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Author Topic: Pushpool - Tech Support  (Read 126838 times)
gigabytecoin
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June 26, 2011, 02:54:53 AM
 #201

Am I correct in believing that a "Y" value inside the upstream_result MySQL column denotes the exact username, ip address and solution which was just solved?

In other words, a Y means I found a block?
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June 26, 2011, 02:58:37 AM
 #202

No it means u submitted a valid share I believe.



 #proxy is most likely your external ip address if your running a public pool | Public pools WON'T have the following ip addresses: (10.0.0.1, 127.0.0.1, 192.168.1.100, or 192.168.254.254,etc,etc)
      # requests to us | "proxy" should be set to your ip address that people will connect through
      { "port" : 8344, "protocol" : "http-json",
        "proxy" : "192.168.1.11" },

You would connect your miner to 8344 in this setup


Miner --> puspoold --> bitcoind --> bitcoin network

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June 26, 2011, 03:03:01 AM
 #203

Yes the block chain has been downloaded. Yes it is running. I've run killall -v bitcoind and it kills the process.

How do I open 8341 port up?

Below is all of my code and commands that I run but I can't seem to understand how to connect my phoenix miner to my server that is running pushpoold. The output that I get from my phoenix miner is Problems connecting to RPC. Am I supposed to connect with the port that is in bitcoin.conf (that wouldn't make sense in setting up a pool though).

Server.json
Code:
{
   # network ports
   "listen" : [
      # binary protocol (default), port 8342
      { "port" : 8342 },

      # HTTP JSON-RPC protocol, port 8341
      { "port" : 8341, "protocol" : "http-json" },

      # HTTP JSON-RPC protocol, port 8344,
      #proxy is most likely your external ip address if your running a public pool | Public pools WON'T have the following ip addresses: (10.0.0.1, 127.0.0.1, 192.168.1.100, or 192.168.254.254,etc,etc)
      # requests to us | "proxy" should be set to your ip address that people will connect through
      { "port" : 8344, "protocol" : "http-json",
        "proxy" : "192.168.1.11" },

      # binary protocol, localhost-only port 8339
      # host is most likely your localhost address
      { "host" : "127.0.0.1", "port" : 8338, "protocol" : "binary" }
   ],

   # database settings
   "database" : {
      "engine" : "mysql",

      "host" : "localhost",

      "port" : 3306,

      #database name
      "name" : "pushpool",
      #database username
      "username" : "mysqladmin",
      #database password
      "password" : "xxxxxxxx",
      #enable sharelog | to insert share data or sometimes known as "work"
      "sharelog" : true,
      "stmt.pwdb":"SELECT password FROM pool_worker WHERE username = ?",
     
      "stmt.sharelog":"INSERT INTO shares (rem_host, username, our_result, upstream_result, reason, solution) VALUES (?, ?, ?, ?, ?, ?)"

   },

   #uncoment this when you want to use memcached (Recommended for servers over 1.5gb of ram)
   # cache settings
   "memcached" : {
      "servers" : [
         { "host" : "127.0.0.1", "port" : 11211 }
      ]
   },

   "pid" : "/home/bitcoinminer2/POOLINSTALL/pushpool-0.5/pushpoold.pid",

   # overrides local hostname detection
   "forcehost" : "localhost.localdomain",

   "log.requests" : "/home/bitcoinminer2/POOLINSTALL/pushpool-0.5/request.log",
   "log.shares" : "/home/bitcoinminer2/POOLINSTALL/pushpool-0.5/shares.log",

   # the server assumes longpolling (w/ SIGUSR1 called for each blk)
   "longpoll.disable" : false,

   # length of time to cache username/password credentials, in seconds
   "auth.cred_cache.expire" : 75,

   # RPC settings
   #Bitcoind Protocal settings
   #Host were bitcoind can be found on the network
   "rpc.url" : "http://127.0.0.1:9098/",
   #Username & password to connect to bitcoind
   "rpc.user" : "user",
   "rpc.pass" : "pass",

   # rewrite returned 'target' to difficulty-1?
   "rpc.target.rewrite" : true
}


bitcoind.conf
Code:
rpcuser=user
rpcpassword=pass
rpcport=9098
server=1
gen=0
rpcallowip=*


commands
Code:
memcached -u bitcoinminer2
./bitcoind -server -daemon
./pushpoold -E


