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    need help with Zabbix server

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    centos zabbix monitoring
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    • Mike DavisM
      Mike Davis @DustinB3403
      last edited by

      to delete the last account, it didn't like that I specified the host, even though it was listed. I did:
      delete from mysql.user where user='zabbix' ;

      and that took.

      now I just have the user zabbix@localhost

      I restarted services and in the log I'm getting:
      1141:20161020:154817.079 [Z3001] connection to database 'zabbix' failed: [2002] Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
      1141:20161020:154817.086 database is down: reconnecting in 10 seconds
      1141:20161020:154827.330 [Z3001] connection to database 'zabbix' failed: [1045] Access denied for user 'zabbix'@'localhost' (using password: YES)

      travisdh1T scottalanmillerS 3 Replies Last reply Reply Quote 0
      • travisdh1T
        travisdh1 @Mike Davis
        last edited by

        @Mike-Davis Can you login to MariaDB with the username/password you're using for Zabbix?

        mysql -u zabbix -p
        
        1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller @Mike Davis
          last edited by

          @Mike-Davis said in need help with Zabbix server:

          to delete the last account, it didn't like that I specified the host, even though it was listed. I did:
          delete from mysql.user where user='zabbix' ;

          and that took.

          now I just have the user zabbix@localhost

          I restarted services and in the log I'm getting:
          1141:20161020:154817.079 [Z3001] connection to database 'zabbix' failed: [2002] Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
          1141:20161020:154817.086 database is down: reconnecting in 10 seconds
          1141:20161020:154827.330 [Z3001] connection to database 'zabbix' failed: [1045] Access denied for user 'zabbix'@'localhost' (using password: YES)

          And that's the only user that there should be.

          1 Reply Last reply Reply Quote 0
          • Mike DavisM
            Mike Davis
            last edited by scottalanmiller

            I can't log in with the user zabbix. Only as root.

            Just for kicks I looked at the zabbix_agentd.log
            I'm getting this error:

              1132:20161020:154817.055 agent #3 started [listener #2]
              1134:20161020:154817.056 active check configuration update from 127.0.0.1:10051 started to fail (cannot connect to 127.0.0.1:10051: 111 Connection refused)
            

            Is it possible I need to open 127.0.0.1 in the firewall?
            I do have this command:

            sudo firewall-cmd --permanent --zone=public --add-port=10051/tcp

            travisdh1T scottalanmillerS 3 Replies Last reply Reply Quote 0
            • travisdh1T
              travisdh1 @Mike Davis
              last edited by

              @Mike-Davis If you can't login to the database using the credentials you created for the Zabbix user, then that will be one problem.

              Firewall ports may or may not be another.

              1 Reply Last reply Reply Quote 0
              • scottalanmillerS
                scottalanmiller @Mike Davis
                last edited by

                @Mike-Davis said in need help with Zabbix server:

                I can't log in with the user zabbix. Only as root.

                Just for kicks I looked at the zabbix_agentd.log
                I'm getting this error:

                  1132:20161020:154817.055 agent #3 started [listener #2]
                  1134:20161020:154817.056 active check configuration update from [127.0.0.1:10051] started to fail (cannot connect to 127.0.0.1]:10051]: [111] Connection refused)
                

                Is it possible I need to open 127.0.0.1 in the firewall?
                I do have this command:

                sudo firewall-cmd --permanent --zone=public --add-port=10051/tcp

                No, there is no network or firewall involved here.

                1 Reply Last reply Reply Quote 0
                • scottalanmillerS
                  scottalanmiller @Mike Davis
                  last edited by

                  @Mike-Davis said in need help with Zabbix server:

                  sudo firewall-cmd --permanent --zone=public --add-port=10051/tcp

                  That's not even the right port. Why are you looking at 10051 when 3306 is the MySQL port?

                  Mike DavisM 1 Reply Last reply Reply Quote 0
                  • scottalanmillerS
                    scottalanmiller
                    last edited by

                    The issue is simple, you have a username / password mismatch. There is nothing more to it.

                    You know that the firewall can't be involved for three reasons...

                    • Root user works, so you've gotten past that point.
                    • The MySQL client does not use the network stack to connect in this way.
                    • Localhost / 127.0.0.1 never goes through the firewall.
                    1 Reply Last reply Reply Quote 1
                    • Mike DavisM
                      Mike Davis @scottalanmiller
                      last edited by

                      @scottalanmiller because the agent was getting connection refused and it's on 10051

                      scottalanmillerS 1 Reply Last reply Reply Quote 0
                      • Mike DavisM
                        Mike Davis
                        last edited by

                        OK, so it's definitely something about the zabbix user account. Switching the zabbix server to connect as root works. How bad is it to let it connect as root?

