I realize there might not be a direct answer to this question, but I am wondering if there are any communicated expectations of when this will happen or if anyone can comment on the challenges involved. I understand for instance yum is a major dependency on 2.6, but curious in what ways 2.7 is incompatible.
I'm using Ubuntu 10.04.4 LTS to host KVM virtual machines. I'm using eucalyptus to manage them and having a lot of issues with libvirt not being able to interface with the KVM components and timing out. This is causing Eucalyptus to think the instances are dead.
Noticing a lot of these messages in the kern.log. Can anyone help me determine what these mean?
May 5 03:57:03 [host] kernel: [3638726.030567] INFO: task parted:24773 blocked for more than 120 seconds.
May 5 03:57:03 [host] kernel: [3638726.030828] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
May 5 03:57:03 [host] kernel: [3638726.042960] parted D 00000000ffffffff 0 24773 24772 0x00000000
May 5 03:57:03 [host] kernel: [3638726.042969] ffff880e119add28 0000000000000082 0000000000015f00 0000000000015f00
May 5 03:57:03 [host] kernel: [3638726.042976] ffff8815d00c9ad0 ffff880e119adfd8 0000000000015f00 ffff8815d00c9700
May 5 03:57:03 [host] kernel: [3638726.042983] 0000000000015f00 ffff880e119adfd8 0000000000015f00 ffff8815d00c9ad0
May 5 03:57:03 [host] kernel: [3638726.042990] Call Trace:
May 5 03:57:03 [host] kernel: [3638726.043004] [<ffffffff8155866d>] schedule_timeout+0x22d/0x300
May 5 03:57:03 [host] kernel: [3638726.043012] [<ffffffff81100a45>] ? pagevec_lookup_tag+0x25/0x40
May 5 03:57:03 [host] kernel: [3638726.043017] [<ffffffff810ff8af>] ? write_cache_pages+0xef/0x3e0
May 5 03:57:03 [host] kernel: [3638726.043023] [<ffffffff810fe800>] ? __writepage+0x0/0x40
May 5 03:57:03 [host] kernel: [3638726.043026] [<ffffffff815577e6>] wait_for_common+0xd6/0x180
May 5 03:57:03 [host] kernel: [3638726.043031] [<ffffffff8105dd7b>] ? try_to_wake_up+0x2fb/0x480
May 5 03:57:03 [host] kernel: [3638726.043035] [<ffffffff8105df00>] ? default_wake_function+0x0/0x20
May 5 03:57:03 [host] kernel: [3638726.043039] [<ffffffff8155794d>] wait_for_completion+0x1d/0x20
May 5 03:57:03 [host] kernel: [3638726.043047] [<ffffffff81169361>] writeback_inodes_sb+0xb1/0xe0
May 5 03:57:03 [host] kernel: [3638726.043052] [<ffffffff8116e09e>] __sync_filesystem+0x3e/0x90
May 5 03:57:03 [host] kernel: [3638726.043056] [<ffffffff8116e1c9>] sync_filesystems+0xd9/0x130
May 5 03:57:03 [host] kernel: [3638726.043061] [<ffffffff8116e277>] sys_sync+0x17/0x40
May 5 03:57:03 [host] kernel: [3638726.043068] [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
Running
libvirt-bin 0.7.5-5ubuntu27.22
qemu-kvm 0.12.3+noroms-0ubuntu9.18
Just had snmpd segfault on an Ubuntu 10.04 LTS box. snmpd has been running on this system for some time (weeks). There has been a reasonable amount of load, but nothing too extreme for the system.
snmpd[1185]: segfault at 0 ip 00007fab8a626167 sp 00007fffef80ac80 error 6 in libnetsnmpmibs.so.15.1.2[7fab8a575000+10f000]
Anyone seen this before? Is this a known issue with snmpd? I'm using
snmpd 5.4.2.1~dfsg0ubuntu1-0ubuntu2.1 SNMP (Simple Network Management Protocol)
I'm noticing the following lines in dmesg when an XFS volume is being mounted
dm-1: Disabling barriers, trial barrier write failed
Anyone know what this means?
Using Nginx as a proxy for another HTTP application server. Is there a way to know for every 10 minutes how many connections are being dropped from ngnix to backend and also from front end to ngnix?
Thanks
SNMPd on my CentOS systems is sending log messages to syslog every time it receives a query from my monitoring tools. Is there a way to lower the verbosity of SNMPd? It adds a lot of clutter to the logs.
Sep 12 13:05:40 myhost snmpd[7073]: Received SNMP packet(s) from UDP: [ipaddr]:42874
Sep 12 13:05:40 myhost snmpd[7073]: Connection from UDP: [ipaddr]:49272
Thanks!
Anyone have a good solution for doing checks on iptables to ensure that the appropriate rules are applied (and the service is running)? I am using Zenoss to monitor my environment.
Also, some of the rules in my chain that I want to check block traffic from specific networks, and as my Zenoss monitor is in a trusted network, doing just port monitoring will give false positives. Ideally I need a solution that reads and interprets the iptables process, and also gives some flexibility to an environment when the exact rules in the chain may change.
Thanks
Hi I'm getting this type of message repeatedly from the kernel:
[1697692.076962] possible SYN flooding on port 80. Sending cookies.
Any idea of what this means? It is on an EC2 host if that makes it easier.
Thanks
Should I be broadcasting my SSID from multiple access points that are sharing the SSID and network segment, or should I only broadcast from one?
I have a server running Ubuntu 10.04 that is rebooting several times a day it seems, and I can't figure out why. It doesn't appear to be a graceful reboot either, because some of the services complain about a crash when I look at their logs. I am looking through /var/log/messages and I see a lot of strange kernel statements as follows:
Jul 27 13:28:41 it-admin kernel: [ 5198.213173] r8169: eth0: link up
Jul 27 13:20:38 it-admin kernel: [ 4716.055043] r8169: eth0: link up
Jul 27 13:29:37 it-admin kernel: [ 5253.309017] r8169: eth0: link up
Jul 27 13:30:29 it-admin kernel: [ 5305.593953] r8169: eth0: link up
These are printing out every few seconds as you can see. I've never seen the kernel say this before, so I am wondering if it has something to do with it.
Having a lot of issues with a wireless network with multiple APs sharing the same SSID. I have a tool I use on my android phone (wifianalyzer) that is helpful, but I need a more comprehensive set of diagnostics that would run (preferably) from a windows laptop. Are there any useful open source or free tools for this?
Thanks!
Are there any specialized/preferred tools to repair a filesystem for ext3 (or ext4) other than fsck.ext3, fsck.ext4?
Thanks
I am trying to find some keywords in my /var/log directory, so using
cd /var/log cat * | grep keyword
I find the string is in that directory and see the lines it exists on, but don't know which file it came from. How can I locate the string, and see the file it cat from?
I am sure there are several ways to do this, but is there a tool built into Ubuntu or a recommended way to check the version of any given library you have installed on an ubuntu server?