meta_data JSON file
The setup copy node configuration settings must be stored in a JSON configuration file named meta_data.json. This file will be used by Db2® Mirror to automatically configure the setup copy node during the first IPL after the storage clone.
The following table lists the information saved in meta_data.json.
| JSON tag | Description |
|---|---|
| General configuration | |
| hostname | Host and domain name for setup copy node |
| name | System name of setup copy node |
| chained_ntp | Configure chained time server: true or false |
| external_ts | A list of time servers |
| ntpListenInterface | IP address for NTP client |
| Network configuration information for each setup copy IP address | |
| dns_search | Domain search list |
| dns_nameservers | Up to three Domain Name Server (DNS) IP addresses |
| ipv6 or ipv4 | IPv4 or IPv6 interface |
| broadcast | Subnet-directed broadcast address |
| netmask | Subnet mask (for IPv4 only) |
| cmnlocation | Ethernet port location |
| lind | Line description |
| address | Internet address |
| gateway | Internet address of an internet protocol (IP) router or gateway |
| prefixLen | Prefix length (for IPv6 only) |
| vlanID | Virtual LAN identifier (for IPv6 only) |
| Network Redundancy Group (NRG) configuration information for each Db2 Mirror NRG | |
| groupName | NRG name: MIRROR_DATABASE, MIRROR_IFS, MIRROR_RESYNC, MIRROR_OTHER, MIRROR_ENGINE |
| groupDescription | NRG description |
| loadBalLinkCount | Load balance link count |
| localAddr | IP address on the setup copy node |
| remoteAddr | IP address on the setup source node |
| pairPriority | Priority of the link |
 pairType |
RDMA protocol type
|
| localLind | Line description for the IP address on the setup copy node (required for IPv6 link-local addresses only) |
| localVLANID | Virtual LAN identifier for the IP address on the setup copy node (required for IPv6 link-local addresses only) |
| Routing Information for each routed RDMA link | |
| destination | IP address on the setup source node |
| gateway | Internet address of an IP router or gateway |
| submask | Subnet mask (for IPv4 only) |
| prefixLength | Prefix length (for IPv6 only) |
| bindingInterface | IP address on the setup copy node |
| bindingLined | Line description of the IP address on the setup copy node |
If you choose to populate the meta_data.json file manually from the meta_data.json configuration file example below, then use the Qshell command db2mtool to save the meta_data.json file to the setup source node.
db2mtool action=saveFor more information, see action=save
Example meta_data.json file
The following is an example of a meta_data.json file.
{
"mrdb": true,
"hostname": "MYSYSTEM.MY.COMPANY.COM",
"name": "MYSYSTEM",
"network_config": {
"content_path": "/latest/meta_data.json",
"name": "network_config",
"details": [
{
"device": "eth0",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "10.5.57.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C2-T1",
"lind": "ETHLINE",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"10.5.57.154"
],
"gateway": "10.5.57.1"
},
{
"device": "eth1",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.10.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C4-T1",
"lind": "RDMA10",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.10.22"
]
},
{
"device": "eth2",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.20.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C6-T1",
"lind": "RDMA20",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.20.22"
]
},
{
"device": "eth3",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.30.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C7-T1",
"lind": "RDMA30",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.30.22"
]
},
{
"device": "eth4",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.40.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C8-T1",
"lind": "RDMA40",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.40.22"
]
},
{
"device": "eth5",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.50.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C9-T1",
"lind": "RDMA50",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.50.22"
]
},
{
"device": "eth6",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.60.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C10-T1",
"lind": "RDMA60",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.60.22"
]
},
{
"device": "eth7",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.70.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C11-T1",
"lind": "RDMA70",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.70.22"
]
},
{
"device": "eth8",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": false,
"dns_nameservers": [
"10.5.175.8"
],
"broadcast": "192.168.80.255",
"netmask": "255.255.255.0",
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V22-C12-T1",
"lind": "RDMA80",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": true,
"address": [
"192.168.80.22"
]
},
{
"device": "eth9",
"hwaddress": "ff: ff: ff: ff: ff: ff",
"dns_search": [
"MY.COMPANY.COM"
],
"auto": true,
"ipv6": true,
"dns_nameservers": [
"10.5.175.8"
],
"bootproto": "static",
"cmnlocation": "U9119.MHE.109CD87-V48-C8-T1",
"lind": "ETHLINE2",
"ipcategory": "eth",
"ipgroup": 1,
"ipv4": false,
"address": [
"2002:905:150e:501:9:5:90:192"
],
"prefixLen": "64",
"vlanID": "*NONE"
}
]
},
"nrgs": [
{
"groupName": "MIRROR_DATABASE",
"groupType": 1,
"groupDesc": "Database Replication",
"loadBalLinkCount": 8,
"nrgIPAddrPairs": [
{
"localAddr": "192.168.10.22",
"localLind": "RDMA10",
"localVLANID": 0,
"remoteAddr": "192.168.10.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.20.22",
