Find slow Ceph OSD’s

Find the OSD in the cluster that’s bringing the whole party down. grep ‘slow request’ /var/log/ceph/ceph.log | awk ‘{print $3}’ | sort | uniq -c | sort -n

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IO’s blocked when bringing new Ceph node online

Just a reminder folks, when you bring online a new Ceph node with a bunch of new(Or existing) OSD’s you might see it blocking IO’s for some reason. This might show as “Requests are blocked > 32 sec” or simply as the VM’s accessing the cluster are stalling and or reporting their own IO issues. […]

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Mikrotik BGP

To show what routes you are receiving from a particular peer on Mikrotik   ip route print detail where received-from={PeerName}   OR ip route print detail where bgp-as-path=123456

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