I am trying to move my organisation from Centos7 to Centos8 and Rocky linux which have network manager. Due to the multi-homed system I am trying to setup scriping to autoconnect since out of the box NM loses connectivity but I am a bit stuck.
If I try to run For example
nmcli c modify ens3 "IP4.DNS[0]" "8.8.8.8"
I get the Error: invalid or not allowed setting 'IP4': 'IP4' not among [connection, 802-3-ethernet (ethernet), 802-1x, dcb, sriov, ethtool, match, ipv4, ipv6, hostname, tc, proxy]. From what I understand NM is unable to modify these settings but I not understand why, or who set them up. I suspect it is somewhere in cloud init or in the dhcp-reply ??
nmcli connection show ens3 | grep IP4
IP4.ADDRESS[1]:136.ZZ.XX.XXX/23
IP4.GATEWAY:136.ZZ.YY.YY
...
IP4.DOMAIN[1]:openstacklocal
[root#chkorocky syck]# nmcli c show ens3 | grep ipv4
ipv4.method: auto
ipv4.dns: --
ipv4.dns-search: --
ipv4.addresses: --
ipv4.gateway: --
Is there anyway to understand where these extra attributes come from? Somehow ipv4.XX do not get set up at all but instead other variables with similar names allow NM to work ?
I follow the instructions to bootstrap a new Ceph (I'm new to Ceph) cluster.
I got the following error:
sudo cephadm bootstrap --mon-ip <mon-ip>
INFO:cephadm:Verifying podman|docker is present...
INFO:cephadm:Verifying lvm2 is present...
INFO:cephadm:Verifying time synchronization is in place...
INFO:cephadm:Unit systemd-timesyncd.service is enabled and running
INFO:cephadm:Repeating the final host check...
INFO:cephadm:podman|docker (/usr/bin/podman) is present
INFO:cephadm:systemctl is present
INFO:cephadm:lvcreate is present
INFO:cephadm:Unit systemd-timesyncd.service is enabled and running
INFO:cephadm:Host looks OK
INFO:root:Cluster fsid: e08484be-72c1-11ea-a13e-0050563f093a
INFO:cephadm:Verifying IP *<mon-ip>* port 3300 ...
INFO:cephadm:Verifying IP *<mon-ip>* port 6789 ...
ERROR: Failed to infer CIDR network for mon ip *<mon-ip>*; pass --skip-mon-network to configure it later
What does it mean ? How to fix it ?
cephadm is still fairly new. I've tracked a few days ago in:
https://tracker.ceph.com/issues/44828
Please run
ceph config set mon public_network <mon_network>
after bootstrap finished.
Is this the exact command you ran?
sudo cephadm bootstrap --mon-ip *<mon-ip>*
If so you actually need to replace *<mon-ip>* with the actual IP address that you want the monitor daemon to listen on.
For future reference, on that page, any command you see that has a variable surrounded by asterisks is something you would need to replace with an address/host/hostname etc. that applies to your environment.
Highlights:
windows 10 host machine
ubuntu vagrant box (virtualbox) as guest vm
using vagrant port forwarding as like this: config.vm.network "forwarded_port", guest: 1234, host: 12340
IDE: IntelliJ IDEA with Ruby plugin
The Issue:
I've tried to set up remote ruby debug following this guide and getting an error in IDE: "failed to find free socket port for process dispatcher". It looks this issue is not IntelliJ-specific, I was able to reproduce it with latest RubyMine as well.
From IDEA's log
2017-07-07 21:53:03,515 [8879188] INFO - tion.impl.ExecutionManagerImpl - Failed to find free socket port for process dispatcher
com.intellij.execution.ExecutionException: Failed to find free socket port for process dispatcher
at org.jetbrains.plugins.ruby.ruby.debugger.RubyProcessDispatcher.<init>(RubyProcessDispatcher.java:46)
at org.jetbrains.plugins.ruby.ruby.debugger.RubyRemoteDebugRunner.doExecute(RubyRemoteDebugRunner.java:62)
...
Caused by: java.net.BindException: Address already in use: JVM_Bind
at java.net.TwoStacksPlainSocketImpl.socketBind(Native Method)
at java.net.TwoStacksPlainSocketImpl.socketBind(TwoStacksPlainSocketImpl.java:137)
...
I can understand it says Address already in use: JVM_Bind, but how remote debug supposed to work at all then? (I mean Is there any way to access guest vm port not forwarding it before? Clearly no) Any help to solve this issue is much appreciated.