Output
Code:
bitcoinminer2@ubuntu:~/POOLINSTALL/pushpool-0.5$
[2011-06-25 14:35:43.004276] Listening on host :: port 8342
[2011-06-25 14:35:43.004627] Listening on host :: port 8341
[2011-06-25 14:35:43.004749] Listening on host :: port 8344
[2011-06-25 14:35:43.004859] Listening on host 127.0.0.1 port 8338

Phoenix settings
Code:
start /DC:\Phoenix phoenix.exe -u http://NH2LwYuL585o6sgiikAG42sbmAhGwj8Vsd:pass@192.168.1.11:8338/;askrate=10 -k poclbm VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128 DEVICE=0 FASTLOOP=false

Mysql Commands
Code:
sudo /etc/init.d/mysql start
mysql -u root -p
use pushpool

Mysql Output
Code:
mysql> SELECT * FROM pool_worker;
+----+------------------+------------------------------------+----------+
| id | associatedUserId | username                           | password |
+----+------------------+------------------------------------+----------+
|  1 |                0 | NH2LwYuL585o6sgiikAG42sbmAhGwj8Vsd | pass     |
+----+------------------+------------------------------------+----------+
1 row in set (0.01 sec)

mysql> SELECT * FROM shares;
Empty set (0.00 sec)

mysql>

Has bitcoind downloaded all of the blockchain yet? ./bitcoind getblockcount (should be around 133,297 right now)

Is bitcoind running? ps aux | grep bitcoind

Have you opened up the ports on your machine so that you can access port 8341 from the external miner?

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June 26, 2011, 03:17:23 AM
 #204

Your miner needs to point to port 8344 based on your server.json file.  What OS is your miner on can you telnet to your pushpoold server on port 8344

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June 26, 2011, 04:28:14 AM
 #205

Yes the block chain has been downloaded. Yes it is running. I've run killall -v bitcoind and it kills the process.

How do I open 8341 port up?

Below is all of my code and commands that I run but I can't seem to understand how to connect my phoenix miner to my server that is running pushpoold. The output that I get from my phoenix miner is Problems connecting to RPC. Am I supposed to connect with the port that is in bitcoin.conf (that wouldn't make sense in setting up a pool though).

Server.json
Code:
{
   # network ports
   "listen" : [
      # binary protocol (default), port 8342
      { "port" : 8342 },

      # HTTP JSON-RPC protocol, port 8341
      { "port" : 8341, "protocol" : "http-json" },

      # HTTP JSON-RPC protocol, port 8344,
      #proxy is most likely your external ip address if your running a public pool | Public pools WON'T have the following ip addresses: (10.0.0.1, 127.0.0.1, 192.168.1.100, or 192.168.254.254,etc,etc)
      # requests to us | "proxy" should be set to your ip address that people will connect through
      { "port" : 8344, "protocol" : "http-json",
        "proxy" : "192.168.1.11" },

      # binary protocol, localhost-only port 8339
      # host is most likely your localhost address
      { "host" : "127.0.0.1", "port" : 8338, "protocol" : "binary" }
   ],

   # database settings
   "database" : {
      "engine" : "mysql",

      "host" : "localhost",

      "port" : 3306,

      #database name
      "name" : "pushpool",
      #database username
      "username" : "mysqladmin",
      #database password
      "password" : "xxxxxxxx",
      #enable sharelog | to insert share data or sometimes known as "work"
      "sharelog" : true,
      "stmt.pwdb":"SELECT password FROM pool_worker WHERE username = ?",
     
      "stmt.sharelog":"INSERT INTO shares (rem_host, username, our_result, upstream_result, reason, solution) VALUES (?, ?, ?, ?, ?, ?)"

   },

   #uncoment this when you want to use memcached (Recommended for servers over 1.5gb of ram)
   # cache settings
   "memcached" : {
      "servers" : [
         { "host" : "127.0.0.1", "port" : 11211 }
      ]
   },

   "pid" : "/home/bitcoinminer2/POOLINSTALL/pushpool-0.5/pushpoold.pid",

   # overrides local hostname detection
   "forcehost" : "localhost.localdomain",

   "log.requests" : "/home/bitcoinminer2/POOLINSTALL/pushpool-0.5/request.log",
   "log.shares" : "/home/bitcoinminer2/POOLINSTALL/pushpool-0.5/shares.log",

