I have download cassandra via terminal but problem is where are the other folders like data, conf, lib, doc etc.
i can see only some files as shown in figure i.e Click here
where is the other folders ?
By "download cassandra via terminal" and your screenshot, I'll assume that you installed Cassandra via apt-get.
From the Apache Cassandra project Wiki, section on Installation from Debian packages:
The default location of configuration files is /etc/cassandra.
The default location of log and data directories is /var/log/cassandra/ and /var/lib/cassandra.
As for the lib directory, check how your $CASSANDRA_HOME is being set:
$ grep CASSANDRA_HOME /etc/init.d/cassandra
CASSANDRA_HOME=/usr/share/cassandra
$ ls -al /usr/share/cassandra/
total 8312
drwxr-xr-x 3 root root 4096 Dec 13 07:57 .
drwxr-xr-x 372 root root 12288 Nov 28 08:51 ..
-rw-r--r-- 1 root root 5962385 Jun 1 2016 apache-cassandra-3.6.jar
lrwxrwxrwx 1 root root 24 Jun 1 2016 apache-cassandra.jar -> apache-cassandra-3.6.jar
-rw-r--r-- 1 root root 1902216 Jun 1 2016 apache-cassandra-thrift-3.6.jar
-rw-r--r-- 1 root root 875 May 31 2016 cassandra.in.sh
drwxr-xr-x 3 root root 12288 Dec 13 07:57 lib
-rw-r----- 1 root root 82123 Oct 20 2015 metrics-core-2.2.0.jar
-rw-r----- 1 root root 9639 Oct 20 2015 metrics-graphite-2.2.0.jar
-rw-r--r-- 1 root root 509144 Jun 1 2016 stress.jar
Note that Cassandra's lib directory is shown in the middle of the directory listing above.
Related
My issue is pretty simple to explain and I guess hard to solve: I commited the stupidity of installing npm on a cloud based server with Ubuntu 16.04 with Plesk 12.
After reading this article I realized it was too late and after trying to connect to my Plesk GUI got an 403 error.
Also if I execute plesk on the CLI, it shows:
user#server:~$ plesk repair
plesk: command not found
So, I erased Plesk... All my hosted sites on Plesk are reachable with their databases in their URLs or by SSH.
The hosting provider told me there is no way to restore Plesk without losing everything unless I made a backup, but I didn't. Maybe there is an alternative... Do you know it?
Edit: Content of /var/lib/psa/dumps:
user#server:/var/lib/psa/dumps$ ls -lrta
total 5708
drwxr-xr-x 3 root root 4096 ene 4 2017 ..
-rw------- 1 root root 206315 ene 4 2017 mysql.preupgrade.12.0.18-12.0.18.20170104-173632.dump.gz
-rw------- 1 root root 3417 ene 4 2017 mysql.preupgrade.apsc.12.0.18-12.0.18.20170104-173633.dump.gz
-rw------- 1 root root 208481 ene 4 2017 mysql.preupgrade.12.0.18-12.5.30.20170104-174155.dump.gz
-rw------- 1 root root 3002 ene 4 2017 mysql.preupgrade.apsc.12.0.18-12.5.30.20170104-174156.dump.gz
-rw------- 1 root root 220725 ene 23 2017 mysql.preupgrade.12.5.30-12.5.30.20170123-062554.dump.gz
-rw------- 1 root root 3002 ene 23 2017 mysql.preupgrade.apsc.12.5.30-12.5.30.20170123-062556.dump.gz
-rw------- 1 root root 236736 feb 8 06:27 mysql.preupgrade.12.5.30-12.5.30.20170208-062713.dump.gz
-rw------- 1 root root 3003 feb 8 06:27 mysql.preupgrade.apsc.12.5.30-12.5.30.20170208-062715.dump.gz
-rw------- 1 root root 262580 feb 24 06:26 mysql.preupgrade.12.5.30-12.5.30.20170224-062621.dump.gz
-rw------- 1 root root 4603 feb 24 06:26 mysql.preupgrade.apsc.12.5.30-12.5.30.20170224-062623.dump.gz
-rw------- 1 root root 258785 mar 22 06:26 mysql.preupgrade.12.5.30-12.5.30.20170322-062626.dump.gz
-rw------- 1 root root 4898 mar 22 06:26 mysql.preupgrade.apsc.12.5.30-12.5.30.20170322-062627.dump.gz
-rw------- 1 root root 251339 abr 17 06:25 mysql.preupgrade.12.5.30-12.5.30.20170417-062540.dump.gz