For me the issue was due to another debug session that was open in the background. To prevent that from happening again (and also close all other currently open sessions, once you run the configuration again) select "Single instance only" in the Debug Configuration:
I am trying to configure a two node cluster with cassandra in windows r2 2008
So i installed cassandra community version in one server (10.xxx.0.1,10.xxx.0.2)
And then I stopped the service and then edited the configuraton.yaml file in the conf folder.
The changes are:
cluster_name
commented the num_tokens
gave the tokens in initial_token,
seeds as 10.xxx.0.1,10.xxx.0.2,
listen_addresses are their respective ip addresses which are 10.xxx.0.1,10.xxx.0.2,
rpc_addresses as 0.0.0.0,
endpointsnitch as gossip
I also changed the cassandra rackdc.properties file to dc=DC1 rack=RAC1.
I then saved and started back the service and opened the cqlsh, but it is not connecting. Below is the error:
2015-10-12 16:20:13 Commons Daemon procrun stderr initialized
If rpc_address is set to a wildcard address (0.0.0.0), then you must set broadcast_rpc_address to a value other than 0.0.0.0
Fatal configuration error; unable to start. See log for stacktrace.
..
ERROR 21:20:14 Fatal configuration error
org.apache.cassandra.exceptions.ConfigurationException: If rpc_address is set to a wildcard address (0.0.0.0), then you must set broadcast_rpc_address to a value other than 0.0.0.0
at org.apache.cassandra.config.DatabaseDescriptor.applyAddressConfig(DatabaseDescriptor.java:285) ~[apache-cassandra-2.1.10.jar:2.1.10]
at org.apache.cassandra.config.DatabaseDescriptor.applyConfig(DatabaseDescriptor.java:443) ~[apache-cassandra-2.1.10.jar:2.1.10]
at org.apache.cassandra.config.DatabaseDescriptor.<clinit>(DatabaseDescriptor.java:136) ~[apache-cassandra-2.1.10.jar:2.1.10]
at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:168) [apache-cassandra-2.1.10.jar:2.1.10]
at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:562) [apache-cassandra-2.1.10.jar:2.1.10]
at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:651) [apache-cassandra-2.1.10.jar:2.1.10]
If you out 0.0.0.0 to the rpc_address you have to change the broadcast_rpc_address like in http://docs.datastax.com/en/cassandra/2.1/cassandra/configuration/configCassandra_yaml_r.html , I think that the right broadcast_rpc_address can be the own ip address.
this is my first post so I will try to be as descriptive as possible. Please let me know if there is anything missing:
So I am trying to install Oracle Express 11g, after I download the zip file "OracleXE112_Win32" - I unzip it, and open Disk 1 then setup. I go through the entire installation process without any problems. However when I go to open "Get Started" I come across the following error:
"Windows cannot find 'http:/.127.0.0.1:%HTTPPORT%/apex/f?p=4950'. Make sure you typed the name correctly, and then try again. -- After googling this, I was told to change %HTTPPORT% to 8080.
If I do this when I click on "Get Started" the following error shows up:
"Firefox can' establish a connection to the server at 127.0.0.1:8080."
I need this to work, so that I can sooner or later connect this to my eclipse, so that I can start doing my homework for my Java Programming class. Any help is greatly appreciated, thank you so much!
I have found one solution for this problem. In order to explain my solution, I have used some aliases referring to my real parameters. These are:
[ME] = my user name
[MYHOST] = my current workstation hostname (netbios name as well)
[MYHOST.mycompany.com] = my worksation's fully qualified domain name
At the beginning I had the same situation as mentioned above: I was unable to connect to the apex service even after successful installation.
First I have used the tnsping oracle utility:
C:\Users\ME>tnsping MYHOST
This was the answer:
TNS Ping Utility for 32-bit Windows: Version 11.2.0.2.0 - Production
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\oraclexe\app\oracle\product\11.2.0\server\network\admin\sqlnet.ora
Used HOSTNAME adapter to resolve the alias
Attempting to contact (DESCRIPTION=(CONNECT_DATA=(SERVICE_NAME=))(ADDRESS=
(PROTOCOL=TCP)(HOST=fe80::5d34:78a:5862:64%20)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=fe80::c27:54a4:1600:86a4%26)(PORT=1521))(ADDRESS=
(PROTOCOL=TCP)(HOST=fe80::38ab:cdb4:dd77:7ed9%12)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)
(HOST=10.9.32.208)(PORT=1521))(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.56.1)(PORT=1521))
(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.1.106)(PORT=1521)))
TNS-12541: TNS:no listener
You see above a lot of currently active different IP addresses. Only the most important 127.0.0.1 is missing. I work on notebook so the network is "almost always" changing (WLAN, 3G, HSDPA, Ethernet etc.) only the localhost is fixed. And that was the real case of the trouble. (When I was working at the office environment connected to the office network it was also working.)