   # the server assumes longpolling (w/ SIGUSR1 called for each blk)
   "longpoll.disable" : false,

   # length of time to cache username/password credentials, in seconds
   "auth.cred_cache.expire" : 75,

   # RPC settings
   #Bitcoind Protocal settings
   #Host were bitcoind can be found on the network
   "rpc.url" : "http://127.0.0.1:9098/",
   #Username & password to connect to bitcoind
   "rpc.user" : "user",
   "rpc.pass" : "pass",

   # rewrite returned 'target' to difficulty-1?
   "rpc.target.rewrite" : true
}


bitcoind.conf
Code:
rpcuser=user
rpcpassword=pass
rpcport=9098
server=1
gen=0
rpcallowip=*


commands
Code:
memcached -u bitcoinminer2
./bitcoind -server -daemon
./pushpoold -E


Output
Code:
bitcoinminer2@ubuntu:~/POOLINSTALL/pushpool-0.5$
[2011-06-25 14:35:43.004276] Listening on host :: port 8342
[2011-06-25 14:35:43.004627] Listening on host :: port 8341
[2011-06-25 14:35:43.004749] Listening on host :: port 8344
[2011-06-25 14:35:43.004859] Listening on host 127.0.0.1 port 8338

Phoenix settings
Code:
start /DC:\Phoenix phoenix.exe -u http://NH2LwYuL585o6sgiikAG42sbmAhGwj8Vsd:pass@192.168.1.11:8338/;askrate=10 -k poclbm VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128 DEVICE=0 FASTLOOP=false

Mysql Commands
Code:
sudo /etc/init.d/mysql start
mysql -u root -p
use pushpool

Mysql Output
Code:
mysql> SELECT * FROM pool_worker;
+----+------------------+------------------------------------+----------+
| id | associatedUserId | username                           | password |
+----+------------------+------------------------------------+----------+
|  1 |                0 | NH2LwYuL585o6sgiikAG42sbmAhGwj8Vsd | pass     |
+----+------------------+------------------------------------+----------+
1 row in set (0.01 sec)

mysql> SELECT * FROM shares;
Empty set (0.00 sec)

mysql>

Has bitcoind downloaded all of the blockchain yet? ./bitcoind getblockcount (should be around 133,297 right now)

Is bitcoind running? ps aux | grep bitcoind

Have you opened up the ports on your machine so that you can access port 8341 from the external miner?

Well where do you host your server?

Usually you need to open it in your firewall like iptables or something.

Or perhaps you need to contact your web host.

On amazon ec2 it's as simple as adding it to your security group you are working with.

Can anybody else comment on FpgaMiner's complaints earlier? Because I am noticing the same thing...

I experienced an odd problem with pushpool.

I got it setup, and accepting shares against a bitcoin --testnet client setup correctly with RPC. So, everything appeared to work. I even found a few blocks, and those submitted fine.

However, at a difficulty of 38, and >1000 shares, it had only found 2 blocks.  Huh That's either really bad luck, or something was broken.

So I tried pointing the miners at bitcoind directly, and they found 3 blocks in a few minutes (as expected for the hashrate).

I have 300Mhash/s aimed at my pushpool server and I can see that my miners are connected and working. The "shares" MySQL table is increasing steadily.

The bitcoind client is running in testnet mode.

blkmond blkmond.conf is running

I have only found 1 block (I have just 1 Y in my "upstream_result" MySQL Column for my worker) after mining for about 60 minutes at 700Mhash/s.

According to our favorite website http://www.alloscomp.com/bitcoin/calculator.php ... 700MHash/s at a difficulty level of 45 I should be finding 15,645.98 BTC per day. Or about 312 blocks of 50 BTC per day or about 13 blocks per hour. Is there something wrong with my math? Why have I only found 1 block so far?

What are "shares" anyways? Are they not simply difficulty 1 proofs? If the difficulty level is at 45 then theoretically shouldn't I find a block every 45 shares created? There are 1200 shares sitting in my MySQL DB so if that was true then I should have about 26 blocks by now, no?
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June 26, 2011, 05:09:07 AM
 #206

Quote
What are "shares" anyways? Are they not simply difficulty 1 proofs? If the difficulty level is at 45 then theoretically shouldn't I find a block every 45 shares created? There are 1200 shares sitting in my MySQL DB so if that was true then I should have about 26 blocks by now, no?
Indeed, a share is a difficulty 1 proof, which has a small percentage chance of also meeting the real difficulty (45 in this case).

