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64MB RAM not enough for Centos7/64b?
I got one VPS with 64MB RAM and Centos7 installed, but can not update it. "yum" always aborts with some crazy errors like:
BDB2053 Freeing read locks for locker 0x13: 18486/140095742474048
Killed
or:
error: rpmdb: BDB0113 Thread/process 19151/140211727701824 failed: BDB1507 Thread died in Berkeley DB library
Support told me 64MB is not enough for "yum" to run. Is it true? How much RAM is then necessary? 128MB? Or even more? I'd swear I was running Centos on 32MB once in the past, and did not have this problem...
Comments
Transportation has stopped using charriots and slaves since that time.
Maybe CentOS 5 or 6...but CentOS 7?
Debian really is better for very low memory.
This. Don't deploy CentOS on anything sub-512MB.
Unless you're on KVM/Xen/VMware you cannot do much about it. Yum seems to consume lots of RAM compared to other package managers.
If you're on on KVM though, you might give zram a shot (success story here, and my own experience proves it's worth trying).
Take a look here, you will find the minimum requirements for each distribution:
https://access.redhat.com/articles/rhel-limits
Disable yum's fastestmirror plugin and you can get yum to just about run on 64mb. Have you tried asking your host for a temporary RAM/SWAP increase so you can install stuff?
Debian 6 or 7 32bit Minimal and will work like a harm
As @linuxthefish mentioned - you need to turn off yum plugins and then it may just just be enough. That being said I don't like running CentOS on anything with less 256MB as its just a lot more hungry than Debian.
Uh? Debian 7 is now on LTS only and 6 is abandoned already, no one should use them for new installs.
Debian 8 x86 will run fine with 64MB. arm64 will have some issues with this little amount of RAM.
Correct forgot about Debian 8 which is running on my home backup server pretty well.
However people still prefer Debian 6 probably because they used to it.
That's no excuse to use an unmaintained system. Is not like Debian has changed a lot from 6 to 8, other than systemd and updated packages.
That won't do.
That's enough
But that's optional. You can replace it with sysvinit by just one command.
At least 1024 MB RAM is required to install and use CentOS-7
source: https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7#head-281c090cc4fbc6bb5c7d4cd82a266fce807eee7c
What's wrong with Debian 7? Isn't LTS still getting security updates, from the community team, but still getting stuff updated, no?
Nothing wrong in keeping a Debian 7 install a bit longer with LTS, but no one should be deploying new ones now.
Also the LTS team has some limitations and doesn't support every package, so you could have some unsupported vulnerable software, there is a tool to check for that.
Not surprised. RHEL is aimed at the enterprise market, not the low end VPS market. In my day job, a 4GB VM is considered "small" and that's not atypical of big organizations with large farms...that's who RHEL targets.
Debian is more universal. Nothing wrong with CentOS of course, just that you have to understand they're not testing on 64MB or even interested.
mayb 256MB, this is what get from a minimum centos NAT
----------- total used free shared buff/cache available Mem: 256M 6.2M 198M 2.6M 51M 192M Swap: 0B 0B 0BI can boot CentOS with 64MB very likely. That doesn't mean that it'll run properly.
i use the above box with rsync only, no idea how it performs with other apps..
since you have more experiences about vpns then do you think it can be added?
anyway for me i also like to have space and be sure its more than enough.
Yeah, OpenVPN is relatively lightweight, uses very little memory per connection.