Repmgr : It automatically promotes to new master but other standby stopped

I’m trying to setup postgre with repmgr and here is the rsult

enter image description here

The scenario is,

  1. i tried to spinup 1 primary and 2 standby.
  2. then i stop the primary so the postgres-2 got promoted.
  3. Unfortunately the postgres-3 got disconnected due to some reason but here is the error log enter image description here

It looks like it was able to connect but the postgres restared and didn’t come back. 4. I spin up another standby but the master it was pointing is the old one which is postgres-1 That might be the reason why it is saying !running and still primary even if the actual primary is postgres-2.

My question is how can i make other standby not disconnected every time i promoted (automatically due to failure etc.) a new primary?

here is my repmgr.conf

NET_IF=`netstat -rn | awk '/^ {thif=substr($  0,74,10); print thif;} /^default.*UG/ {thif=substr($  0,65,10); print thif;}'` NET_IP=`ifconfig $  {NET_IF} | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v ''`   HOSTNAME='postgres-'$  {my_node}  cat<<EOF > /etc/repmgr.conf     node_id=$  {my_node}     node_name=$  HOSTNAME     conninfo='host=$  {NET_IP} user=repmgr password=repmgr dbname=repmgr connect_timeout=2'     data_directory='$  {PGDATA}'      log_level=INFO     log_facility=STDERR     log_status_interval=300          pg_bindir='/usr/lib/postgresql/10/bin'     use_replication_slots=1          failover=automatic     promote_command='repmgr standby promote'     follow_command='repmgr standby follow -W' EOF 

Also, I’m running using docker extending the official postgres docker image

FROM postgres:10  RUN echo "deb stretch-pgdg main 10" \           >> /etc/apt/sources.list.d/pgdg.list  # RUN ln -s /home/postgres/repmgr.conf /etc/repmgr.conf  RUN apt-get update && apt-get install wget -y RUN apt-get install net-tools -y RUN apt-get update; apt-get install -y git make postgresql-server-dev-10 libpq-dev postgresql-10-repmgr repmgr-common  #RUN wget -c -O - | tar -xz  RUN touch /etc/repmgr.conf; \     chown postgres:postgres /etc/repmgr.conf  ENV PRIMARY_NAME=localhost ENV REPMGR_USER=repmgr ENV REPMGR_DB=repmgr ENV REPMGR_PASSWORD=repmgr  COPY postgresql.replication.conf /tmp/postgresql.replication.conf  COPY scripts/*.sh /docker-entrypoint-initdb.d/ 

Lastly, here is how i check if should be register as primary or standby

PGHOST=$  {PRIMARY_NAME}  installed=$  (psql -qAt -h $  {PGHOST} repmgr -c "SELECT 1 FROM pg_tables WHERE tablename='nodes'")  if [ "$  {installed}" != "1" ]; then     echo "Registering as PRIMARY SERVER"     repmgr primary register else     my_node=$  (grep node_id /etc/repmgr.conf | cut -d= -f 2)     is_reg=$  (psql -qAt -h $  {PGHOST} repmgr -c "SELECT 1 FROM repmgr.nodes WHERE node_id=$  {my_node}")      if [ "$  {is_reg}" != "1" ] && [ $  {my_node} -gt 1 ]; then         echo "Registering as STANDBY SERVER"          pg_ctl -D $  {PGDATA} stop -m fast         rm -Rf $  {PGDATA}/*         repmgr -h $  {PRIMARY_NAME} -d repmgr standby clone --fast-checkpoint         pg_ctl -D $  {PGDATA} start &         sleep 1         repmgr -h $  {PRIMARY_NAME} -d repmgr standby register         fi fi 

here is my update for the postgres.conf

 sed -i "s/#*\(shared_preload_libraries\).*/='repmgr'/;" $  {PGDATA}/postgresql.conf sed -i "s/#port = 5432/port = 5432/g" $  {PGDATA}/postgresql.conf sed -i "s/#max_wal_senders/max_wal_senders/g"  $  {PGDATA}/postgresql.conf sed -i "s/#wal_level/wal_level/g"  $  {PGDATA}/postgresql.conf sed -i "s/#max_replication_slots/max_replication_slots/g"  $  {PGDATA}/postgresql.conf sed -i "s/#hot_standby/hot_standby/g"  $  {PGDATA}/postgresql.conf  sed -i "s/#archive_mode = off/archive_mode = on/g"  $  {PGDATA}/postgresql.conf  echo "archive_command = '/bin/true'" >>  $  {PGDATA}/postgresql.conf 

I’m using postgres:10 and repmgr-5.0

hope someone could help me on this. Thanks,

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