Upgrade GLIBC Rhel/CentoOs

To upgrade glibc below package are reuqired.

glibc glibc-common glibc-devel glibc-headers glibc-static glibc-utils Download the above packages from below link, and copy in /tmp directoyr. Download Package From here

Make sure all above package should be in same version.

go to the /tmp directory and execute below command to update the packages. rpm -Uvh glibc-2.17-55.el6.x86_64.rpm \ glibc-common-2.17-55.el6.x86_64.rpm \ glibc-devel-2.17-55.el6.x86_64.rpm \ glibc-headers-2.17-55.el6.x86_64.rpm \ glibc-static-2.17-55.el6.x86_64.rpm \ glibc-utils-2.17-55.el6.x86_64.rpm Check the lattest install version. rpm -qa |grep glibc

Mount FTP share locally in Linux using ftpfs

Mount FTP share locally in Linux using ftpfs

 To mount a remote FTP account to locally on Linux system- 

1)Install required Packages

2)Mounting system with remote details

3)Testing

1) - Install fuse-curlftpfs package on you Linux system.

2)- After package installation need to create a mount point(directory) and mount ftp server data using curlftpfs command, to do this you must have ftp details. 

Consider below details.
 
 ftp User: altmish
 ftp Password: tech2smooth
 ftp Host:- ftp.tech2smooth.in
 Mount Directory:-  /usr/ftp_data

Create the mount point and mount ftp account data.
[root@localhost /]#mkdir /usr/ftp_data
[root@localhost /]#curlftpfs -o altmish:tech2smooth@ftp.tech2smooth.in /usr/ftp_data

Note: Above mounted data will be accessible only for the user who mounted the system. To make it public-ally accessible use below.


[root@localhost /]#curlftpfs -o allow_other altmish:tech2smooth@ftp.tech2smooth.in /usr/ftp_data

 3)- Go to ftp data directory

[root@localhost /]#cd /usr/ftp_data

[root@localhost /]#ls -ltrh

Memory Leak in tomcat

To prevent this particular memory leak you should edit your tomcat/conf/server.xml and change

<Listener  lassName="org.apache.catalina.core.JreMemoryLeakPreventionListener" />

to

<Listener 
className="org.apache.catalina.core.JreMemoryLeakPreventionListener"
classesToInitialize="com.mysql.jdbc.NonRegisteringDriver" />

Error parsing HTTP request header- Invalid character found in the request target.

Http11Processor.service Error parsing HTTP request header
 Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.
 java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986

Solution

Edit catalina.properties add below line in end of the file.

tomcat.util.http.parser.HttpParser.requestTargetAllow=|{}

 

 

Unable to Start MySQL Linux - Please read "Security" section of the manual....

ISSUE- [ERROR] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root


Solution- Start mysql using below command.

/usr/sbin/mysqld --user=root --daemonize --pid-file=/var/run/mysqld/mysqld.pid