Postgresql – error: connection to server at "10.0.30.7", port 5432 failed: No route to host

at first, I want a HA PostgreSQL by repmgr

subnet its 10.0.30.0/24

da1 server 10.0.30.7 — master
da2 server 10.0.30.6 — worker
so i get error

postgres@da2:~$ repmgr -h 10.0.30.7 -U repmgr -d repmgr -f repmgr.conf standby clone --dry-run NOTICE: destination directory "/var/lib/postgresql/15/main" provided INFO: connecting to source node DETAIL: connection string is: host=10.0.30.7 user=repmgr dbname=repmgr ERROR: connection to database failed DETAIL: connection to server at "10.0.30.7", port 5432 failed: No route to host Is the server running on that host and accepting TCP/IP connections?

i can ssh

postgres@da2:~$ ssh [email protected]
[email protected]’s password:

My postgresql.conf file:
`listen_addresses = ‘*’
port = 5432

`

the da1 server – master – pg_heba.conf

da1 : 

# Database administrative login by Unix domain socket
local   all             postgres                                peer
local   all             repmgr                                  peer 
# TYPE  DATABASE        USER            ADDRESS                 METHOD
host    all             all             10.0.30.0/24            md5
# "local" is for Unix domain socket connections only
local   repmgr          repmgr                                  trust
local   all             all                                     peer
# IPv4 local connections:
host    repmgr          repmgr          10.0.30.0/24            trust
host    all             all             10.0.30.0/24            md5
host    all             all             0.0.0.0/0               md5
# IPv6 local connections:
host    all             all             0.0.0.0/0               md5
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     repmgr                                  trust
local   replication     all                                     peer
host    replication     repmgr          10.0.30.0/24            trust
host    replication     replicador      10.0.30.0/24            md5
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256

and da2 :

the da2 : 

# Database administrative login by Unix domain socket
local    all             postgres                                peer
#local   all             repmgr                                  peer 
# TYPE  DATABASE        USER            ADDRESS                 METHOD
host     repmgr         repmgr         10.0.30.7/24              md5
host      all           all            10.0.30.0/24              md5
# "local" is for Unix domain socket connections only
local   all             all                                      peer
# IPv4 local connections:
host    all             all             10.0.30.0/24             md5
# IPv6 local connections:
#host    all             all                             md5
host    all             all             ::1/128                 scram-sha-256
# Allow replication connections from localhost, by a user with the
# replication privilege.
local   replication     all                                     peer
host    replication     all             127.0.0.1/32            scram-sha-256
host    replication     all             ::1/128                 scram-sha-256

I check almost everything still unable to connect