Bugfix on alerts generation for yamls (#15420)

23 files changed, 303 insertions, 41 deletions

diff --git a/collectors/cgroups.plugin/multi_metadata.yaml b/collectors/cgroups.plugin/multi_metadata.yaml
index 8a586127eb..b67749e8f2 100644
--- a/collectors/cgroups.plugin/multi_metadata.yaml
+++ b/collectors/cgroups.plugin/multi_metadata.yaml
@@ -616,20 +616,23 @@ modules:
         metric: cgroup.net_packets
         info: average number of packets received by the network interface ${label:device}
           over the last minute
-        os: "linux"
       - name: cgroup_10s_received_packets_storm
         link: https://github.com/netdata/netdata/blob/master/health/health.d/cgroups.conf
         metric: cgroup.net_packets
         info: ratio of average number of received packets for the network interface
           ${label:device} over the last 10 seconds, compared to the rate over the
           last minute
-        os: "linux"
       - name: k8s_cgroup_1m_received_packets_rate
         link: https://github.com/netdata/netdata/blob/master/health/health.d/cgroups.conf
         metric: k8s.cgroup.net_packets
         info: average number of packets received by the network interface ${label:device}
           over the last minute
-        os: "linux"
+      - name: k8s_cgroup_10s_received_packets_storm
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/cgroups.conf
+        metric: k8s.cgroup.net_packets
+        info: ratio of average number of received packets for the network interface
+          ${label:device} over the last 10 seconds, compared to the rate over the
+          last minute
     metrics:
       folding:
         title: Metrics
diff --git a/collectors/charts.d.plugin/apcupsd/metadata.yaml b/collectors/charts.d.plugin/apcupsd/metadata.yaml
index 1661620a21..a0df692518 100644
--- a/collectors/charts.d.plugin/apcupsd/metadata.yaml
+++ b/collectors/charts.d.plugin/apcupsd/metadata.yaml
@@ -63,6 +63,10 @@ alerts:
     metric: apcupsd.load
     info: average UPS load over the last 10 minutes
     os: "*"
+  - name: apcupsd_last_collected_secs
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/apcupsd.conf
+    metric: apcupsd.load
+    info: number of seconds since the last successful data collection
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/charts.d.plugin/nut/metadata.yaml b/collectors/charts.d.plugin/nut/metadata.yaml
index 994c683f18..3991f67063 100644
--- a/collectors/charts.d.plugin/nut/metadata.yaml
+++ b/collectors/charts.d.plugin/nut/metadata.yaml
@@ -63,6 +63,10 @@ alerts:
     metric: nut.load
     info: average UPS load over the last 10 minutes
     os: "*"
+  - name: nut_last_collected_secs
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/nut.conf
+    metric: nut.load
+    info: number of seconds since the last successful data collection
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/ebpf.plugin/multi_metadata.yaml b/collectors/ebpf.plugin/multi_metadata.yaml
index ca4e51df12..cec161aff7 100644
--- a/collectors/ebpf.plugin/multi_metadata.yaml
+++ b/collectors/ebpf.plugin/multi_metadata.yaml
@@ -705,7 +705,14 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: sync_freq
+        link: |
+          https://github.com/netdata/netdata/blob/master/health/health.d/synchronization.conf
+        metric: mem.sync
+        info: number of sync() system calls. Every call causes all pending modifications
+          to filesystem metadata and cached file data to be written to the underlying
+          filesystems.
