.pgpass 似乎不起作用。你能检查我的 pgagent 设置吗？
OS : centos 7 ( I did NOT disable selinux )
Database : postgresql 9.6.5
pgagent : pgagent_96 3.4.0-9.rhel7 ( installed package using yum )
- 我以 'frank' 用户身份登录 centos 服务器
在启动 pgagent 之前，我检查了 pgagent 的状态。（我没有启用 pgagent_96 服务。）
[frank@web]$ systemctl status pgagent_96.service ● pgagent_96.service - PgAgent for PostgreSQL 9.6 Loaded: loaded (/usr/lib/systemd/system/pgagent_96.service; disabled; vendor preset: disabled) Active: inactive (dead)我开始了 pgagent。起初它看起来很成功。但是几十秒后，它无法创建连接并死了。（在启动 CentOs 时问我 frank 的操作系统密码。）
[frank@web]$ systemctl start pgagent_96.service [frank@web]$ systemctl status pgagent_96.service ● pgagent_96.service - PgAgent for PostgreSQL 9.6 Loaded: loaded (/usr/lib/systemd/system/pgagent_96.service; disabled; vendor preset: disabled) Active: active (running) since 2017-10-16 16:42:11 KST; 5s ago Process: 9507 ExecStart=/usr/bin/pgagent_96 -s ${LOGFILE} hostaddr=${DBHOST} dbname=${DBNAME} user=${DBUSER} port=${DBPORT} (code=exited, status=0/SUCCESS) Main PID: 9510 (pgagent_96) CGroup: /system.slice/pgagent_96.service └─9510 /usr/bin/pgagent_96 -s /var/log/pgagent_96.log hostaddr=127.0.0.1 dbname=postgres user=postgres port=5432 16 Oct 16:42:11 web.frank.net systemd[1]: Starting PgAgent for PostgreSQL 9.6... 16 Oct 16:42:11 web.frank.net systemd[1]: Started PgAgent for PostgreSQL 9.6.
（几十秒后……）
[frank@web]$ systemctl status pgagent_96.service
● pgagent_96.service - PgAgent for PostgreSQL 9.6
Loaded: loaded (/usr/lib/systemd/system/pgagent_96.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since 2017-10-16 16:42:56 KST; 4min 9s ago
Process: 9507 ExecStart=/usr/bin/pgagent_96 -s ${LOGFILE} hostaddr=${DBHOST} dbname=${DBNAME} user=${DBUSER} port=${DBPORT} (code=exited, status=0/SUCCESS)
Main PID: 9510 (code=exited, status=1/FAILURE)
