Re: ssh basics
There are several weird hybrid ways of installing MySQL on Mac (the native install as provided by Apple, tar or dmg from Oracle, Darwin Ports, brew and Fink, if the latter is still around) all of which are utterly mutually incompatible. But once it is up, it's behaviour is the same as a typical unix install, once you have guessed where the files went. On Sun, Mar 22, 2015 at 6:54 PM, Thufir hawat.thu...@gmail.com wrote: Lucio Chiappetti lucio at lambrate.inaf.it writes: .. Conversely, I have some private databases on my machine B. While I maintain them locally with full access, I grant select access to an user on another machine C. In this case he runs the mysql client on C which connects to the mysqld on my machine B (actually he runs shell scripts which do it). I guess all this very simple arrangements should cover the needs of the OP as they do for me.. .. Unless you have to switch to Mac, which has a strange hybrid way of installing MySQL... It's clear that ssh is the better solution, even if a bit more work to setup, sometimes. -Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql -- - michael dykman - mdyk...@gmail.com May the Source be with you.
Re: ssh basics
Lucio Chiappetti lucio at lambrate.inaf.it writes: .. Conversely, I have some private databases on my machine B. While I maintain them locally with full access, I grant select access to an user on another machine C. In this case he runs the mysql client on C which connects to the mysqld on my machine B (actually he runs shell scripts which do it). I guess all this very simple arrangements should cover the needs of the OP as they do for me.. .. Unless you have to switch to Mac, which has a strange hybrid way of installing MySQL... It's clear that ssh is the better solution, even if a bit more work to setup, sometimes. -Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
- Original Message - From: Thufir hawat.thu...@gmail.com Subject: Re: ssh basics On Mon, 09 Mar 2015 16:00:08 +0100, Johan De Meersman wrote: All in all, you've done the opposite of what I asked - you've told me what you know and tried, but not what you were trying to figure out with your original question :-p Sounds like you mostly have a lot of fun, then :-p -- Unhappiness is discouraged and will be corrected with kitten pictures. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Mon, 09 Mar 2015 16:00:08 +0100, Johan De Meersman wrote: All in all, you've done the opposite of what I asked - you've told me what you know and tried, but not what you were trying to figure out with your original question :-p Do I really look like a guy with a plan? You know what I am? I'm a dog chasing cars. I wouldn't know what to do with one if I caught it. You know, I just... do things. Under the assumption that you wanted to use ssh to magically have a mysql prompt appear on your console: * [ssh -t user@host mysql] will log in to your machine and start the mysql client. The -t tells SSH to allocate a pseudoterminal even though you specified a command to run. Now, that sounds like a plan! -thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Mon, 9 Mar 2015, Johan De Meersman wrote: I'm interested in how ssh is used by MySQL. SSH is not used by MySQL at all :-) SSH is a way of connecting to a remote machine. MySQL is a database. You can use SSH to do things with the database, but they're not intrinsically related. True, howewer the OP might be interested knowing that I do continuously work on a mysql astronomical database on a different machine A (here on my institute LAN) from MY machine B just opening an xterm in which I ssh to such machine A, and then run the line-mode mysql client on such machine A. We do not offer mysql client access to such database outside of our institute, and in general not even to machines in our institute. For that we have a java tomcat client which connects via JDBC to the database. Since tomcat and mysqld run on the same machine A, we grant access only to a single user on localhost. Conversely, I have some private databases on my machine B. While I maintain them locally with full access, I grant select access to an user on another machine C. In this case he runs the mysql client on C which connects to the mysqld on my machine B (actually he runs shell scripts which do it). I guess all this very simple arrangements should cover the needs of the OP as they do for me. I may like a way to have a program (namely RSI IDL) to connect (bypassing the line mode mysql client) to the mysqld socket and issuing commands to it (essentially I want to issue a select into a table, and read back the output in an IDL structure) but I never managed to do it. But I did not try hard. -- Lucio Chiappetti - INAF/IASF - via Bassini 15 - I-20133 Milano (Italy) For more info : http://www.iasf-milano.inaf.it/~lucio/personal.html Do not like Firefox =29 ? Get Pale Moon ! http://www.palemoon.org -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
