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●バージョン |
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psql (PostgreSQL) 11.19 |
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●ロール一覧 |
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postgres=# \du |
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ロール一覧 |
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ロール名 |
属性
| 所属グループ |
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----------+----------------------------------------------------------------------------+-------------- |
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postgres | スーパーユーザ, ロール作成可, DB作成可,
レプリケーション可, RLS のバイパス | {} |
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postgres=# |
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※postgresロールは、パスワードを「password」に設定 |
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●ipv6設定 |
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ipv6はsysctlで無効化 |
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●ident(authd)の待ち受け |
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[root@centos7-1 ~]# ss
-antup | grep 113 |
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[root@centos7-1 ~]# |
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| ■pg_hba.conf |
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-bash-4.2$ egrep -v
"#|^$" 11/data/pg_hba.conf |
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@ |
local all
all
peer |
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A |
host all
all
127.0.0.1/32
ident |
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B |
host all
all
::1/128
ident |
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C |
local replication all
peer |
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D |
host replication all
127.0.0.1/32
ident |
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E |
host replication all
::1/128
ident |
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F |
host all all
192.168.10.0/24
md5 |
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-bash-4.2$ |
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■接続テスト |
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●TCP/IP経由(localhost) |
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●OSユーザ(postgres) |
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-bash-4.2$ id |
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uid=26(postgres)
gid=26(postgres) groups=26(postgres) |
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-bash-4.2$ psql -h
localhost -U postgres -d postgres |
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psql: FATAL: Ident authentication failed for user
"postgres" |
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-bash-4.2$ |
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⇒pg_hba.confのパターンAにマッチしてident認証不可で突破できず。 |
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●OSユーザ(root) |
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[root@centos7-1 ~]# id |
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uid=0(root) gid=0(root)
groups=0(root) |
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[root@centos7-1 ~]# psql
-h localhost -U postgres -d postgres |
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|
psql: FATAL: Ident authentication failed for user
"postgres" |
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[root@centos7-1 ~]# |
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|
⇒pg_hba.confのパターンAにマッチしてident認証不可で突破できず。 |
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|
●Unixドメインソケット経由(localhost) |
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●OSユーザ(postgres) |
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-bash-4.2$ id |
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uid=26(postgres)
gid=26(postgres) groups=26(postgres) |
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-bash-4.2$ psql -U
postgres -d postgres |
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|
psql (11.19) |
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|
help でヘルプを表示します。 |
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postgres=# \q |
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|
-bash-4.2$ |
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⇒pg_hba.confのパターン@にマッチしてpeer認証で突破。 |
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●OSユーザ(root) |
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[root@centos7-1 ~]# id |
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uid=0(root) gid=0(root)
groups=0(root) |
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[root@centos7-1 ~]# psql
-U postgres -d postgres |
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|
psql: FATAL: Peer authentication failed for user
"postgres" |
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[root@centos7-1 ~]# |
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⇒pg_hba.confのパターン@にマッチしてpeer認証で突破できず。 |
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| ■pg_hba.conf |
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|
-bash-4.2$ egrep -v
"#|^$" 11/data/pg_hba.conf |
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@ |
local all
all
md5 |
|
|
★md5に変更した |
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A |
host all
all
127.0.0.1/32
md5 |
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★md5に変更した |
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B |
host all
all
::1/128
ident |
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C |
local replication all
peer |
