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环境

系统平台：银河麒麟（飞腾）U系 V4,银河麒麟（龙芯）R系 V4
版本：5.6.5

文档用途

md5认证方式升级为scram-sha-256

详细信息

1.确认数据库版本

#要求内核pg10及以上版本[highgo@node1 HighGo5.6.5]$ psql -U highgopsql (5.6.5)PSQL: Release 5.6.5Connected to:HighGo Database V5.6 Enterprise Edition Release 5.6.5 - 64-bit ProductionType "help" for help.highgo=#  SELECT version();version                                                 ----------------------------------------------------------------------------------------------------------PostgreSQL 10.6 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (NeoKylin 4.8.5-16), 64-bit(1 row)

2.查看pg_hba.conf当前认证方式

#TYPE DATABASE USER ADDRESS METHODhost all all 127.0.0.1/32 md5

3.修改password_encryption参数

highgo=# SELECT name,setting,source,enumvals FROM pg_settings WHERE name = 'password_encryption';name         | setting | source  |      enumvals      ---------------------+---------+---------+---------------------password_encryption | md5     | default | {md5,scram-sha-256}(1 row)highgo=# ALTER SYSTEM SET password_encryption TO 'scram-sha-256';ALTER SYSTEMhighgo=#  SELECT pg_reload_conf();pg_reload_conf----------------t(1 row)highgo=# SELECT name,setting,source,enumvals FROM pg_settings WHERE name = 'password_encryption';name         |    setting    |       source       |      enumvals      ---------------------+---------------+--------------------+---------------------password_encryption | scram-sha-256 | configuration file | {md5,scram-sha-256}(1 row)

4.查询需要升级密码的用户

highgo=# SELECT rolname FROM pg_authid WHERE rolcanlogin AND rolpassword !~ '^SCRAM-SHA-256\$';rolname---------highgo(1 row)

5.密码升级

highgo=# \password highgoEnter new password:Enter it again:highgo=#  SELECT rolname FROM pg_authid WHERE rolcanlogin AND rolpassword !~ '^SCRAM-SHA-256\$';rolname---------(0 rows)           #显示为0表示升级成功highgo=# SELECT rolname,rolpassword FROM pg_authid WHERE rolcanlogin;rolname |                                                              rolpassword                                                             ---------+---------------------------------------------------------------------------------------------------------------------------------------highgo  | SCRAM-SHA-256$4096:QiTGFGjtJ75khc8i8vCtAg==$KhSnNCRzTNg3StKNa5UIubJs5qO8VuHDZR7YfD33R5U=:bHoho6Z1kQrCVXMp0iSpuz6d5/VYkeqBvFaOx0kHAHA=(1 row)

6.重新配置pg_hga.conf文件

#TYPE DATABASE USER ADDRESS METHODhost all all 127.0.0.1/32 scram-sha-256