You'll find a block every Target Difficulty (45 in this case) shares on average. So yes, as you quoted in my post, I generated 1000 shares, and at difficulty 38 I should have gotten approximately 26 blocks. But I only found 2 blocks. Whereas when I pointed my miners at bitcoind directly I began finding blocks at the expected rate. Obviously something was screwy.

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June 26, 2011, 10:51:53 AM
 #207

Okay I have verified that bitcoind is running and that all blocks have been downloaded.

Also I have run :
Code:
sudo ufw allow <port>

...on all of the ports at the top of server.json.

When I try to test the ports with :
Code:
telnet localhost <port>

...I get a message saying connection failed/rejected for port <port>.

I'm a bit lost at this point. Any help?

Also is there any specific setup I would have to ensure with the port used in connecting to my mysql database? When I setup mysql do I have to specify a port or is that the default?

Any help is much appreciated...

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June 26, 2011, 11:18:53 AM
 #208

Okay I have verified that bitcoind is running and that all blocks have been downloaded.

Also I have run :
Code:
sudo ufw allow <port>

...on all of the ports at the top of server.json.

When I try to test the ports with :
Code:
telnet localhost <port>

...I get a message saying connection failed/rejected for port <port>.

I'm a bit lost at this point. Any help?

Also is there any specific setup I would have to ensure with the port used in connecting to my mysql database? When I setup mysql do I have to specify a port or is that the default?

Any help is much appreciated...


I also tried the following on port 8344 to get it to open:
Code:
sudo iptables -A INPUT -p tcp --dport 8344 -j ACCEPT

I don't this this point really matters but i am connecting in windows 7 with a phoenix miner to ubuntu 11.

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June 26, 2011, 04:13:01 PM
 #209

pushpoold requires 40 bits of zeroes before submitting upstream, not 32.

Jeff Garzik, bitcoin core dev team and BitPay engineer; opinions are my own, not my employer.
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June 26, 2011, 07:21:27 PM
 #210

Quote
pushpoold requires 40 bits of zeroes before submitting upstream, not 32.
Is this the reason for fpgaminer and gigabytecoin's difference between their expected solved blocks and the actual ones they've been able to solve on testnet, as I'm having the same type of discrepancy?

I've been fearing something wrong with my setup but if I understand that quote correctly, effectively pushpoold is setting the difficulty higher than testnet's current actual difficulty? 
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June 26, 2011, 08:28:54 PM
 #211

Okay I'm still not able to connect with my phoenix miner using:

Code:
start /DC:\Phoenix phoenix.exe -u http://NH2LwYuL585o6sgiikAG42sbmAhGwj8Vsd:pass@192.168.1.11:8344/;askrate=10 -k poclbm VECTORS BFI_INT AGGRESSION=11 WORKSIZE=128 DEVICE=0 FASTLOOP=false

I tried to open up port 8344 as follows (still can't get phoenix to connect to bitcoind). Any help?

Code:
root@ubuntu:/# sudo ufw allow proto tcp from 192.168.1.12 to 192.168.1.13 port 8344
Rule added
root@ubuntu:/# sudo ufw allow proto tcp from 192.168.1.10 to 192.168.1.10 port 8344
Rule added
root@ubuntu:/# sudo ufw --dry-run allow http
*filter
:ufw-user-input - [0:0]
:ufw-user-output - [0:0]
:ufw-user-forward - [0:0]
:ufw-before-logging-input - [0:0]
:ufw-before-logging-output - [0:0]
:ufw-before-logging-forward - [0:0]
:ufw-user-logging-input - [0:0]
:ufw-user-logging-output - [0:0]
:ufw-user-logging-forward - [0:0]
:ufw-after-logging-input - [0:0]
:ufw-after-logging-output - [0:0]
:ufw-after-logging-forward - [0:0]
:ufw-logging-deny - [0:0]
:ufw-logging-allow - [0:0]
:ufw-user-limit - [0:0]
:ufw-user-limit-accept - [0:0]
### RULES ###

### tuple ### allow any 8342 0.0.0.0/0 any 0.0.0.0/0 in
-A ufw-user-input -p tcp --dport 8342 -j ACCEPT
-A ufw-user-input -p udp --dport 8342 -j ACCEPT