     metrics:
       folding:
         title: Metrics
diff --git a/collectors/freebsd.plugin/multi_metadata.yaml b/collectors/freebsd.plugin/multi_metadata.yaml
index a761d18b64..bd9ad964b2 100644
--- a/collectors/freebsd.plugin/multi_metadata.yaml
+++ b/collectors/freebsd.plugin/multi_metadata.yaml
@@ -70,6 +70,11 @@ modules:
         metric: system.load
         info: system five-minute load average
         os: "linux"
+      - name: load_average_1
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/load.conf
+        metric: system.load
+        info: system one-minute load average
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -143,7 +148,11 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: active_processes
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/processes.conf
+        metric: system.active_processes
+        info: system process IDs (PID) space utilization
     metrics:
       folding:
         title: Metrics
@@ -245,6 +254,11 @@ modules:
         metric: system.cpu
         info: average CPU steal time over the last 20 minutes
         os: "linux"
+      - name: 10min_cpu_usage
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/cpu.conf
+        metric: system.cpu
+        info: average CPU utilization over the last 10 minutes (excluding nice)
+        os: "freebsd"
     metrics:
       folding:
         title: Metrics
@@ -778,7 +792,12 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: used_swap
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/swap.conf
+        metric: system.swap
+        info: swap memory utilization
+        os: "linux freebsd"
     metrics:
       folding:
         title: Metrics
@@ -868,6 +887,12 @@ modules:
         info: percentage of estimated amount of RAM available for userspace processes,
           without causing swapping
         os: "linux"
+      - name: ram_available
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/ram.conf
+        metric: mem.available
+        info: percentage of estimated amount of RAM available for userspace processes,
+          without causing swapping
+        os: "freebsd"
     metrics:
       folding:
         title: Metrics
@@ -1111,6 +1136,11 @@ modules:
         metric: system.ipc_semaphores
         info: IPC semaphore utilization
         os: "linux"
+      - name: semaphore_arrays_used
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/ipc.conf
+        metric: system.ipc_semaphore_arrays
+        info: IPC semaphore arrays utilization
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -1437,6 +1467,12 @@ modules:
           or net.core.netdev_budget_usecs with work remaining over the last minute
           (this can be a cause for dropped packets)
         os: "linux"
+      - name: 10min_netisr_backlog_exceeded
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/softnet.conf
+        metric: system.softnet_stat
+        info: average number of drops in the last minute due to exceeded sysctl net.route.netisr_maxqlen
+          (this can be a cause for dropped packets)
+        os: "freebsd"
     metrics:
       folding:
         title: Metrics
@@ -1668,7 +1704,12 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: tcp_connections
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_conn.conf
+        metric: ipv4.tcpsock
+        info: IPv4 TCP connections utilization
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -1758,6 +1799,13 @@ modules:
         metric: ipv4.tcphandshake
         info: average number of received TCP RESETS over the last minute
         os: "linux freebsd"
+      - name: 10s_ipv4_tcp_resets_received
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_resets.conf
+        metric: ipv4.tcphandshake
+        info: average number of received TCP RESETS over the last 10 seconds. This
+          can be an indication that a service this host needs has crashed. Netdata
+          will not send a clear notification for this alarm.
+        os: "linux freebsd"
     metrics:
       folding:
         title: Metrics
@@ -1893,6 +1941,11 @@ modules:
         metric: ipv4.udperrors
         info: average number of UDP receive buffer errors over the last minute
         os: "linux freebsd"
+      - name: 1m_ipv4_udp_send_buffer_errors
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/udp_errors.conf
+        metric: ipv4.udperrors
+        info: average number of UDP send buffer errors over the last minute
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -2553,6 +2606,13 @@ modules:
         info: average number of packets received by the network interface ${label:device}
           over the last minute
         os: "linux freebsd"
+      - name: 10s_received_packets_storm
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/net.conf
+        metric: net.packets
+        info: ratio of average number of received packets for the network interface
+          ${label:device} over the last 10 seconds, compared to the rate over the
+          last minute
+        os: "linux freebsd"
