最近在做postgres数据库升级,计划从9.6升级到12，先用docker启动pg12。在启动docker 20的版本中运行正常，但是在docker 18中出了些问题。

1. Error response from daemon: configured logging driver does not support reading

[root@db_slave2 pg12]# docker logs 610bf6961887
Error response from daemon: configured logging driver does not support reading

尝试重启日志服务,但没有仍然报错

[root@db_slave2 data]# systemctl restart systemd-journald
[root@db_slave2 data]# systemctl status systemd-journald

检查docker 配置驱动，发现docker 驱动使用了"log-driver": "gelf"，将日志指向第三方日志采集，于是将docker 启动添加参数 --log-driver ，指定驱动为json-file

即    --log-driver=json-file

2. cannot access '/docker-entrypoint-initdb.d/': Operation not permitted

[root@db_slave2 data]# docker logs 909908659c3b
ls: cannot access '/docker-entrypoint-initdb.d/': Operation not permitted

从报错来看是权限不足，于是参过在docker run时参数 --privileged问题解决

即 

docker run -d  --name postgres12 -v /data/pg12:/var/lib/postgresql/data --log-driver=json-file --privileged postgres:12