MySQL: Difference between revisions
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= | This page contains some notes on using the MySQL database server on a '''NST''' probe. | ||
<noinclude>[[Category:Database]]</noinclude> | |||
== Listing The Databases == | |||
The following script fragment demonstrates how one can list all of the databases currently available on a '''NST''' probe: | |||
<pre class="programListing"> | |||
#!/bin/bash | |||
# mysql_list | |||
# | |||
# Lists all of the MySQL databases which currently exist. | |||
mysql_list() { | |||
# Try to load MySQL access password from /etc/nst.conf | |||
[ -z "${NSTCTMYSQLPASSWD}" ] && [ -f /etc/nst.conf ] && . /etc/nst.conf; | |||
local PASSWD="--password${NSTCTMYSQLPASSWD+=}${NSTCTMYSQLPASSWD}"; | |||
# Dump all databases | |||
echo "show databases;" | mysql \ | |||
--host="127.0.0.1" \ | |||
--user="root" \ | |||
"${PASSWD}" | grep -v '^Database$'; | |||
} | |||
# Dump all databases | |||
mysql_list; | |||
</pre> | |||
Assuming one saved the above example script to the file: "'''/root/bin/listdb'''" one should be able to list all of the MySQL databases in the following manner: | |||
<div class="screen"> | |||
<div class="screenTitle">''Script:'' "listdb" Usage</div> | |||
<div class="userInput"><span class="prompt">[root@taco ~]# </span>/root/bin/listdb</div> | |||
<pre class="computerOutput"> | |||
fruity | |||
geoinfo | |||
inprotect | |||
mysql | |||
snort | |||
snort_archive | |||
test | |||
</pre><div class="userInput"><span class="prompt">[root@taco ~]# </span></div> | |||
</div> | |||
== Backing Up and Restoring A Database == | |||
NOTE: The following code fragments need to be run from the '''root''' user account so that the MySQL password can be read from the file: "'''/etc/nst.conf'''". | |||
The following script fragment demonstrates how one can backup a single database kept at the server: | The following script fragment demonstrates how one can backup a single database kept at the server: | ||
<pre> | <pre class="programListing"> | ||
#!/bin/bash | #!/bin/bash | ||
Line 21: | Line 66: | ||
local PKGSAVEFILE="${PKGSAVEDIR}/${PKGDB}.sql.gz"; | local PKGSAVEFILE="${PKGSAVEDIR}/${PKGDB}.sql.gz"; | ||
# | # Try to load MySQL access password from /etc/nst.conf | ||
[ -z "${NSTCTMYSQLPASSWD}" ] && [ -f /etc/nst.conf ] && . /etc/nst.conf; | |||
local PASSWD="--password${NSTCTMYSQLPASSWD+=}${NSTCTMYSQLPASSWD}"; | |||
# Create save directory if it doesn't exist yet | # Create save directory if it doesn't exist yet | ||
Line 33: | Line 77: | ||
--host="127.0.0.1" \ | --host="127.0.0.1" \ | ||
--user="root" \ | --user="root" \ | ||
"${PASSWD}" \ | |||
--add-drop-database \ | --add-drop-database \ | ||
--add-drop-table \ | --add-drop-table \ | ||
Line 40: | Line 84: | ||
} | } | ||
# Backup database named " | # Backup database named "fruity" unless user specified different name on command line | ||
mysql_backup "${1:- | mysql_backup "${1:-fruity}" "/var/nst/backup/db"; | ||
</pre> | </pre> | ||
The following script fragment demonstrates how to restore the database (WARNING: THIS REPLACES ANY EXISTING DATABASE HAVING THE SAME NAME): | The following script fragment demonstrates how to restore the database (WARNING: THIS REPLACES ANY EXISTING DATABASE HAVING THE SAME NAME): | ||
<pre> | <pre class="programListing"> | ||
#!/bin/bash | #!/bin/bash | ||
Line 65: | Line 108: | ||
[ -f "${PKGSAVEFILE}" ] || return 1; | [ -f "${PKGSAVEFILE}" ] || return 1; | ||
# | # Try to load MySQL access password from /etc/nst.conf | ||
[ -z "${NSTCTMYSQLPASSWD}" ] && [ -f /etc/nst.conf ] && . /etc/nst.conf; | |||
local PASSWD="--password${NSTCTMYSQLPASSWD+=}${NSTCTMYSQLPASSWD}"; | |||
# Restore the database | # Restore the database | ||
Line 75: | Line 117: | ||
--host="127.0.0.1" \ | --host="127.0.0.1" \ | ||
--user="root" \ | --user="root" \ | ||
"${PASSWD}"; | |||
} | } | ||
# Restore database named " | # Restore database named "fruity" unless user specified different name on command line | ||
mysql_restore "${1:- | mysql_restore "${1:-fruity}" "/var/nst/backup/db"; | ||
</pre> | |||
Assuming saved the backup script to the file: "'''/root/bin/backupdb'''" and the restore script shown above to the file: "'''/root/bin/restoredb'''", the following command line demonstrates how one could backup and then restore the '''snort''' database. | |||
<div class="screen"> | |||
<div class="screenTitle">''Script:'' "backupdb" & "restoredb" Usage</div> | |||
<div class="userInput"><span class="prompt">[root@taco ~]# </span>/root/bin/backupdb snort</div> | |||
<div class="userInput"><span class="prompt">[root@taco ~]# </span></div> | |||
<div class="userInput"><span class="prompt">[root@taco ~]# </span>ls -l /var/nst/backup/db</div> | |||
<pre class="computerOutput"> | |||
total 8 | |||
-rw-r--r-- 1 root root 5407 Feb 28 07:23 snort.sql.gz | |||
</pre> | </pre> | ||
<div class="userInput"><span class="prompt">[root@taco ~]# </span>ls -l /var/nst/backup/db</div> | |||
<div class="userInput"><span class="prompt">[root@taco ~]# </span></div> | |||
</div> |
Latest revision as of 07:17, 4 March 2007
This page contains some notes on using the MySQL database server on a NST probe.