-rw------- 1 root root 4899 abr 17 06:25 mysql.preupgrade.apsc.12.5.30-12.5.30.20170417-062543.dump.gz
-rw------- 1 root root 244219 may 16 06:25 mysql.preupgrade.12.5.30-12.5.30.20170516-062533.dump.gz
-rw------- 1 root root 4373 may 16 06:25 mysql.preupgrade.apsc.12.5.30-12.5.30.20170516-062535.dump.gz
-rw------- 1 root root 248044 jun 1 06:25 mysql.preupgrade.12.5.30-12.5.30.20170601-062529.dump.gz
-rw------- 1 root root 4381 jun 1 06:25 mysql.preupgrade.apsc.12.5.30-12.5.30.20170601-062530.dump.gz
-rw------- 1 root root 273341 jul 17 06:25 mysql.preupgrade.12.5.30-12.5.30.20170717-062542.dump.gz
-rw------- 1 root root 4379 jul 17 06:25 mysql.preupgrade.apsc.12.5.30-12.5.30.20170717-062544.dump.gz
-rw------- 1 root root 367277 jul 20 06:26 mysql.daily.dump.8.gz
-rw------- 1 root root 367218 jul 21 06:25 mysql.daily.dump.7.gz
-rw------- 1 root root 368954 jul 22 06:25 mysql.daily.dump.6.gz
-rw------- 1 root root 369279 jul 23 06:25 mysql.daily.dump.5.gz
-rw------- 1 root root 368767 jul 24 06:25 mysql.daily.dump.4.gz
-rw------- 1 root root 369629 jul 25 06:26 mysql.daily.dump.3.gz
-rw------- 1 root root 370169 jul 26 06:25 mysql.daily.dump.2.gz
-rw------- 1 root root 368027 jul 27 06:25 mysql.daily.dump.1.gz
-rw------- 1 root root 368128 jul 28 06:26 mysql.daily.dump.0.gz
drwxr-xr-x 2 psaadm psaadm 4096 jul 29 01:32 .
-rw------- 1 root root 20 jul 29 01:32 mysql.plesk.core.prerm.12.5.30.20170729-013250.dump.gz
First of all, I recommend to change the hosting provider, as their answer is incorrect and it seems, that they don't have much experience with Plesk, nor do they seem to have much knowledge about Plesk.
Second, your statements are a bit unclear, as you state:
although I made a backup
and directly afterwards you stated:
and I didn't
Could you pls. clarify WHAT you did and what you forgot to do?
Third, pls. have a look at => "/var/lib/psa/dumps" and inform us about the possible content.
Fourth, if you have dumps located at "/var/lib/psa/dumps", you will always have the choice to re-install Plesk and to re-import the latest "psa", "mysql" and "horde" - databases from your dumps. How to restore a Plesk database dump is explained at:
=> https://support.plesk.com/hc/en-us/articles/213904125
If you have further Plesk related questions, I recommend a new thread at the official Plesk Community Forum ( => https://talk.plesk.com ) , where experienced Plesk users will help you with Plesk - related questions/issues/errors/problems! ;-)
I was able to connect to my school server via SSH. I had an assignment in which I was supposed to use the touch command to create a new file. Yet it keeps returning permission denied. Others were able to do the same thing. Though why do I keep getting this error?
Below is what was the input from the terminal.
Last login: Tue Aug 23 09:16:18 on ttys000
Dominiks-Air:~ fsociety95$ ssh djaneka1#navajo.dtcc.edu
djaneka1#navajo.dtcc.edu's password:
Last login: Tue Aug 23 09:16:35 2016 from pool-72-94-210-193.phlapa.fios.verizon.net
Navajo is Linux shell server provided to staff, faculty, and students. The
operating system is RedHat Enterprise Linux 5.
Alpine, a Pine replacement, has been provided as a mail client. Run "pine"
at the command prompt.
This server also provides web space to users. Web pages can be stored in
the ~/www directory. This is also accessible by mapping a drive in Windows
to \navajo\homepage. The URL for your homepage is
http://user.dtcc.edu/~username/.
Your home directory is also accessible in Windows by mapping to
\navajo\.
If something appears broken or missing, please email path#dtcc.edu.
