The following libraries and files are automatically created under the TSOS user ID, where nnn specifies the version (211 stands for SOCKETS V21.1A):
SYSDAT.SOCKETS.nnn.RESOLV.CONF | Configuration file for the program GETDNS |
SYSDAT.SOCKETS.nnn.ANCHORS.P7S | System file, necessary for using DNSSEC |
SYSDAT.SOCKETS.nnn.ANCHORS.XML | System file, necessary for using DNSSEC |
SYSPRG.SOCKETS.nnn | Load library for the program GETDNS |
SYSPRG.SOCKETS.nnn.TOOLS | Load library for the programs DIG and NSLOOKUP |
SYSENT.GETDNS.nnn | Enter file for GETDNS (created after first start) |
SYSSDF.SOCKETS.nnn | SDF syntax file GETDNS |
SYSSPR.SOCKETS.nnn | Library of GETDNS procedures |
To prevent the resolver configuration data from being overwritten when a product update is performed, the file SYSDAT.SOCKETS.nnn.RESOLV.CONF with the suffix .NEW is created in the case of an IMON installation if a file with the name SYSDAT.SOCKETS.nnn.RESOLV.CONF is already present.
The IMON installation creates the DNS Resolver configuration file with the file attributes USER-ACC = *ALL-USERS and ACCESS = *READ. To protect these files more efficiently against modification, you can also assign them a write password.
- The diagnostic program DIG can be used to read out entries on the selected DNS server. This enables you both to check the entered records and to determine whether or not a processor is known in DNS. DIG can be used to check DNS server entries independently of whether or not GETDNS is started.
- The diagnostic program NSLOOKUP enables DNS processor names to be converted to IP/IPv6 addresses and vice versa. Naturally a check then also takes place to determine whether the processor name is known in DNS.
- The diagnostic programs PING4/PING6 are used primarily to check whether a processor can be addressed. If a processor name is specified instead of an IP/IPv6 address, the entry is checked indirectly in DNS as a result of the necessary conversion of the name to an address.
By default GETDNS is started under TSOS and directly when the DCSTART command is executed. At every automatic startup GETDNS uses the standard configuration file.