### Install DHCP Server [root@testos ~]# yum -y install dhcp ### Configure DHCP Server [root@testos ~]# vi /etc/dhcp/dhcpd.conf # create new # specify domain name option domain-name “unixtest.com”; # specify name server’s hostname or IP address option domain-name-servers testos.unixtest.com; # default lease time default-lease-time 600; # max lease time max-lease-time 7200; # this DHCP server … Read more
rm -rf /etc/localtime ln -s /usr/share/zoneinfo/Asia/Tehran /etc/localtime dpkg-reconfigure -f noninteractive tzdata 2. Change the timezone via k8s mount hostPath: spec: containers: – name: nginx image: nginx ports: – containerPort: 80 name: nginx volumeMounts: – name: tz-config mountPath: /etc/localtime volumes: – name: tz-config hostPath: path: /usr/share/zoneinfo/Asia/Tehran
Download / Untar NetBackup Client binary package and exec installation script: ### FYI, Just NetBackup master server hostname is required during installation. [root @ soltest]/tmp # tar -xf NetBackup_7.6.0.1_CLIENTS1.tar [root @ soltest]/tmp # cd NetBackup_7.6.0.1_CLIENTS1 [root @ soltest]/tmp/NetBackup_7.6.0.1_CLIENTS1 # ./install Symantec Installation Script Copyright 1993 – 2013 Symantec Corporation, All Rights Reserved. Installing NetBackup Client … Read more
NOTICE: Before you start DellEMC powerpath installation and configuration, make sure HBA cards are installed on the server and Fiber channel switches are zoned properly. [root@unixonline ~]# tar -xzf DellEMCPower.LINUX-7.4.0.b201.tar.gz [root@unixonline ~]# ls DellEMCPower.LINUX-7.4.0.00.00-201.OL7.x86_64.rpm DellEMCPower.LINUX-7.4.0.00.00-201.RHEL8.x86_64.rpm DellEMCPower.LINUX-7.4.0.b201.tar.gz DellEMCPower.LINUX-7.4.0.00.00-201.OL8.x86_64.rpm DellEMCPower.LINUX-7.4.0.00.00-201.SLES12SP5.x86_64.rpm DellEMCPower.LINUX-7.4.0.00.00-201.RHEL7.x86_64.rpm DellEMCPower.LINUX-7.4.0.00.00-201.SLES15SP3.x86_64.rpm In this example, DellEMC Powerpath 7 ( DellEMCPower.LINUX-7.4.0.00.00-201.RHEL7.x86_64.rpm ) is installed on Red Hat 7. … Read more
There are several commands available that allow you to reset one or more interconnects in Linux, issue_lip is one and the most recommended command. The following command can be used to find HBA device name.(in this example host1,host2): [root@unixonline ~]# systool -c fc_host -v|egrep “Device =|node_name|port_state|speed” Class Device = “host1” node_name = “0x20000032fff8dce3” port_state = … Read more
To monitor which process is using swap, you can use the top command:Log in to Advanced shell (bash).Type the following command to enter the top utility: # top [root@unixonline]# top top – 01:10:24 up 230 days, 9:05, 9 users, load average: 0.00, 0.01, 0.05 Tasks: 220 total, 1 running, 219 sleeping, 0 stopped, 0 zombie … Read more
How-To Steps: Scan and discover SCSI devices in Linux cli: scsi-rescan OR: ls -l /sys/class/scsi_host/echo “- – -” > /sys/class/scsi_host/host0/scanecho “- – -” > /sys/class/scsi_host/host1/scanecho “- – -” > /sys/class/scsi_host/host2/scanecho “- – -” > /sys/class/scsi_host/host3/scanecho “- – -” > /sys/class/scsi_host/host4/scanecho “- – -” > /sys/class/scsi_host/host5/scanecho “- – -” > /sys/class/scsi_host/host6/scan The commands to scan and … Read more
checking glusterfs configurations: [root@glustertest1 ~]# gluster volume info Volume Name: test_volType: DisperseVolume ID: b23f6c11-8dfe-4d51-919d-35a30dd75100Status: StoppedSnapshot Count: 0Number of Bricks: 1 x (4 + 2) = 6Transport-type: tcpBricks:Brick1: glustertest1:/glusterfs/brick1Brick2: glustertest2:/glusterfs/brick1Brick3: glustertest3:/glusterfs/brick1Brick4: glustertest4:/glusterfs/brick1Brick5: glustertest5:/glusterfs/brick1Brick6: glustertest6:/glusterfs/brick1Options Reconfigured:transport.address-family: inetnfs.disable: on[root@glustertest1 ~]# [root@glustertest1 ~]# gluster volume statusVolume test_vol is not started if its not started: mount glusterFS: [root@glustertest1 ~]# mount … Read more
### Install Chrony. [root@testos ~]# yum -y install chrony ### Edit/Update Chrony Configuration file [root@testos ~]# vi /etc/chrony.conf ### line 3: change servers for synchronization #server 0.centos.pool.ntp.org iburst #server 1.centos.pool.ntp.org iburst #server 2.centos.pool.ntp.org iburst #server 3.centos.pool.ntp.org iburst server <NTP1 SERVER ADDRESS> iburst server <NTP2 SERVER ADDRESS> iburst server <NTP3 SERVER ADDRESS> iburst ### line 25: … Read more