- Original Message - From: Lucio Chiappetti lu...@lambrate.inaf.it I may like a way to have a program (namely RSI IDL) to connect (bypassing the line mode mysql client) to the mysqld socket and issuing commands to it (essentially I want to issue a select into a table, and read back the output in an IDL structure) but I never managed to do it. But I did not try hard. The unix socket, just like a tcp socket, is an appendage of the mysql daemon, and would thus require you to speak the mysql protocol. You can point the appropriate driver for your application to the socket file in roughly the same way as you point it to an ip/port combo (see the driver's documentation); or you can tell the commandline client to execute the query you want using the -e parameter, and optionally -b, -s or a number of others that modify the output format. Sometimes the simplest things work best :-) -- Unhappiness is discouraged and will be corrected with kitten pictures. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
Am 10.03.2015 um 19:06 schrieb Lucio Chiappetti: I guess all this very simple arrangements should cover the needs of the OP as they do for me. but that won't help as long the OP fires up blindly ssh-tunnel commands without understanding what a SSH tunnel and a TCP connection is and *that* is the whole problem of the thread from the frist start: missing basics and follow howtos not understanding what they are talking about signature.asc Description: OpenPGP digital signature
Re: ssh basics
- Original Message - From: Thufir hawat.thu...@gmail.com Subject: Re: ssh basics Thank you for explaining that. I can't quite tell wether you're being sarcastic or not, so I'm going to give you the benefit of the doubt :-) Can you explain what you're trying to accomplish, without referencing sites you've found or things you've tried? I think I have a fair idea, but I'd like to hear it in your own words. -- Unhappiness is discouraged and will be corrected with kitten pictures. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
- Original Message - From: Emil Oppeln-Bronikowski e...@fuse.pl Subject: Re: ssh basics Please, people, do we need that kind of thread? Most action this list has seen since we had a thread about how little action this list sees... :-p -- The idea that Bill Gates appeared like a knight in shining armour to lead all customers out of a mire of technological chaos neatly ignores the fact that it was he who, by peddling second-rate technology, led them into it in the first place. - Douglas Adams in The Guardian, 25th August 1995 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
- Original Message - From: Thufir hawat.thu...@gmail.com Subject: Re: ssh basics I was being serious, I always appreciate a reply. I know it was worded oddly, but, yes, just take it at face value, please. Oh, I didn't see anything wrong with wording, but text doesn't convey a lot of inflexions :-p I read multiple suggestions to connect with that approach, the -L switch, none of the blogs/etc I saw explained why. I suppose they assume that you know why already so don't say. It's possible I overlooked the context, but I don't think so. -L is local port forwarding; so -L localhost:3306:localhost:3306 will forward localhost:3306 on your machine (first two parameters) to localhost:3306 on the remote machine (second two parameters). Remote port forwarding with -R works the other way round. In and of itself, I'm fine with ssh into the host and then using the mysql console. Since I'm not running scripts, it's moot whether the connection is through mysql directly, if that's the correct terminology, or just regular ssh. From a security point of view it isn't moot, as the MySQL protocol is unencrypted unless you've set up SSL - but that's probably out of your scope atm. I'm interested in how ssh is used by MySQL. While I have a pdf book on ssh, I don't, at the moment, have the time to just sit down and read it cover to cover. SSH is not used by MySQL at all :-) SSH is a way of connecting to a remote machine. MySQL is a database. You can use SSH to do things with the database, but they're not intrinsically related. In the longer term, I'm considering whether or not to backup a small db, with cron, master/slave, or replicate it -- or something else. I need to do some reading on that. I've always done fine with just using mysqldump, but will probably need some additional tools to use. Replication is not backup, it's high availability. Backup entails having multiple versions; or at the very least one copy that is not automatically updated with users errors from the primary system :-p Yes, I'm still figuring out the mechanics of ssh. It was more of a ssh question than a MySQL question, fair enough, pardon about that, but was within the specific context of MySQL. All in all, you've done the opposite of what I asked - you've told me what you know and tried, but not what you were trying to figure out with your original question :-p Under the assumption that you wanted to use ssh to magically have a mysql prompt appear on your console: * [ssh -t user@host mysql] will log in to your machine and start the mysql client. The -t tells SSH to allocate a pseudoterminal even though you specified a command to run. * SSH keys (using ssh-agent or passwordless keys) will authenticate you against the remote OS, but NOT against the mysql auth system. You could use a .my.cnf file in your remote homedir for that; but that will have to hold the password in plaintext. Not particularly secure. * [ssh -L 3307:localhost:3306 user@host] (3307 because you apparently had a local mysql on 3306 already) will forward as above, so you can do [mysql -hlocalhost -p3307] /on another terminal/ to connect to the remote mysql. Personally I find the last one only useful if I want to use other things than the commandline on remote servers; but ymmv :-) -- Unhappiness is discouraged and will be corrected with kitten pictures. