Stopping the agent: Reason = sig.kill in cloudstack kvm agent - kvm

I work with cloudstack4.9.2.0, have add a kvm host, the agent has started but it always crashed with log message:
[cloud.agent.Agent] (AgentShutdownThread:null) (logid:) Stopping the agent: Reason = sig.kill
and there is no more useful error message.
But when I use dmesg, I see these:
[18343.770338] libvirtd[5320]: segfault at 7fd34826c313 ip 00007fd34826c313 sp 00007fd343deacf0 error 14 in libnss_sss.so.2[7fd349a0f000+8000]
[18493.759889] libvirtd[10687]: segfault at 7f2d3ad17313 ip 00007f2d3ad17313 sp 00007f2d5016bcf0 error 14
[18642.749523] libvirtd[16073]: segfault at 7f098e654313 ip 00007f098e654313 sp 00007f09a4114cf0 error 14 in libnss_sss.so.2[7f098fdf7000+8000]
[18792.739096] libvirtd[21469]: segfault at 7f374ed17313 ip 00007f374ed17313 sp 00007f374e8dccf0 error 14
[18926.729704] libvirtd[26724]: segfault at 7fbaf62a9313 ip 00007fbaf62a9313 sp 00007fbaf5e6ecf0 error 14
does anyone know what is going on?

Looks like agent is being killed for some reason.
Can you check if Kvm host is able to access 8250 port of cloudstack server ?

Related

Dcm4chee Connection to ldap://ldap:389 broken - reconnect error

I'm using dcm4chee docker stack with ldap and postgreSQL and have a floating error:
ldap:389; socket closed; remaining name 'cn=Devices,cn=DICOM Configuration,dc=mdw,dc=io'
2018-07-13 06:30:42,089 INFO [org.dcm4che3.conf.ldap.ReconnectDirContext] (Thread-0 (ActiveMQ-client-global-threads)) Connection to ldap://ldap:389 broken - reconnect
All three services are running on the same host. What can I do to avoid that error?
Disable the firewall. If firewall was enabled add an exception for all 3 services.

Apache crashes with Parent: child process exited with status 3221226356

Apache crashes and I get the following error in the apache log:
AH00428: Parent: child process exited with status 3221226356 -- Restarting.
Backtrace:
Count: 2
Exception #: 0XC0000008
Stack:
ntdll!KiRaiseUserExceptionDispatcher+0x3a
KERNELBASE!CloseHandle+0x1b
libapr_1!apr_shm_size_get+0x27d
libapr_1!apr_shm_destroy+0x12
mod_socache_shmcb+0x161c
mod_ssl!ssl_run_proxy_post_handshake+0x8d12
mod_ssl!ssl_run_pre_handshake+0x3d97
libapr_1!apr_pool_clear+0x6e
httpd!OPENSSL_Applink+0xcef
httpd!OPENSSL_Applink+0x1f98
KERNEL32!BaseThreadInitThunk+0x22
ntdll!RtlUserThreadStart+0x34
Seems to have to do with mod_ssl. I do have a http proxy set up in a https virtual host. However, the same error appears in the Apache log even if I comment out the proxy portion of the config file. This error also tends to be followed by a couple of MySQL errors in the Windows application log complaining about a lost connection. I think that might just be because Apache crashed while the connections were open. I am using the latest versions of Apache 2.4.20, PHP 7.0.8, and MySQL 5.7. Any ideas? Thanks!

How can I change which address Datastax agent will try to connect to?

