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awarded  Constituent
23h
reviewed Approve Openstack multiple nodes: separate Glance and Keystone machines
23h
reviewed Approve OpenStack: Can I convert a volume into an image?
23h
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reviewed Approve Hosting websites in our Workplace custom-built datacentre
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reviewed Approve How to convert VirtualBox VM to OpenStack?
Aug
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Aug
19
answered Send proper UUID over tcp
Aug
18
answered incremental backup IMG files - Linux
Aug
18
comment incremental backup IMG files - Linux
It is exactly what rsync does (copies only changed parts of file), but to do that, it has to read and checksum the whole file on both sides. So disk i/o is the same, but network traffic is less.
Aug
17
comment incremental backup IMG files - Linux
What was not working for you in the solutions ruled out? It seems that rsync would be the best bet for you...
Aug
17
revised Create a block device in RAM
added 851 characters in body
Aug
17
answered Create a block device in RAM
Aug
17
comment Recommended 3x SSD Raid for mysql database
Do your benchmarks. Without knowing your database and your workload, we can hardly guess what is going to work best for you.
Aug
16
comment Dovecot 10-master.conf file configuration issue
you probably should show us postfix config (you can skip comments; and filter out sensitive data) as well, as the error is from postfix. (and it may mean you have misconfigured postfix, instead of dovecot) Did you verify, that socket /var/spool/postfix/private/auth exist, when dovecot is running?
Aug
16
answered 10,000 entries in iptables on CentOS 4GB Ran, dual core 2.3ghz?
Aug
16
comment Blocking ddos string with iptables
Be careful. If you keep receiving such packets, but they don't harm the machine itself in any way, adding payload inspection might actually increase the load of your machine. As @lain notes, you won't free the line this way. Your command should work, but it can probably be rather easily evaded by the attacker. Adding multiple inspections like this will have even bigger performance attack.
Aug
15
comment Apache - drawback to high number of httpd processes always running
Did you serve 1000 requests in parallel, or just spawned the processes? Are you using mod_php or something similar?
Aug
15
comment Spreading a table's partitions across drives
I kind of don't understand what difference between the two you expect. (Besides some performance)
Aug
15
answered Spreading a table's partitions across drives