CHUNKSERVER AS A SERVICE
1. Prepare another mfschunkserver.cfg file for the new chunkserver in a different path, let’s call it /etc/chunkserver2.cfg
2. Prepare another mfshdd.cfg file for the new chunkserver in a different path, let’s call it /etc/hdd2.cfg
3. Set HDD_CONF_FILENAME in chunkserver2.cfg file to the path of newly prepared mfshdd.cfg file, in this example /etc/hdd2.cfg
4. Set CSSERV_LISTEN_PORT to non-default, unused port (like 9522) in /etc/chunkserver2.cfg
5. Run the second chunkserver with mfschunkserver -c /etc/chunkserver2.cfg
6. Repeat if you need even more chunkservers on the same machine (not very recommended though)
P.S. If you need to run the second chunkserver as a service, not just daemonized process, then you’d have to prepare a simple systemd/init.d script yourself for now, there are no out-of-the-box solutions yet. If you do prepare something like this, feel free to contribute via a pull request.
DOCKER
You can setup multiple chunkservers on the same machine very easily with docker.
docker run -d –restart always –net=host -e MASTER_HOST=localhost \
–name=chunk_HD01 \
-e MFS_CSSERV_LISTEN_PORT=9460 \
-e MFS_LABEL=HD01 \
-v /mnt/HD01/:/mnt/HD01:rw \
-e ACTION=chunk hradec/docker_lizardfs_git
docker run -d –restart always –net=host -e MASTER_HOST=localhost \
–name=chunk_HD02 \
-e MFS_CSSERV_LISTEN_PORT=9461 \
-e MFS_LABEL=HD02 \
-v /mnt/HD02/:/mnt/HD02:rw \
-e ACTION=chunk hradec/docker_lizardfs_git
where your first hard drive is mounted at /mnt/HD1, the second at /mnt/HD2, and son on…
This docker image let you set ANY of the mfschunkserver.conf options by using -e MFS_
By mounting the local /mnt/HD1 path in the container path /mnt/HD1 (-v /mnt/HD01/:/mnt/HD01:rw), triggers the image to auto-generate the mfshdds.conf file from whatever folder shows up at /mnt/*
You can mount just one path for each chunkservers (as I demonstrated), or you can mount as many paths as you want for a chunkserver, covering booth situations – 1 chunkserver for multiple disks (LizardFS Default setup), or multiple chunkservers for multiple disks!
The –net=host forces the container to use the main hardware nic’s in you machine, so theres no overhead of a virtual lan layer.
The image can be used to start any of the servers, include metalogger,
shadow, master and cgi. Just set the server in the -e ACTION=
running the image like this:
docker run -ti –rm hradec/docker_lizardfs_git
will display a quick help on how to use it!
