Hello Rudic,
CPU is 100% and server is not accessible via ssh in normal boot mode.
The problem started after nfs installation. I received a warning message from authorities emphasizing that nfs usage has some risks as attackers could sniff the system via udp ports. Not sure about that. Company replaced the motherboard in the morning which did not solve the issue. After an eight hours of intervention process they said, server is under attack.
I am still not sure about that so I am planning to edit my settings in rescue mode.
Regarding system disk details:
Kind regards
Boris
Last edited by baris35; 06-28-2019 at 06:06 PM..
Reason: requested info added
Hello!
I need to write partitioning script wich would work in rescue mode. It will prepare partitions and unpack linux on it. However I need to calculate whole size of the disk and create:
/dev/sda1 --> One big partition (minus (2*size of memory) for swap)
/dev/sda2 --> Swap partition... (1 Reply)
I was runing suse 10.2 and windows ,i had installed windows on a separate 40 gb hard disk and linux on a 160 gb disk which it shrunk and left some 60 gb which were readable in windows.
Due to the fact that i store alot of data in the windows partions i used all the extra 60gb which where readable... (2 Replies)
Hi all,
I am running xen virtual machine on centos 5 and xen gust o.s is centos.
I cannot boot my xen vm machine it saying cannot find /bin/sh to execute.
I want to go to rescue mode of my xen vm machine.
I know how to do on actual physical machine but how i can enter in rescue mode of... (1 Reply)
Hi all,
I am running xen virtual machine on centos 5 and xen gust o.s is centos.
I cannot boot my xen vm machine it saying cannot find /bin/sh to execute.
I want to go to rescue mode of my xen vm machine.
I know how to do on actual physical machine but how i can enter in rescue mode of... (6 Replies)
Hi all,
When using netcat to transfer the data over socket, if no connection is established, how long will netcat keep the data; will it discard the "oldest" data ?
Say for example I use "Some Command | netcat -l -p port", the command I use will generate a lot of output constantly, while no... (2 Replies)
Hi,
I'm trying to resize an ext3 FS (filesystem) under an LVM.
I have booted the OS (RHEL 4) in rescue mode using the CD media and I'm able to use lvm commands.
Now, I'm trying to shrink the filesystem before actually shrinking the logical volume but I cannot find ext2onlone or resize2fs... (1 Reply)
I accidently deleted fstab file from one of the compute nodes of the cluster (RHEL 5.3). Due to this no filesystem/directory is mounted on the system during bootup. I started system in rescue mode but it says You don't have any linux partitions. Press return to get a shell. The system will reboot... (2 Replies)
How to get cpanel backup data in rescue mode?
Server OS 6.3 minimal with cPanel
/dev/sdb1 is main partition
root@rescue ~ # fdisk -l
Anyone can help
Thank you (0 Replies)
Discussion started by: jaydul
0 Replies
LEARN ABOUT MINIX
tc-cgroup
Cgroup classifier in tc(8) Linux Cgroup classifier in tc(8)NAME
cgroup - control group based traffic control filter
SYNOPSIS
tc filter ... cgroup [ match EMATCH_TREE ] [ action ACTION_SPEC ]
DESCRIPTION
This filter serves as a hint to tc that the assigned class ID of the net_cls control group the process the packet originates from belongs
to should be used for classification. Obviously, it is useful for locally generated packets only.
OPTIONS
action ACTION_SPEC
Apply an action from the generic actions framework on matching packets.
match EMATCH_TREE
Match packets using the extended match infrastructure. See tc-ematch(8) for a detailed description of the allowed syntax in
EMATCH_TREE.
EXAMPLES
In order to use this filter, a net_cls control group has to be created first and class as well as process ID(s) assigned to it. The follow-
ing creates a net_cls cgroup named "foobar":
modprobe cls_cgroup
mkdir /sys/fs/cgroup/net_cls
mount -t cgroup -onet_cls net_cls /sys/fs/cgroup/net_cls
mkdir /sys/fs/cgroup/net_cls/foobar
To assign a class ID to the created cgroup, a file named net_cls.classid has to be created which contains the class ID to be assigned as a
hexadecimal, 64bit wide number. The upper 32bits are reserved for the major handle, the remaining hold the minor. So a class ID of e.g.
ff:be has to be written like so: 0xff00be (leading zeroes may be omitted). To continue the above example, the following assigns class ID
1:2 to foobar cgroup:
echo 0x10002 > /sys/fs/cgroup/net_cls/foobar/net_cls.classid
Finally some PIDs can be assigned to the given cgroup:
echo 1234 > /sys/fs/cgroup/net_cls/foobar/tasks
echo 5678 > /sys/fs/cgroup/net_cls/foobar/tasks
Now by simply attaching a cgroup filter to a qdisc makes packets from PIDs 1234 and 5678 be pushed into class 1:2.
SEE ALSO tc(8), tc-ematch(8),
the file Documentation/cgroups/net_cls.txt of the Linux kernel tree
iproute2 21 Oct 2015 Cgroup classifier in tc(8)