Using Docker on AWS

Using Docker on AWS


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Docker Deep Dive - Container Networking

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Docker Deep Dive - Container Networking Containers need to talk to each other. Sometimes they even need to talk to VMs and physicals and even the internet. On the flip side sometimes those VMs, physicals and the internet they need to talk back to containers. To help with that we have got a bunch of container networking options. Network Types in Docker Bridge Network: Sometimes we call this as single house networking.It's turned on by default. SO you have got a host and it's running docker right. It's got a built-in network called bridge or NAT in windows. Each container gets its own IP on the bridge network.They can all talk to each other. But containers on seperate bridges? That's a bit of a hassle because each one of this bridges is isolated, so these two we can see are isolated layer two networks and it would be the same even if they were on the same host. The only way to get in or out is to map ports to the host. This is ok but not very ...
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How to Disable Root SSH Access on CentOS 7

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First, create an alternate user instead of using the default "root" useradd  doneill Second, set a password for this user passwd  doneill   Third, give sudo  permission for this user. For that go this file visudo Add permission to your user  like this. Here the user name is doneill Now check whether you can run the sudo  command with username as doneill   su doneill  sudo ls If things work good, continue Now prevent SSH login as root user. vi  /etc/ssh/sshd_config Search for "Permit" word to Now restart your ssh service by below command service sshd restart Thats  it. Now please check what you have done is working fine. Don't logout now, first make sure everything is working fine. type  ssh doneill@your systemip and give the password and check if the user login works fine.
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Docker - Building a Secure Swarm

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notion:   an impulse or desire               a conception of or belief about something. quorum: the   smallest   number   of   people   needed   to be   present   at a   meeting   before it can officially   begin   and before   official   decisions   can be taken Docker - Building a Secure Swarm Swarm is the future of Docker Swarm is a secure cluster of Docker nodes Swarm hs two parts Secure Cluster part Orchestrator part What is a secure swarm cluster? Well at the highest level, it's a cluster of docker nodes. We got managers and workers and everything secure. So we have got mutual TLS where workers and managers mutually authenticate each other, and all of the network chat is encrypted. Plus the cluster stores encrypted, and it gets automatically distributed to all managers. And we can use labels to tag nodes and customize the cl...
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