Flexlm Software Packages In#

Flexlm Software Packages In

Moreover, since lmgrd is a lightweight process, for sites without system administrators, this is often the simplest (and therefore recommended) way to proceed. It's perfectly OK to have any number of separate license files, with different lmgrd server processes supporting each file. Each license file that has any 'counted' lines (the 'number of licenses' field is >0) requires a server. Do I have to combine them?You don't have to combine license files. Flexgen is not limited to generate licenses of pre-defined software packages in the database.I've received FLEXlm license files from 2 different companies. Smashes the FLEXlm protection scheme from Globetrotter Inc, which is videly used when copy protecting most high-end PCB/CAD/CAM applications, allowing any one to generate a valid FlexLM license.

The FLEXlm date format uses a 4-digit year. It's purely a matter of preference.Does FLEXlm handle dates in the year 2000 and beyond?Yes. Also, if the application is v6+, using 'dir/*.lic' for license file management behaves like combining licenses without physically combining them.When is it recommended to combine license files?Many system administrators, especially for larger sites, prefer to combine license files to ease administration of FLEXlm licenses. This makes combining licenses more attractive than previously.

An older vendor daemon with a newer client will cause communication errors.Please ignore letters appended to FLEXlm versions, i.e., v2.4d. Do I have to worry about how these versions work together?If you're not combining license files from different vendors, the simplest thing to do is make sure you use the tools (especially lmgrd) that are shipped by each vendor.Lmgrd will always correctly support older versions of vendor daemons and applications, so it's always safe to use the latest version of lmgrd and the lmutil utilities.If you've combined license files from 2 vendors, you must use the latest version of lmgrd.If you've received 2 versions of a product from the same vendor, you must use the latest vendor daemon they sent you. FLEXLM VERSIONSI have products from several companies at various FLEXlm version levels. The date 1-jan-00 in a license key indicates that it is a 'non-expiring' license, so it will continue working in the year 2100 and beyond. Will it continue working in the year 2100?Yes. Dates in the year 2000 and beyond must specify all 4 year digits.My license key has a date 1-jan-00.

FLEXlm products always understand older versions therefore, the pre-v3.0 files are understood by every FLEXlm version. Older FLEXlm license files are always valid with newer versions of FLEXlm.I've received a new license file, and the format is different from the old one I had from the same vendor? Why? Are they compatible?As of v3.0, FLEXlm has an optional new format for license files. Is my old license file still valid?Yes. In particular, some elements of FLEXlm didn't require certain patches, so a 2.4 lmgrd will work successfully with a 2.4b vendor daemon.I've received a new copy of a product from a vendor, and it uses a new version of FLEXlm.

If communications are UDP, then the license is freed after the UDP timeout, which is set by each vendor, but defaults to 45 minutes. Assuming communications is TCP, the license is automatically freed immediately. USING FLEXLMIf my client dies, does the server free the license?Yes, unless the client's whole system crashes. See Also: Section 2.2, 'License File Format', on page 10.

Some will simply continue periodically attempting to re-checkout the license when the server comes back up. What happens when the server dies is then up to the application. If the whole system crashes, then the license is not freed, and you should use 'lmremove' to free the license.What happens when the license server dies?FLEXlm applications send periodic heartbeats to the server to discover if it has died.

There is no part of FLEXlm, lmgrd, vendor daemon or application, that requires root permissions. Assuming this is not the case, then use 'telnet host port' - if it says 'can't connect', it's a free port.No. Some GUI applications will present pop-ups to the user periodically letting them know the server is down and needs to be re-started.How do you tell if a port is already in use?99.44% of the time, if it's in use, it's because lmgrd is already running on the port - or was recently killed, and the port isn't freed yet.

A typical checkout request requires 5 messages and responses between client and server, and each message is < 150 bytes.When a server is not receiving requests, it requires virtually no CPU time. If you are starting lmgrd from a boot script, we recommend that you useDoes FLEXlm licensing impose a heavy load on the network?No, but partly this depends on the application, and end-user's use. Therefore, we recommend that lmgrd be run as a non-privileged user (not 'root'). The paths to all the vendor daemons in the license file are listed on each DAEMON line.Is it ok to run lmgrd as 'root' (Unix only)?It is not prudent to run any command, particularly a daemon, as root on Unix, as it may pose a security risk to the Operating System. You will have to ensure that the vendor daemons listed in /path-to-license/license.dat have execute permissions for username. If lmgrd must be started from the root user (for example, in a system boot script), we recommend that you use the 'su' command to run lmgrd as a non-privileged user:Su username -c'/path/lmgrd -c /path/license.dat -l /path/log'Where username is a non-privileged user, and path is the correct paths to lmgrd, license.dat and debug log file.

FLEXlm requires TCP/IP or SPX (Novell Netware). FLEXlm uses an NFS-mounted file like any other application.Does FLEXlm work with ATM, ISDN, Token-Ring, etc.?In general, these have no impact on FLEXlm. FLEXlm has no direct interaction with NFS. In v5, actually improves performance.Yes. Should be, if possible, limited to small license files (say < 50 features).

For example, if the host is locally called 'speedy', and the domain name is 'corp.com', local systems will be able to logon to speedy via 'telnet speedy'. Make sure ALL client nodes, as well as the server node, are able to 'telnet' to that fully-qualified hostname. Make the sure the fully-qualified hostname is the name on the SERVER line of the license file2. 'globes.com'.To ensure success with FLEXlm across domains, do the following:1. A fully-qualified hostname is of the form: node.domain, where node is the local hostname (usually returned by the 'hostname' command or 'uname -n') domain is the internet domain name, e.g. When a license server and a client are located in different domains, fully-qualified host names have to be used.

However, some sites have broken NIS or DNS, which will cause FLEXlm to fail. This requirement goes away in version 3.0 of FLEXlm.If all components (application, lmgrd and vendor daemon) are v6.0 or higher, no aliases are required the only requirement is that the fully-qualified domain name, or ip-address, is used as a hostname on the SERVER, or as a hostname in $LM_LICENSE_FILE or FLEXlm work with NIS and DNS?Yes. This alias is added to the /etc/hosts file, or if NIS/Yellow Pages are being used, then it will have to be added to the NIS database. Finally, there must be an 'alias' for speedy so it's also known locally as speedy.corp.com. Note that this telnet command will always succeed on hosts in other domains (assuming everything is configured correctly), since the network will resolve speedy.corp.com automatically.3.

Vendors are strongly encouraged to use dynamic libraries for libc and networking libraries, since this tends to improve quality in general, as well as making NIS/DNS work. In these situations, the vendor will have to relink, or recompile with v5 FLEXlm. If a vendor links statically, this can cause the application to fail at a site that uses NIS or DNS. Again, if DNS is configured, but the server is not available, FLEXlm will fail.In addition, some systems, particularly Sun, SGI, HP, require that applications be linked dynamically to support NIS or DNS. In particular, sometimes DNS is configured for a server that's not current available (e.g., a dial-up connection from a PC).

Flexlm License Generator