When I was in this situation I also started to use the lsnrctl oracle utility.
I have seen the following:
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Production
Default Service XE
Listener Parameter File /oraclexe/app/oracle/product/11.2.0/server\network\admin\listener.ora
Listener Log File C:\oraclexe\app\oracle\diag\tnslsnr\MYHOST\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=MYHOST.mycompany.com)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
You can see that the service for the apex at 8080 port is missing !!!
I have tried also the normal ping which worked perfectly:
C:\Users\ME>ping MYHOST.mycompany.com
The result was:
MYHOST.mycompany.com [fe80::c27:54a4:1600:86a4%26] ping
response fe80::c27:54a4:1600:86a4%26: time<10 ms
...
You can realize the IPv6 address also exists in my tnsping trial as well.
So I have decided to define MYHOST in my local hosts file directly:
127.0.0.1 localhost MYHOST MYHOST.mycompany.com
Testing now with ping:
C:\Users\ME>ping MYHOST
And the answer:
MYHOST.mycompany.com [127.0.0.1] ping:
response 127.0.0.1: byte=32 time<10 ms. TTL=128
...
At this point I have restarted (stopped and started again) the both running Oracle services (just for sure):
OracleServiceXE
OracleXETNSListener
And look the miracle:
C:\Users\ME>lsnrctl
LSNRCTL for 32-bit Windows: Version 11.2.0.2.0 - Production
LSNRCTL> status
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.2.0 - Production
Default Service XE
Listener Parameter File /oraclexe/app/oracle/product/11.2.0/server\network\admin\listener.ora
Listener Log File C:\oraclexe\app\oracle\diag\tnslsnr\MYHOST\listener\alert\log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC1ipc)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=MYHOST.mycompany.com)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=MYHOST.mycompany.com)(PORT=8080))(Presentation=HTTP)(Session=RAW))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "XEXDB" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
Service "xe" has 1 instance(s).
Instance "xe", status READY, has 1 handler(s) for this service...
The command completed successfully
LSNRCTL>
You can see the important line with PORT=8080 and service XE instance.
So I am happy the getting started URL is working again.
What browser are you using? I experienced the same issue with Chrome. Download firefox, Right click the "Get Started With Oracle Database 11g Express Edition" icon and change the "opens with" option to firefox.
Simple solution:
You need to directly tell where your http port is. To do so; open up the folder where your Oracle is stored and navigate to server folder( in my case C:\Oracle\oraclexe\app\oracle\product\11.2.0\server) in that folder right click to Get_Started file and choose properties. There you can hand type your http port which is usually 8080 in my case: ....127.0.0.1:8080/apex/f?p=4950
The problem should be solved.
Hope this helps you get through it..
Pinar U.S.
Right Click on the "Get Started" icon and click on the properties and select General tab. Click on change button and select other browser installed in your system other than the current one . after setting this up, you'll be able to open the panel.
I also experienced the same problem for this go to start-> all programs -> Oracle Database 11g Express Edition and right click on get started and click open file location and drag and drop the "Get_Started" to your browser
Ok, I found the solution. Right click on icon of "Get Started With Oracle Database 11g Express Edition", then "properties". Then click "General tab" and then you will see option "change", click on that and then select your browser, click "apply" and "ok". And then start the Database again.
Drag and drop get started link into browser address bar worked great for me, I tried EVERYTHING else, adding port to hosts, changing port in properties etc. nothing worked, until I dragged and dropped... So damn simple, wish I did that hours ago
Your solution is partially correct buddy. You need to match the entries in the file:
C:\oraclexe\app\oracle\product\11.2.0\server\network\ADMIN\listener.ora
(the entries with the --> mark)
:
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
--> (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
--> (ADDRESS = (PROTOCOL = TCP)(HOST = myserver.company.com)(PORT = 1521))
)
)
:
With the entries in the file:
C:\Windows\System32\drivers\etc\hosts
(the entries with the --> mark)
:
--> 127.0.0.1 localhost
--> 1.2.3.4 myserver myserver.company.com
:
Finally, under Administrator account do:
C:> lsnrctl stop
C:> lsnrctl start
Solved. No need for changing name, no drag & drop either.