### tuple ### allow any 8341 0.0.0.0/0 any 0.0.0.0/0 in
-A ufw-user-input -p tcp --dport 8341 -j ACCEPT
-A ufw-user-input -p udp --dport 8341 -j ACCEPT

### tuple ### allow any 8344 0.0.0.0/0 any 0.0.0.0/0 in
-A ufw-user-input -p tcp --dport 8344 -j ACCEPT
-A ufw-user-input -p udp --dport 8344 -j ACCEPT

### tuple ### allow any 8338 0.0.0.0/0 any 0.0.0.0/0 in
-A ufw-user-input -p tcp --dport 8338 -j ACCEPT
-A ufw-user-input -p udp --dport 8338 -j ACCEPT

### tuple ### allow tcp 8344 192.168.1.13 any 192.168.1.12 in
-A ufw-user-input -p tcp -d 192.168.1.13 --dport 8344 -s 192.168.1.12 -j ACCEPT

### tuple ### allow tcp 8344 192.168.1.10 any 192.168.1.10 in
-A ufw-user-input -p tcp -d 192.168.1.10 --dport 8344 -s 192.168.1.10 -j ACCEPT

### tuple ### allow tcp 80 0.0.0.0/0 any 0.0.0.0/0 in
-A ufw-user-input -p tcp --dport 80 -j ACCEPT

### END RULES ###

### LOGGING ###
-A ufw-after-logging-input -j LOG --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
-A ufw-after-logging-forward -j LOG --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
-I ufw-logging-deny -m state --state INVALID -j RETURN -m limit --limit 3/min --limit-burst 10
-A ufw-logging-deny -j LOG --log-prefix "[UFW BLOCK] " -m limit --limit 3/min --limit-burst 10
-A ufw-logging-allow -j LOG --log-prefix "[UFW ALLOW] " -m limit --limit 3/min --limit-burst 10
### END LOGGING ###

### RATE LIMITING ###
-A ufw-user-limit -m limit --limit 3/minute -j LOG --log-prefix "[UFW LIMIT BLOCK] "
-A ufw-user-limit -j REJECT
-A ufw-user-limit-accept -j ACCEPT
### END RATE LIMITING ###
COMMIT
Rules updated
root@ubuntu:/#

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gigabytecoin
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June 26, 2011, 09:46:19 PM
 #212

Quote
pushpoold requires 40 bits of zeroes before submitting upstream, not 32.
Is this the reason for fpgaminer and gigabytecoin's difference between their expected solved blocks and the actual ones they've been able to solve on testnet, as I'm having the same type of discrepancy?

I've been fearing something wrong with my setup but if I understand that quote correctly, effectively pushpoold is setting the difficulty higher than testnet's current actual difficulty? 

I too did not understand Jeff's meaning when he said that.

I have been running 1.4Ghps towards my pushpool running on testnet all night, and 700mhps running directly towards bitcoind testnet all night.

./bitcoind getinfo is now showing 7400 bitcoins generated in my wallet... but apparantly the "shares" MySQL Database only has about 60 "Y" upstream_results in it...

So running 1.4GHps through the pool only found about 60 blocks on testnet... where as running 700mhps through bitcoind directly netted at least 88 blocks and I assume another 120 or so are on their way down the line in forms of a confirmation.

What could be going wrong???

One thing I did notice... when I was mining against pushpoold directly... I seemed to find a block almost immediately and then nothing for a few hours... until I start (simultaneously) mining through bitcoind and then the blocks started to pour in through pushpool. It's as though mining through bitcoind somewhat "helps things along"..?
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June 26, 2011, 09:57:34 PM
 #213

Is there any reason that when i run pushpool and I try to find the process that is created by running ps aux | grep pushpoold that it doesn't appear to recognize what I ran? When I try it on bitcoind it finds it as "./bitcoind -server -daemon".

I suspect this could possibly be why I can't find any way to connect my phoenix miner to pushpoold.

Any thoughts anyone?

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June 26, 2011, 10:27:42 PM
 #214

Are you sure it is not dying right away after it comes up?  I had a lot of initial issues getting pushpoold to even start up and stay started.  Most of the time is was a database issue when pp tried to connect to mysql it was failing and causing pp to stop right away make sure pushpool is started and you should be able to telnet to ur port 8344

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June 26, 2011, 10:34:43 PM
 #215

Are you sure it is not dying right away after it comes up?  I had a lot of initial issues getting pushpoold to even start up and stay started.  Most of the time is was a database issue when pp tried to connect to mysql it was failing and causing pp to stop right away make sure pushpool is started and you should be able to telnet to ur port 8344

Okay I'm trying to figure out what could be stopping pushpool from running. I double checked the database name, username to database, and associated password by logging into mysql via the terminal and then doing a SELECT * FROM pool_worker to see if I could get that far.

