services:vpshosts
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services:vpshosts [2017/02/22 20:38] dgalloway |
services:vpshosts [2017/08/15 22:46] (current) djgalloway |
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| ===== Virtual Machines ===== | ===== Virtual Machines ===== | ||
| - | Each VPSHOST is home to <del>8</del> 4 virtual machines. Each VM has its own JBOD disk assigned to it with 4GB RAM and 1 vCPU. | + | Each VPSHOST is home to <del>8</del> 4 virtual machines. Each VM has its own JBOD disk assigned to it with 4GB RAM and 1 vCPU **except** the first VM on each VPSHOST. It runs off the root drive. |
| In June 2016, we marked down all the even-numbered VPSes and made a change to teuthology which creates the VMs with 4GB RAM as 2GB per VM wasn't meeting the needs. See http://tracker.ceph.com/issues/15052 | In June 2016, we marked down all the even-numbered VPSes and made a change to teuthology which creates the VMs with 4GB RAM as 2GB per VM wasn't meeting the needs. See http://tracker.ceph.com/issues/15052 | ||
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| ==== Setting up a VPSHOST from scratch ==== | ==== Setting up a VPSHOST from scratch ==== | ||
| **NOTE:** This has been adapted to be applicable for 4 VPSes and disks per host. | **NOTE:** This has been adapted to be applicable for 4 VPSes and disks per host. | ||
| + | |||
| + | If setting up a host as a new or replacement VPSHOST, be sure to update your libvirt config. See http://docs.ceph.com/teuthology/docs/downburst_vms.html#vps-hosts. | ||
| + | |||
| + | If you install the machine using a ''-stock'' cobbler profile, you'll need to run the common role as well. | ||
| <code> | <code> | ||
| - | apt-get install xfsprogs | + | apt-get install xfsprogs vim |
| # Determine the first and last VPS number by reading the VPSHOST's description in the lock db | # Determine the first and last VPS number by reading the VPSHOST's description in the lock db | ||
| Line 30: | Line 34: | ||
| for disk in sd{b..d}; do mkfs -t xfs -f /dev/$disk; done | for disk in sd{b..d}; do mkfs -t xfs -f /dev/$disk; done | ||
| - | # num should be second VPM | + | ## Not really needed if next task and `mount -s` succeeds |
| + | # $num should be second VPM | ||
| num=51; for disk in sd{b..d}; do mount /dev/$disk /srv/libvirtpool/vpm0$num; let num=num+2; done | num=51; for disk in sd{b..d}; do mount /dev/$disk /srv/libvirtpool/vpm0$num; let num=num+2; done | ||
| # OR if VPM$num is >= 100, | # OR if VPM$num is >= 100, | ||
| num=101; for disk in sd{b..d}; do mount /dev/$disk /srv/libvirtpool/vpm$num; let num=num+2; done | num=101; for disk in sd{b..d}; do mount /dev/$disk /srv/libvirtpool/vpm$num; let num=num+2; done | ||
| + | # $num should be second VPM | ||
| num=51; for disk in sd{b..d}; do echo -e "UUID=$(blkid -s UUID -o value /dev/$disk)\t/srv/libvirtpool/vpm0$num\txfs\tdefaults,noatime,nodiratime,nobarrier,inode64,logbufs=8,logbsize=256k,largeio\t0\t0"; let num=num+2; done >> /etc/fstab | num=51; for disk in sd{b..d}; do echo -e "UUID=$(blkid -s UUID -o value /dev/$disk)\t/srv/libvirtpool/vpm0$num\txfs\tdefaults,noatime,nodiratime,nobarrier,inode64,logbufs=8,logbsize=256k,largeio\t0\t0"; let num=num+2; done >> /etc/fstab | ||
| # OR if VPM$num is >= 100, | # OR if VPM$num is >= 100, | ||
services/vpshosts.1487795932.txt.gz · Last modified: 2017/02/22 20:38 by dgalloway
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