tmpl

@@ -40,8 +40,8 @@ database:
   # The maximum number of connections in the idle connection pool. If it <=0, no idle connections are retained.
   max_idle_conns: 50
   # The maximum number of open connections to the database. If it <= 0, then there is no limit on the number of open connections.
-  # Note: the default number of connections is 100 for postgres.
-  max_open_conns: 100
+  # Note: the default number of connections is 1024 for postgres of harbor.
+  max_open_conns: 1000
 
 # The default data volume
 data_volume: /data

make/photon/db/docker-entrypoint.sh

@@ -107,4 +107,14 @@ EOSQL
         echo
 fi
 
-postgres -D $PGDATA
+POSTGRES_PARAMETER=''
+
+file_env 'POSTGRES_MAX_CONNECTIONS' '1024'
+# The max value of 'max_connections' is 262143
+if [ $POSTGRES_MAX_CONNECTIONS -le 0 ] || [ $POSTGRES_MAX_CONNECTIONS -gt 262143 ]; then
+        POSTGRES_MAX_CONNECTIONS=262143
+fi
+
+POSTGRES_PARAMETER="${POSTGRES_PARAMETER} -c max_connections=${POSTGRES_MAX_CONNECTIONS}"
+
+postgres -D $PGDATA $POSTGRES_PARAMETER