yes i imagined that, indeed i will not allocate that amount of RAM, but at least a number higher than 920 M. OK so summarizing: 1) i stop mesos slave with: service mesos-slave stop 2)then as June suggest i run: sudo sh -c "echo MESOS_WORK_DIR=/scratch.local/mesos >> /etc/default/mesos-slave" 3) then as Arjun suggets:
rm -f /tmp/mesos/meta/slaves/latest mesos-slave --master=MASTER_ADDRESS:5050 --hostname=slave_public_IP_i_set --resources='cpu(*):1;mem(*):1000;disk(*):8000' Is this correct procedure? 2016-04-08 23:57 GMT+02:00 Stefano Bianchi <[email protected]>: > i tried the command: free -m > and i obtained this output: > total used free shared > buff/cache available > > Mem: 1840 120 1407 40 312 > 1507 > > Swap: 0 0 0 > > so there is not 2048 MB of RAM? i'm sure that openstack tells me that this > is a machine with 2048 MB of RAM... > > 2016-04-08 23:44 GMT+02:00 Arkal Arjun Rao <[email protected]>: > >> You set it up with 2048MB but you probably don't really get all of it >> (try `free -m` on the slave). Same with Disk (look at the value of df). >> from the book "Building Applications in Mesos": >> "The slave will reserve 1 GB or 50% of detected memory, whichever is >> smaller, in order to run itself and other operating system services. >> Likewise, it will reserve 5 GB or 50% of detected disk, whichever is >> smaller." >> >> If you want to explicitly reserve a value, first ensure you have the >> resources you want per slave then run this >> <kill the mesos slave process> >> rm -f /tmp/mesos/meta/slaves/latest >> mesos-slave --master=MASTER_ADDRESS:5050 --hostname=slave_public_IP_i_set >> --resources='cpu(*):1;mem(*):2000;disk(*):9000' >> >> Arjun >> >> On Fri, Apr 8, 2016 at 2:23 PM, Stefano Bianchi <[email protected]> >> wrote: >> >>> What has to be clear is that i'm running virtual machines on openstack, >>> so i am not on bare metal. >>> All the VMs are Openstack Images, and each slave has been built with >>> 2048 MB of RAM, so since slaves are 3 i should see in mesos something close >>> to 6144 MB, but mesos shows only 2.7 GB. >>> If you look at the command output i posted in previous messages, the >>> current mesos resources configuration allows 920 MB and 5112 MB of disk >>> space for each slave. I would like that mesos can see for instance 2000 MB >>> of RAM and 9000 MB of disk. and for this reason i have run: mesos-slave >>> --master=MASTER_ADDRESS:5050 --resources='cpu:1;mem:2000;disk:9000' >>> >>> June Taylor, i need to understand: >>> 1) What the command you suggest do? >>> 2) Should i stop mesos-slave before? and then run your command? >>> >>> Thanks in advance. >>> >>> 2016-04-08 21:28 GMT+02:00 June Taylor <[email protected]>: >>> >>>> How much actual RAM do your slaves contain? You can only make available >>>> up to that amount, minus the bit that the slave reserves. >>>> >>>> >>>> Thanks, >>>> June Taylor >>>> System Administrator, Minnesota Population Center >>>> University of Minnesota >>>> >>>> On Fri, Apr 8, 2016 at 1:29 PM, Stefano Bianchi <[email protected]> >>>> wrote: >>>> >>>>> Hi i would like to enter in this mailing list. >>>>> i'm currently doing my Master Thesis on Mesos and Calico. >>>>> I'm working at INFN, institute of nuclear physics. The goal of the >>>>> thesis is to build a PaaS where mesos is the scheduler and Calico must >>>>> allow the interconnection between multiple datacenters linked to the CERN. >>>>> >>>>> I'm exploiting an IaaS based on Openstack, here i have created 6 >>>>> Virtual Machines, 3 Masters and 3 Slaves, on one slave is running >>>>> Mesos-DNS >>>>> from Marathon. >>>>> All is perfectly working, since i am on another network i changed >>>>> correctly the hostnames such that on mesos are resolvable and i tried to >>>>> run from marathon a simple http server which is scalable on all my >>>>> machine. >>>>> So all is fine and working. >>>>> >>>>> The only thing that i don't like is that each 3 slaves have 1 CPU 10 >>>>> GB of disk memory and 2GB of RAM, but mesos currently show for each one >>>>> only 5 GB of disk memory and 900MB of RAM. >>>>> So checking in documentation i found the command to manage the >>>>> resources. >>>>> I stopped Slave1, for instance, and i have run this command: >>>>> >>>>> mesos-slave --master=MASTER_ADDRESS:5050 >>>>> --resources='cpu:1;mem:2000;disk:9000' >>>>> >>>>> where i want set 2000 GB of RAM and 9000GB of disk memory. >>>>> The output is the following: >>>>> >>>>> I0408 15:11:00.915324 7892 main.cpp:215] Build: 2016-03-10 20:32:58 by >>>>> root >>>>> >>>>> I0408 15:11:00.915436 7892 main.cpp:217] Version: 0.27.2 >>>>> >>>>> I0408 15:11:00.915448 7892 main.cpp:220] Git tag: 0.27.2 >>>>> >>>>> I0408 15:11:00.915459 7892 main.cpp:224] Git SHA: >>>>> 3c9ec4a0f34420b7803848af597de00fedefe0e2 >>>>> >>>>> I0408 15:11:00.923334 7892 systemd.cpp:236] systemd version `219` >>>>> detected >>>>> >>>>> I0408 15:11:00.923384 7892 main.cpp:232] Inializing systemd state >>>>> >>>>> I0408 15:11:00.950050 7892 systemd.cpp:324] Started systemd slice >>>>> `mesos_executors.slice` >>>>> >>>>> I0408 15:11:00.951529 7892 containerizer.cpp:143] Using isolation: >>>>> posix/cpu,posix/mem,filesystem/posix >>>>> >>>>> I0408 15:11:00.963232 7892 linux_launcher.cpp:101] Using >>>>> /sys/fs/cgroup/freezer as the freezer hierarchy for the Linux launcher >>>>> >>>>> I0408 15:11:00.965541 7892 main.cpp:320] Starting Mesos slave >>>>> >>>>> I0408 15:11:00.966008 7892 slave.cpp:192] Slave started on >>>>> 1)@192.168.100.56:5051 >>>>> >>>>> I0408 15:11:00.966023 7892 slave.cpp:193] Flags at startup: >>>>> --appc_store_dir="/tmp/mesos/store/appc" --authenticatee="crammd5" >>>>> --cgroups_cpu_enable_pids_and_tids_count="false" >>>>> --cgroups_enable_cfs="false" --cgroups_hierarchy="/sys/fs/cgroup" >>>>> --cgroups_limit_swap="false" --cgroups_root="mesos" >>>>> --container_disk_watch_interval="15secs" --containerizers="mesos" >>>>> --default_role="*" --disk_watch_interval="1mins" --docker="docker" >>>>> --docker_auth_server="https://auth.docker.io"; >>>>> --docker_kill_orphans="true" --docker_puller_timeout="60" >>>>> --docker_registry="https://registry-1.docker.io"; >>>>> --docker_remove_delay="6hrs" --docker_socket="/var/run/docker.sock" >>>>> --docker_stop_timeout="0ns" --docker_store_dir="/tmp/mesos/store/docker" >>>>> --enforce_container_disk_quota="false" >>>>> --executor_registration_timeout="1mins" >>>>> --executor_shutdown_grace_period="5secs" >>>>> --fetcher_cache_dir="/tmp/mesos/fetch" --fetcher_cache_size="2GB" >>>>> --frameworks_home="" --gc_delay="1weeks" --gc_disk_headroom="0.1" >>>>> --hadoop_home="" --help="false" --hostname_lookup="true" >>>>> --image_provisioner_backend="copy" --initialize_driver_logging="true" >>>>> --isolation="posix/cpu,posix/mem" --launcher_dir="/usr/libexec/mesos" >>>>> --logbufsecs="0" --logging_level="INFO" --master="192.168.100.55:5050" >>>>> --oversubscribed_resources_interval="15secs" --perf_duration="10secs" >>>>> --perf_interval="1mins" --port="5051" --qos_correction_interval_min="0ns" >>>>> --quiet="false" --recover="reconnect" --recovery_timeout="15mins" >>>>> --registration_backoff_factor="1secs" >>>>> --resources="cpu:1;mem:2000;disk:9000" >>>>> --revocable_cpu_low_priority="true" >>>>> --sandbox_directory="/mnt/mesos/sandbox" --strict="true" >>>>> --switch_user="true" --systemd_enable_support="true" >>>>> --systemd_runtime_directory="/run/systemd/system" --version="false" >>>>> --work_dir="/tmp/mesos" >>>>> >>>>> I0408 