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| author | Robert Göhler <github@ghlr.de> | 2021-01-24 22:14:00 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-01-24 22:14:00 +0100 |
| commit | c25c40dfa96dfeb022b203280c607c1f1835417b (patch) | |
| tree | ed05f81d48c65639e621ee3a067f435cb204ea9e /docs/installation/virtual/vmware.rst | |
| parent | ce9f2016218f0c162bd48457a41a18db15e52749 (diff) | |
| download | vyos-documentation-c25c40dfa96dfeb022b203280c607c1f1835417b.tar.gz vyos-documentation-c25c40dfa96dfeb022b203280c607c1f1835417b.zip | |
Migrate new file structure to crux (#435)
* order workflows and add submodule
* rename gitmodules file
* delete docs/.gitignore
* add vyos custom linter
* correct __pycache__ in gitignore
* add test-coverage.py
* move draw.io folder
* arrange changelog, install history and about
* arrange: firewall
* arrange: highavailability
* arrange: loadbalancing
* arrange: nat
* arrange: services
* sort configexamples and configuration interfaces
* wireles: rename wireless
* rearrange: Protocols and Policy
* rearrange: Firewall and Zone Policy
* rearrange: Interfaces
* rearrange: Interfaces
* rearrange: dynamic DNS
* hostinfo: add page to index
* rearrange: appendix
* venv: add Pipfile
* rearrange: contributing
* index: remove debugging
* rearrange: fix all figure and refs
* rearrange: commandtree
* fix: cli, openvpn, install headline level
* protocols: change headline
* firewall: move mss clamping
* ip: separate ipv4 and ipv6
* arp: move to static page
* igmp: rename multicast page
* Update to year 2021
Diffstat (limited to 'docs/installation/virtual/vmware.rst')
| -rw-r--r-- | docs/installation/virtual/vmware.rst | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/docs/installation/virtual/vmware.rst b/docs/installation/virtual/vmware.rst new file mode 100644 index 00000000..6feb95ba --- /dev/null +++ b/docs/installation/virtual/vmware.rst @@ -0,0 +1,32 @@ +.. _vyosonvmware:
+
+Running on VMWare ESXi
+######################
+
+ESXi 5.5 or later
+*****************
+
+.ova files are available for supporting users, and a VyOS can also be stood up using a generic Linux instance, and attaching the bootable ISO file and installing from the ISO
+using the normal process around `install image`.
+
+.. NOTE:: There have been previous documented issues with GRE/IPSEC tunneling using the E1000 adapter on the VyOS guest, and use of the VMXNET3 has been advised.
+
+Memory Contention Considerations
+--------------------------------
+When the underlying ESXi host is approaching ~92% memory utilisation it will start the balloon process in s a 'soft' state to start reclaiming memory from guest operating systems.
+This causes an artifical pressure using the vmmemctl driver on memory usage on the virtual guest. As VyOS by default does not have a swap file, this vmmemctl pressure is unable to
+force processes to move in memory data to the paging file, and blindly consumes memory forcing the virtual guest into a low memory state with no way to escape. The balloon can expand to 65% of
+guest allocated memory, so a VyOS guest running >35% of memory usage, can encounter an out of memory situation, and trigger the kernel oom_kill process. At this point a weighted
+lottery favouring memory hungry processes will be run with the unlucky winner being terminated by the kernel.
+
+It is advised that VyOS routers are configured in a resource group with adequate memory reservations so that ballooning is not inflicted on virtual VyOS guests.
+
+
+
+
+
+References
+----------
+
+https://muralidba.blogspot.com/2018/03/how-does-linux-out-of-memory-oom-killer.html
+
|