postgres提示pg_ctl: could not start server Examine the log output.

使用命令启动postgre数据库时，提示如下错误。

pg_ctl -D ..\data -l logfile start

waiting for server to start....Active code page: 65001
 stopped waiting
pg_ctl: could not start server
Examine the log output.

查看pgsql\bin\logfile，信息如下

2021-04-15 01:02:00.566 GMT [17832] LOG:  could not bind IPv6 address "::1": Permission denied
2021-04-15 01:02:00.566 GMT [17832] HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
2021-04-15 01:02:00.567 GMT [17832] LOG:  could not bind IPv4 address "127.0.0.1": Permission denied
2021-04-15 01:02:00.567 GMT [17832] HINT:  Is another postmaster already running on port 5432? If not, wait a few seconds and retry.
2021-04-15 01:02:00.567 GMT [17832] WARNING:  could not create listen socket for "localhost"
2021-04-15 01:02:00.567 GMT [17832] FATAL:  could not create any TCP/IP sockets
2021-04-15 01:02:00.570 GMT [17832] LOG:  database system is shut down

根据日志判断，应该是5432端口被占用。查找被占用端口的进程号，提示如下。

netstat -ano | findstr 5432

TCP    0.0.0.0:5432           0.0.0.0:0              LISTENING       6184
  TCP    10.80.78.38:56424      40.90.189.152:443      ESTABLISHED     15432
  TCP    10.80.78.38:60569      52.114.76.34:443       ESTABLISHED     15432
  TCP    [::]:5432              [::]:0                 LISTENING       6184

使用命令删掉6184后，

taskkill /F /pid 6184

SUCCESS: The process with PID 6184 has been terminated.

再次启动，则服务正成。