15:11:00.967485 7892 slave.cpp:463] Slave resources: cpu(*):1; >>>>> mem(*):2000; disk(*):9000; cpus(*):1; ports(*):[31000-32000] >>>>> >>>>> I0408 15:11:00.967547 7892 slave.cpp:471] Slave attributes: [ ] >>>>> >>>>> I0408 15:11:00.967560 7892 slave.cpp:476] Slave hostname: >>>>> slave1.openstacklocal >>>>> >>>>> I0408 15:11:00.971304 7893 state.cpp:58] Recovering state from >>>>> '/tmp/mesos/meta' >>>>> >>>>> *Failed to perform recovery: Incompatible slave info detected*. >>>>> >>>>> ------------------------------------------------------------ >>>>> >>>>> Old slave info: >>>>> >>>>> hostname: "*slave_public_IP_i_set*" >>>>> >>>>> resources { >>>>> >>>>> name: "cpus" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 1 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "mem" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 920 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "disk" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 5112 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "ports" >>>>> >>>>> type: RANGES >>>>> >>>>> ranges { >>>>> >>>>> range { >>>>> >>>>> begin: 31000 >>>>> >>>>> end: 32000 >>>>> >>>>> } >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> id { >>>>> >>>>> value: "ad490064-1a6e-415c-8536-daef0d8e3572-S7" >>>>> >>>>> } >>>>> >>>>> checkpoint: true >>>>> >>>>> port: 5051 >>>>> >>>>> ------------------------------------------------------------ >>>>> >>>>> New slave info: >>>>> >>>>> hostname: " >>>>> >>>>> slave1.openstacklocal >>>>> >>>>> " >>>>> >>>>> resources { >>>>> >>>>> name: "cpu" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 1 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "mem" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 2000 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "disk" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 9000 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "cpus" >>>>> >>>>> type: SCALAR >>>>> >>>>> scalar { >>>>> >>>>> value: 1 >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> resources { >>>>> >>>>> name: "ports" >>>>> >>>>> type: RANGES >>>>> >>>>> ranges { >>>>> >>>>> range { >>>>> >>>>> begin: 31000 >>>>> >>>>> end: 32000 >>>>> >>>>> } >>>>> >>>>> } >>>>> >>>>> role: "*" >>>>> >>>>> } >>>>> >>>>> id { >>>>> >>>>> value: "ad490064-1a6e-415c-8536-daef0d8e3572-S7" >>>>> >>>>> } >>>>> >>>>> checkpoint: true >>>>> >>>>> port: 5051 >>>>> >>>>> ------------------------------------------------------------ >>>>> >>>>> To remedy this do as follows: >>>>> >>>>> Step 1: rm -f /tmp/mesos/meta/slaves/latest >>>>> >>>>> This ensures slave doesn't recover old live executors. >>>>> >>>>> Step 2: Restart the slave. >>>>> >>>>> >>>>> >>>>> I can notice two things: >>>>> >>>>> >>>>> 1)the message of failure; >>>>> >>>>> 2)the hostname is changed; the right one is a public IP i have set in >>>>> order to resolve the hostname for mesos. >>>>> >>>>> As a consequence, when i start the slave, the resources are exaclty the >>>>> same, nothing is changed. >>>>> >>>>> Can you please help me? >>>>> >>>>> >>>>> Thanks! >>>>> >>>>> >>>>> >>>> >>> >> >> >> -- >> Arjun Arkal Rao >> >> PhD Student, >> Haussler Lab, >> UC Santa Cruz, >> USA >> >> [email protected] >> >> >
