diff --git a/pgsql11-primary-centos7/Dockerfile b/pgsql11-primary-centos7/Dockerfile
index 7613322..96ea065 100644
--- a/pgsql11-primary-centos7/Dockerfile
+++ b/pgsql11-primary-centos7/Dockerfile
@@ -34,6 +34,7 @@ ENV PGROOT="/usr/pgsql-${PGVERSION}"
 
 RUN rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm \
  && rpm -Uvh https://download.postgresql.org/pub/repos/yum/11/redhat/rhel-7-x86_64/pgdg-centos11-11-2.noarch.rpm \
+ && yum -y install wget tar \
  && yum -y update \
  && yum -y install postgresql11 postgresql11-server postgresql11-contrib postgresql11-libs \
  && yum -y clean all
@@ -45,9 +46,18 @@ COPY conf/* /conf/
 RUN chown -R postgres:postgres /conf /pgconf /pgdata /pgwal
 RUN chmod 700 /conf /pgconf /pgdata /pgwal
 
+RUN mkdir -p /usr/local/bin
+RUN cd /tmp \
+ && wget https://github.com/prometheus/node_exporter/releases/download/v0.18.0/node_exporter-0.18.0.linux-amd64.tar.gz \
+ && tar xzf node_exporter-0.18.0.linux-amd64.tar.gz \
+ && mv node_exporter-0.18.0.linux-amd64/node_exporter /usr/local/bin/node_exporter \
+ && rm -Rf node_exporter-0.18.0.linux-amd64 node_exporter-0.18.0.linux-amd64.tar.gz \
+ && chown postgres:postgres /usr/local/bin/node_exporter
+
 VOLUME ["/pgconf", "/pgdata", "/pgwal"]
 
 EXPOSE 5432
+EXPOSE 9100
 
 USER 26
 
diff --git a/pgsql11-primary-centos7/README.md b/pgsql11-primary-centos7/README.md
index f7cdcab..6900747 100644
--- a/pgsql11-primary-centos7/README.md
+++ b/pgsql11-primary-centos7/README.md
@@ -9,7 +9,7 @@ This project contains the PostgreSQL Primary image.
 make build
 
 # Run, and register the container under postgresql-primary
-podman run -p 5432:5432 --name postgresql-primary -d -e PG_DATABASE=mydb -e PG_USER_NAME=myuser -e PG_USER_PASSWORD=mypass -e PG_REPLICATION_NAME=repl -e PG_REPLICATION_PASSWORD=replpass -e PG_NETWORK_MASK=all pgsql11-primary-centos7
+podman run -p 5432:5432 -p 9100:9100 --name postgresql-primary -d -e PG_DATABASE=mydb -e PG_USER_NAME=myuser -e PG_USER_PASSWORD=mypass -e PG_REPLICATION_NAME=repl -e PG_REPLICATION_PASSWORD=replpass -e PG_NETWORK_MASK=all pgsql11-primary-centos7
 
 # psql to postgresql-primary
 psql -h localhost -p 5432 -U myuser mydb
diff --git a/pgsql11-primary-centos7/root/usr/bin/run-postgresql b/pgsql11-primary-centos7/root/usr/bin/run-postgresql
index 66b90c4..702d278 100755
--- a/pgsql11-primary-centos7/root/usr/bin/run-postgresql
+++ b/pgsql11-primary-centos7/root/usr/bin/run-postgresql
@@ -21,6 +21,14 @@
 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
+NODE_EXPORTER_PIDFILE=/tmp/node_exporter.pid
+
+function trap_sigterm() {
+    kill -SIGINT $(head -1 $NODE_EXPORTER_PIDFILE)
+}
+
+trap 'trap_sigterm' SIGINT SIGTERM
+
 if [ ! -f /pgdata/PG_VERSION ]; then
     export PG_MAX_CONNECTIONS=${PG_MAX_CONNECTIONS:-100}
     export PG_SHARED_BUFFERS=${PG_SHARED_BUFFERS:-256}
@@ -104,4 +112,7 @@ if [ ! -f /pgdata/PG_VERSION ]; then
     /usr/pgsql-11/bin/pg_ctl -D /pgdata/ stop
 fi
 