16 Oct 16:42:11 web.frank.net systemd[1]: Starting PgAgent for PostgreSQL 9.6...
16 Oct 16:42:11 web.frank.net systemd[1]: Started PgAgent for PostgreSQL 9.6.
16 Oct 16:42:56 web.frank.net systemd[1]: pgagent_96.service: main process exited, code=exited, status=1/FAILURE
16 Oct 16:42:56 web.frank.net systemd[1]: Unit pgagent_96.service entered failed state.
16 Oct 16:42:56 web.frank.net systemd[1]: pgagent_96.service failed.
我检查了 pgagent 日志。（登录 /var/log/pgagent_96.log ）
WARNING: Couldn't create the primary connection (attempt 1): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 2): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 3): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 4): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 5): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 6): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 7): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 8): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 9): fe_sendauth: no password supplied WARNING: Couldn't create the primary connection (attempt 10): fe_sendauth: no password supplied ERROR: Stopping pgAgent: Couldn't establish the primary connection with the database server.检查了我的 .pgpass 文件。（ .pgpass 在 frank 的主目录中。/home/frank ）
[frank@web]$ ls -alZ .pgpass -rw-------. frank frank unconfined_u:object_r:user_home_t:s0 .pgpass [frank@web]$ ls -al .pgpass -rw-------. 1 frank frank 43 16 Oct 16:23 .pgpass [frank@web]$ id -Z unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 [frank@web]$ id uid=1000(frank) gid=1000(frank) groups=1000(frank),10(wheel) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023检查了我的 pg_hba.conf。
[frank@web]$ su - postgres -bash-4.2$ pwd /var/lib/pgsql/9.6/data -bash-4.2$ ls -alZ pg_hba.conf -rw-------. postgres postgres unconfined_u:object_r:postgresql_db_t:s0 pg_hba.conf( pg_hba.conf )
[pg_hba.conf 的内容]
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
#local all all peer
local all all md5
# IPv4 local connections:
#host all all 127.0.0.1/32 ident
host all all 122.32.2.21/32 md5 (122.32.2.21 is my server's IP )
# IPv6 local connections:
#host all all ::1/128 ident
host all all ::1/128 md5
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local replication postgres peer
#host replication postgres 127.0.0.1/32 ident
#host replication postgres ::1/128 ident
我像这样更改了postgres用户的密码。
postgres=# ALTER USER postgres WITH PASSWORD 'pwd';.pgpass 文件的内容。
localhost:5432:postgres:postgres:pwd我将所有者、.pgpass 组从 frank 更改为 postgres。但结果是一样的。我为 OS 用户“root”（/root）、“postgres”（/var/lib/pgsql）和其他两个在 /home 中有主目录的普通用户测试了同样的东西。
(1)尝试以操作系统用户'root'启动
[root@web frank]# ls -al .pgpass
-rw-------. 1 postgres postgres 43 10월 16 17:08 .pgpass
[root@web frank]# ls -alZ .pgpass
-rw-------. postgres postgres unconfined_u:object_r:user_home_t:s0 .pgpass
[root@web frank]# cat .pgpass
localhost:5432:postgres:postgres:pwd
[root@web frank]# systemctl start pgagent_96 (Here, centos asked frank's OS password )
[root@web frank]# systemctl status pgagent_96
● pgagent_96.service - PgAgent for PostgreSQL 9.6
Loaded: loaded (/usr/lib/systemd/system/pgagent_96.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since 2017-10-16 23:33:15 KST; 3s ago
Process: 25928 ExecStart=/usr/bin/pgagent_96 -s ${LOGFILE} hostaddr=${DBHOST} dbname=${DBNAME} user=${DBUSER} port=${DBPORT} (code=exited, status=0/SUCCESS)
Main PID: 25930 (code=exited, status=1/FAILURE)
16 Oct 23:32:30 web.frank.net systemd[1]: Starting PgAgent for Postgre....
16 Oct 23:32:30 web.frank.net systemd[1]: Started PgAgent for PostgreS....
16 Oct 23:33:15 web.frank.net systemd[1]: pgagent_96.service: main pro...E
16 Oct 23:33:15 web.frank.net systemd[1]: Unit pgagent_96.service ente....
16 Oct 23:33:15 web.frank.net systemd[1]: pgagent_96.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
(2) 尝试以操作系统用户 'frank' 的身份启动
[frank@web ~]$ systemctl start pgagent_96 (Here, centos asked frank's OS password )
[frank@web ~]$ systemctl status pgagent_96
● pgagent_96.service - PgAgent for PostgreSQL 9.6
Loaded: loaded (/usr/lib/systemd/system/pgagent_96.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since 월 2017-10-16 23:41:03 KST; 1min 21s ago
Process: 26531 ExecStart=/usr/bin/pgagent_96 -s ${LOGFILE} hostaddr=${DBHOST} dbname=${DBNAME} user=${DBUSER} port=${DBPORT} (code=exited, status=0/SUCCESS)
Main PID: 26533 (code=exited, status=1/FAILURE)
16 Oct 23:40:18 web.frank.net systemd[1]: Starting PgAgent for Postgre....
16 Oct 23:40:18 web.frank.net systemd[1]: Started PgAgent for PostgreS....
16 Oct 23:41:03 web.frank.net systemd[1]: pgagent_96.service: main pro...E
16 Oct 23:41:03 web.frank.net systemd[1]: Unit pgagent_96.service ente....
16 Oct 23:41:03 web.frank.net systemd[1]: pgagent_96.service failed.
Hint: Some lines were ellipsized, use -l to show in full.