       - name: interface_inbound_errors
         link: https://github.com/netdata/netdata/blob/master/health/health.d/net.conf
         metric: net.errors
@@ -2809,7 +2869,6 @@ modules:
         link: https://github.com/netdata/netdata/blob/master/health/health.d/zfs.conf
         metric: zfs.memory_ops
         info: number of times ZFS had to limit the ARC growth in the last 10 minutes
-        os: "*"
     metrics:
       folding:
         title: Metrics
diff --git a/collectors/freeipmi.plugin/multi_metadata.yaml b/collectors/freeipmi.plugin/multi_metadata.yaml
index 36eb7be237..473c8b2cb4 100644
--- a/collectors/freeipmi.plugin/multi_metadata.yaml
+++ b/collectors/freeipmi.plugin/multi_metadata.yaml
@@ -131,7 +131,6 @@ modules:
         link: https://github.com/netdata/netdata/blob/master/health/health.d/ipmi.conf
         metric: ipmi.sensor_state
         info: IPMI sensor ${label:sensor} (${label:component}) state
-        os: "linux"
     metrics:
       folding:
         title: Metrics
diff --git a/collectors/ioping.plugin/metadata.yaml b/collectors/ioping.plugin/metadata.yaml
index f21543fbe3..11c835d67f 100644
--- a/collectors/ioping.plugin/metadata.yaml
+++ b/collectors/ioping.plugin/metadata.yaml
@@ -52,7 +52,11 @@ setup:
 troubleshooting:
   problems:
     list: []
-alerts: []
+alerts:
+  - name: ioping_disk_latency
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/ioping.conf
+    metric: ioping.latency
+    info: average I/O latency over the last 10 seconds
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/macos.plugin/multi_metadata.yaml b/collectors/macos.plugin/multi_metadata.yaml
index 0608c41ad8..a853777e2f 100644
--- a/collectors/macos.plugin/multi_metadata.yaml
+++ b/collectors/macos.plugin/multi_metadata.yaml
@@ -71,6 +71,11 @@ modules:
         metric: system.cpu
         info: average CPU steal time over the last 20 minutes
         os: "linux"
+      - name: 10min_cpu_usage
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/cpu.conf
+        metric: system.cpu
+        info: average CPU utilization over the last 10 minutes (excluding nice)
+        os: "freebsd"
       - name: ram_in_use
         link: https://github.com/netdata/netdata/blob/master/health/health.d/ram.conf
         metric: system.ram
@@ -210,6 +215,16 @@ modules:
         metric: system.load
         info: system five-minute load average
         os: "linux"
+      - name: load_average_1
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/load.conf
+        metric: system.load
+        info: system one-minute load average
+        os: "linux"
+      - name: used_swap
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/swap.conf
+        metric: system.swap
+        info: swap memory utilization
+        os: "linux freebsd"
       - name: 1m_ipv4_tcp_resets_sent
         link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_resets.conf
         metric: ipv4.tcphandshake
@@ -227,11 +242,23 @@ modules:
         metric: ipv4.tcphandshake
         info: average number of received TCP RESETS over the last minute
         os: "linux freebsd"
+      - name: 10s_ipv4_tcp_resets_received
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_resets.conf
+        metric: ipv4.tcphandshake
+        info: average number of received TCP RESETS over the last 10 seconds. This
+          can be an indication that a service this host needs has crashed. Netdata
+          will not send a clear notification for this alarm.
+        os: "linux freebsd"
       - name: 1m_ipv4_udp_receive_buffer_errors
         link: https://github.com/netdata/netdata/blob/master/health/health.d/udp_errors.conf
         metric: ipv4.udperrors
         info: average number of UDP receive buffer errors over the last minute
         os: "linux freebsd"
+      - name: 1m_ipv4_udp_send_buffer_errors
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/udp_errors.conf
+        metric: ipv4.udperrors
+        info: average number of UDP send buffer errors over the last minute
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -629,6 +656,13 @@ modules:
         info: average number of packets received by the network interface ${label:device}
           over the last minute
         os: "linux freebsd"
+      - name: 10s_received_packets_storm
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/net.conf
+        metric: net.packets
+        info: ratio of average number of received packets for the network interface
+          ${label:device} over the last 10 seconds, compared to the rate over the
+          last minute
+        os: "linux freebsd"
       - name: interface_inbound_errors
         link: https://github.com/netdata/netdata/blob/master/health/health.d/net.conf
         metric: net.errors
diff --git a/collectors/proc.plugin/multi_metadata.yaml b/collectors/proc.plugin/multi_metadata.yaml
index 61437dee47..3ca89969cf 100644
--- a/collectors/proc.plugin/multi_metadata.yaml
+++ b/collectors/proc.plugin/multi_metadata.yaml
