'How to increase vm.max_map_count?

I'm trying to run Elastic search in an Ubuntu EC2 machine (t2.medium).

But I'm getting the message:

max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

How can I increase the vm.max_map_count value?

Solution 1:^[1]

To make it persistent, you can add this line:

vm.max_map_count=262144

in your /etc/sysctl.conf and run

$ sudo sysctl -p

to reload configuration with new value

Solution 2:^[2]

I use

# sysctl -w vm.max_map_count=262144

And for the persistence configuration

# echo "vm.max_map_count=262144" >> /etc/sysctl.conf

Att.

Solution 3:^[3]

Note that

From version 207 and 21x, systemd only applies settings from /etc/sysctl.d/*.conf and /usr/lib/sysctl.d/*.conf. If you had customized /etc/sysctl.conf, you need to rename it as /etc/sysctl.d/99-sysctl.conf. If you had e.g. /etc/sysctl.d/foo, you need to rename it to /etc/sysctl.d/foo.conf.

See https://wiki.archlinux.org/index.php/sysctl#Configuration

So add vm.max_map_count=262144 in /etc/sysctl.d/99-sysctl.conf and then run

sudo sysctl --system

Solution 4:^[4]

sysctl -w vm.max_map_count=262144

Solution 5:^[5]

When:

permission denied on key 'vm.max_map_count'

sudo sysctl -w vm.max_map_count=262144

Solution 6:^[6]

If you are using ubuntu VM, then navigate to etc folder.

Run vim sysctl.conf
Add vm.max_map_count=262144 to the end of the file and save
Finally run sudo sysctl -w vm.max_map_count=262144 this command you will see vm.max_map_count=262144

Solution 7:^[7]

Following command as worked fine on Fedora 28 (Linux 4.19 Kernel)

sudo echo "vm.max_map_count=262144" >> /etc/sysctl.d/elasticsearchSpecifications.conf && sudo sysctl --system

Solution 8:^[8]

I found that when adding the settings to /etc/sysctl.conf, the system actually saved the changes to /etc/sysctl.d/99-sysctl.conf.

And when saving the changes to /etc/sysctl.d/99-sysctl.conf, it's also saved to /etc/sysctl.conf, so I think they both point to the same file.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	jdbs
Solution 2	Dmytro Dadyka
Solution 3
Solution 4	J. Scott Elblein
Solution 5	J. Scott Elblein
Solution 6	ejuhjav
Solution 7	Stanislas5
Solution 8	David Liu

'How to increase vm.max_map_count?

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