Questions tagged [redundancy]
The redundancy tag has no summary.
20 questions
3
votes
1
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792
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Building redundancy by creating multiple nfs mounts to a single location
I have been managing a small local Linux cluster for my lab, consisting about two dozens of Ubuntu Linux servers - half of those are headless servers (rack/tower), and the other half are used as ...
- 133
3
votes
0
answers
927
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Create redundant grub bootloader on Debian
I have a Debian based server, where every partition is RAIDed, except the one that has /boot/efi. This means that I will still have all my data after a disk failure, but the system may be unable to ...
- 56
4
votes
0
answers
439
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LVM: on simple raid1 with two legs Cpy%Sync never reaches 100% and always stays at 99.99%
On simple lvm raid1 with two legs Cpy%Sync never reaches 100% and always stays at 99.99%.
lvm> lvs -a -o name,raid_sync_action,sync_percent
LV SyncAction Cpy%Sync
safe ...
- 151
8
votes
2
answers
732
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Archiving program that adds redundancy
I'm looking for a archiving program that adds redundancy to an archive.
Example : I've got 500MB of data, and a 700MB media to burn it.
Rather than waste 200MB, I want to use them to add redundancy. ...
- 163
0
votes
1
answer
38
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When I get a font package with OTFs, should I also keep the Web versions?
I've just downloaded the Comic Neue font family distribution zip (from here). It has an OTF/ subfolder with 12 .otf files, and a Web/ subfolder with 49 files - .ttf, .eot, .woff and .woff2 files (same ...
- 11k
1
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0
answers
319
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OpenLDAP Cluster
Trying to implement an OpenLDAP cluster, I already managed to set up the two backend LDAP servers in mirroring mode.
The application (iRedMail) using the LDAP service is running on the same systems ...
- 11
1
vote
0
answers
136
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Ucarp with 2 interfaces
I have a server that has 2 interfaces which works like a router and a firewall too on debian. I want to use ucarp for redundency purposes. Question is how do i configure ucarp for 2 interfaces?
- 111
1
vote
2
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2k
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Most ironclad way to make root installation redundant and maximize uptime? RAID, ZFS or something else?
I would like to set up my desktop computer (which is actually a server for the KVM guests I do my actual work in) to have a redundant root installation. If one drive dies I want to quickly get back ...
- 869
11
votes
2
answers
15k
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How to make systemd-resolved stop trying to use offline DNS servers?
I have configured my DHCP server to supply two nameservers for redundancy, so that if one is offline the other one can be used.
I have configured my PCs with systemd-resolved and according to ...
- 7,435
1
vote
0
answers
358
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ICMPv6 send Multicast Listener Report Message and Neighbor Solicitation
I am configuring ucarp on two on my pc router ie master and slave. Master is turned off and then turned on, recorded in tshark slave application there is icmpv6 multicast listener report message and ...
1
vote
1
answer
279
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How to use one path in heredocument
I wrote this here-document to source a few scripts under the path ~/own_scripts/ but I wrote it in a way that causes duplication of this path:
source <<-EOF
~/own_scripts/1.sh
~/own_scripts/...
- 4,513
1
vote
0
answers
361
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Proxmox hyper-convergence and storage redundancy
What kind of storage redundancy (data blocks at least on two different physical machines) does Proxmox Hyper-Convergence provide? Nutanix does it with a controller VM (CVM), VxRail with VMware vSAN ...
- 307
1
vote
0
answers
32
views
Several WebServers redundancy with same IP for the public access
We are using 2 (or even more) WebServers for backup, so if the main WebServer went down, the others will be replaced.
For this purpose, I think I should use Virtual IP address (Red triangle), right? ...
- 777
4
votes
0
answers
251
views
Split file F into M parts, recover file F from N of those M parts [closed]
I want to split a file into M parts, such that I can recover the file from N of those M parts. (Where M>N, and I get to choose both M and N).
For example:
I have FILE.IMG
I split FILE.IMG into M=3 ...
- 141
8
votes
2
answers
1k
views
How to shard file into n-out-of-m redundancy (erasure code e.g. kind of reed solomon)?
How to shard file file into m files, so it can be recovered with any n of them ?
It looks like Erasure Code, preferably "optimal erasure codes". (Example of another application and proposed ...
- 14.8k