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D |
host replication all
127.0.0.1/32
ident |
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E |
host replication all
::1/128
ident |
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F |
host all all
192.168.10.0/24
md5 |
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-bash-4.2$ |
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■接続テスト($HOME/.pgpassなし) |
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●TCP/IP経由(localhost) |
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●OSユーザ(postgres) |
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-bash-4.2$ id |
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uid=26(postgres)
gid=26(postgres) groups=26(postgres) |
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-bash-4.2$ psql -h
localhost -U postgres -d postgres |
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ユーザ postgres のパスワード: |
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psql (11.19) |
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help でヘルプを表示します。 |
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postgres=# \q |
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-bash-4.2$ |
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⇒pg_hba.confのパターンAにマッチしてパスワード認証(md5)。パスワード入力して突破。 |
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●OSユーザ(root) |
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[root@centos7-1 ~]# id |
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uid=0(root) gid=0(root)
groups=0(root) |
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[root@centos7-1 ~]# psql
-h localhost -U postgres -d postgres |
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ユーザ postgres のパスワード: |
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psql (11.19) |
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help でヘルプを表示します。 |
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postgres=# \q |
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[root@centos7-1 ~]# |
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⇒pg_hba.confのパターンAにマッチしてパスワード認証(md5)。パスワード入力して突破。 |
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●Unixドメインソケット経由(localhost) |
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●OSユーザ(postgres) |
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-bash-4.2$ id |
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uid=26(postgres)
gid=26(postgres) groups=26(postgres) |
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-bash-4.2$ psql -U
postgres -d postgres |
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ユーザ postgres のパスワード: |
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psql (11.19) |
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help でヘルプを表示します。 |
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postgres=# \q |
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-bash-4.2$ |
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⇒pg_hba.confのパターン@にマッチしてパスワード認証(md5)。パスワード入力して突破。 |
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●OSユーザ(root) |
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[root@centos7-1 ~]# id |
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uid=0(root) gid=0(root)
groups=0(root) |
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[root@centos7-1 ~]# psql
-U postgres -d postgres |
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ユーザ postgres のパスワード: |
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psql (11.19) |
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help でヘルプを表示します。 |
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postgres=# \q |
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[root@centos7-1 ~]# |
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⇒pg_hba.confのパターン@にマッチしてパスワード認証(md5)。パスワード入力して突破。 |
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■接続テスト($HOME/.pgpassあり) |
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●TCP/IP経由(localhost) |
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●OSユーザ(postgres) .pgpassは「localhost:5432:*:postgres:password」 |
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-bash-4.2$ id |
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[root@centos7-1 ~]# lsof
| grep 5432 |
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uid=26(postgres)
gid=26(postgres) groups=26(postgres) |
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postmaste 29682
postgres
6u unix
0xffff8ee976b41980 0t0 311925
/var/run/postgresql/.s.PGSQL.5432 |
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-bash-4.2$ psql -h
localhost -U postgres -d postgres |
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postmaste 29682
postgres
7u unix
0xffff8ee976b43740 0t0 311927
/tmp/.s.PGSQL.5432 |
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psql (11.19) |
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[root@centos7-1 ~]# |
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help でヘルプを表示します。 |
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[root@centos7-1 ~]# ss
-antup | grep 5432 | grep ESTAB |
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postgres=# \q |
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tcp ESTAB 0 0
127.0.0.1:5432
127.0.0.1:45994
users:(("postmaster",pid=29954,fd=12)) |
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-bash-4.2$ |
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tcp ESTAB 0 0
127.0.0.1:45994
127.0.0.1:5432
users:(("psql",pid=29953,fd=3)) |
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|
