Why and How to add new DNS client in Solaris?

Why ?

A basic needed is to resolve the naming service with IP using your company DNS Server, below I am sharing the Oracle official we that I follow to add and check the service of the DNS client.

How ?

Please follow the below to achieve this ,:

1- Oracle documentation for Solaris 11.4:

https://docs.oracle.com/cd/E37838_01/html/E60988/gnlbt.html

## Example :

## configure the DNS

$ svccfg -s network/dns/client

svc:/network/dns/client> setprop config/search = astring: ("nameserver")

svc:/network/dns/client> setprop config/nameserver = net_address: (10.1.1.100)

svc:/network/dns/client> select network/dns/client:default

svc:/network/dns/client:default> refresh

svc:/network/dns/client:default> validate

svc:/network/dns/client:default> select name-service/switch

svc:/system/name-service/switch> setprop config/host = astring: "files dns"

svc:/system/name-service/switch> select system/name-service/switch:default

svc:/system/name-service/switch:default> refresh

svc:/system/name-service/switch:default> validate

svc:/system/name-service/switch:default> quit

2- Check the status of the service :

 https://docs.oracle.com/cd/E19120-01/open.solaris/819-2379/ecdne/index.html

## Check DNS status

$ svcadm enable dns/client

$ svcadm enable name-service/switch

## Do any use nslookup

nslookup google.com

Why and How to manage disk space quota in Solaris 11?

  Why ?

In Solaris you will have a disk and after that the sub disk will be assigned for a value of space to make sure that total space in disk divided on these sub directories and each take the assigned space from disk only , for example if you 100G and you need to make sure /u01 is only 20G and /u02 takes 80G , set a quota is the soft way , reservation and refquota will do this as well with different properties of each , here I will show only how to do quota.

How ?

Below are simple commands for getting and setting the quota

1- list the disks and it is detail:

zpool list

2- get a list of all list of create directory in the disk as mount point:

df –h

zfs list

3- To get/set specific path quota if any :

# zfs set quota=10G tank/home/jeff

# zfs get quota tank/home/jeff

 

My reference always is : https://docs.oracle.com/cd/E23824_01/html/821-1448/gazvb.html

Why and How to manage Sun Cluster resources running for Oracle Database

  Why ?

To do activity for Oracle database like patching , upgrade or switchover/failover ..etc and this sever is running on Sun cluster HA services , you have to do disable/enable and monitor/unmonitored for certain services configured in your cluster resources and group.

How ?

Below are most important commands you may need to use in Sun Cluster management  :

1- Checking Cluster group status:

clrg status

=== Cluster Resource Groups ===

Group Name      Node Name        Suspended      Status

----------      ---------        ---------      ------

Group_res       Server1         No             Online

                Server2         No             Offline

 

2- Check Cluster resources details of the group :

clrs status

=== Cluster Resources ===

Resource Name      Node Name        State       Status Message

-------------      ---------        -----       --------------

DB-srv            Server1           Online      Online

                   Server2           Offline     Offline

 

DB-lsnr            Server1           Online      Online

                   Server2           Offline     Offline

 

Ip_HA             server1            Online      Online - LogicalHostname online.

                  server2            Offline     Offline

 

DB_zfs-rs        server1            Online      Online

3- Stop/shutdown certain recourse

clrs disable DB-srv

clrs enable DB-srv

4- Disable the cluster management for certain resource

clrs unmonitor DB-srv

clrs monitor DB-srv

5- Show configured things in resource :

clrs show -v DB-srv

6- Switchover to server2

clrg switch -n server2 Group_res

A good reference you may refer to is :

https://docs.oracle.com/cd/E19787-01/820-7359/x-4805j/index.html