"localLind": "RDMA20",
"localVLANID": 0,
"remoteAddr": "192.168.20.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.30.22",
"localLind": "RDMA30",
"localVLANID": 0,
"remoteAddr": "192.168.30.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.40.22",
"localLind": "RDMA40",
"localVLANID": 0,
"remoteAddr": "192.168.40.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.50.22",
"localLind": "RDMA50",
"localVLANID": 0,
"remoteAddr": "192.168.50.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.60.22",
"localLind": "RDMA60",
"localVLANID": 0,
"remoteAddr": "192.168.60.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.70.22",
"localLind": "RDMA70",
"localVLANID": 0,
"remoteAddr": "192.168.70.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.80.22",
"localLind": "RDMA80",
"localVLANID": 0,
"remoteAddr": "192.168.80.23",
"pairPriority": 1,
"pairType": 0
}
],
"pairCount": 8
},
{
"groupName": "MIRROR_OTHER",
"groupType": 1,
"groupDesc": "System Object Replication",
"loadBalLinkCount": 8,
"nrgIPAddrPairs": [
{
"localAddr": "192.168.10.22",
"localLind": "RDMA10",
"localVLANID": 0,
"remoteAddr": "192.168.10.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.20.22",
"localLind": "RDMA20",
"localVLANID": 0,
"remoteAddr": "192.168.20.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.30.22",
"localLind": "RDMA30",
"localVLANID": 0,
"remoteAddr": "192.168.30.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.40.22",
"localLind": "RDMA40",
"localVLANID": 0,
"remoteAddr": "192.168.40.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.50.22",
"localLind": "RDMA50",
"localVLANID": 0,
"remoteAddr": "192.168.50.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.60.22",
"localLind": "RDMA60",
"localVLANID": 0,
"remoteAddr": "192.168.60.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.70.22",
"localLind": "RDMA70",
"localVLANID": 0,
"remoteAddr": "192.168.70.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.80.22",
"localLind": "RDMA80",
"localVLANID": 0,
"remoteAddr": "192.168.80.23",
"pairPriority": 1,
"pairType": 0
}
],
"pairCount": 8
},
{
"groupName": "MIRROR_IFS",
"groupType": 1,
"groupDesc": "IFS Replication",
"loadBalLinkCount": 8,
"nrgIPAddrPairs": [
{
"localAddr": "192.168.10.22",
"localLind": "RDMA10",
"localVLANID": 0,
"remoteAddr": "192.168.10.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.20.22",
"localLind": "RDMA20",
"localVLANID": 0,
"remoteAddr": "192.168.20.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.30.22",
"localLind": "RDMA30",
"localVLANID": 0,
"remoteAddr": "192.168.30.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.40.22",
"localLind": "RDMA40",
"localVLANID": 0,
"remoteAddr": "192.168.40.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.50.22",
"localLind": "RDMA50",
"localVLANID": 0,
"remoteAddr": "192.168.50.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.60.22",
"localLind": "RDMA60",
"localVLANID": 0,
"remoteAddr": "192.168.60.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.70.22",
"localLind": "RDMA70",
"localVLANID": 0,
"remoteAddr": "192.168.70.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.80.22",
"localLind": "RDMA80",
"localVLANID": 0,
"remoteAddr": "192.168.80.23",
"pairPriority": 1,
"pairType": 0
}
],
"pairCount": 8
},
{
"groupName": "MIRROR_RESYNC",
"groupType": 1,
"groupDesc": "Resynchronization",
"loadBalLinkCount": 8,
"nrgIPAddrPairs": [
{
"localAddr": "192.168.10.22",
"localLind": "RDMA10",
"localVLANID": 0,
"remoteAddr": "192.168.10.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.20.22",
"localLind": "RDMA20",
"localVLANID": 0,
"remoteAddr": "192.168.20.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.30.22",
"localLind": "RDMA30",
"localVLANID": 0,
"remoteAddr": "192.168.30.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.40.22",
"localLind": "RDMA40",
"localVLANID": 0,
"remoteAddr": "192.168.40.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.50.22",
"localLind": "RDMA50",
"localVLANID": 0,
"remoteAddr": "192.168.50.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.60.22",
"localLind": "RDMA60",
"localVLANID": 0,
"remoteAddr": "192.168.60.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.70.22",
"localLind": "RDMA70",
"localVLANID": 0,
"remoteAddr": "192.168.70.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.80.22",
"localLind": "RDMA80",
"localVLANID": 0,
"remoteAddr": "192.168.80.23",
"pairPriority": 1,
"pairType": 0
}
],
"pairCount": 8
},
{
"groupName": "MIRROR_ENGINE",
"groupType": 1,
"groupDesc": "Db2 Mirror Environment Manager",
"loadBalLinkCount": 8,
"nrgIPAddrPairs": [
{
"localAddr": "192.168.10.22",
"localLind": "RDMA10",
"localVLANID": 0,
"remoteAddr": "192.168.10.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.20.22",
"localLind": "RDMA20",
"localVLANID": 0,
"remoteAddr": "192.168.20.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.30.22",
"localLind": "RDMA30",
"localVLANID": 0,
"remoteAddr": "192.168.30.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.40.22",
"localLind": "RDMA40",
"localVLANID": 0,
"remoteAddr": "192.168.40.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.50.22",
"localLind": "RDMA50",
"localVLANID": 0,
"remoteAddr": "192.168.50.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.60.22",
"localLind": "RDMA60",
"localVLANID": 0,
"remoteAddr": "192.168.60.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.70.22",
"localLind": "RDMA70",
"localVLANID": 0,
"remoteAddr": "192.168.70.23",
"pairPriority": 1,
"pairType": 0
},
{
"localAddr": "192.168.80.22",
"localLind": "RDMA80",
"localVLANID": 0,
"remoteAddr": "192.168.80.23",
"pairPriority": 1,
"pairType": 0
}
],
"pairCount": 8
}
]
}