How to change the ServerID in MMR setup: Difference between revisions

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__FORCETOC__
__FORCETOC__
====Problem:====
====Problem:====
In MMR setup both ldaps are not in sync due to ServerID is same for the both servers.
In MMR setup both ldap are not in sync due to the same ServerID for the both LDAP servers i.e.(ServerID: 2).  
  [zimbra@ldap2 ~]$ /opt/zimbra/libexec/zmreplchk
  [zimbra@ldap2 ~]$ /opt/zimbra/libexec/zmreplchk
  Master: ldap://master2.domain.com:389 ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31 CSNs:
  Master: ldap://master2.domain.com:389 ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31 CSNs:
Line 11: Line 11:
  Master: ldap://master1.domain.com:389ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31 CSNs:
  Master: ldap://master1.domain.com:389ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31 CSNs:
  20200909225502.112266Z#000000#002#000000
  20200909225502.112266Z#000000#002#000000
  [zimbra@ldap1 ~]$ /opt/zimbra/libexec/zmreplchk
  [zimbra@ldap1 ~]$ /opt/zimbra/libexec/zmreplchk
  Master: ldap://master1.domain.com:389  ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31s behind CSNs:
  Master: ldap://master1.domain.com:389  ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31s behind CSNs:
Line 18: Line 19:


====Solution:====
====Solution:====
Need to manually change the for parameter olcserverid and reimport the config.back file to make the id different.
Need to modify the ServerID: 2 to 1 on LDAP1 server. To achieve this, Need to modify configuration database and update the value of parameter olcServerId to 1 on LDAP1 server.


'''Step 1:'''
'''Step 1:'''
Take the backup of main database and configuration database manually from LDAP1.  
Take the backup configuration database manually from LDAP1 server.
  /opt/zimbra/libexec/zmslapcat /tmp
Stop the ldap service and Export the ldap configuration database.
 
  su - zimbra
ldap stop
  /opt/zimbra/libexec/zmslapcat -c /tmp
  /opt/zimbra/libexec/zmslapcat -c /tmp


'''Step 2:'''
'''Step 2:'''
Make the change in "'''/opt/zimbra/data/ldap/config/cn=config.ldif'''" file, Set different ID (1) for the olcserverid parameter.
Modify the '''/tmp/ldap-config.bak''' to update the value of olcServerID and make it 1.


'''Step 3:'''
'''Step 3:'''
Reimport the configuration database and main database on LDAP1 server.
Verify the changed oclServerID before importing it back.
 
[zimbra@ldap1 ~]$grep -i olcServerID: /tmp/ldap-config.bak
olcServerID: 1
 
'''Step 4:'''
Move the existing config directory and Import the configuration database on LDAP1 server.
  cd /opt/zimbra/data/ldap
  cd /opt/zimbra/data/ldap
mv mdb mdb.old
  mv config config.bak
  mv config config.bak
mkdir -p mdb/db
  mkdir config   
  mkdir config   
  /opt/zimbra/libexec/zmslapadd -c /tmp/ldap-config.bak
  /opt/zimbra/libexec/zmslapadd -c /tmp/ldap-config.bak
/opt/zimbra/libexec/zmslapadd /tmp/ldap.bak
mv accesslog accesslog.old                #On both Master LDAP server
mkdir -p accesslog/db                    #On both Matesr LDAP server


'''Step 4:'''
'''Step 5:'''
Restart the services.
Restart the services.
  zmcontrol restart
  ldap start


'''Step 5:'''
'''Step 6:'''
Now again check both ladps are in sync.
Now again check both ladps are in sync.


Line 54: Line 59:
  20221013134129.954789Z#000000#001#000000
  20221013134129.954789Z#000000#001#000000
  20200909225502.112266Z#000000#002#000000
  20200909225502.112266Z#000000#002#000000
  [zimbra@ldap1 ~]$ /opt/zimbra/libexec/zmreplchk
  [zimbra@ldap1 ~]$ /opt/zimbra/libexec/zmreplchk
  Master: ldap://master1.domain.com:389 ServerID: 1 Code: 0 Status: In Sync CSNs:
  Master: ldap://master1.domain.com:389 ServerID: 1 Code: 0 Status: In Sync CSNs:

Latest revision as of 20:54, 12 January 2023

How to change the ServerID in MMR setup?

   KB 24481        Last updated on 2023-01-12  




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(0 votes)

Problem:

In MMR setup both ldap are not in sync due to the same ServerID for the both LDAP servers i.e.(ServerID: 2). 

[zimbra@ldap2 ~]$ /opt/zimbra/libexec/zmreplchk
Master: ldap://master2.domain.com:389 ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31 CSNs:
20221013134129.954789Z#000000#001#000000
Master: ldap://master1.domain.com:389ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31 CSNs:
20200909225502.112266Z#000000#002#000000

[zimbra@ldap1 ~]$ /opt/zimbra/libexec/zmreplchk
Master: ldap://master1.domain.com:389  ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31s behind CSNs:
20221013134129.954789Z#000000#001#000000
Master: ldap://master2.domain.com:389 ServerID: 2 Code: 6 Status: 0y 0M 0w 0d 0h 0m 31s behind CSNs:
20200909225502.112266Z#000000#002#000000

Solution:

Need to modify the ServerID: 2 to 1 on LDAP1 server. To achieve this, Need to modify configuration database and update the value of parameter olcServerId to 1 on LDAP1 server.

Step 1: Take the backup configuration database manually from LDAP1 server. Stop the ldap service and Export the ldap configuration database. 

su - zimbra
ldap stop
/opt/zimbra/libexec/zmslapcat -c /tmp

Step 2: Modify the /tmp/ldap-config.bak to update the value of olcServerID and make it 1.

Step 3: Verify the changed oclServerID before importing it back. 

[zimbra@ldap1 ~]$grep -i olcServerID: /tmp/ldap-config.bak
olcServerID: 1

Step 4: Move the existing config directory and Import the configuration database on LDAP1 server. 

cd /opt/zimbra/data/ldap
mv config config.bak
mkdir config  
/opt/zimbra/libexec/zmslapadd -c /tmp/ldap-config.bak

Step 5: Restart the services. 

ldap start

Step 6: Now again check both ladps are in sync. 

[zimbra@ldap2 ~]$ /opt/zimbra/libexec/zmreplchk
Master: ldap://master1.domain.com:389 ServerID: 1 Code: 0 Status: In Sync CSNs:
20221013134129.954789Z#000000#001#000000
20200909225502.112266Z#000000#002#000000
Master: ldap://master2.domain.com:389 ServerID: 2 Code: 0 Status: In Sync CSNs:
20221013134129.954789Z#000000#001#000000
20200909225502.112266Z#000000#002#000000

[zimbra@ldap1 ~]$ /opt/zimbra/libexec/zmreplchk
Master: ldap://master1.domain.com:389 ServerID: 1 Code: 0 Status: In Sync CSNs:
20221013134129.954789Z#000000#001#000000
20200909225502.112266Z#000000#002#000000
Master: ldap://master2.domain.com:389 ServerID: 2 Code: 0 Status: In Sync CSNs:
20221013134129.954789Z#000000#001#000000
20200909225502.112266Z#000000#002#000000
Submitted by: Aditya Shrivastava
Verified Against: ZCS 8.8 Date Created: 2022-10-16
Article ID: https://wiki.zimbra.com/index.php?title=How_to_change_the_ServerID_in_MMR_setup Date Modified: 2023-01-12



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