Q1: What is the use of docker update command with example and image?

DevOps
Posted on | by anil

MOTOSHARE 🚗🏍️
Turning Idle Vehicles into Shared Rides & Earnings

From Idle to Income. From Parked to Purpose.
Earn by Sharing, Ride by Renting.
Where Owners Earn, Riders Move.
Owners Earn. Riders Move. Motoshare Connects.

With Motoshare, every parked vehicle finds a purpose. Owners earn. Renters ride.
🚀 Everyone wins.

Start Your Journey with Motoshare

The docker update command dynamically updates container configuration like cpu, memory etc.

To specify more than one container, provide space-separated list of container names or IDs.

		root@ip-172-31-28-155:/home/ubuntu# docker stats | egrep "CONTAINER|anoop_ubuntu_mem"
		CONTAINER ID   NAME                         CPU %     MEM USAGE / LIMIT     MEM %     NET I/O           BLOCK I/O         PIDS
		ae8459944595   anoop_ubuntu_mem             0.00%     3.781MiB / <strong><span class="has-inline-color has-primary-color">2GiB</span></strong>       0.18%     1.23kB / 0B       0B / 0B           3

		root@ip-172-31-28-155:/home/ubuntu# <strong><span class="has-inline-color has-primary-color">docker update --memory "5g" ae8459944595</span></strong>
		ae8459944595
		Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
		
		root@ip-172-31-28-155:/home/ubuntu# docker stats | egrep "CONTAINER|anoop_ubuntu_mem"
		CONTAINER ID   NAME                         CPU %     MEM USAGE / LIMIT     MEM %     NET I/O           BLOCK I/O         PIDS
		ae8459944595   anoop_ubuntu_mem             0.00%     3.781MiB /<strong> </strong><span class="has-inline-color has-primary-color"><strong>5GiB</strong>       </span>0.07%     1.23kB / 0B       0B / 0B           3Code language: HTML, XML (xml)