i have disabled all monitoring i am aware of for postgresql. ( it is sensu/collectd/ and occasional queries via haproxy and pgbouncer) i have disabled them all. i did tcpdump (i am not a pro here), but ignored the ip6 loopback. i'll paste the output once i get again. Regards, Vijay On Thu, Nov 1, 2018 at 7:17 PM Vijaykumar Jain <vjain@xxxxxxxxxxxxx> wrote: > > ok i enabled log_connections > > 2018-11-01 13:44:18 UTC LOG: connection received: host=::1 port=47574 > 2018-11-01 13:44:18 UTC LOG: incomplete startup packet > > i see this in my /etc/hosts > > ::1 localhost ip6-localhost ip6-loopback > > > and > > host all all ::1/128 md5 > > in my hba,conf > > > i'll check why there is an attempt to make a connection. > > > Regards, > Vijay > On Thu, Nov 1, 2018 at 6:57 PM Vijaykumar Jain <vjain@xxxxxxxxxxxxx> wrote: > > > > Hi Team, > > > > I know this is has been answered a lot on the internet wrt ignoring, > > but i am unable to figure out why I get these messages in logs > > "incomplete startup packet" > > > > I have a server running postgresql 10.5 on ubuntu16.04 > > > > i do not have any active external connections other than streaming > > postgres replication. > > > > > > postgres 7757 1 0 12:20 ? 00:00:00 > > /usr/lib/postgresql/10/bin/postgres -D /var/lib/postgresql/10/main -c > > config_file=/etc/postgresql/10/main/postgresql.conf > > > > postgres 7759 7757 0 12:20 ? 00:00:00 postgres: 10/main: > > checkpointer process > > > > postgres 7760 7757 0 12:20 ? 00:00:00 postgres: 10/main: > > writer process > > > > postgres 7761 7757 0 12:20 ? 00:00:00 postgres: 10/main: wal > > writer process > > > > postgres 7762 7757 0 12:20 ? 00:00:00 postgres: 10/main: > > autovacuum launcher process > > > > postgres 7763 7757 0 12:20 ? 00:00:00 postgres: 10/main: > > archiver process > > > > postgres 7764 7757 0 12:20 ? 00:00:00 postgres: 10/main: > > stats collector process > > > > postgres 7765 7757 0 12:20 ? 00:00:00 postgres: 10/main: > > bgworker: logical replication launcher > > > > postgres 7779 7757 0 12:20 ? 00:00:00 postgres: 10/main: wal > > sender process replicator x.x.x.x(47792) streaming 3/FA0001B0 > > > > postgres 7780 7757 0 12:20 ? 00:00:00 postgres: 10/main: wal > > sender process replicator x.x.x.x(50526) streaming 3/FA0001B0 > > > > postgres 7786 7757 0 12:21 ? 00:00:00 postgres: 10/main: wal > > sender process barman_streaming x.x.x.x(43566) streaming 3/FA0001B0 > > > > > > > > also, > > > > postgres=# select backend_type, query from pg_stat_activity; > > > > backend_type | query > > > > ---------------------+--------------------------------------------------- > > > > autovacuum launcher | > > > > background worker | > > > > walsender | > > > > walsender | > > > > walsender | > > > > client backend | select backend_type, query from pg_stat_activity; > > > > background writer | > > > > checkpointer | > > > > walwriter | > > > > > > > > but i still see > > > > > > tail -1000 /var/log/postgresql/postgresql-10-main.log| grep > > 'incomplete startup packet' > > > > 2018-11-01 13:04:18 UTC LOG: incomplete startup packet > > > > 2018-11-01 13:08:18 UTC LOG: incomplete startup packet > > > > 2018-11-01 13:12:18 UTC LOG: incomplete startup packet > > > > > > Note: exactly at 4 min interval. > > > > i do not know C, but i tried to understand something from > > https://github.com/postgres/postgres/blob/197e4af9d5da180190a0f2be851b095dba57d9cd/src/backend/postmaster/postmaster.c#L1891 > > > > without any active connections, i would rule any driver issue out. > > > > i do not have ssl enabled, but not using it. I tried disabling it too. > > > > postgres=# show ssl; > > > > ssl > > > > ----- > > > > off > > > > (1 row) > > > > > > > > I do not know, why those log messages are then showing up. > > > > not errors in > > > > ens160 Link encap:Ethernet HWaddr 00:50:56:a4:53:b6 > > > > inet addr:x.x.x.x Bcast:x.x.x.x Mask:x.x.x.x > > > > inet6 addr: xxxxx/64 Scope:Link > > > > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > > > > RX packets:45403371 errors:0 dropped:0 overruns:0 frame:0 > > > > TX packets:8834699 errors:0 dropped:0 overruns:0 carrier:0 > > > > collisions:0 txqueuelen:1000 > > > > RX bytes:6417380742 (6.4 GB) TX bytes:56209193635 (56.2 GB) > > > > > > lo Link encap:Local Loopback > > > > inet addr:127.0.0.1 Mask:255.0.0.0 > > > > inet6 addr: ::1/128 Scope:Host > > > > UP LOOPBACK RUNNING MTU:65536 Metric:1 > > > > RX packets:28985185 errors:0 dropped:0 overruns:0 frame:0 > > > > TX packets:28985185 errors:0 dropped:0 overruns:0 carrier:0 > > > > collisions:0 txqueuelen:1 > > > > RX bytes:7078785550 (7.0 GB) TX bytes:7078785550 (7.0 GB) > > > > > > > > > > > > > > > > Regards, > > Vijay