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Mon, 09 Mar 2015 13:44:51 +0100, Johan De Meersman wrote: Thank you for explaining that. I can't quite tell wether you're being sarcastic or not, so I'm going to give you the benefit of the doubt Can you explain what you're trying to accomplish, without referencing sites you've found or things you've tried? I think I have a fair idea, but I'd like to hear it in your own words. I was being serious, I always appreciate a reply. I know it was worded oddly, but, yes, just take it at face value, please. I read multiple suggestions to connect with that approach, the -L switch, none of the blogs/etc I saw explained why. I suppose they assume that you know why already so don't say. It's possible I overlooked the context, but I don't think so. In and of itself, I'm fine with ssh into the host and then using the mysql console. Since I'm not running scripts, it's moot whether the connection is through mysql directly, if that's the correct terminology, or just regular ssh. I'm interested in how ssh is used by MySQL. While I have a pdf book on ssh, I don't, at the moment, have the time to just sit down and read it cover to cover. In the longer term, I'm considering whether or not to backup a small db, with cron, master/slave, or replicate it -- or something else. I need to do some reading on that. I've always done fine with just using mysqldump, but will probably need some additional tools to use. I can't really foresee much admin, many scripts to run against the db, but I suppose there's always something. Yes, I'm still figuring out the mechanics of ssh. It was more of a ssh question than a MySQL question, fair enough, pardon about that, but was within the specific context of MySQL. -Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Sun, 08 Mar 2015 13:41:32 +0100, Reindl Harald wrote: What's the advantage? that you can have a local application using mysql by -h 127.0.0.1 which is a complete different thing than a interactive shell? Thank you for explaining that. -Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Sun, 08 Mar 2015 08:43:41 -0400, Ruben Safir wrote: gmail sucks You prefer yahoo mail? Just curious. -Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
Am 08.03.2015 um 02:38 schrieb Thufir: how is this: ssh -L 3305:localhost:3306 thufir@192.168.1.3 different from ssh thufir@192.168.1.3 they seem functionally equivalent, neither gives me a MySQL console right off the bat. (I'm reading the man page and trying to understand bind and the -L switch.) I'd like to be able to use my ssh key to facilitate the login process; for example, login remotely without a password, just using the key. oh my god... https://www.google.at/search?q=ssh+tunnel signature.asc Description: OpenPGP digital signature
Re: ssh basics
Please, people, do we need that kind of thread? -- vag·a·bond adjective \ˈva-gə-ˌbänd\ a : of, relating to, or characteristic of a wanderer b : leading an unsettled, irresponsible, or disreputable life -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Sun, Mar 08, 2015 at 08:03:05PM +, Thufir wrote: On Sun, 08 Mar 2015 08:43:41 -0400, Ruben Safir wrote: gmail sucks You prefer yahoo mail? Just curious. Your not curious. -Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www2.mrbrklyn.com/resources - Unpublished Archive http://www.coinhangout.com - coins! http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and and extermination camps, but incompatible with living as a free human being. -RI Safir 2013 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Sun, Mar 08, 2015 at 12:20:10PM +, Thufir wrote: On Sun, 08 Mar 2015 10:47:17 +0100, Reindl Harald wrote: oh my god... https://www.google.at/search?q=ssh+tunnel Yah know ssh and mysql wasn't invented 20 minutes ago. They are basic tools for GNU users for almost 2 decade so get off your ass and go look this up, or ask the question in the porper location at least. Or better, find a local user group, get off your damn cellphone, and get some obviously much needed mentoring in GNU/Linux basics. gmail sucks hmm, are you thinking that I'm not using ssh? Because I'm using ssh currently, and it works fine. How is ssh -L 3305:localhost:3306 thufir@192.168.1.3 any better or more useful than ssh thufir@192.168.1.3 ? The process described here: http://quintagroup.com/services/support/tutorials/mysql-linux doesn't seem demonstratively better, or even different, than just using ssh to login, and then logging into MySQL. However, I've seen that approach mentioned quite a bit. What's the advantage? thanks, Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www2.mrbrklyn.com/resources - Unpublished Archive http://www.coinhangout.com - coins! http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and and extermination camps, but incompatible with living as a free human being. -RI Safir 2013 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
