After a reboot of my Ceph test VM's a few OSD's didnt come online. When running ceph osd tree I saw: 1[root@lib-cephosd1 ~]# ceph osd tree 2ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY 3 -1 0.29984 root default 4 -2 0.09995 host lib-cephosd1 5 1 0.00999 osd.1 up 1.00000 1.00000 6 0 0.00999 osd.0 up 1.00000 …

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HP Bl460C G6 Centos7 RAID tool Works on my HP G6 servers with this in lspci 0c:00.0 RAID bus controller: Hewlett-Packard Company Smart Array G6 controllers (rev 01) wget http://mirror.nforce.com/pub/software/raidtools/hpacucli-tool/hpacucli-9.40-12.0.x86_64.rpm yum install hpacucli-9.40-12.0.x86_64.rpm hpacucli ctrl …

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Original Article - http://christiank.org/wp/2010/12/pipe-a-gzipped-mysql-dump-over-ssh/ If you want to take a SQL dump from some host, compress it and send it across SSH to another host then this is the command you are chasing mysqldump -u MYSQL_USERNAME -p YOUR_DATABASE | gzip -c | ssh USERNAME@YOUR_TO_HOST 'cat > …

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