+/usr/local/bin/node_exporter >> /tmp/node_exporter.log 2>&1 &
+echo $! > $NODE_EXPORTER_PIDFILE
+
 exec /usr/pgsql-11/bin/postgres -D /pgdata/ "$@"
diff --git a/pgsql11-replica-centos7/Dockerfile b/pgsql11-replica-centos7/Dockerfile
index 71eab72..56bc2c5 100644
--- a/pgsql11-replica-centos7/Dockerfile
+++ b/pgsql11-replica-centos7/Dockerfile
@@ -34,6 +34,7 @@ ENV PGROOT="/usr/pgsql-${PGVERSION}"
 
 RUN rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm \
  && rpm -Uvh https://download.postgresql.org/pub/repos/yum/11/redhat/rhel-7-x86_64/pgdg-centos11-11-2.noarch.rpm \
+ && yum -y install wget tar \
  && yum -y update \
  && yum -y install postgresql11 postgresql11-server postgresql11-contrib postgresql11-libs \
  && yum -y clean all
@@ -45,9 +46,18 @@ COPY conf/* /conf/
 RUN chown -R postgres:postgres /conf /pgconf /pgdata /pgwal
 RUN chmod 700 /conf /pgconf /pgdata /pgwal
 
+RUN mkdir -p /usr/local/bin
+RUN cd /tmp \
+ && wget https://github.com/prometheus/node_exporter/releases/download/v0.18.0/node_exporter-0.18.0.linux-amd64.tar.gz \
+ && tar xzf node_exporter-0.18.0.linux-amd64.tar.gz \
+ && mv node_exporter-0.18.0.linux-amd64/node_exporter /usr/local/bin/node_exporter \
+ && rm -Rf node_exporter-0.18.0.linux-amd64 node_exporter-0.18.0.linux-amd64.tar.gz \
+ && chown postgres:postgres /usr/local/bin/node_exporter
+
 VOLUME ["/pgconf", "/pgdata", "/pgwal"]
 
 EXPOSE 5432
+EXPOSE 9100
 
 USER 26
 
diff --git a/pgsql11-replica-centos7/README.md b/pgsql11-replica-centos7/README.md
index f1fde21..f988095 100644
--- a/pgsql11-replica-centos7/README.md
+++ b/pgsql11-replica-centos7/README.md
@@ -9,7 +9,7 @@ This project contains the PostgreSQL Replica image.
 make build
 
 # Run, and register the container under postgresql-replica
-podman run -p 5433:5432 --name postgresql-replica -d -e PG_MASTER=192.168.1.2 -e PG_REPLICATION_NAME=repl -e PG_REPLICATION_PASSWORD=replpass -e PG_SLOT_NAME=replica1 pgsql11-replica-centos7
+podman run -p 5433:5432 -p 9101:9100 --name postgresql-replica -d -e PG_MASTER=192.168.1.2 -e PG_REPLICATION_NAME=repl -e PG_REPLICATION_PASSWORD=replpass -e PG_SLOT_NAME=replica1 pgsql11-replica-centos7
 
 # psql to postgresql-replica
 psql -h localhost -p 5433 -U myuser -c 'SELECT pg_is_in_recovery();' mydb
diff --git a/pgsql11-replica-centos7/root/usr/bin/run-postgresql b/pgsql11-replica-centos7/root/usr/bin/run-postgresql
index ddbf6cf..922a28d 100755
--- a/pgsql11-replica-centos7/root/usr/bin/run-postgresql
+++ b/pgsql11-replica-centos7/root/usr/bin/run-postgresql
@@ -21,6 +21,14 @@
 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
+NODE_EXPORTER_PIDFILE=/tmp/node_exporter.pid
+
+function trap_sigterm() {
+    kill -SIGINT $(head -1 $NODE_EXPORTER_PIDFILE)
+}
+
+trap 'trap_sigterm' SIGINT SIGTERM
+
 if [ ! -f /pgdata/PG_VERSION ]; then
     export PG_MASTER=${PG_MASTER}
     export PG_REPLICATION_NAME=${PG_REPLICATION_NAME}
@@ -56,4 +64,7 @@ if [ ! -f /pgdata/PG_VERSION ]; then
     cp /conf/recovery.conf /pgdata/
 fi
 
+/usr/local/bin/node_exporter >> /tmp/node_exporter.log 2>&1 &
+echo $! > $NODE_EXPORTER_PIDFILE
+
 exec /usr/pgsql-11/bin/postgres -D /pgdata/ "$@"