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| Section | Objectives |
|---|---|
| Topic 1: Automating Standard Tasks | - Automate scheduled tasks and service configuration - Automate firewall, storage, file systems and security tasks |
| Topic 2: Advanced Automation | - Apply error handling and conditionals in automation - Use Ansible Vault in playbooks |
| Topic 3: Core Ansible Automation | - Understand and use core components of Ansible - Configure Ansible managed nodes and inventories |
| Topic 4: System Administration Fundamentals | - Perform all RHCSA core tasks expected of a system administrator - Manage users, groups, security and services across systems |
| Topic 5: Playbooks and Roles | - Create and work with roles and content collections - Write and execute Ansible playbooks |
CORRECT TEXT
Please open the ip_forward, and take effect permanently.
Correct Answer:
vim/etc/sysctl.confnet.ipv4.ip_forward=1
sysctl-w(takeseffectimmediately)Ifno"sysctl.conf"optionusethesecommands:
sysctl-a|grepnet.ipv4
sysctl-Pnet.ipv4.ip_forward=1
sysctl-w
CORRECT TEXT
Open kmcrl value of 5 , and can verify in /proc/ cmdline
Correct Answer:
#vim/boot/grub/grub.confkernel/vmlinuz-2.6.32-71.el6.x86_64roroot=/dev/mapper/GLSvg-GLSrootrd_LVM_LV=GLSvg/GLSrootrd_LVM_LV=GLSvg/GLSswaprd_NO_LUKSrd_NO_MDrd_NO_DMLANG=en_US.UTF-8SYSFONT=latarcyrheb-sun16KEYBOARDTYPE=pcKEYTABLE=uscrashkernel=autorhgbquietkmcrl=5Restarttotakeeffectandverification:
#cat/proc/cmdlineroroot=/dev/mapper/GLSvg-GLSrootrd_LVM_LV=GLSvg/GLSrootrd_LVM_LV=GLSvg/GLSswaprd_NO_LUKSrd_NO_MDrd_NO_DMLANG=en_US.UTF-8SYSFONT=latarcyrheb-sun16KEYBOARDTYPE=pcKEYTABLE=usrhgbquietkmcrl=5
SIMULATION
Add an additional swap partition of 754 MB to your system.
The swap partition should automatically mount when your system boots.
Do not remove or otherwise alter any existing swap partitions on your system.
Correct Answer:
fdisk-l
fdisk-cu/dev/vdapneorpselectedefault(first):enterdefault(last):enterndefault(first):enterdefault(first):+754Mt(1-5)l:82pw
#reboot
#mkswap/dev/vda5
vim/etc/fstab/dev/vda5swapswapdefaults00wq
mount-a
swapon-a
swapon-s
CORRECT TEXT
Make on data that only the user owner and group owner member can fully access.
Correct Answer:
chmod770/data
Verifyusing:ls-ld/dataPreviewshouldbelike:drwxrwx---2rootsysadmin4096Mar1618:08/dataTochangethepermissionondirectoryweusethechmodcommand.Accordingtothequestionthatonlytheowneruser(root)andgroupmember(sysadmin)canfullyaccessthedirectoryso:chmod770/data
CORRECT TEXT
/data Directory is shared from the server1.example.com server. Mount the shared directory that:
a. when user try to access, automatically should mount
b. when user doesn't use mounted directory should unmount automatically after 50 seconds.
c. shared directory should mount on /mnt/data on your machine.
Correct Answer:
1.vi/etc/auto.master/mnt/etc/auto.misc--timeout=50
vi/etc/auto.misc
data-rwsoftintrserver1.example.com:/data
serviceautofsrestart
chkconfigautofsonWhenyoumounttheotherfilesystemyoushouldunmountthemountedfilesystemAutomountfeatureoflinuxhelpstomountataccesstimeandaftercertainsecondswhenuserunaccessthemounteddirectoryautomaticallyunmountthefilesystem./etc/auto.masteristhemasterconfigurationfileforautofsservice.Whenyoustarttheserviceitreadsthemountpointasdefinedin/etc/auto.master.
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