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NEW QUESTION # 18
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of dat
a. The size is allowed between 160-160 MB after extending.
Answer:
Explanation:
lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common
NEW QUESTION # 19
Some users home directory is shared from your system. Using showmount -e localhost command, the shared directory is not shown. Make access the shared users home directory.
Answer:
Explanation:
see explanation below.
Explanation
* Verify the File whether Shared or not ? : cat /etc/exports
* Start the nfs service: service nfs start
* Start the portmap service: service portmap start
* Make automatically start the nfs service on next reboot: chkconfig nfs on
* Make automatically start the portmap service on next reboot: chkconfig portmap on
* Verify either sharing or not: showmount -e localhost
* Check that default firewall is running on system?
If running flush the iptables using iptables -F and stop the iptables service.
NEW QUESTION # 20
Install the Kernel Upgrade.
Install suitable kernel update from:
http://server.domain11.example.com/pub/updates.
Following requirements must be met:
Updated kernel used as the default kernel of system start-up.
The original kernel is still valid and can be guided when system starts up.
Answer:
Explanation:
Using the browser open the URL in the question, download kernel file to root or home directory.
uname -r// check the current kernel version
rpm -ivh kernel-*.rpm
vi /boot/grub.conf// check
Some questions are: Install and upgrade the kernel as required. To ensure that grub2 is the default item for startup.
Yum repo : http://content.example.com/rhel7.0/x86-64/errata
OR
uname -r // check kernel
Yum-config-manager --add-repo="http://content.example.com/rhel7.0/x86-64/ errata" Yum clean all Yum list kernel// install directly Yum -y install kernel// stuck with it, do not pipe! Please do not pipe!
Default enable new kernel grub2-editenv list// check
Modify grub2-set-default "kernel full name"
Grub2-mkconfig -o/boot/grub2/grub.cfg// Refresh
NEW QUESTION # 21
Create a systemd service named backup-now.service that runs /usr/local/bin/backup-now.sh.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
Create the script:
mkdir -p /usr/local/bin
cat > /usr/local/bin/backup-now.sh < < 'EOF'
#!/bin/bash
tar -czf /root/etc-$(date +%F).tar.gz /etc
EOF
chmod +x /usr/local/bin/backup-now.sh
Create the unit file:
cat > /etc/systemd/system/backup-now.service < < 'EOF'
[Unit]
Description=Run manual etc backup
[Service]
Type=oneshot
ExecStart=/usr/local/bin/backup-now.sh
[Install]
WantedBy=multi-user.target
EOF
Reload and test:
systemctl daemon-reload
systemctl start backup-now.service
systemctl status backup-now.service
Detailed Explanation:
* Type=oneshot is correct for a task that runs and exits.
* ExecStart points to the script.
* systemctl daemon-reload is required after adding a new unit file.
* RHEL 10 systemd documentation covers manual unit creation and management. ( Red Hat
Documentation )
NEW QUESTION # 22
Configure autofs
Configure autofs to automatically mount the home directory of a remote user as described below:
- materials.example.com (172.25.254.254) exports /rhome via NFS to your system. This filesystem contains a pre-configured home directory for the user
remoteuser1.
- The home directory of remoteuser1 is materials.example.com:/rhome/remoteuser1.
- The home directory of remoteuser1 should be automatically mounted locally at /rhome/remoteuser1.
- The home directory must be writable by the user.
- The password for remoteuser1 is "flectrag".
Answer:
Explanation:
Solution:
# Preparations (not required for the exam)
# Go back to foundation0, remote into classroom, create the remoteuser1 user and directory.
# This step is necessary to avoid issues with autofs mounting during testing.
[kiosk@foundation0 ~]$ ssh root@classroom 'useradd -u 1010 remoteuser1 && mkdir -p /rhome/remoteuser1 && chown remoteuser1: /rhome/remoteuser1'
# Install nfs-utils and autofs
[root@node1 ~]# yum -y install nfs-utils autofs
[root@node1 ~]# vim /etc/auto.master
/rhome /etc/auto.rhome
[root@node1 ~]# vim /etc/auto.rhome
remoteuser1 -rw materials.example.com:/rhome/remoteuser1
[root@node1 ~]# systemctl enable --now autofs
# Verification
[root@node1 ~]# ll /rhome/
[root@node1 ~]# ssh remoteuser1@localhost
remoteuser1@localhost\'s password: `flectrag`
$ pwd
/rhome/remoteuser1
$ touch my.file
$ mount | grep rhome
...
materials.example.com:/rhome/remoteuser1 on /rhome/remoteuser1 type nfs4
(`rw`,relatime,vers=4.2,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=172.25.250.100,local_lock=none,addr=1
72.25.254.254)
NEW QUESTION # 23
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