LDOM troubleshooting: Unable to start ldmd (Ldom Daemon). This week I was doing some testing on Ldoms to provide some important information about LDOM’s to our GurkulIndia followers. During initial phases I have met some nice troubleshooting which I would like to share with you all....
We know time is so important in your busy weekdays and Family Weekends, and that’s the reason we made a course that makes you an expert in Red Hat Enterprise Linux 7 , with just 15 minutes each day. Doesn’t matter whether you are commuting to...
Blog for Unix Admin / Solaris Admin / Solaris Networking / Solaris Troubleshooting
by Ramdev · Published April 9, 2022
Here we are going to discuss about basic troubleshooting techniques to resolve the Sendmail issues in solaris..
Solaris Admin / Solaris Booting / Solaris Disk Management / Solaris Tips / VxVM Fundamentals / VxVM Learning
by Ramdev · Published April 8, 2022
During regular maintenance It is often a requirement to us to determine which disk we actually boot from when the root volume is under volume manager control. Solaris on SPARC Sparc with SVM # prtconf -pv|grep bootpath: bootpath: ‘/sbus@3,0/SUNW,fas@3,8800000/sd@1,0:a’ Sparc with VxVM Root Volume...
Solaris Admin / Solaris11 Admin / solaris11-Howto / Unix Intermediate
by Ramdev · Published April 7, 2022
How to Disable a Service Instance Use the following procedure to disable a service. The service status change is recorded in the service configuration repository. Once the service is disabled, the disabled state will persist across reboots. The only way to get the service running again...
Linux Admin / Linux Networking / Redhat Enterprise Linux 6 / RHEL LDAP / Unix Intermediate
by Ramdev · Published April 6, 2022
What is LDAP LDAP ( Lightweight Directory Access Protocol) is client-server protocol which provides directory services to the client machines. Each LDAP server contain the data required to making up the LDAP database, commonly BDB ( Berkely DB), a high performance transactional database. LDAP manages it’s...
For your clients to be able to query the DNS server, you need to open a single port on the firewall, but for both protocols. The DNS clients can use both TCP and UDP port 53.
Below is Sample production environment : 1. Server Infrastructure was located in Two different Data center ( DC ). One DC is for Production Servers and another one for Disaster Recovery( DR) servers 2. System Administrators and Application Developers are sitting in different countries and working remotely....
Blog for Unix Admin / Solaris Admin / Storage Configs for Unixadmin
by Ramdev · Published April 3, 2022
Procedure to expand default partition table using native OS utilities: Note: Because the partition table will be removed and rewritten, the following procedure is appropriate ONLY when the file system on the disk has been created on slice 2 and spans the entire Symmetrix volume. The following...
Linux Admin / Linux Booting / Solaris Booting / Unix Intermediate
by Ramdev · Published April 2, 2022
Booting GRUB from the network The following instructions don’t work for *-emu, i386-qemu,i386-coreboot, i386-multiboot,mips_loongson, mips-arc and mips_qemu_mips to generate a netbootable directory, run: grub2-mknetdir –net-directory=/srv/tftp –subdir=/boot/grub -d /usr/lib/grub/<platform> E.g. for i386-pc: grub2-mknetdir –net-directory=/srv/tftp –subdir=/boot/grub -d /usr/lib/grub/i386-pc Then follow instructions printed out by grub2-mknetdir on...
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