Listing The Databases
The following script fragment demonstrates how one can list all of the databases currently available on a NST probe:
#!/bin/bash # mysql_list # # Lists all of the MySQL databases which currently exist. mysql_list() { # Try to load MySQL access password from /etc/nst.conf [ -z "${NSTCTMYSQLPASSWD}" ] && [ -f /etc/nst.conf ] && . /etc/nst.conf; local PASSWD="--password${NSTCTMYSQLPASSWD+=}${NSTCTMYSQLPASSWD}"; # Dump all databases echo "show databases;" | mysql \ --host="127.0.0.1" \ --user="root" \ "${PASSWD}" | grep -v '^Database$'; } # Dump all databases mysql_list;
Assuming one saved the above example script to the file: "/root/bin/listdb" one should be able to list all of the MySQL databases in the following manner:
fruity geoinfo inprotect mysql snort snort_archive test
Backing Up and Restoring A Database
NOTE: The following code fragments need to be run from the root user account so that the MySQL password can be read from the file: "/etc/nst.conf".
The following script fragment demonstrates how one can backup a single database kept at the server:
#!/bin/bash # mysql_backup DBNAME BACKUPDIR # # Function to backup MySQL database to specified backup directory. mysql_backup() { # Name of database and directory to save backup under. local PKGDB="${1}"; local PKGSAVEDIR="${2}"; local PKGSAVEFILE="${PKGSAVEDIR}/${PKGDB}.sql.gz"; # Try to load MySQL access password from /etc/nst.conf [ -z "${NSTCTMYSQLPASSWD}" ] && [ -f /etc/nst.conf ] && . /etc/nst.conf; local PASSWD="--password${NSTCTMYSQLPASSWD+=}${NSTCTMYSQLPASSWD}"; # Create save directory if it doesn't exist yet [ -d "${PKGSAVEDIR}" ] || mkdir -p "${PKGSAVEDIR}" || return 1; # Dump the database mysqldump \ --host="127.0.0.1" \ --user="root" \ "${PASSWD}" \ --add-drop-database \ --add-drop-table \ --databases "${PKGDB}" \ | gzip -c >| "${PKGSAVEFILE}"; } # Backup database named "fruity" unless user specified different name on command line mysql_backup "${1:-fruity}" "/var/nst/backup/db";
The following script fragment demonstrates how to restore the database (WARNING: THIS REPLACES ANY EXISTING DATABASE HAVING THE SAME NAME):
#!/bin/bash # mysql_restore DBNAME BACKUPDIR # # Restores a MySQL database that was previously saved using the "mysql_backup" function. mysql_restore() { # Name of database and directory where backup was saved local PKGDB="${1}"; local PKGSAVEDIR="${2}"; local PKGSAVEFILE="${PKGSAVEDIR}/${PKGDB}.sql.gz"; # Verify backup exists [ -f "${PKGSAVEFILE}" ] || return 1; # Try to load MySQL access password from /etc/nst.conf [ -z "${NSTCTMYSQLPASSWD}" ] && [ -f /etc/nst.conf ] && . /etc/nst.conf; local PASSWD="--password${NSTCTMYSQLPASSWD+=}${NSTCTMYSQLPASSWD}"; # Restore the database gzip -dc < "${PKGSAVEFILE}" | \ mysql \ --host="127.0.0.1" \ --user="root" \ "${PASSWD}"; } # Restore database named "fruity" unless user specified different name on command line mysql_restore "${1:-fruity}" "/var/nst/backup/db";
Assuming saved the backup script to the file: "/root/bin/backupdb" and the restore script shown above to the file: "/root/bin/restoredb", the following command line demonstrates how one could backup and then restore the snort database.
total 8 -rw-r--r-- 1 root root 5407 Feb 28 07:23 snort.sql.gz