McIDAS-XCD Administrator's Guide
[Table of Contents]
McIDAS-XCD 2021.1 for the First Time
If you are installing
McIDAS-XCD on a workstation that already has a previous version of McIDAS-XCD
installed, go to the previous section, Upgrading
to McIDAS-XCD 2021.1.
for the first time on a workstation consists of the three tasks in this section
(Adding the mcdata Group and Disabling Binary Logging,
Assigning Directory Permissions,
Loading the McIDAS-XCD Software),
followed by additional configuration steps in the section
Before proceeding with the instructions below, verify that McIDAS-X 2021.1 has been
installed on the workstation. If it hasn't you must do so before you
install McIDAS-XCD 2021.1.
Adding the mcdata Group and Disabling Binary Logging
The workstation running the McIDAS-XCD software must have the group name
mcdata which contains the users oper and
mcidas. It also should disable the writing of binary log files
associated with the database. This is needed because MySQL/MariaDB 8.0 and later enable binary
logging by default, which fills large amounts of disk (possibly an entire file system) due to
it logging millions of INSERT into file_list entries per day. Use this procedure to
add the mcdata group, if needed, and disable binary logging.
- Log on to the root account.
- Add the following line to the /etc/group file.
Replace groupid with a unique group ID number.
For example: mcdata::23000:oper,mcidas
- Disable the writing of binary log files associated with the database.
Type: /home/oper/mcidas/bin/gribadmin disablelog
When the command is finished, you should see a message like that below.
/etc/my.cnf.d/disable-log-bin.cnf successfully written!
- Log out of the root account.
Assigning Directory Permissions
Use the steps below to assign write privileges to the directory
- Log on to the workstation as user mcidas and
change the group for the ~mcidas/data directory to the group
Type: chgrp mcdata ~mcidas/data
- Change the permissions for the directory ~mcidas/data
so only the user mcidas and members of the group mcdata
have write permission.
Type: chmod 775 ~mcidas/data
- Log out of the mcidas account.
Loading the McIDAS-XCD Software
Complete the steps below to load the McIDAS-XCD software.
- Logon to the workstation as user oper and
change to the ~oper/mcidas directory.
- Verify that the PATH environment variable contains the
~mcidas/bin and ~oper/mcidas/bin directories,
and the operating system-specific modifications listed for the mcidas account
in the McIDAS User's Guide.
- Verify that the ~oper/mcidas/data directory
exists (use command mkdir ~oper/mcidas/data to
make it if it doesn't) and that the MCPATH environment
variable is set and includes the ~oper/mcidas/data,
and ~mcidas/help directories.
- Build and install McIDAS-XCD 2021.1 using the same settings for
optional flags -noopt and -mysql as were used to build
McIDAS-X 2021.1. You must use the same compilers and optional flag settings for both the McIDAS-X and
Type: sh ./xcd2021.1.sh flags install all
where flags is
zero, one or both of the two optional flags described below.
- The -noopt flag is
used to build McIDAS-XCD with no optimization. If you don't specify this -noopt flag,
McIDAS-XCD is built using the default optimization: -O2 for builds with
vendor compilers and -O1 for builds with gcc/g77.
- The -mysql flag is
used to build McIDAS-XCD using the MySQL/MariaDB database libraries. Use this
flag if this workstation will be serving real-time GRIB files from the
NOAAPORT data stream and you have installed and want to use a MySQL/MariaDB database
to make the GRIB data access faster for your McIDAS-X clients/users.
If the database is in a non-standard install location, specify the flag
where directory is
the root MySQL/MariaDB install directory. Remember, the -mysql flag
must be specified when building both McIDAS-X and McIDAS-XCD.
This script performs the following steps:
- creates the subdirectories xcd2021.1,
xcd2021.1/src, and xcd2021.1/data in the
- uncompresses the file xcd2021.1.tar.Z
- compiles the source code and copies the binaries to the directory
~oper/mcidas/bin; approximately 130 modules are compiled, so this step
takes a few minutes to complete; your compiler may generate some warnings while the macro commands
- copies data files to the ~oper/mcidas/data and
- copies the help files to the ~oper/mcidas/help directory
When the script is finished, you will see the message below.
McIDAS-XCD package installation is now complete
- Switch to user mcidas so you can install the McIDAS-XCD ADDE servers.
- Run the script below to install the new ADDE server executable code in the
Type: sh ./xcd2021.1.sh install addeservers
- Exit from user mcidas.
You should now be logged on as user oper.
- Start a McIDAS-X session.
- Determine the full Unix path of the directory in which you want -XCD to
write data. The location where you store data is up to you; be sure to take disk space
needs into account when making your decision. The data directory needs to exist,
and also needs to contain grib and bufr subdirectories. Once you've determined
the path of your data directory, create a McIDAS string named MCDATA that
contains the full Unix path to the directory. From the McIDAS-X session,
Type: TE MCDATA "/data_directory_path
TE MCDATA "/home/oper/xcd_data
In order for -XCD to correctly file data in this example, the /home/oper/xcd_data,
/home/oper/xcd_data/grib, and /home/oper/xcd_data/bufr
directories need to exist. Create the #MCDATA, #MCDATA/grib,
and #MCDATA/bufr directories, if necessary.
- Run the batch file XCD.BAT to
redirect to data files in #MCDATA and to initialize
the files GROUPS.DAT and COUNTRY.DAT.
- Run the batch file XCDDEC.BAT to register MD file
schemas, create rapid access pointer files, and initialize several data files.
Proceed to the next section,
and complete the configuration instructions for each section.
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