Could not chdir to home directory /u/d/j/djaneka1: No such file or directory
-bash-3.2$ touch today
touch: cannot touch `today': Permission denied
-bash-3.2$ pwd
/
-bash-3.2$ touch today
touch: cannot touch `today': Permission denied
-bash-3.2$
Edit: here is the result of ls -al
-bash-3.2$ ls -al
total 204
drwxr-xr-x 25 root root 4096 Aug 22 16:50 .
drwxr-xr-x 25 root root 4096 Aug 22 16:50 ..
-rw-r--r-- 1 root root 0 Aug 3 14:01 .autofsck
-rw-r--r-- 1 root root 0 Jan 30 2009 .autorelabel
-rw------- 1 root root 2050 Aug 3 14:00 .bash_history
drwxr-xr-x 2 root root 4096 May 4 04:14 bin
drwxr-xr-x 4 root root 3072 Aug 3 13:57 boot
drwxr-xr-x 11 root root 4060 Aug 3 14:02 dev
drwxr-xr-x 87 root root 12288 Aug 23 10:05 etc
drwxr-xr-x 3 root root 4096 Oct 1 2009 home
drwxr-xr-x 13 root root 12288 Jun 1 04:09 lib
drwx------ 2 root root 16384 Mar 24 2008 lost+found
drwxr-xr-x 3 root root 4096 Oct 1 2009 media
drwxr-xr-x 2 root root 0 Aug 3 14:02 misc
drwxr-xr-x 4 root root 4096 May 26 2012 mnt
drwxr-xr-x 2 root root 0 Aug 3 14:02 net
drwxr-xr-x 9 root root 4096 Jan 5 2009 nsr
drwxrwxr-x 3 root root 4096 Oct 12 2015 opt
dr-xr-xr-x 219 root root 0 Aug 3 14:01 proc
drwxr-x--- 12 root root 4096 Apr 22 10:06 root
drwxr-xr-x 2 root root 12288 Aug 4 04:02 sbin
drwxr-xr-x 2 root root 4096 Oct 1 2009 selinux
drwxr-xr-x 2 root root 4096 Oct 1 2009 srv
drwxr-xr-x 11 root root 0 Aug 3 14:01 sys
drwxrwxrwt 38 root root 4096 Aug 23 10:07 tmp
drwxr-xr-x 34 root root 4096 Jun 21 08:29 u
drwxr-xr-x 14 root root 4096 Apr 16 2010 usr
drwxr-xr-x 24 root root 4096 Apr 16 2010 var
-rw------- 1 root root 2865 Dec 16 2008 .viminfo
-bash-3.2$
EDIT:
Here is what I see after trying touch today in /home
So to try and create a new document in the root directory you need to be recognised as root. That means using the sudo command.
However for that you would need a password that you may not have. If you do perfect. But in any case I would not recommend adding files to the root directory.
Instead try the following:
cd home
touch today
This should work just fine and answer your question.
Still if you need/want to create today in your root directory try the following
sudo touch today
You will then be prompted for the root password that you can type (if you have it obviously)
In any case I suggest reading this which may be very helpful for you.
I wonder if this was ever truly answered.
If I was looking at it, I would try to see what the system thinks is the home directory of djaneka1, since it may have been setup partway and not completed, leaving stuff owned by root that should have been owned by djaneka1.
If you use the pwd command, and get back the "/" (root) directory there is something wrong with your setup.
The message: Could not chdir to home directory /u/d/j/djaneka1: No such file or directory
tells you it can't find your home directory.
-bash-3.2$ pwd
/
the command "pwd" revealing "/" is just an artifact of the system not being able to find your home directory.
To find what the system thinks is one's home directory,
one can search the file named '/etc/passwd' for one's login name.
I expect this is a possible result if you do that:
$ fgrep 'djaneka1' /etc/passwd
djaneka1:x:1505:1506::/u/d/j/djaneka1:/bin/bash
since it complained that it couldn't find that directory.
This needs to be fixed by someone who has more rights to the system, like root.
there is nothing djaneka1 can do a
please explain me why on x86_64 Scientific Linux no file under /etc/ld.so.conf.d contains the directory /usr/lib64?
The list of directories to be searched by program loader is stored in the file /etc/ld.so.conf. On my distributive, this file stores this row: include ld.so.conf.d/.conf*
And the above directory consists of:
[root#dev_host build]$ ls -la /etc/ld.so.conf.d
total 36
drwxr-xr-x. 2 root root 4096 Aug 29 23:13 .
drwxr-xr-x. 103 root root 12288 Sep 18 03:41 ..
