Showing posts from March, 2020

Use the blkid command to find the UUID of the device

$ sudo blkid /dev/nvme0n1p1: LABEL="/" UUID="55da5202-8008-43e8-8ade-2572319d9185" TYPE="xfs" PARTLABEL="Linux" PARTUUID="591e81f0-99a2-498d-93ec-c9ec776ecf42" /dev/nvme1n1: UUID="7c4d5e8c-5f26-475f-b985-5a1411359058" TYPE="ext2" /dev/nvme0n1: PTUUID="83181c97-6d5e-43c9-9ede-e2f50ead5338" PTTYPE="gpt" /dev/nvme0n1p128: PARTLABEL="BIOS Boot Partition" PARTUUID="4908ae49-9d5b-423e-a23c-a507a47bacf5" /dev/nvme2n1: PTUUID="5a72544b-a4e2-4bbe-aed0-04f727374581" PTTYPE="gpt" /dev/nvme2n1p1: LABEL="/" UUID="577849ee-6d06-4473-9eec-074495a45d70" TYPE="xfs" PARTLABEL="Linux" PARTUUID="7ba2672d-1d11-4f12-9358-2edd6b813413" /dev/nvme2n1p128: PARTLABEL="BIOS Boot Partition" PARTUUID="5a9fc16d-ac21-49f8-8880-28c8f8d2e8bf"

Linux container technologies are lightweight mechanisms for isolating running processes so that they are limited to interacting with only their designated resources.

Many application instances can be running in containers on a single host without visibility into each others' processes, files, network, and so on. Typically, each container provides a single service (often called a "micro-service"), such as a web server or a database, though containers can be used for arbitrary workloads.

The Linux kernel has been incorporating capabilities for container technologies for years. More recently the Docker project has developed a convenient management interface for Linux containers on a host.

OpenShift Online is Red Hat’s application hosting platform that makes it easy for developers to quickly build, launch, and scale container-based web apps in a public cloud environment.

B2B marketplaces

Alibaba.comGlobal Sources (USA)Buyer Zone (USA)EC21 (Korea)EC Plaza (Korea)Busy Trade (Hong Kong)

Mount an NFS Volume in Linux

# mount -t nfs nfs_volume local_dir options
# mount.nfs nfs_volume local_dir options

for example:

mount -t nfs /mnt/db2

If you have problem, you might need to mount nfs4 instead.

mount -t nfs4 /mnt/db2

If permission denied, edit the /etc/exports file, for example

/opt/docroot/,sync,no_root_squash) ⇒ range of networks NFS permits accesses
rw ⇒ writable
sync ⇒ synchronize
no_root_squash ⇒ enable root privilege
no_all_squash ⇒ enable users' authority

$ sudo systemctl restart  nfs.service
( OR $ service nfs restart )

If you get the following error:

mount.nfs: No such device

Try adding the option:  -o nolock

# mount -t nfs4 nfs_volume local_dir options  -o nolock

See also:
How to fix: mount: wrong fs type, bad option, bad superblock
Also pay attention to your firewall setting.

$ sudo -i firewall-cmd --add-service=nfs --permanent
$ sudo -i firewall-cmd --reload

See also:
How to configure firewall on C…

How to install/renew SSL Certificate for Glassfish

From certificate authority, you should generally receive two files
Your signed certificate : generally named as “”
Root certificate of your certificate (you might receive more than one. In some cases certification authority sends the intermediate certificates) : Godaddy names it “gd_bundle-g2-g1.crt”

Next step is importing the keystore you used to generate the request into the Glassfish’s keystore:

keytool -importkeystore -srckeystore /your-former-used-for-request/keystore.jks -destkeystore $GLASSFISHHOME/domains/yourdomain/config/keystore.jks

Now, the final step done on keystore is importing the signed certificate. First, we gotta switch to Glassfish’s keystore and import the root certificate:

cd $GLASSFISH_HOME/domains/yourdomain/config
keytool -import -v -trustcacerts -alias root -file gd_bundle-g2-g1.crt -keystore keystore.jks -keypass changeit -storepass changeit

Then, import the signed certificate of yours:

keytool -import -v -trustcacerts -alias s1as -file yourdoma…

Hypertargeting refers to the ability to deliver advertising content to specific interest-based segments in a network.

Hypertargeting is a marketing strategy where you clearly identify a target customer and deliver extremely relevant messages in the places where they will be most likely to see it.

Segmentation : The act of dividing an audience into smaller groups based on their interactions with your brand or their demographics, sociographics, professional roles, values, goals, challenges, influences and buying habits.
Retargeting : The act of sending messages to audiences who have already engaged with your brand. This could include remarketing to people who have visited your website, visited your store, made a purchase, followed your brand on social, signed up for an online opt-in offer, or had any other interaction with your brand.

Marketing automation fields

Email marketingSocial media marketingLead nurturing and inbound marketingDigital advertisingLanding pages and forms

Not all leads are equal in terms of quality

Leads can be scored by two parameters: demographics and interactions.

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