# Failed to enable RocksDB, and err log shows nothing

**URL:** <https://forums.percona.com/t/failed-to-enable-rocksdb-and-err-log-shows-nothing/7028>\
**Category:** Percona Server for MySQL 5.7\
**Created:** [May 22, 2019, 4:23pm UTC](https://forums.percona.com/t/failed-to-enable-rocksdb-and-err-log-shows-nothing/7028 "2019-05-22T16:23:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![geminijun](https://avatars.discourse-cdn.com/v4/letter/g/47e85d/32.png) [@geminijun](https://forums.percona.com/u/geminijun)\
**Post date:** [May 22, 2019, 4:23pm UTC](https://forums.percona.com/t/failed-to-enable-rocksdb-and-err-log-shows-nothing/7028/1 "2019-05-22T16:23:32Z")

</div>

I build Percona-server from scratch, started mysql by:

/bin/mysqld --defaults-file=my.cnf --user=root &

But when I tried t enable RocksDB by:

./bin/ps-admin --enable-rocksdb -u root -p -S mysql.sock

I got following error messages:

hecking if RocksDB plugin is available for installation …  
INFO: ha\_rocksdb.so library for RocksDB found at /memverge/home/jungan/percona-server/install/usr/local/mysql/lib/mysql/plugin/ha\_rocksdb.so.

Checking RocksDB engine plugin status…  
INFO: RocksDB engine plugin is not installed.

Installing RocksDB engine…  
ERROR: Failed to install RocksDB engine plugin. Please check error log.

And I checked mysql err log there is nothing, I had set log\_error\_verbosity to 3 and I can see other logs. Just no reason for this one.

Here is my.cnf:

[mysqld]  
datadir=/build/mysql\_data/  
socket=/build/mysql.sock  
plugin-dir=/build/user/local/mysql/lib/mysql/plugin

log\_error\_verbosity = 3

server-id=master-01  
log-bin=mysqld-bin  
binlog\_format=ROW

[mysqld\_safe]  
log-error=/build/mysql\_log/mysqld.log  
pid-file=/build/mysqld.pid

Any one know how to fix it? Thanks a lot!!!