My Cassandra instances are not listening on 127.0.0.1. When I start datastax-agent I find this in logs:
# tail -n 100 /var/log/datastax-agent/agent.log
...
ERROR [Initialization] 2015-05-19 22:35:04,064 Can't connect to Cassandra, retrying soon.
com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /127.0.0.1:9042 (com.datastax.driver.core.TransportException: [/127.0.0.1:9042] Cannot connect))
at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:220)
at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:78)
at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1231)
at com.datastax.driver.core.Cluster.init(Cluster.java:158)
at com.datastax.driver.core.Cluster.connect(Cluster.java:246)
at clojurewerkz.cassaforte.client$connect_or_close.doInvoke(client.clj:149)
at clojure.lang.RestFn.invoke(RestFn.java:410)
at clojurewerkz.cassaforte.client$connect.invoke(client.clj:165)
at opsagent.cassandra$setup_cassandra$fn__8157.invoke(cassandra.clj:344)
at again.core$with_retries_STAR_$fn__8013.invoke(core.clj:98)
at again.core$with_retries_STAR_.invoke(core.clj:97)
at opsagent.cassandra$setup_cassandra.invoke(cassandra.clj:339)
at opsagent.opsagent$setup_cassandra.invoke(opsagent.clj:153)
at opsagent.jmx$determine_ip.invoke(jmx.clj:276)
at opsagent.jmx$setup_jmx$fn__8438.invoke(jmx.clj:293)
at clojure.lang.AFn.run(AFn.java:24)
at java.lang.Thread.run(Thread.java:745)
How can I change which address the Datastax Agent connects to? I have tried setting local_interface in the agent's address.yaml (and restarting agent), but that doesn't seem to work.
The secret was to set rpc_address to 0.0.0.0. Cred to LHWizard for pointing this out.

configure Zend server CE if a machine doesn't support ipv6

I have installed latest Zend Server CE in my notebook (it has Win 7 installed) and then
I installed it on my desktop machine. But when you start server controller there is an alert saying Connection refused (or timed out)
What's the problem?
When I start server http://localhost:10081/ZendServer/
the following message appears
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, admin#example.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.
and apache works well in the following address http://localhost:81
when i telnet localhost 10081 there is a reply !!!
I found from the inet http://forums.zend.com/viewtopic.php?f=8&t=7518 that it's because of not having ipv6 support, I am running windows xp3 on my desktop
how to disable default ipv6 support in Zend conf?
how to fix this problem or should I switch to win 7 (my desktop)?
Thanks in advance!
I had a similar problem, on Debian Squeeze after an upgrade to the currently latest version of Zend from the zend apt repo, [deb http://repos.zend.com/zend-server/deb server non-free] . The Zend gui fails.
zend-server-ce-php-5.3 5.5.0+b63
Log in /usr/local/zend/gui/lighttpd/logs/php.log throws this exception.
[10-Jan-2012 11:20:03] PHP Fatal error: Uncaught exception 'Exception' with message 'Unknown application version' in /usr/local/zend/gui/application/CheckDependencies.php:28
Stack trace:
#0 /usr/local/zend/gui/html/index.php(16): CheckDependencies::getChecker('INSTALLATION_PL...')
#1 {main}
thrown in /usr/local/zend/gui/application/CheckDependencies.php on line 28
The problem is the zend-server.ini file in /usr/local/zend/gui/application/data/zend-server.ini But after doing the changes shown below it seems to work ok again.
--- zend-server.ini 2012-01-05 16:45:29.000000000 +0100
+++ zend-server.ini 2012-01-10 12:01:37.000000000 +0100
## -3,7 +3,7 ##
[zendServer]
version = 5.6.0
-edition = INSTALLATION_PLACEHOLDER_GUI_EDITION
+edition = CE
devEnv=0
This is Zend's default error message, meaning you have some error in the php script you are running. By default, your php.ini file in Zend is configured to report errors, but not specifically state what errors had occurred, which makes this case hard to diagnose. My recommendation is that if you are using this server for debugging purposes, go to your Zend php.ini file (typically C:\Program Files\Zend\ZendServer\etc) and search for "display_errors" and change its default value from "Off" to "On". This will allow you to see the specific error PHP is encountering rather than getting the generic Zend error message.

apache mod_proxy error os10060 and returning 503?

Can't get to my site. Apache gives the following error message:
[Fri Sep 05 08:47:42 2008] [error] (OS 10060)A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. : proxy: HTTP: attempt to connect to 10.10.10.1:80 (10.10.10.1) failed
Can you connect to the proxied host (10.10.10.1) directly? Is it functioning normally?
http://www.checkupdown.com/status/E503.html
Your Web server is effectively 'closed for repair'. It is still functioning minimally because it can at least respond with a 503 status code, but full service is impossible i.e. your Web site is simply unavailable. There are a myriad possible reasons for this, but generally it is because of some human intervention by the operators of your Web server machine. You can usually expect that someone is working on the problem, and normal service will resume as soon as possible.
You need to restart the webserver then figure out why it shut it self down.