I did have one suspicion about the port that is used to connect to the database. Is that port a default port if so how could I change it in mysql if I need to?

Is the method I used of finding the process ID associated with pushpoold a valid way of checking to see if pushpoold is running?

thanks for your help.

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fpgaminer
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June 26, 2011, 10:52:07 PM
 #216

Quote
pushpoold requires 40 bits of zeroes before submitting upstream, not 32.
jgarzik: Oh, thank you! This has finally cleared up the mystery for me and gigabytecoin  Grin What strange little bit of behavior from pushpool.

I have confirmed this. Here's the relevant code (msg.c):

Code:
static int check_hash(const char *remote_host, const char *auth_user,
      const char *data_str, const char **reason_out)
{
...
if (hash32[7] != 0) {
*reason_out = "H-not-zero";
return 0; /* work is invalid */
}
if (hash[27] == 0)
better_hash = true;
...
return better_hash ? 2 : 1; /* work is valid */

So check_hash will return 2 only if the submitted share has a hash with 40 0 bits, as jgarzik pointed out. Now let's see what effect that has:

Code:
static bool submit_work(const char *remote_host, const char *auth_user,
CURL *curl, const char *hexstr, bool *json_result)
{
...
/* validate submitted work */
check_rc = check_hash(remote_host, auth_user, hexstr, &reason);
...
/* if hash is sufficient for share, but not target,
* don't bother submitting to bitcoind
*/
if (srv.easy_target && check_rc == 1) {
*json_result = true;
sharelog(remote_host, auth_user, "Y", NULL, NULL, hexstr);
return true;
}

So if the hash had less than 40 bits of 0s, then it doesn't even try to submit it to bitcoind. I think that corresponds to a difficulty of 256?

I would consider this a bug. pushpoold should already know the target difficulty, so why can't it do a correct check? Also, doing a proper check would reduce the network activity between pushpoold and bitcoind slightly (it would submit less false Proof of Works to bitcoind).

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June 26, 2011, 10:56:56 PM
 #217

Are you sure it is not dying right away after it comes up?  I had a lot of initial issues getting pushpoold to even start up and stay started.  Most of the time is was a database issue when pp tried to connect to mysql it was failing and causing pp to stop right away make sure pushpool is started and you should be able to telnet to ur port 8344

Okay I'm trying to figure out what could be stopping pushpool from running. I double checked the database name, username to database, and associated password by logging into mysql via the terminal and then doing a SELECT * FROM pool_worker to see if I could get that far.

I did have one suspicion about the port that is used to connect to the database. Is that port a default port if so how could I change it in mysql if I need to?

Is the method I used of finding the process ID associated with pushpoold a valid way of checking to see if pushpoold is running?

thanks for your help.

What version of pushpool are you trying to run? v0.5 or v0.4.1 Huh

If you are using v0.5 try v0.4.1 ...

To check to see if pushpool is running, simply type ps aux | grep pushpool and you should notice at least two references to pushpool. (One for the search command you just submit, and one for the running pushpoo program).

Also try running pushpool by typing ./pushpool -E

I can't seem to get ./pushpool running by simply running /pushpool but if I add the -E then it seems to work great.
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June 26, 2011, 11:11:22 PM
 #218

Quote
pushpoold requires 40 bits of zeroes before submitting upstream, not 32.
jgarzik: Oh, thank you! This has finally cleared up the mystery for me and gigabytecoin  Grin What strange little bit of behavior from pushpool.

I have confirmed this. Here's the relevant code (msg.c):

Code:
static int check_hash(const char *remote_host, const char *auth_user,
      const char *data_str, const char **reason_out)
{
...
if (hash32[7] != 0) {
*reason_out = "H-not-zero";
return 0; /* work is invalid */
}
if (hash[27] == 0)
better_hash = true;
...
return better_hash ? 2 : 1; /* work is valid */

So check_hash will return 2 only if the submitted share has a hash with 40 0 bits, as jgarzik pointed out. Now let's see what effect that has:

Code:
static bool submit_work(const char *remote_host, const char *auth_user,
CURL *curl, const char *hexstr, bool *json_result)
{
...
/* validate submitted work */
check_rc = check_hash(remote_host, auth_user, hexstr, &reason);
...
/* if hash is sufficient for share, but not target,
* don't bother submitting to bitcoind
*/
if (srv.easy_target && check_rc == 1) {
*json_result = true;
sharelog(remote_host, auth_user, "Y", NULL, NULL, hexstr);
return true;
}

So if the hash had less than 40 bits of 0s, then it doesn't even try to submit it to bitcoind. I think that corresponds to a difficulty of 256?