@@ -71,6 +71,11 @@ modules:
         metric: system.cpu
         info: average CPU steal time over the last 20 minutes
         os: "linux"
+      - name: 10min_cpu_usage
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/cpu.conf
+        metric: system.cpu
+        info: average CPU utilization over the last 10 minutes (excluding nice)
+        os: "freebsd"
     metrics:
       folding:
         title: Metrics
@@ -221,7 +226,12 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: lowest_entropy
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/entropy.conf
+        metric: system.entropy
+        info: minimum number of entries in the random numbers pool in the last 5 minutes
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -659,6 +669,15 @@ modules:
         metric: system.load
         info: system five-minute load average
         os: "linux"
+      - name: load_average_1
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/load.conf
+        metric: system.load
+        info: system one-minute load average
+        os: "linux"
+      - name: active_processes
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/processes.conf
+        metric: system.active_processes
+        info: system process IDs (PID) space utilization
     metrics:
       folding:
         title: Metrics
@@ -986,6 +1005,12 @@ modules:
           or net.core.netdev_budget_usecs with work remaining over the last minute
           (this can be a cause for dropped packets)
         os: "linux"
+      - name: 10min_netisr_backlog_exceeded
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/softnet.conf
+        metric: system.softnet_stat
+        info: average number of drops in the last minute due to exceeded sysctl net.route.netisr_maxqlen
+          (this can be a cause for dropped packets)
+        os: "freebsd"
     metrics:
       folding:
         title: Metrics
@@ -1092,6 +1117,22 @@ modules:
         info: percentage of estimated amount of RAM available for userspace processes,
           without causing swapping
         os: "linux"
+      - name: ram_available
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/ram.conf
+        metric: mem.available
+        info: percentage of estimated amount of RAM available for userspace processes,
+          without causing swapping
+        os: "freebsd"
+      - name: used_swap
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/swap.conf
+        metric: system.swap
+        info: swap memory utilization
+        os: "linux freebsd"
+      - name: 1hour_memory_hw_corrupted
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/memory.conf
+        metric: mem.hwcorrupt
+        info: amount of memory corrupted due to a hardware failure
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -1677,6 +1718,11 @@ modules:
         metric: system.ipc_semaphores
         info: IPC semaphore utilization
         os: "linux"
+      - name: semaphore_arrays_used
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/ipc.conf
+        metric: system.ipc_semaphore_arrays
+        info: IPC semaphore arrays utilization
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -1779,19 +1825,28 @@ modules:
       problems:
         list: []
     alerts:
+      - name: 10min_disk_backlog
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/disks.conf
+        metric: disk.backlog
+        info: average backlog size of the ${label:device} disk over the last 10 minutes
+        os: "linux"
       - name: 10min_disk_utilization
         link: https://github.com/netdata/netdata/blob/master/health/health.d/disks.conf
         metric: disk.util
         info: average percentage of time ${label:device} disk was busy over the last
           10 minutes
         os: "linux freebsd"
+      - name: bcache_cache_dirty
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/bcache.conf
+        metric: disk.bcache_cache_alloc
+        info: percentage of cache space used for dirty data and metadata (this usually
+          means your SSD cache is too small)
       - name: bcache_cache_errors
         link: https://github.com/netdata/netdata/blob/master/health/health.d/bcache.conf
         metric: disk.bcache_cache_read_races
         info: number of times data was read from the cache, the bucket was reused
           and invalidated in the last 10 minutes (when this occurs the data is reread
           from the backing device)
-        os: "freebsd"
     metrics:
       folding:
         title: Metrics
@@ -2051,19 +2106,20 @@ modules:
         link: https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf
         metric: md.disks
         info: number of seconds since the last successful data collection
-        os: "*"
       - name: mdstat_disks
         link: https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf
         metric: md.disks
         info: number of devices in the down state for the ${label:device} ${label:raid_level}
           array. Any number > 0 indicates that the array is degraded.