⇒pg_hba.confのパターンAにマッチしてパスワード認証(md5)。パスワード入力なしで突破。 |
|
[root@centos7-1 ~]# |
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|
lsof では2つから増えていなく、ssではpsqlのコネクションが確認できるので、TCP/IP経由。 |
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●OSユーザ(root) .pgpassは「localhost:5432:*:postgres:password」 |
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[root@centos7-1 ~]# id |
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[root@centos7-1 ~]# lsof
| grep 5432 |
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uid=0(root) gid=0(root)
groups=0(root) |
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postmaste 29682
postgres
6u unix
0xffff8ee976b41980 0t0 311925
/var/run/postgresql/.s.PGSQL.5432 |
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[root@centos7-1 ~]# psql
-h localhost -U postgres -d postgres |
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postmaste 29682
postgres
7u unix
0xffff8ee976b43740 0t0 311927
/tmp/.s.PGSQL.5432 |
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psql (11.19) |
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[root@centos7-1 ~]# |
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help でヘルプを表示します。 |
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[root@centos7-1 ~]# ss
-antup | grep 5432 | grep ESTAB |
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postgres=# \q |
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tcp ESTAB 0 0
127.0.0.1:5432
127.0.0.1:45998
users:(("postmaster",pid=30005,fd=12)) |
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[root@centos7-1 ~]# |
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tcp ESTAB 0 0
127.0.0.1:45998
127.0.0.1:5432
users:(("psql",pid=30004,fd=3)) |
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⇒pg_hba.confのパターンAにマッチしてパスワード認証(md5)。パスワード入力なしで突破。 |
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[root@centos7-1 ~]# |
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lsof では2つから増えていなく、ssではpsqlのコネクションが確認できるので、TCP/IP経由。 |
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●Unixドメインソケット経由(localhost) |
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●OSユーザ(postgres) .pgpassは「localhost:5432:*:postgres:password」 |
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-bash-4.2$ id |
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[root@centos7-1 ~]# lsof
| grep 5432 |
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uid=26(postgres)
gid=26(postgres) groups=26(postgres) |
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postmaste 29682
postgres
6u unix
0xffff8ee976b41980 0t0 311925
/var/run/postgresql/.s.PGSQL.5432 |
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-bash-4.2$ psql -U
postgres -d postgres |
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postmaste 29682
postgres
7u unix
0xffff8ee976b43740 0t0 311927
/tmp/.s.PGSQL.5432 |
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psql (11.19) |
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postmaste 30053
postgres 12u unix
0xffff8ee9365b7740 0t0 315824
/var/run/postgresql/.s.PGSQL.5432 |
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help でヘルプを表示します。 |
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[root@centos7-1 ~]# |
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postgres=# \q |
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[root@centos7-1 ~]# ss
-antup | grep 5432 | grep ESTAB |
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-bash-4.2$ |
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[root@centos7-1 ~]# |
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⇒pg_hba.confのパターン@にマッチしてパスワード認証(md5)。パスワード入力なしで突破。 |
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lsof では2つから増えて3つ、ssではコネクションが確立されていないので、Unixドメインソケット経由。 |
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●OSユーザ(root) .pgpassは「localhost:5432:*:postgres:password」 |
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[root@centos7-1 ~]# id |
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[root@centos7-1 ~]# lsof
| grep 5432 |
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|
uid=0(root) gid=0(root)
groups=0(root) |
|
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|
|
|
postmaste 29682
postgres
6u unix
0xffff8ee976b41980 0t0 311925
/var/run/postgresql/.s.PGSQL.5432 |
|
|
|
|
[root@centos7-1 ~]# psql
-U postgres -d postgres |
|
|
|
|
|
|
|
postmaste 29682
postgres
7u unix
0xffff8ee976b43740 0t0 311927
/tmp/.s.PGSQL.5432 |
|
|
|
|
|
|
|
psql (11.19) |
|
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|
|
postmaste 30111
postgres 12u unix
0xffff8ee9365b5dc0 0t0 316918
/var/run/postgresql/.s.PGSQL.5432 |
|
|
|
|
help でヘルプを表示します。 |
|
|
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|
|
|
|
|
|
[root@centos7-1 ~]# |
|
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postgres=# \q |
|
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|
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|
|
|
[root@centos7-1 ~]# ss
-antup | grep 5432 | grep ESTAB |
|
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|
|
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|
|
|
[root@centos7-1 ~]# |
|
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|
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|
|
[root@centos7-1 ~]# |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
⇒pg_hba.confのパターン@にマッチしてパスワード認証(md5)。パスワード入力なしで突破。 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
lsof では2つから増えて3つ、ssではコネクションが確立されていないので、Unixドメインソケット経由。 |
|
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