I would consider this a bug. pushpoold should already know the target difficulty, so why can't it do a correct check? Also, doing a proper check would reduce the network activity between pushpoold and bitcoind slightly (it would submit less false Proof of Works to bitcoind).

So in other words... pushpool isn't capable of testing through testnet until the difficulty is at least 256, is that correct?

Or in other words... pushpool works flawlessly, just not with testnet?

Thank god, now I can start coding on the "front end" stuff!
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June 26, 2011, 11:16:30 PM
 #219

Are you sure it is not dying right away after it comes up?  I had a lot of initial issues getting pushpoold to even start up and stay started.  Most of the time is was a database issue when pp tried to connect to mysql it was failing and causing pp to stop right away make sure pushpool is started and you should be able to telnet to ur port 8344

Okay I'm trying to figure out what could be stopping pushpool from running. I double checked the database name, username to database, and associated password by logging into mysql via the terminal and then doing a SELECT * FROM pool_worker to see if I could get that far.

I did have one suspicion about the port that is used to connect to the database. Is that port a default port if so how could I change it in mysql if I need to?

Is the method I used of finding the process ID associated with pushpoold a valid way of checking to see if pushpoold is running?

thanks for your help.

What version of pushpool are you trying to run? v0.5 or v0.4.1 Huh

If you are using v0.5 try v0.4.1 ...

To check to see if pushpool is running, simply type ps aux | grep pushpool and you should notice at least two references to pushpool. (One for the search command you just submit, and one for the running pushpoo program).

Also try running pushpool by typing ./pushpool -E

I can't seem to get ./pushpool running by simply running /pushpool but if I add the -E then it seems to work great.

Okay I am running v0.5. I tried running the command ps aux | grep pushpool and this was the result:

Code:
bitcoinminer2@ubuntu:~$ ps aux | grep pushpoold
1000      3004  0.0  0.0  13124  1032 pts/3    S+   15:14   0:00 grep --color=auto pushpoold

this is of course after running:

Code:
bitcoinminer2@ubuntu:~/POOLINSTALL/pushpool-0.5$ ./pushpoold -E
bitcoinminer2@ubuntu:~/POOLINSTALL/pushpool-0.5$ [2011-06-26 23:15:47.680372] Listening on host :: port 8342
[2011-06-26 23:15:47.680703] Listening on host :: port 8341
[2011-06-26 23:15:47.680835] Listening on host :: port 8344
[2011-06-26 23:15:47.680934] Listening on host 127.0.0.1 port 8338

You think it could be the version? what version are you running? Have you had similar problems like this?

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 ██████    ▐▓▓▓▓▌,     ▄█▓▓▓▌    ██████─
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           ▐▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▌          
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frizzl
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June 27, 2011, 03:44:11 AM
 #220

I compile and install pushpoold, but after running it exit and doesnot return any information about error or another. Try use -D and -E keys. Logs not creating.
How I can know why pushpoold not work?
In the latest version 0.5 there is a bug in "util.c" that prevents any output on the CLI when running pushpoold.  See here on how to fix it, then recompile - https://github.com/ius/pushpool/commit/85297905ddc150c46664bd9ad77df6f502d64be1 .  It will probably give you an error when you run it now, similar to "JSON parse failed" like mine was doing.
Update:  A couple of hours ago the author jgarzik posted a slightly different fix: https://github.com/jgarzik/pushpool/commit/385e23fa3a149a650dbbeb5bff8d3a84f949e5bf


On page 8 Phorensic pointed out a bug in .5 that was fixed on github.  You might try and download the latest with the fix and recompile and try.  Default port for mysql is 3306.  Which is what the default server.json has it set as.  If you need to change it edit:  the my.cnf file.  You might also want to try webmin on your linux box it has a lot of features especially for those of us less savy on linux.

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