Postgres 10 shutting down on installation in Ubuntu 14

On trying to install postgres on Ubuntu 14 I am seeing postgres is shutting down. I am seeing the below errors in logs

[19043] LOG:  listening on IPv4 address "127.0.0.1", port 5432
[19043] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
[19044] LOG:  database system was shut down at 2017-12-16 02:41:39 PST
[19043] LOG:  database system is ready to accept connections
[19051] [unknown]@[unknown] LOG:  incomplete startup packet
[19043] LOG:  received fast shutdown request
[19043] LOG:  aborting any active transactions
[19043] LOG:  worker process: logical replication launcher (PID 19050) exited with exit code 1
[19045] LOG:  shutting down
[19043] LOG:  database system is shut down

Can some one let me know what could be going wrong? Why is postgres shutting down after the installation ?

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listening on IPv4 address "127.0.0.1", port 5432, listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432", database system is ready to accept connections

Just your server starting up.

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database system was shut down at 2017-12-16 02:41:39 PST

You always get this message at bootup, it's produced by the "expected state" of the write-ahead log manager.

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incomplete startup packet

Nothing happened here.. a client buzzed in and then left., produced by a backend.

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received fast shutdown request, aborting any active transactions, database system is shut down, worker process: logical replication launcher (PID 19050) exited with exit code 1

This is just the postmaster shutting down

StackExchange Database Administrators Q#193325, answer score: 2