Am 08.03.2015 um 13:20 schrieb Thufir: On Sun, 08 Mar 2015 10:47:17 +0100, Reindl Harald wrote: oh my god... https://www.google.at/search?q=ssh+tunnel hmm, are you thinking that I'm not using ssh? Because I'm using ssh currently, and it works fine. no, i am thinking you have no clue what a SSH tunnel nor a TCP connection are, otherwise this thread won't exist How is ssh -L 3305:localhost:3306 thufir@192.168.1.3 any better or more useful than ssh thufir@192.168.1.3 ? boah the one is a ordinary SSH shell and the other is having the remote mysqld server listening on localhost The process described here: http://quintagroup.com/services/support/tutorials/mysql-linux doesn't seem demonstratively better, or even different, than just using ssh to login, and then logging into MySQL. However, I've seen that approach mentioned quite a bit. What's the advantage? that you can have a local application using mysql by -h 127.0.0.1 which is a complete different thing than a interactive shell? signature.asc Description: OpenPGP digital signature
Re: ssh basics
On Sun, 08 Mar 2015 10:47:17 +0100, Reindl Harald wrote: oh my god... https://www.google.at/search?q=ssh+tunnel hmm, are you thinking that I'm not using ssh? Because I'm using ssh currently, and it works fine. How is ssh -L 3305:localhost:3306 thufir@192.168.1.3 any better or more useful than ssh thufir@192.168.1.3 ? The process described here: http://quintagroup.com/services/support/tutorials/mysql-linux doesn't seem demonstratively better, or even different, than just using ssh to login, and then logging into MySQL. However, I've seen that approach mentioned quite a bit. What's the advantage? thanks, Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
On Sun, 08 Mar 2015 00:20:26 +, Thufir wrote: I mean, I can ssh into tleilax and then fire up the MySQL console. Is there a better approach? This just hangs: thufir@doge:~$ thufir@doge:~$ mysql -u cron -h 192.168.1.3 -p Enter password: ^C thufir@doge:~$ because, I think, I disabled password based authentication (as I recall, I haven't been on the system in a bit). In any event, it's good that it hangs. MySQL log: 150223 7:35:24 [Note] /usr/sbin/mysqld: Shutdown complete 150223 07:35:24 mysqld_safe mysqld from pid file /var/run/mysql/mysqld.pid ended 150307 18:38:27 mysqld_safe Starting mysqld daemon with databases from / var/lib/mysql 150307 18:38:32 [Warning] The syntax '--log-slow-queries' is deprecated and will be removed in a future release. Please use '--slow-query-log'/'-- slow-query-log-file' instead. 150307 18:38:33 [Warning] Using unique option prefix myisam_recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead. 150307 18:38:33 InnoDB: The InnoDB memory heap is disabled 150307 18:38:33 InnoDB: Mutexes and rw_locks use GCC atomic builtins 150307 18:38:33 InnoDB: Compressed tables use zlib 1.2.8 150307 18:38:33 InnoDB: Using Linux native AIO 150307 18:38:33 InnoDB: Initializing buffer pool, size = 128.0M 150307 18:38:33 InnoDB: Completed initialization of buffer pool 150307 18:38:33 InnoDB: highest supported file format is Barracuda. 150307 18:38:33 InnoDB: Waiting for the background threads to start 150307 18:38:34 Percona XtraDB (http://www.percona.com) 5.5.33- MariaDB-31.1 started; log sequence number 1597945 150307 18:38:34 [Note] Server socket created on IP: '0.0.0.0'. 150307 18:38:34 [Warning] 'user' entry 'root@linux-k7qk' ignored in -- skip-name-resolve mode. 150307 18:38:34 [Warning] 'user' entry '@linux-k7qk' ignored in --skip- name-resolve mode. 150307 18:38:34 [Warning] 'proxies_priv' entry '@ root@linux-k7qk' ignored in --skip-name-resolve mode. 150307 18:38:34 [Note] Event Scheduler: Loaded 0 events 150307 18:38:34 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.5.33-MariaDB-log' socket: '/var/run/mysql/mysql.sock' port: 3306 openSUSE package thufir@tleilax:~ thufir@tleilax:~ thanks, Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
Re: ssh basics
Am 08.03.2015 um 01:20 schrieb Thufir: I want to ssh into Mysql, something like: thufir@doge:~$ thufir@doge:~$ ssh -L 3306:localhost:3306 thufir@192.168.1.3 bind: Address already in use that is a pretty clear message you can't use port 3306 if you have running a mysqld on both machines, so just use a different local port signature.asc Description: OpenPGP digital signature
Re: ssh basics
On Sun, 08 Mar 2015 01:30:46 +0100, Reindl Harald wrote: Am 08.03.2015 um 01:20 schrieb Thufir: I want to ssh into Mysql, something like: thufir@doge:~$ thufir@doge:~$ ssh -L 3306:localhost:3306 thufir@192.168.1.3 bind: Address already in use that is a pretty clear message you can't use port 3306 if you have running a mysqld on both machines, so just use a different local port Thanks. how is this: ssh -L 3305:localhost:3306 thufir@192.168.1.3 different from ssh thufir@192.168.1.3 they seem functionally equivalent, neither gives me a MySQL console right off the bat. (I'm reading the man page and trying to understand bind and the -L switch.) I'd like to be able to use my ssh key to facilitate the login process; for example, login remotely without a password, just using the key. thanks, Thufir -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