-        os: "*"
       - name: mdstat_mismatch_cnt
         link: https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf
         metric: md.mismatch_cnt
         info: number of unsynchronized blocks for the ${label:device} ${label:raid_level}
           array
-        os: "*"
+      - name: mdstat_nonredundant_last_collected
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/mdstat.conf
+        metric: md.nonredundant
+        info: number of seconds since the last successful data collection
     metrics:
       folding:
         title: Metrics
@@ -2231,6 +2287,13 @@ modules:
         info: average number of packets received by the network interface ${label:device}
           over the last minute
         os: "linux freebsd"
+      - name: 10s_received_packets_storm
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/net.conf
+        metric: net.packets
+        info: ratio of average number of received packets for the network interface
+          ${label:device} over the last 10 seconds, compared to the rate over the
+          last minute
+        os: "linux freebsd"
       - name: interface_inbound_errors
         link: https://github.com/netdata/netdata/blob/master/health/health.d/net.conf
         metric: net.errors
@@ -2708,6 +2771,11 @@ modules:
         info: average number of dropped packets in the TCP accept queue over the last
           minute
         os: "linux"
+      - name: tcp_connections
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_conn.conf
+        metric: ipv4.tcpsock
+        info: IPv4 TCP connections utilization
+        os: "linux"
       - name: 1m_ipv4_tcp_resets_sent
         link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_resets.conf
         metric: ipv4.tcphandshake
@@ -2725,11 +2793,23 @@ modules:
         metric: ipv4.tcphandshake
         info: average number of received TCP RESETS over the last minute
         os: "linux freebsd"
+      - name: 10s_ipv4_tcp_resets_received
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_resets.conf
+        metric: ipv4.tcphandshake
+        info: average number of received TCP RESETS over the last 10 seconds. This
+          can be an indication that a service this host needs has crashed. Netdata
+          will not send a clear notification for this alarm.
+        os: "linux freebsd"
       - name: 1m_ipv4_udp_receive_buffer_errors
         link: https://github.com/netdata/netdata/blob/master/health/health.d/udp_errors.conf
         metric: ipv4.udperrors
         info: average number of UDP receive buffer errors over the last minute
         os: "linux freebsd"
+      - name: 1m_ipv4_udp_send_buffer_errors
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/udp_errors.conf
+        metric: ipv4.udperrors
+        info: average number of UDP send buffer errors over the last minute
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -3264,7 +3344,17 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: tcp_orphans
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_orphans.conf
+        metric: ipv4.sockstat_tcp_sockets
+        info: orphan IPv4 TCP sockets utilization
+        os: "linux"
+      - name: tcp_memory
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/tcp_mem.conf
+        metric: ipv4.sockstat_tcp_mem
+        info: TCP memory utilization
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -3902,7 +3992,12 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: netfilter_conntrack_full
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/netfilter.conf
+        metric: netfilter.conntrack_sockets
+        info: netfilter connection tracker table size utilization
+        os: "linux"
     metrics:
       folding:
         title: Metrics
@@ -4106,7 +4201,10 @@ modules:
         link: https://github.com/netdata/netdata/blob/master/health/health.d/zfs.conf
         metric: zfspool.state
         info: ZFS pool ${label:pool} state is degraded
-        os: "*"
+      - name: zfs_pool_state_crit
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/zfs.conf
+        metric: zfspool.state
+        info: ZFS pool ${label:pool} state is faulted or unavail
     metrics:
       folding:
         title: Metrics
@@ -4191,7 +4289,6 @@ modules:
         link: https://github.com/netdata/netdata/blob/master/health/health.d/zfs.conf
