Crazy_Bash's questions

I would like to install bonding with 4 links with mode 4. but only "download/receiving" works with bondig. for transmitting the system chooses one link.

ifconfig

bond0     Link encap:Ethernet  HWaddr 90:E2:BA:0F:76:B4
          inet addr:ip  Bcast:ip  Mask:255.255.255.248
          inet6 addr: fe80::92e2:baff:fe0f:76b4/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:239187413 errors:0 dropped:10944 overruns:0 frame:0
          TX packets:536902370 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:14688536197 (13.6 GiB)  TX bytes:799521192901 (744.6 GiB)

eth2      Link encap:Ethernet  HWaddr 90:E2:BA:0F:76:B4
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:54969488 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2537 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3374778591 (3.1 GiB)  TX bytes:314290 (306.9 KiB)

eth3      Link encap:Ethernet  HWaddr 90:E2:BA:0F:76:B4
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:64935805 errors:0 dropped:1 overruns:0 frame:0
          TX packets:2532 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3993499746 (3.7 GiB)  TX bytes:313968 (306.6 KiB)

eth4      Link encap:Ethernet  HWaddr 90:E2:BA:0F:76:B4
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:57352105 errors:0 dropped:2 overruns:0 frame:0
          TX packets:536894778 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3524236530 (3.2 GiB)  TX bytes:799520265627 (744.6 GiB)

eth5      Link encap:Ethernet  HWaddr 90:E2:BA:0F:76:B4
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:61930025 errors:0 dropped:3 overruns:0 frame:0
          TX packets:2540 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:3796021948 (3.5 GiB)  TX bytes:314274 (306.9 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:62 errors:0 dropped:0 overruns:0 frame:0
          TX packets:62 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:5320 (5.1 KiB)  TX bytes:5320 (5.1 KiB)

those are my configs:

DEVICE="eth2"
BOOTPROTO="none"
MASTER=bond0
SLAVE=yes
USERCTL=no
NM_CONTROLLED="no"
ONBOOT="yes"


DEVICE="eth3"
BOOTPROTO="none"
MASTER=bond0
SLAVE=yes
USERCTL=no
NM_CONTROLLED="no"
ONBOOT="yes"



DEVICE="eth4"
BOOTPROTO="none"
MASTER=bond0
SLAVE=yes
USERCTL=no
NM_CONTROLLED="no"
ONBOOT="yes"


DEVICE="eth5"
BOOTPROTO="none"
MASTER=bond0
SLAVE=yes
USERCTL=no
NM_CONTROLLED="no"
ONBOOT="yes"

DEVICE=bond0
IPADDR=<ip>
BROADCAST=<ip>
NETWORK=<ip>
GATEWAY=<ip>
NETMASK=<ip>
USERCTL=no
BOOTPROTO=none
ONBOOT=yes
NM_CONTROLLED=no

cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: IEEE 802.3ad Dynamic link aggregation
Transmit Hash Policy: layer2 (0)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

802.3ad info
LACP rate: slow
Aggregator selection policy (ad_select): stable
Active Aggregator Info:
        Aggregator ID: 1
        Number of ports: 4
        Actor Key: 17
        Partner Key: 11
        Partner Mac Address: 00:24:51:12:63:00

Slave Interface: eth2
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:76:b4
Aggregator ID: 1
Slave queue ID: 0

Slave Interface: eth3
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:76:b5
Aggregator ID: 1
Slave queue ID: 0

Slave Interface: eth4
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:76:b6
Aggregator ID: 1
Slave queue ID: 0

Slave Interface: eth5
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 90:e2:ba:0f:76:b7
Aggregator ID: 1
Slave queue ID: 0

/etc/modprobe.d/bonding.conf

alias bond0 bonding
options bond0 mode=4 miimon=100 updelay=200
#downdelay=200 xmit_hash_policy=layer3+4 lacp_rate=1

Linux:

Linux 3.0.0+ #1 SMP Fri Oct 26 07:55:47 EEST 2012 x86_64 x86_64 x86_64 GNU/Linux

what i've tried:

downdelay=200 xmit_hash_policy=layer3+4 lacp_rate=1

mode 6

I can't find a way to create a filesystem on one of my disks.

first i'm geting the following output:

[root@~]# mkfs.xfs /dev/sdb1
mkfs.xfs: /dev/sdb1 appears to contain a partition table (dos).
mkfs.xfs: Use the -f option to force overwrite.

after using -F flag:

[root@~]# mkfs.xfs -f /dev/sdb1
meta-data=/dev/sdb1              isize=256    agcount=32, agsize=22892696 blks
         =                       sectsz=512   attr=2
data     =                       bsize=4096   blocks=732566272, imaxpct=5
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0
log      =internal log           bsize=4096   blocks=357698, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
**mkfs.xfs: libxfs_device_zero write failed: Input/output error**

/dev/sdb:

Disk /dev/sdb: 3001GB
 1      1049kB  3001GB  3001GB               primary

Linux:

Centos 6.3 Linux 1 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

what i've tried so far: recreating partition with parted rm 1

I need to change selinux to "permissive mode" on a production server without a reboot, but setenforce wont let me do it(as a root), it always prints "setenforce: SELinux is disabled" What i'm doing wrong?

[root@server3 ~]# setenforce 0
setenforce: SELinux is disabled
[root@server3 ~]# setenforce 1
setenforce: SELinux is disabled
[root@server3 ~]# setenforce Permissive
setenforce: SELinux is disabled
[root@server3 ~]# getenforce
Disabled

Can't find a way to install sphinx. It's asking for libmysqlclient.so.15, which I have... What else can i do?

This is what I've tried already

[root@server1 ~]# rpm -ivh sphinx-2.0.3-1.el5.x86_64.rpm
error: Failed dependencies:
        libmysqlclient.so.15()(64bit) is needed by sphinx-2.0.3-1.rhel5.x86_64
        libmysqlclient.so.15(libmysqlclient_15)(64bit) is needed by sphinx-2.0.3-1.rhel5.x86_64

[root@server3 hooks]# ls -l /usr/lib64/libmysqlclient.so*
lrwxrwxrwx 1 root root      20 Jun 29 09:57 /usr/lib64/libmysqlclient.so -> libmysqlclient.so.18
-rwxr-xr-x 1 root root 1474856 Dec 24 01:37 /usr/lib64/libmysqlclient.so.15
lrwxrwxrwx 1 root root      24 Jun 29 09:57 /usr/lib64/libmysqlclient.so.18 -> libmysqlclient.so.18.0.0
-rwxr-xr-x 1 root root 6853576 May 11  2011 /usr/lib64/libmysqlclient.so.18.0.0
[root@server3 hooks]# ls -l /usr/lib/libmysqlclient.so*
lrwxrwxrwx 1 root root 28 Jan 12  2010 /usr/lib/libmysqlclient.so -> /usr/lib64/libmysqlclient.so
lrwxrwxrwx 1 root root 26 Dec 24 12:18 /usr/lib/libmysqlclient.so.15 -> /usr/lib/libmysqlclient.so
lrwxrwxrwx 1 root root 20 Dec 24 12:22 /usr/lib/libmysqlclient.so.18 -> libmysqlclient.so.15

I'm using the following command to check how many connections I have from a single ip

netstat -anp |grep ':80' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

If it's DDOS attack(500+ connections), it's easy to detect. But I still have at any given time 60-100 connections from single Ip. Can it be a Human or it's some sort of bots/spiders?

This is what i have at the moment(top 6).

48 217.212.230.***
54 46.63.105.***
55 62.235.175.***
56 79.235.188.***
60 178.27.93.***
63 31.16.96.***