add disk, firewall, flask, network, pbs

Author: BourneD

disk

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+1. simulate block device from file
+
+[generate 5G size file diskimage]
+# dd if=/dev/zero of=/diskimage bs=1M count=5120
+
+[check which loop num is free ]
+# cat /proc/mounts | grep /dev/loop 
+
+[if loop0 is not used]
+# losetup /dev/loop0 /diskimage 
+
+[generate file system in loop0 device]
+# mkfs.ext4 /dev/loop0 
+
+[mount up block device for file checking]
+# mount /dev/loop0 /mnt/diskpoint 
+
+[check device loop0 is mounted]
+# df -h
+
+
+2. extend file system
+
+$ sudo fdisk /dev/vda
+  p
+  m
+  n
+  p
+  \n\n\n
+  w
+$ sudo partprobe
+$ sudo mkfs.ext4 /dev/vda3
+$ sudo pvcreate /dev/vda3
+$ sudo pvdisplay
+$ sudo vgdisplay
+$ sudo vgextend centos /dev/vda3
+$ sudo vgdisplay
+$ sudo lvdisplay
+$ sudo lvextend -L +60G /dev/mapper/centos-root
+$ sudo resize2fs -f /dev/mapper/centos-root
+$ sudo xfs_growfs /dev/mapper/centos-root

firewall

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+1. open port for centos7 firewalled
+
+$ firewall-cmd --get-active-zones
+$ sudo firewall-cmd --zone=public --add-port=80/tcp

flask

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+[install python-virtualenv and flask]
+$ sudo yum install python-virtualenv
+$ cd ~
+$ mkdir flask && cd flask
+$ virtualenv venv
+$ source venv/bin/activate
+$ pip install flask
+
+[exit virutal env use]
+$ deactivate
+
+[Install other packages in virtualenv]
+$ pip install pkg.name [--trusted-host pypi.douban.com] -i http://pypi.douban.com/simple
+

network

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+[delete eth0 ip]
+# ip addr del 192.168.0.1 dev eth0
+

pbs

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+1. install torque in centos7
+
+$ sudo yum install torque-server.x86_64
+$ sudo yum install torque-mom.x86_64
+$ sudo yum install torque-scheduler.x86_64
+$ sudo yum install torque-client.x86_64
+
+
+2. configure queue for pbs server
+
+$ sudo qmgr -c 'create queue batch'
+$ sudo qmgr -c 'set queue batch queue_type = Execution'
+$ sudo qmgr -c 'set queue batch resources_default.nodes = 1'
+$ sudo qmgr -c 'set queue batch resources_default.walltime = 720:00:00'
+$ sudo qmgr -c 'set queue batch enabled = True'
+$ sudo qmgr -c 'set queue batch started = True'
+$ sudo qmgr -c 'set server default_queue = batch'
+$ sudo qmgr -c 'set server scheduling = True'