pgbouncer無法連接到本地postgresql數據庫（超時）

Question

我試圖讓pgbouncer在獨立的postgresql服務器上工作，但是當我嘗試使用pgbouncer端口連接到數據庫時，出現超時錯誤。

PostgreSQL的：9.1.8

pgBouncer：1.4.2

操作系統：Ubuntu的LTS 12.04.2（GNU/Linux的3.8.4-x86_64的-linode31 x86_64的）

這裏是我的conf文件：

[databases] 
postgres = host=127.0.0.1 port=5432 dbname=postgres 
mydb = host=127.0.0.1 port=5432 dbname=mydb 

[pgbouncer] 
logfile = /home/username/pg_log/pgbouncer.log 
pidfile = /tmp/pgbouncer.pid 
listen_addr = xxx.xxx.xxx.xxx 
listen_port = 6432 
unix_socket_dir = /var/run/postgresql 
auth_type = md5 
auth_file = /etc/pgbouncer/userlist.txt 
admin_users = postgres 
stats_users = stats, root 
user = postgres 
pool_mode = session 
server_reset_query = DISCARD ALL 
max_client_conn = 1000 
default_pool_size = 20 
log_connections = 1 
log_disconnections = 1 
log_pooler_errors = 1 

我試着來測試像這樣的連接：

psql -p 6432 -U postgres mydb 

這裏是我的日誌文件：

28396 LOG listening on xxx.xxx.xxx.xxx:6432 
28396 LOG listening on unix:/var/run/postgresql/.s.PGSQL.6432 
28396 LOG process up: pgbouncer 1.4.2, libevent 2.0.16-stable (epoll), adns: evdns2 
28864 LOG C-0x23f7890: mydb/postgres@unix:6432 login attempt: db=mydb user=postgres 
28864 LOG C-0x23f7890: mydb/postgres@unix:6432 closing because: client unexpected eof (age=0) 
28864 LOG C-0x23f7890: mydb/postgres@unix:6432 login attempt: db=mydb user=postgres 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 new connection to server 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 closing because: connect failed (age=0) 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 new connection to server 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 closing because: connect failed (age=0) 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 new connection to server 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 closing because: connect failed (age=0) 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 new connection to server 
28864 LOG S-0x2415240: mydb/postgres@127.0.0.1:5432 closing because: connect failed (age=0) 
28864 LOG Stats: 0 req/s, in 0 b/s, out 0 b/s,query 0 us 
28864 LOG C-0x23f7890: mydb/postgres@unix:6432 closing because: client_login_timeout (server down) (age=60) 
28864 WARNING C-0x23f7890: mydb/postgres@unix:6432 Pooler Error: client_login_timeout (server down) 
28864 LOG Stats: 0 req/s, in 0 b/s, out 0 b/s,query 0 us 
28864 LOG Stats: 0 req/s, in 0 b/s, out 0 b/s,query 0 us 

有沒有別的東西，我需要改變，以使pgbouncer工作？

Answer 1

變化

listen_addresses = 'private_ip' 

到

listen_addresses = '*' 

在postgresql.conf文件。

Answer 2

看起來你正在嘗試使用Unix套接字進行連接。根據您的Postgres安裝，套接字可能已經在/ tmp中創建，而不是在/ var/run/postgres中創建。我遇到了這個問題，它一直是discussed here。

嘗試改變pgbouncer.ini配置到這一點：

unix_socket_dir = /tmp 

你也可以嘗試只通過添加-h如下連接到本地主機：

psql -p 6432 -h localhost -U postgres mydb 

希望這有助於！