                        coliverC scottalanmillerS 2 Replies Last reply Reply Quote 0
                        • coliverC
                          coliver @Mike Davis
                          last edited by

                          @Mike-Davis said in need help with Zabbix server:

                          OK, so it's definitely something about the zabbix user account. Switching the zabbix server to connect as root works. How bad is it to let it connect as root?

                          Anything else running on that database? It isn't best practice but if you have a good backup then you probably won't have any issues.

                          1 Reply Last reply Reply Quote 1
                          • Mike DavisM
                            Mike Davis
                            last edited by

                            It's a dedicated server just for zabbix.

                            JaredBuschJ coliverC 2 Replies Last reply Reply Quote 0
                            • JaredBuschJ
                              JaredBusch @Mike Davis
                              last edited by

                              @Mike-Davis said in need help with Zabbix server:

                              It's a dedicated server just for zabbix.

                              Did you follow my guide?

                              Mike DavisM 1 Reply Last reply Reply Quote 0
                              • coliverC
                                coliver @Mike Davis
                                last edited by

                                @Mike-Davis said in need help with Zabbix server:

                                It's a dedicated server just for zabbix.

                                Won't be best practice or altogether safe but you can do it. I'm wondering why the Zabbix user doesn't work though that just seems odd.

                                DustinB3403D 1 Reply Last reply Reply Quote 0
                                • DustinB3403D
                                  DustinB3403 @coliver
                                  last edited by

                                  @coliver said in need help with Zabbix server:

                                  @Mike-Davis said in need help with Zabbix server:

                                  It's a dedicated server just for zabbix.

                                  Won't be best practice or altogether safe but you can do it. I'm wondering why the Zabbix user doesn't work though that just seems odd.

                                  Likely because the zabbix user password was fat fingered and is now stuck in a config file somewhere / isn't being overwritten.

                                  Mike DavisM 1 Reply Last reply Reply Quote 1
                                  • Mike DavisM
                                    Mike Davis @JaredBusch
                                    last edited by

                                    @JaredBusch said in need help with Zabbix server:

                                    @Mike-Davis said in need help with Zabbix server:

                                    It's a dedicated server just for zabbix.

                                    Did you follow my guide?

                                    no, but I wish I had known it was there last night....

                                    1 Reply Last reply Reply Quote 0
                                    • Mike DavisM
                                      Mike Davis @DustinB3403
                                      last edited by

                                      @DustinB3403 said in need help with Zabbix server:

                                      @coliver said in need help with Zabbix server:

                                      @Mike-Davis said in need help with Zabbix server:

                                      It's a dedicated server just for zabbix.

                                      Won't be best practice or altogether safe but you can do it. I'm wondering why the Zabbix user doesn't work though that just seems odd.

                                      Likely because the zabbix user password was fat fingered and is now stuck in a config file somewhere / isn't being overwritten.

                                      I created a really long password, so I was pasting it each time. I even used
                                      use mysql;
                                      update user set password=password('aweakpassword​') where user='zabbix';

                                      to change the password in SQL and then try to connect with that with no luck.

                                      1 Reply Last reply Reply Quote 0
                                      • scottalanmillerS
                                        scottalanmiller @Mike Davis
                                        last edited by

                                        @Mike-Davis said in need help with Zabbix server:

                                        @scottalanmiller because the agent was getting connection refused and it's on 10051

                                        I thought that you were working on the database. The agent doesn't talk to the database.

                                        1 Reply Last reply Reply Quote 0
                                        • scottalanmillerS
                                          scottalanmiller @Mike Davis
                                          last edited by

                                          @Mike-Davis said in need help with Zabbix server:

                                          now I just have the user zabbix@localhost

                                          I restarted services and in the log I'm getting:
                                          1141:20161020:154817.079 [Z3001] connection to database 'zabbix' failed: [2002] Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
                                          1141:20161020:154817.086 database is down: reconnecting in 10 seconds
                                          1141:20161020:154827.330 [Z3001] connection to database 'zabbix' failed: [1045] Access denied for user 'zabbix'@'localhost' (using password: YES)

                                          This is the error that we were addressing, this is between Zabbix and the Database. If you don't have the application talking to the database yet, you should not be toying with the agent. You don't have a working system for the agent to contact yet. You are confusing yourself by jumping around.

                                          1 Reply Last reply Reply Quote 0
                                          • scottalanmillerS
                                            scottalanmiller @Mike Davis
                                            last edited by

                                            @Mike-Davis said in need help with Zabbix server:

                                            OK, so it's definitely something about the zabbix user account. Switching the zabbix server to connect as root works. How bad is it to let it connect as root?

                                            Very. Delete the Zabbix account and make a new one. And don't use the same name, make a fresh account.

                                            1 Reply Last reply Reply Quote 0
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