(3)尝试以操作系统用户'postgres'启动
-bash-4.2$ systemctl start pgagent_96 (Here, centos asked frank's OS password )
-bash-4.2$ systemctl status pgagent_96
● pgagent_96.service - PgAgent for PostgreSQL 9.6
Loaded: loaded (/usr/lib/systemd/system/pgagent_96.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since 월 2017-10-16 23:54:22 KST; 21s ago
Process: 27511 ExecStart=/usr/bin/pgagent_96 -s ${LOGFILE} hostaddr=${DBHOST} dbname=${DBNAME} user=${DBUSER} port=${DBPORT} (code=exited, status=0/SUCCESS)
Main PID: 27515 (code=exited, status=1/FAILURE)
(4) 'root' 和 'frank' 和 'postgres' 的安全上下文
（ 根 ）
[root@web ~]# id
uid=0(root) gid=0(root) groups=0(root) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
（坦率）
[frank@web ~]$ id
uid=1000(frank) gid=1000(frank) groups=1000(frank),10(wheel) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
（postgres）
-bash-4.2$ id
uid=26(postgres) gid=26(postgres) groups=26(postgres) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
当然，我可以像这样登录数据库。但我不能使用 .pgpass 文件。
[root@web bin]# su - postgres -bash-4.2$ psql -h localhost -U postgres psql (9.6.5) postgres=#目前，我认为这个问题可能与 .pgpass 的安全上下文有关。pgagent_96 或 systemd 可能不允许读取 .pgpass 文件...（只是我的猜测 ^^）我检查了 pgagent_96 或 systemd 是否可以读取 .pgpass。
(1) 我在 /etc/profile [Content of /etc/profile] 中设置 PGPASSFILE 变量
export PGDATA=/var/lib/pgsql/9.6/data
export PGPASSFILE=/var/lib/pgsql/.pgpass
(2) 尝试启动 pgagent_96 将 .pgpass 上下文类型从 user_home_t 更改为 postgresql_db_t、bin_t、usr_t。但我得到了同样的错误。
-bash-4.2$ echo $PGPASSFILE
/var/lib/pgsql/.pgpass
-bash-4.2$ ls -alZ .pgpass
-rw-------. postgres postgres unconfined_u:object_r:postgresql_db_t:s0 .pgpass
-bash-4.2$ systemctl start pgagent_96
====> failed to start pgAgent_96. same error.
-bash-4.2$ chcon --type bin_t .pgpass
-bash-4.2$ ls -alZ .pgpass
-rw-------. postgres postgres unconfined_u:object_r:bin_t:s0 .pgpass
-bash-4.2$ systemctl start pgagent_96
====> failed to start pgAgent_96. same error.
-bash-4.2$ chcon --type usr_t .pgpass
-bash-4.2$ ls -alZ .pgpass
-rw-------. postgres postgres unconfined_u:object_r:usr_t:s0 .pgpass
-bash-4.2$ systemctl start pgagent_96
====> failed to start pgAgent_96. same error.
[pgagent_96、systemd、pg_hba.conf 的安全上下文]
[root@web frank]# ls -alZ /usr/bin/pgagent_96
-rwxr-xr-x. root root system_u:object_r:bin_t:s0 /usr/bin/pgagent_96
[root@web frank]# ls -alZ /usr/lib/systemd/systemd
-rwxr-xr-x. root root system_u:object_r:init_exec_t:s0 /usr/lib/systemd/systemd
[root@web frank]# ls -alZ /var/lib/pgsql/9.6/data/pg_hba.conf
-rw-------. postgres postgres unconfined_u:object_r:postgresql_db_t:s0 /var/lib/pgsql/9.6/data/pg_hba.conf
现在，我不知道我应该尝试什么。请帮帮我...
更新
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