         metric: zfs.memory_ops
         info: number of times ZFS had to limit the ARC growth in the last 10 minutes
-        os: "*"
     metrics:
       folding:
         title: Metrics
@@ -4490,6 +4587,11 @@ modules:
         metric: btrfs.device_errors
         info: number of encountered BTRFS corruption errors
         os: "*"
+      - name: btrfs_device_generation_errors
+        link: https://github.com/netdata/netdata/blob/master/health/health.d/btrfs.conf
+        metric: btrfs.device_errors
+        info: number of encountered BTRFS generation errors
+        os: "*"
     metrics:
       folding:
         title: Metrics
@@ -4632,7 +4734,12 @@ modules:
     troubleshooting:
       problems:
         list: []
-    alerts: []
+    alerts:
+      - name: linux_power_supply_capacity
+        link: |
+          https://github.com/netdata/netdata/blob/master/health/health.d/linux_power_supply.conf
+        metric: powersupply.capacity
+        info: percentage of remaining power supply capacity
     metrics:
       folding:
         title: Metrics
diff --git a/collectors/python.d.plugin/adaptec_raid/metadata.yaml b/collectors/python.d.plugin/adaptec_raid/metadata.yaml
index 22dcc1e007..9e2a7de7c7 100644
--- a/collectors/python.d.plugin/adaptec_raid/metadata.yaml
+++ b/collectors/python.d.plugin/adaptec_raid/metadata.yaml
@@ -57,7 +57,10 @@ alerts:
     link: https://github.com/netdata/netdata/blob/master/health/health.d/adaptec_raid.conf
     metric: adaptec_raid.ld_status
     info: logical device status is failed or degraded
-    os: "linux"
+  - name: adaptec_raid_pd_state
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/adaptec_raid.conf
+    metric: adaptec_raid.pd_state
+    info: physical device state is not online
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/python.d.plugin/anomalies/metadata.yaml b/collectors/python.d.plugin/anomalies/metadata.yaml
index 6d643ceb49..415159d966 100644
--- a/collectors/python.d.plugin/anomalies/metadata.yaml
+++ b/collectors/python.d.plugin/anomalies/metadata.yaml
@@ -57,7 +57,10 @@ alerts:
     link: https://github.com/netdata/netdata/blob/master/health/health.d/anomalies.conf
     metric: anomalies.probability
     info: average anomaly probability over the last 2 minutes
-    os: "linux"
+  - name: anomalies_anomaly_flags
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/anomalies.conf
+    metric: anomalies.anomaly
+    info: number of anomalies in the last 2 minutes
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/python.d.plugin/beanstalk/metadata.yaml b/collectors/python.d.plugin/beanstalk/metadata.yaml
index 1d04a1649e..d5b927fac6 100644
--- a/collectors/python.d.plugin/beanstalk/metadata.yaml
+++ b/collectors/python.d.plugin/beanstalk/metadata.yaml
@@ -59,7 +59,6 @@ alerts:
     info: number of buried jobs across all tubes. You need to manually kick them so
       they can be processed. Presence of buried jobs in a tube does not affect new
       jobs.
-    os: "freebsd"
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/python.d.plugin/bind_rndc/metadata.yaml b/collectors/python.d.plugin/bind_rndc/metadata.yaml
index 2677e13068..dfc8964a8b 100644
--- a/collectors/python.d.plugin/bind_rndc/metadata.yaml
+++ b/collectors/python.d.plugin/bind_rndc/metadata.yaml
@@ -52,7 +52,11 @@ setup:
 troubleshooting:
   problems:
     list: []
-alerts: []
+alerts:
+  - name: bind_rndc_stats_file_size
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/bind_rndc.conf
+    metric: bind_rndc.stats_size
+    info: BIND statistics-file size
 metrics:
   folding:
     title: Metrics
diff --git a/collectors/python.d.plugin/boinc/metadata.yaml b/collectors/python.d.plugin/boinc/metadata.yaml
index 1a7487f47c..da59dfd0fd 100644
--- a/collectors/python.d.plugin/boinc/metadata.yaml
+++ b/collectors/python.d.plugin/boinc/metadata.yaml
@@ -58,6 +58,11 @@ alerts:
     metric: boinc.tasks
     info: average number of total tasks over the last 10 minutes
     os: "*"
+  - name: boinc_active_tasks
+    link: https://github.com/netdata/netdata/blob/master/health/health.d/boinc.conf
+    metric: boinc.tasks
+    info: average number of active tasks over the last 10 minutes
+    os: "*"
   - name: boinc_compute_errors
     link: https://github.com/netdata/netdata/blob/master/health/health.d/boinc.conf