-rw-r--r--. 1 root root 17 Mar 20 2012 atlas-x86_64.conf
-r--r--r--. 1 root root 324 May 7 23:40 kernel-2.6.32-431.17.1.el6.x86_64.conf
-r--r--r--. 1 root root 324 Nov 22 2013 kernel-2.6.32-431.el6.x86_64.conf
-rw-r--r--. 1 root root 17 Feb 12 2014 mysql-x86_64.conf
lrwxrwxrwx 1 root root 31 Aug 11 14:46 postgresql-pgdg-libs.conf -> /etc/alternatives/pgsql-ld-conf
-rw-r--r--. 1 root root 22 Sep 7 2011 qt-x86_64.conf
I examined all these files - there is no /usr/lib64. Why? Is it stored in /etc/ld.so.cache?
I got latest kernel source from kernel.org(using git), and followed the steps as described in this page to build the kernel. The kernel boots successfully, however, I have no idea what was done incorrectly in the configuration process that initrd.img-3.16.0 is so much larger than the build in one(initrd.img-3.13.0-32-generic)
I copied the configuration file .config from /boot/ and used "yes '' | make oldconfig" for the kernel configuration.
the file size total 191M
-rw-r--r-- 1 root root 1.2M Jul 14 21:29 abi-3.13.0-32-generic
-rw-r--r-- 1 root root 162K Jul 14 21:29 config-3.13.0-32-generic
-rw-r--r-- 1 root root 167K Aug 4 19:48 config-3.16.0
-rw-r--r-- 1 root root 20M Jul 28 15:14 initrd.img-3.13.0-32-generic
-rw-r--r-- 1 root root 151M Aug 4 19:48 initrd.img-3.16.0
-rw-r--r-- 1 root root 173K Mar 12 05:31 memtest86+.bin
-rw-r--r-- 1 root root 174K Mar 12 05:31 memtest86+.elf
-rw-r--r-- 1 root root 175K Mar 12 05:31 memtest86+_multiboot.bin
-rw------- 1 root root 3.3M Jul 14 21:29 System.map-3.13.0-32-generic
-rw-r--r-- 1 root root 3.4M Aug 4 19:48 System.map-3.16.0
-rw------- 1 root root 5.6M Jul 14 21:29 vmlinuz-3.13.0-32-generic
-rw-r--r-- 1 root root 5.7M Aug 4 19:48 vmlinuz-3.16.0
Thanks!
William
follow below steps to obtain the right kernel configuration
Copy /boot/.config to the kernel source code directory
make menuconfig
Exit and save configuration
make
and then continue with the other options for install
Note : Since you are using make oldconfig, this would enable many of the options not related to the platform but related to the CPU architecture.
This steps should help you solve this issue
Well i am trying to configure a single node cluster hadoop.Now i have created a user hadoop alonside and i have installed hadoop in my usr/local/hadoop directory.
Then i have done the following commands
chown hadoop:hadoop hadoop hadoop-1.0.4
ln -s hadoop-1.04/ hadoop.
as a result when i do ls -l
it shows the following
drwxr-xr-x 2 root root 4096 Jun 16 2012 bin
drwxr-xr-x 2 root root 4096 Jun 16 2012 etc
drwxr-xr-x 2 root root 4096 Jun 16 2012 games
lrwxrwxrwx 1 root root 13 Apr 16 13:20 hadoop -> hadoop-1.0.4/
drwxr-xr-x 13 hadoop hadoop 4096 Oct 3 2012 hadoop-1.0.4
drwxr-xr-x 2 root root 4096 Jun 16 2012 include
drwxr-xr-x 3 root root 4096 Jun 16 2012 lib
lrwxrwxrwx 1 root root 9 Aug 22 2012 man -> share/man
drwxr-xr-x 2 root root 4096 Jun 16 2012 sbin
drwxr-xr-x 6 root root 4096 Jun 16 2012 share
drwxr-xr-x 2 root root 4096 Jun 16 2012 src
so hadoop 1.0.4 has hadoop as usergroup.
Now when i am entring my hadoop group using
su -hadoop
so i can change my conf/hadoop-env.sh file but it is not happening
hadoop#iu1:/usr/local$ vi conf/hadoop-env.sh
the file opens in readonly mode
i think it should be editable mode
Please help
Thanks
You need to chown recursively:
chown -R hadoop:hadoop hadoop hadoop-1.0.4
To verify file permissions do
ls -l /usr/local/hadoop/conf/