![]() ![]() At most max_connections connections can ever be active simultaneously. superuser_reserved_connections ( integer)ĭetermines the number of connection “ slots” that are reserved for connections by PostgreSQL superusers. Otherwise, queries will not be allowed in the standby server. When running a standby server, you must set this parameter to the same or higher value than on the master server. This parameter can only be set at server start. The default is typically 100 connections, but might be less if your kernel settings will not support it (as determined during initdb). max_connections ( integer)ĭetermines the maximum number of concurrent connections to the database server. Note that the same port number is used for all IP addresses the server listens on. The TCP port the server listens on 5432 by default. While client authentication ( Chapter 20) allows fine-grained control over who can access the server, listen_addresses controls which interfaces accept connection attempts, which can help prevent repeated malicious connection requests on insecure network interfaces. The default value is localhost, which allows only local TCP/IP “ loopback” connections to be made. If the list is empty, the server does not listen on any IP interface at all, in which case only Unix-domain sockets can be used to connect to it. The entry 0.0.0.0 allows listening for all IPv4 addresses and :: allows listening for all IPv6 addresses. The special entry * corresponds to all available IP interfaces. ![]() The value takes the form of a comma-separated list of host names and/or numeric IP addresses. I hope that this will help someone in the future.Specifies the TCP/IP address(es) on which the server is to listen for connections from client applications. So I have changed the iptables rules for IPv6 to -s fc00:xxx:xxx::/64 -o eth2 on the server and restarted the Wireguard sudo systemctl stop & sudo systemctl start on the server and on the client afterward, I had a working IPv6 connectivity. : Apparently the VM has a separate interface for the IPv4 and another one for the IPv6 connectivity, so I did: ping6 -I eth0/1/2 and found out that only on the eth2 there is IPv6 connectivity. I have enabled ipv6 forwarding on the server side using: $ sudo sysctl -p /etc/sysctl.d/nf ![]() I guess this is a problem of the IPv6 configuration. So I am having a ping to the IPv6 address of the Wireguard server but not to the Google's IPv6 DNS, which is configured as IPv6 DNS server ( 2001:4860:4860::8888) on the client. PublicKey = XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX PrivateKey = XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXĪddress = 172.16.0.4/27, fc00:xxx:xxx::4/64 PostDown = iptables -t nat -D POSTROUTING -s 172.16.0.0/27 -o eth0 -j MASQUERADE ip6tables -t nat -D POSTROUTING -s fc00:xxx:xxx::/64 -o eth0 -j MASQUERADE PreUp = iptables -t nat -A POSTROUTING -s 172.16.0.0/27 -o eth0 -j MASQUERADE ip6tables -t nat -A POSTROUTING -s fc00:xxx:xxx::/64 -o eth0 -j MASQUERADE PrivateKey = XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Here is my server configuration: # Server ConfigurationĪddress = 172.16.0.1/27, fc00:xxx:xxx::1/64 IPv4 is working just fine but IPv6 isn't. I have also installed Pi-Hole on the same VM and I am using the public IP address for DNS resolving configuration on the clients. I have set up a Wireguard server on a VM running on top of Ubuntu and a couple of clients. ![]()
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