MySQL Bugs: #64789: "unauthenticated user" issue with rpc ypbind in mysql logs

Bug #64789	"unauthenticated user" issue with rpc ypbind in mysql logs
Submitted:	28 Mar 2012 17:51	Modified:	7 Oct 2012 19:28
Reporter:	Vaibhav Narula	Email Updates:
Status:	No Feedback	Impact on me:	None
Category:	MySQL Server	Severity:	S1 (Critical)
Version:	5.1.55-log	OS:	Linux (5,2 & 5.8)
Assigned to:		CPU Architecture:	Any

Description:
Guys is there is a  bug in the mysql  when  your nis timeouts  and  you get  yp_bind timeout errors on mysql  on version 5.1.55-log version or this is a  net timeout issue with nis server  .

do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound

How to repeat:
just happens  when nis/ldap authntication timesout

Thank you for the report.

I see no clnt_call, neither do_ypcall calls in MySQL server sources. Where does this log come from? Is it MySQL error log or some other?

Please also explain in detail your environment: how LDAP authentication related to MySQL server in your installation?

Thanks a lot for responding.I am seeing those errors  in error.log and we are not using any ldap authentication  for mysql but we are using ldap authentication for  but  when this happens we see unauthenticated users in the show processlist  . Let me know if you need any other debug logs

do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Timed out
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound
do_ypcall: clnt_call: RPC: Unable to receive; errno = Connection refused
YPBINDPROC_DOMAIN: Domain not bound

Thank you for the feedback.

Please send us full MySQL error log file.

Errologs

Attachment: error.log (application/octet-stream, text), 481.11 KiB.

Thank you for the feedback.

Please provide your configuration file also: I want to check value of bind-address

[mysql]

#protect the socket file
socket=/tmp/mysql.sock

[mysqld]

## let mysql-proxy have default port
#port=3307
port=3306

#make innodb as the default storage engine
default-storage-engine=innodb

#specify characterset for the database server
character-set-server=utf8

#specify location for the data directory
datadir=/apps/mysql/data

#protect the socket file
socket=/tmp/mysql.sock

#innodb data files
innodb_data_file_path=ibdata1:50M:autoextend

user=mysql

# base installation directory
basedir=/apps/mysql/current

# Slow Query Log to help diagnose DB performance issues
slow_query_log = 1
slow_query_log_file = /apps/logs/mysql/slow-query.log
long_query_time = 10

# Error log location
log-error = /apps/logs/mysql/error.log

# Binary logs -- replication & recovery
#log-bin=/apps/mysql/logs/mysql-bin

# binary logging format - mixed recommended
#binlog_format=mixed

pid-file=/apps/mysql/mysqld.pid

#limit the size of packets sent or received
max_allowed_packet=64M

# query caching settings
query_cache_limit = 16M
query_cache_size = 256M
query_cache_type = 1
max_connections = 600
table_cache=512
thread_cache=64

#forcing lower case characters
lower_case_table_names =1

#Setting innodb bufferpool to 2 GB. If not specified, this defaults to just 8mb.
innodb_buffer_pool_size=1073741824

In host file i have the  following setting and is calling  like this

127.0.0.1       databasehost

Thank you for the feedback.

This reminds me bug #18810

Please check if ypbind, nscd and ldap is up and running. If they do I am afraid this is ypbind error: mysqld calls bind and getaddrinfo only and don't call any of do_ypcall or clnt_call directly.

Sveta,

Thanks a lot the  feedback but its not happening at system startup but starts  happening in middle  of the  time  when there  are calls going to the database and application layer and  then  we see unauthenticated users  .

Regards
Vaibhav

Thank you for the feedback.

Please check with current version 5.1.65 and if problem still exists provide this user-related information from your LDAP configuration, so we can recreate environment similar to yours. Please also specify if this machine works as LDAP server.

No feedback was provided for this bug for over a month, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".