Paul Angus 033199972e systemvm: improve SystemVM startup and memory usage (#3126)
In order to reduce memory footprint and improve boot speed/predictability.
The following changes have been made:

- add vm.min_free_kbytes to sysctl
- periodically clear disk cache (depending on memory size)
- only start guest services specific to hypervisor
- use systemvm code to determine hypervisor type (not systemd)
- start cloud service at end of post init rather than through systemd
- reduce initial threads started for httpd
- fix vmtools config file

Fixes #3039

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2019-06-26 14:40:59 +05:30

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Desktop File

[Unit]
Description=CloudStack Agent service
After=cloud-early-config.service network.target cloud-postinit.service local-fs.target
[Install]
WantedBy=multi-user.target
[Service]
Type=simple
WorkingDirectory=/usr/local/cloud/systemvm
ExecStart=/usr/local/cloud/systemvm/_run.sh
Restart=on-failure